LOVATO ELECTRIC ATL10 User manual

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LOVATO ELECTRIC S.P.A.
24020 GORLE (BERGAMO) ITALIA
VIA DON E. MAZZA, 12
TEL. [phone]
FAX (Nazionale): 035 4282200
FAX (International): [phone]
E-mail [e-mail]
Web www.LovatoElectric.com
ATL10
AUTOMATIC TRANSFER SWITCH CONTROLLERGB
WARNING!
– Carefully read the manual before the installation or use.
– This equipment is to be installed by qualified personnel, complying to current standards, to avoid damages or safety hazards.
– Before any maintenance operation on the device, remove all the voltages from measuring and supply inputs and short-circuit the CT input terminals.
– Products illustrated herein are subject to alteration and changes without prior notice.
– Technical data and descriptions in the documentation are accurate, to the best of our knowledge, but no liabilities for errors, omissions or contingencies
arising there from are accepted.
– A circuit breaker must be included in the electrical installation of the building. It must be installed close by the equipment and within easy reach of the
operator. It must be marked as the disconnecting device of the equipment: IEC/EN 61010-1 § 6.11.2.
– Clean the instrument with a soft dry cloth; do not use abrasives, liquid
INDEX Page
DESCRIPTION ........................................................................................................................................................................................................................... 1
APPLICATIONS ......................................................................................................................................................................................................................... 2
INSTALLATION .......................................................................................................................................................................................................................... 2
FRONT PANEL .......................................................................................................................................................................................................................... 2
MEASUREMENT SELECTION .................................................................................................................................................................................................... 2
STATUS LEDS ........................................................................................................................................................................................................................... 3
OPERATING MODE SELECTION ................................................................................................................................................................................................ 3
OFF-RESET MODE .................................................................................................................................................................................................................... 3
MAN MODE .............................................................................................................................................................................................................................. 3
AUT MODE ................................................................................................................................................................................................................................ 3
MAIN LINE FAILURE SIMULATION ........................................................................................................................................................................................... 3
UTILITY-TO-GENERATOR APPLICATION .................................................................................................................................................................................. 3
UTILITY-TO-UTILITY APPLICATION .......................................................................................................................................................................................... 4
EJP FUNCTION ......................................................................................................................................................................................................................... 4
CONTROL OF CHANGEOVER DEVICES ..................................................................................................................................................................................... 4
CONTROL OF MOTORISED CIRCUIT BREAKERS ..................................................................................................................................................................... 4
CONTROL OF MOTORISED C/O SWITCHES ............................................................................................................................................................................. 4
CONTROL OF CONTACTORS ..................................................................................................................................................................................................... 4
VOLTAGE CONTROLS ............................................................................................................................................................................................................... 4
ALARMS ................................................................................................................................................................................................................................... 5
PARAMETERS SET-UP .............................................................................................................................................................................................................. 5
MENU TABLE ............................................................................................................................................................................................................................ 5
MENU P1 – RATINGS ............................................................................................................................................................................................................... 6
MENU P2 – GENERAL DATA ..................................................................................................................................................................................................... 6
MENU P3 – LINE 1 VOLTAGE CONTROL .................................................................................................................................................................................. 7
MENU P4 – LINE 2 VOLTAGE CONTROL .................................................................................................................................................................................. 7
MENU P5 – PROGRAMMABLE INPUTS ................................................................................................................................................................................... 8
MENU P6 – PROGRAMMABLE OUTPUTS ................................................................................................................................................................................ 9
MENU P7 – SERIAL COMMUNICATION .................................................................................................................................................................................... 9
MENU A – ALARMS ............................................................................................................................................................................................................... 10
DIAGNOSTIC MESSAGES ......................................................................................................................................................................................................... 11
KEYPAD LOCK .......................................................................................................................................................................................................................... 11
REMOTE CONTROL .................................................................................................................................................................................................................. 11
COMMANDS MENU .................................................................................................................................................................................................................. 11
REAR TERMINAL CONNECTIONS ............................................................................................................................................................................................. 12
OVERALL DIMENSIONS AND PANEL CUT-OUT ........................................................................................................................................................................ 12
WIRING DIAGRAMS ................................................................................................................................................................................................................. 12
TECHNICAL CHARACTERISTICS .............................................................................................................................................................................................. 15
DESCRIPTION
– Microprocessor-based automatic transfer switch controller
– Two voltage measuring inputs for three-phase + neutral
– 12-24-48 VDC power supply
– 4 -digit 14-segment LED displays
– 15 status and measure LED indicators
– 6-keys membrane keypad
– RS-232 serial interface for set-up, remote control and supervision
– 6 programmable digital inputs
– 6 programmable relay outputs (5NO + 1 C/O).
RU
Available in Russian at www.LovatoElectric.com/I300RU.pdf

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APPLICATIONS
– Utility-to-utility or utility-to-generator changeover
– Control of motorised circuit breakers, motorised switches or contactors
– Three-phase, two-phase or single-phase voltage controls
– Phase-phase voltage and/or phase-neutral voltage control
– Controls of minimum voltage, maximum voltage, phase loss, asymmetry, minimum frequency, maximum frequency, with independent enable and delay
– Voltage thresholds with programmable hysteresis.
INSTALLATION
– Install the unit following the wiring diagrams on the last pages of this manual
– Use the appropriate wiring diagram for the application
– Program parameters as a function of the wiring diagram adopted and pay particular attention to the programming of inputs/outputs.
FRONT PANEL
– The unit front panel is equipped with a LED display which shows the voltages of the two supply lines (Line 1 and Line 2) with the relevant key for measure
selection (A)
–Three keys, OFF/RESET-MAN-AUT (B-C-D), enable to select the operating mode, which is displayed by the corresponding LED
– A mimic diagram is located in the centre of the front panel; it shows the presence of the power supply sources and the status of circuit breakers for load
connection
– Two keys (F and E) allow the manual control of circuit breakers.
MEASURE SELECTION
– Press the key on the right of display (A) repeatedly to display the various measures
– Line-to-line (L-L) voltages, line-to-neutral (L-N) voltages and frequency are available for each line
– The battery supply voltage is shown through the dedicated LED.
– Red LED combinations indicate which measure is selected. The list of measures varies depending on whether the unit is set up for three-phase, two-phase,
or single-phase control
– After 1 minute without touching the key the measure reverts to default measure, which may be the first L-L voltage or the first L-N voltage depending on the
setting of the voltage control
– In case of alarms or messages, the display will show a scrolling text. Pressing the selection key A will mask the alarm temporarily and allow the measures to
be accessed
– When load is switched between line 1 and line 2, the measure selected on the display follows automatically the load.

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STATUS LEDS
– Some LEDs are present on the front panel; they show the status of the unit and/or the circuit breakers it controls
– The following table details the meaning of the different LEDs:
LED COL. ON OFF FLASHING
1 Red Measure selection
2,3 Green Voltage and Voltage or frequency Presence or absence
frequency within limits out of limits delay time running
4,5 Yellow Breaker closed Breaker opened Breaker in operation
6 Red OFF / RESET Mode OFF / RESET Mode,
Remote control active
7 Red MAN Mode MAN Mode,
Remote control active
8 Red AUT Mode AUT Mode,
Remote control active
9 Red Alarm active

If auxiliary signals (feedback) have been suitably connected and programmed, the LEDs represent the circuit breakers status; otherwise they represent the status of control outputs.
OPERATING MODE SELECTION
– The three keys OFF-RESET / MAN / AUT allow to select the required operating mode, which will be shown when the corresponding red LED lights up
– The selected operating mode is kept when power supply is removed and then restored
– If the LED showing the selected operating mode flashes, it indicates that the unit is communicating through the serial interface and that it might perform
commands given from remote, including even the change of the mode itself.
OFF-RESET MODE
– In this mode the unit is disabled, and does not perform any actions
– All visual displays, concerning both measures and status LEDs, remain active
– If the control of changeover devices is the pulse-type, in OFF-RESET both controls remain disabled. On the contrary, if it is in continuous control mode, the
behaviour depends upon P2.19 programming
– To access programming menus it is always necessary to shift to OFF-RESET mode beforehand
– By pressing the OFF-RESET key retentive alarms can be cleared, provided that the conditions generating the alarm have been removed.
MAN MODE
– In MAN mode it is possible to control circuit breakers manually by pressing the relevant key (F and E keys) for a minimum time of 300ms
– At each key pressure the circuit breaker status is switched over. The command is accepted only when 1sec has elapsed from the end of the previous
switching
– If a manual command is given to close a circuit breaker while the other is still closed, the unit will first open the other circuit breaker and then close the one
commanded, while interposing the programmed interlock time
– When operating with a generator set, the generator startup and shutdown can be manually commanded on the secondary line by pressing and holding down
the MAN key for 5 seconds.
AUT MODE
– In automatic mode the unit itself performs both circuit breaker opening and closing operations, the startup and shutdown of the generator set, if any
– When the main line exceeds the limits, after the set delay times (line presence green LED off), the unit disconnects the load from the main line and connects
it to the secondary line, controlling both the startup of the generator set, if any, and the handling and interlock times between circuit breakers
– The unit may be programmed to disconnect the load from the main line before or after the secondary line has been made available
– When the main line returns within the limits, the unit switches over the load again and controls the generator set cooling cycle, if any
– Automatic operating cycles vary both as a function of the type of application (utility-to-utility, utility-to-generator) and as a function of the type of switching
devices used (motorised circuit breakers, switches or contactors).
MAIN LINE FAILURE SIMULATION
– Starting from the AUT mode, it is possible to simulate a 1 min. voltage failure on the main line
– The unit will respond in the same manner and timeframe set for standard automatic operation. The proper operation of transfer cycles may thus be controlled
– Starting from AUT mode, press the AUT key and the line 2 ON-OFF key together for 10 consecutive seconds
– The letters F.SI (Failure Simulation) will be shown on the display during the execution of the whole cycle
– To stop the test before completion, repeat the starting procedure or switch to OFF – RESET mode.
UTILITY-TO-GENERATOR APPLICATION
– In the utility-to-generator application (U-G, default setting) the load is usually connected to the utility (Line 1)
– Following voltage or frequency anomaly, after the delay set in P2.13, a start signal is sent to generator (Line 2)
– When generator voltage is within programmed limits, the load is connected to the generator end until the utility line reverts to standard values
– At this time the load is transferred back and the generator is kept in operation without load for a time set by P2.14 to allow it to cool down
– The ATL10 switch sends a start/stop command to the generator through a relay output and can receive digital signals from the generator indicating its status
(generator ready, ok to load taking, etc) through programmable inputs.

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UTILITY-TO-UTILITY APPLICATION
– In the utility-to-utility (U-U) application, the load is usually connected to the main utility and the transfer to the secondary utility occurs if/when the main line
anomaly or of transfer signal is given from the outside.
EJP FUNCTION
– For applications requiring the EJP function, it is possible to use two programmable inputs set to functions S.GE (start generator) and E.TR (External transfer)
– Parameter P2.20 can also be used to define a generator start delay.
CONTROL OF CHANGEOVER DEVICES
– For the line changeover, ATL10 can control different types of devices such as motorised circuit breakers, motorised changeovers or contactors
– Depending on the type of changeover devices used with the ATL10, appropriate wiring diagrams shall be used with related programming of programmable
inputs / outputs
– Programmable outputs are set by default for the application with motorised circuit breakers. See the attached wiring diagrams at the end of this manual
– The device status feedback inputs shall be normally wired, so as to ensure reliable system operation
– Nonetheless, it is however possible to avoid their wiring and set programmable inputs for other functions. In this case the unit behaves as if the device
carried out at once the command sent
–If the device status inputs are not used, then ATL10, after power-on, sends an open command to bring the switching devices in a determinate position
– If instead the device status inputs are used, then ATL10, after power-on, does not send commands to the switching device until the relative line status is not
stable, that is when the presence / absence delay have elapsed
– Internal control relays are neither interlocked electrically nor mechanically.
CONTROL OF MOTORISED CIRCUIT BREAKERS
– For the control of motorised circuit breakers, 4 outputs are needed (open and close commands for line 1 and line 2) and two inputs for circuit breakers
status feedback, plus any additional optional inputs for overload protection alarm signalling (TRIP)
– Open and close commands can be used in continuous or pulse mode, i.e. kept until the circuit breaker has reached the required position + safety time
– The two command modes can be selected through the appropriate parameter P2.07 in the general data menu
– If a breaker close command fails, before generating a timeout alarm the ATL10 executes a open command (spring reload) and then re-attempts to close the
breaker. If the operation fails again then the timeout alarm is generated.
– TRIP inputs are ignored for a 15 second window every time an open command is sent to circuit breakers. This prevents a false alarm from being activated if
the circuit breakers temporarily sending the TRIP signal during the opening through trip coil are used.
CONTROL OF MOTORISED CHANGEOVER SWITCHES
– The application with motorised switches is very similar to the previous one, but provides for the use of three outputs only (line 1, line 2 and all open
positions) and two inputs for circuit breaker position status
– CL.1, CL.2 and OP.A output functions and FB.1 and FB.2 input functions are required
– It is possible to select the command mode, either pulse or continuous also in this case.
CONTROL OF CONTACTORS
– If a pair of contactors is used, two outputs (CL.1 and CL.2) and two feedback inputs are required
– In this case, the command must be programmed in contactor mode (P2.07 = CNT).
VOLTAGE CONTROLS
– All the conditions which can help establish whether a power source is or is not suitable are defined by the user through menu P1 (ratings) and menus P3 and
P4 (line 1 and line 2 voltage limits, respectively)
– The system ratings can be set through menu P1, including rated voltage and frequency, which will be used as reference to set percent thresholds
– A voltage ratio (VT ) can be set whenever a voltage lower than the actual system voltage is applied to the unit voltage inputs. Also in this case, both the
visualization and the setting of thresholds will be implemented in actual magnitudes referred to the system
– The controller can be programmed to perform voltage controls on three-phase with or without neutral, two-phase or single-phase utilities (P1.03)
– In the case of three-phase or two-phase utility, you can choose whether to monitor L-L voltage, L-N voltage, or both (P1.04) . In every case, the rated voltage
set with P1.01 has to be equal to the phase-to-phase voltage.
– The following table lists the controls made on each line. The ones marked with OFF may be excluded
Control Description OFF
Minimum voltage One or more phases too low
Maximum voltage One or more phases too high
G
Phase loss Threshold below which the unit intervention is quicker than G
with a normal decrease.
Asymmetry (unbalance) Phases within the Maximum-Minimum range but too different from each other
G
Minimum frequency Too low frequency G
Maximum frequency Too high frequency G
Phase sequence Reverse rotation of phases G
– Each anomaly has an independent delay time. The anomaly must last uninterruptedly more than the time specified to invalidate the voltage presence signal
– When all the line parameters are restored within the specified limits, before the line may be used, the line presence delay time must elapse. The duration of
this time is specified by two independent parameters, one defining the delay time when the alternate line is available, and a second one, normally shorter, that
defines the delay in case of the alternate line is not available
– All controls, except minimum voltage, may be excluded independently, by setting the relevant parameters to OFF
– The limits of minimum and maximum voltage are specified by setting two thresholds each, one defining the point beyond which voltage is considered no
longer acceptable (e.g. P3.01, drop-out) and the other, nearer to the rated voltage, defining the point where it is again compatible (e.g. P3.02, pick-up). The
distance between these two thresholds defines hysteresis. For instance, it can be stated that below 80% of the rated value, voltage can no longer be used and
that, to be deemed satisfactory, it must rise again above 85%, thus defining a 5% hysteresis (dead-band). The same principle is applied to maximum voltage
– As concerns frequency thresholds, there is a fixed hysteresis equal to 1% of rated frequency
– For the phase loss, the pick-up threshold is the same as the minimum voltage pick-up threshold.

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ALARMS
– When an alarm situation occurs, ATL10 either shows a code on the displays or lights up a dedicated LED
– For non-retentive alarms, the indication disappears automatically when the alarm conditions stop, while for retentive ones a manual reset is needed from the
unit front panel: this is done by pressing key OFF / RESET (and then shifting to OFF mode)
– The presence of any alarm is signalled by the lighting up of the relevant flashing ALARM Led
– In the presence of an alarm, both the global alarm output (ALA) and the ATS ready output (RDY) are de-energized.
– An alarm can be disabled by programming to OFF the parameter defining its threshold or the programmable input generating it
– The following table lists the possible alarms and their meanings. The MODE column indicates the operating modes (OFF MAN AUT ) where the alarm is
enabled.
A01 - A02 – Battery voltage beyond threshold for a time exceeding the time set.
A03 - A04 – The changeover device did not perform the opening or closing operation within the max. time set. After alarm generation, the opening or closing
command is inhibited.
Alarms are generated only if at least one of the two power sources is present, i.e. if it is higher that the minimum thresholds programmed.
A05 - A06 – The phase sequence detected on line 1 – line 2 does not correspond to the programmed one.
A07 – The load remained de-energized for a time exceeding the one programmed by P2.11, either because supply lines were not available or because both
circuit breakers remained open.
A08 – Can be generated by the opening of the external ‘generator not ready’ input or when, after having started the generator, the voltage does not become
acceptable within the time specified by P2.11. If the alarm is generated by the external input then it is not retentive. Otherwise it is retentive and thus must be
resetted using RESET/OFF key.
In applications with two generators, A08 is shown on the Line 1 or Line 2 display depending on which generator generated the alarm.
A09 – Alarm generated by the opening of the external emergency input. Both circuit breakers are opened.
A10 - A11 – Generated by the closing of programmable input Trip (TR.1 and TR.2 functions). The open and close commands of the circuit breaker concerned are
inhibited.
PARAMETERS SET-UP
– To access parameter setup, starting with the unit in OFF-RESET mode, press the A and D keys together for five consecutive seconds. MENU SETUP text will
appear on the display, wait a few seconds or press key D to access the menu
– The display will show the code of the first parameter P1.01, i.e. menu P1, parameter 01
– Press keys A and B to scroll the parameters of the same menu
– Press keys E and F to browse the different menus
– Press keys C to switch between the code and the value of the parameter
– By moving to another parameter or quitting, the menu the setting will be stored automatically
– Press key D to quit parameters setup
– Press keys E and F simultaneously to go back to the default setting of the parameter
– If no keys are pressed for more than 2 minutes, the unit exits setup automatically without storing the changes.
COD Description MODE
A01 Battery voltage too low O M A
A02 Battery voltage too high O M A
A03 Line 1 circuit breaker timeout A
A04 Line 2 circuit breaker timeout A
A05 Line 1 wrong phase sequence O M A
A06 Line 2 wrong phase sequence O M A
A07 Load not powered timeout A
A08 Generator not available O M A
A09 Emergency O M A
A10 Line 1 circuit breaker protection trip A
A11 Line 2 circuit breaker protection trip A
MENU TABLE
MENU Description
P1 System ratings
P2 General data
P3 Line 1 voltage control
P4 Line 2 voltage control
P5 Programmable inputs
P6 Programmable outputs
P7 Communication port
A Alarms

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PAR Function Range Default
P1.01 System rated voltage 100…690 VAC 400
P1.02 Voltage transformer (VT) ratio 1.00 … 9.99 1.00
P1.03 Wiring configuration 3.nE – Three-phase + neutral 3.nE
3.Ph – Three-phase
2.Ph – Two-phase
1.Ph – Single-phase
P1.04 Type of voltage control L-L – Line-to-Line L-L
L-N – Line-to-Neutral
LLn – Line-to-Line +
Line-to-Neutral
P1.05 Rated frequency 50 HZ 50HZ
60 HZ
P1.06 Rated battery voltage AUTO AUTO
12V
24V
48V
P1.07 Language ENG English ENG
ITA Italiano English
FRA Francais
ESP Espanol
POR Portoguese
DEU Deutsch
MENU P1 – RATINGS
PAR Function Range Default
P2.01 Type of application U-G = Utility to Generator U-G
U-U = Utility to Utility
P2.02 Phase Sequence control OFF – Disabled OFF
123 – Direct
321 – Inverse
P2.03 Main Line Selection -1- Line 1 -1-
-2- Line 2
P2.04 Interlock time Line 1 →Line 2 0.1 … 90.0 s 6.0 s
P2.05 Interlock time Line 1 ←Line 2 0.1 … 90.0 s 6.0 s
P2.06 Changeover Strategy OBP – Open Before Presence OBP
of alternate line
OAP – Open After Presence
of alternate line
P2.07 Circuit Breakers Control Type PUL – Pulse PUL
CON – Continuous
CNT - Contactors
P2.08 Maximum time for Circuit Breaker Operation (A03 – A04 Alarms delay) 1…900s 5 s
P2.09 Open command duration 0.0…60.0 s 10.0 s
P2.10 Close command duration 1.0…60.0 s 1.0 s
P2.11 Load not supplied timeout OFF / 1…3600s 60 s
(A07 Alarm intervention delay)
P2.12 Lock of automatic restore to priority line OFF – Disabled OFF
ON – Lock on
P2.13 Generator start delay 0 …. 900 s 1 s
P2.14 Generator cooling time 1…3600s 120 s
P2.15 Battery minimum voltage threshold OFF / 70…100% 75%
P2.16 Battery maximum voltage threshold OFF / 10…140% 130%
P2.17 Battery alarm thresholds delay 0…60 s 10 s
P2.18 Voltage control enable in MAN mode OFF / ON OFF
P2.19 Continuous control in RESET/OFF mode OFF – Release/open control NOC
command outputs
NOC – No change
on control outputs
P2.20 EJP start delay OFF / 1..3600s OFF
MENU P2 – GENERAL DATA
P1.01 – Rated voltage used for threshold calculation; thresholds are expressed as Un percentage.
P1.03 – Defines the network wiring configuration used. The setting between 3-phase and 3-phase + neutral influences the visualization only.
P1.04 – Specifies if the voltage controls are applied to L-L voltages, to L-N voltages or to both voltages.
P1.05 – Rated frequency used as reference for frequency threshold calculation.
P1.06 – Used for alarms on battery voltage. If set to AUTO the rated voltage of the battery is detected automatically.
P1.07 – Language used for alarms and other status messages.
P2.01 – Defines the type of application for the control with or without generator set, enabling the supervision of the relevant input/output signals.
P2.03 – Defines which is the main line, i.e. the line taking on the load when both sources are available.
P2.06 – OBP (Open Before Presence) means that, in automatic mode, the open command of a circuit breaker is generated when the relative line goes beyond
limits, irrespective of the status of the secondary line.
OAP (Open After Presence) means that, in automatic mode, the open command of a circuit breaker is sent only after the secondary line is present within limits.
P2.07 - Defines whether open-close outputs must be continuously active (application with contactors or circuit breakers without feedback) or in pulse mode,
i.e. activated until the circuit breaker / switch has been positioned as required.
If in pulse mode, the command is extended for a specified time (see P2.09 and P2.10) even after positioning completion.

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P2.08 – If, after sending an open or close command to a circuit breaker, this is not positioned correctly within this time, alarm A03 or A04 is generated. It works
when the auxiliary contacts of circuit breaker status are programmed and wired.
P2.09 – Minimum duration of an opening command pulse.
For the motorised circuit breaker application, it must be set to a time long enough to allow the load of the springs. This time is considered also when working in
continuous mode.
P2.10 – Duration of the closing command pulse.
P2.11 – If in automatic mode both sources are not available at the same time for a time exceeding P2.11, alarm A07 is generated.
P2.12 – If this parameter is enabled, after a transfer to the secondary line, restore to main line does not occur automatically when the latter becomes available
again, but it must be commanded in manual mode.
P2.13 – Time elapsing between line 1 loss and the sending of the transfer signal to the generator on the secondary line. This time is independent of the circuit
breaker opening time.
P2.14 – Time during which the generator is left in operation to cool after it has been disconnected from the load.
P2.18 – Enables or disables voltage control in MAN mode. If the control is enabled, no transfers are performed between the two lines, but the individual
switching device is opened/closed when its voltage goes beyond / returns within limits.
P2.19 – Defines the performance of the open/close command outputs when working in continuous command mode and ATL10 is in RESET/OFF mode. This
parameter can be useful when working with contactors.
P2.20 – Delay between the EJP start signal and the effective start signal sent to the generator.
P3.01 - P3.02 - P3.03 – The first two parameters define the minimum voltage threshold and the related hysteresis upon restore. P3.02 cannot be set to a lower
value than P3.01. P3.03 defines the intervention delay of this protection. See paragraph Voltage Controls.
P3.04 - P3.05 - P3.06 – The first two parameters define the maximum voltage threshold and the related hysteresis upon restore. P3.05 cannot be set to a value
exceeding P3.04. Setting P3.04 to OFF will disable the maximum voltage control. P3.06 defines the maximum voltage intervention delay. See paragraph Voltage
Controls.
P3.07 - P3.08 – Voltage threshold below which a phase loss intervention occurs, generally quicker than the drop. The delay for the phase loss is specified by
P3.08.
P3.09 - P3.10 – P3.09 defines the maximum threshold for unbalance between phases, referred to voltage rating, and P3.10 defines the related intervention
delay. This control may be disabled by setting P3.09 to OFF.
P3.11 - P3.12 – Threshold (it may be disabled) and intervention delay for minimum frequency.
P3.13 - P3.14 – Threshold (it may be disabled) and intervention delay for maximum frequency.
P3.15 – Delay for Line 1 restore to the limit range, used when the line 2 source is not available. Generally shorter than P3.16, as there is the urgent need to
supply power because the load is not energized.
P3.16 – Delay for Line 1 restore to the limit range, used when the load can be connected to line 2. Generally longer than P3.15, as the load is energized and
consequently it is possible to wait longer before considering voltage steadily restored.
PAR Function Range Default
P3.01 Minimum voltage threshold – trip 70…98 % 85%
P3.02 Minimum voltage threshold – restore 75…100 % 90%
P3.03 Minimum voltage threshold - delay 0.1 …. 900 s 1.0 s
P3.04 Maximum voltage threshold - trip 102…120% / OFF 115%
P3.05 Maximum voltage threshold - restore 100…115% 110%
P3.06 Maximum voltage threshold - delay 0.1 …. 900 s 1.0 s
P3.07 Phase loss threshold 60 … 85% / OFF 70%
P3.08 Phase loss threshold delay 0.1 … 30.0 s 0.1 s
P3.09 Voltage unbalance threshold 1 … 20% / OFF 15%
P3.10 Voltage unbalance threshold delay 0.1 … 900 s 5.0 s
P3.11 Minimum frequency threshold OFF / 80…100 % Fe 95%
P3.12 Minimum frequency threshold - delay 0.1 … 900 s 5.0 s
P3.13 Maximum frequency threshold 101 … 120% Fe / OFF 105%
P3.14 Maximum frequency threshold - delay 0.1 … 900 s 3.0 s
P3.15 Line 1 restore within limits - delay (when line 2 source not available) 1 … 3600 s 10 s
P3.16 Line 1 restore within limits - delay (when line 2 source is available) 1 … 3600 s 60 s
MENU P3 – LINE 1 VOLTAGE CONTROL
PAR Function Range Default
P4.01 Minimum voltage threshold – trip 70…98 % 85%
P4.02 Minimum voltage threshold – restore 75…100 % 90%
P4.03 Minimum voltage threshold- delay 0.1 …. 900 s 1.0 s
P4.04 Maximum voltage threshold - trip 102…120% / OFF 115%
P4.05 Maximum voltage threshold - restore 100…115% 110%
P4.06 Maximum voltage threshold delay 0.1 …. 900 s 1.0 s
P4.07 Phase loss threshold 60 … 85% / OFF 70%
P4.08 Phase loss threshold delay 0.1 … 30.0 s 0.1 s
P4.09 Voltage unbalance threshold 1 … 20% / OFF 15%
P4.10 Voltage unbalance threshold delay 0.1 … 900 s 5.0 s
P4.11 Minimum frequency threshold OFF / 80…100 % Fe 95%
P4.12 Minimum frequency threshold - delay 0.1 … 900 s 5.0 s
P4.13 Maximum frequency threshold 101 … 120% Fe / OFF 105%
P4.14 Maximum frequency threshold - delay 0.1 … 900 s 3.0 s
P4.15 Line 2 restore within limits - delay (when line 1 source not available) 1 … 3600 s 10 s
P4.16 Line 2 restore within limits - delay (when line 1 source is available) 1 … 3600 s 60 s
MENU P4 – LINE 2 VOLTAGE CONTROL
Note – For details on the functions of parameters see the previous page concerning Line 1 menu.

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PAR Function Range Default
P5.1.1 Prog. input Function 1 See following list FB.1
terminal 2.1
P5.1.2 Prog. input 1 mode normal/inverted NOR/INV NOR
P5.1.3 Closing delay 0.0-25.0 s 0.0 s
P5.1.4 Opening delay 0.0-25.0 s 0.0 s
P5.2.1 Prog. input Function 2 See following list FB.2
terminal 2.2
P5.2.2 Prog. input 2 mode normal/inverted NOR/INV NOR
P5.2.3 Closing delay 0.0-25.0 s 0.0 s
P5.2.4 Opening delay 0.0-25.0 s 0.0 s
P5.3.1 Prog. input Function 3 See following list TR.1
terminal 2.3
P5.3.2 Prog. input 3 mode normal/inverted NOR/INV NOR
P5.3.3 Closing delay 0.0-25.0 s 0.0 s
P5.3.4 Opening delay 0.0-25.0 s 0.0 s
P5.4.1 Prog. input Function 4 See following list TR.2
terminal 2.4
P5.4.2 Prog. input 4 mode normal/inverted NOR/INV NOR
P5.4.3 Closing delay 0.0-25.0 s 0.0 s
P5.4.4 Opening delay 0.0-25.0 s 0.0 s
P5.5.1 Prog. input Function 5 See following list E.TR
terminal 2.5
P5.5.2 Prog. input 5 mode normal/inverted NOR/INV NOR
P5.5.3 Closing delay 0.0-25.0 s 0.0 s
P5.5.4 Opening delay 0.0-25.0 s 0.0 s
P5.6.1 Prog. input Function 6 See following list IN.R
terminal 2.6
P5.6.2 Prog. input 6 mode normal/inverted NOR/INV NOR
P5.6.3 Closing delay 0.0-25.0 s 0.0 s
P5.6.4 Opening delay 0.0-25.0 s 0.0 s
MENU P5 – PROGRAMMABLE INPUTS
COD Function
OFF Input not used
FB.1 Line 1 circuit breaker closed (Feedback 1)
Auxiliary contact informing the ATL10 of the open/closed status of line 1 circuit breaker. If this signal is not connected, ATL10 considers
the status of the circuit breaker corresponding to the status of control outputs
FB.2 Line 2 circuit breaker closed (Feedback 2)
Like Fb.1, referred to line 2
TR.1 Line 1 circuit breaker protection (Trip 1)
When the contact is closed, it generates an alarm of line 1 circuit breaker protection intervention
TR.2 Line 2 circuit breaker protection (Trip 2)
Like tr.1, referred to line 2
E.TR Transfer to secondary line
When closed, causes changeover to secondary line even if main line voltage is within limits.
It can be used to switch the priority between line 1 and line 2.
The secondary line circuit breaker remains activated until this line remains within limits.
Can be used for EJP function
IN.R Inhibit Return to main line
In AUT mode, when closed, it inhibits the return to main line after it has reverted to the limit range.
It is used to prevent the second power cutout due to re-transfer from occurring automatically at an unforeseeable time
S.GE Start Generator
In AUT mode, when closed, it causes the generator to start after the delay specified by P2.20. It can be used for EJP function
EME Emergency
NC contact which, if open, causes both circuit breakers to open and generates alarm A09
GR.2 Line 2 generator ready (Generator ready 2)
When closed it signals that the generator connected to line 2 is aviable for use. If this signal is missing, allìarm A08 is generated
E.L1 Enable load on line 1 (Enable Load 1)
It allows load connection on line 1, in addition to internal controls
E.L2 Enable load on line 2 (Enable Load 2)
Like EL.1, referred to line 2
LOC Keypad lock (Lock)
If closed, it locks all the functions from front keypad except measure viewing
L.PA Lock Parameters
If closed, it locks the access to setup menus
Functions of programmable Inputs

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PAR Function Range Default
P6.1.1 Function of prog. output 1 See list OP.1
terminal 4.1
P6.1.2 Prog. output 1 mode Nor/Inv Nor
P6.2.1 Function of prog. output 2 See list CL.1
terminal 4.3
P6.2.2 Prog. output 2 mode Nor/Inv Nor
P6.3.1 Function of prog. output 3 See list OP.2
terminal 5.1
P6.3.2 Prog. output 3 mode Nor/Inv Nor
P6.4.1 Function of prog. output 4 See list CL.2
terminal 5.3
P6.4.2 Prog. output 4 mode Nor/Inv Nor
P6.5.1 Function of prog. output 5 See list rdy
terminal 3.1
P6.5.2 Prog. output 5 mode Nor/Inv Nor
P6.6.1 Function of prog. output 6 See list GC.2
terminals 3.3-3.4
P6.6.2 Prog. output 6 mode Nor/Inv Nor
MENU P6 – PROGRAMMABLE OUTPUTS
COD Function
OFF Output not used
OP.1 Line 1 circuit breaker open control (Open 1)
Contact which closes to command the opening of line 1 circuit breaker. It may remain energized or be released when the operation
is completed, depending on P2.07 setting. (not used when contactors or switches are used)
CL.1 Line 1 circuit breaker close control (Close 1)
Contact which closes to command the closing of line 1 circuit breaker. It may remain energized or be released when the operation
is completed, depending on P2.07 setting
OP.2 Line 2 circuit breaker open control (Open 2)
Like OP.1, referred to line 2
CL.2 Line 2 circuit breaker close control (Close 2)
Like CL.1, referred to line 2
OP.A Open control for both lines (Open All)
Used to set motorised switches to neutral position, with both lines open
GC.2 Generator Control 2
Start / stop control for the generator connected to line 2. When closed it commands the shutdown of the generator set.
Used in Utilty-Generator applications
RDY ATL10 Ready
It signals that the unit is in automatic mode and without alarms, ready for intervention
ALA Global Alarm
Energized output under standard conditions, de-energized in the presence of any alarm
L1.S Line 1 Status
The output is energized when there are all the conditions to connect load to line 1
L2.S Line 2 Status
The output is energized when there are all the conditions to connect load to line 2
P6.x.2 – Set the output status when the selected function is not active.
dir = not energized, rev = energized
Functions of Programmable Outputs
PAR Function Range Default
P7.01 RS-232 Address 1 ..245 1
P7.02 RS-232 Baud Rate 2400 9600
4800 baud
9600
19200
38400
P7.03 RS-232 Protocol RTU – Modbus RTU RTU
ASC – Modbus ASCII
P7.04 RS-232 Parity NONE – None NONE
ODD - Odd
EVEN- Even
P7.01…P7.04 – Define the transmission format and the protocol used on the RS-232 communication port.
MENU P7 – SERIAL COMMUNICATION

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PAR Function Range Default
A01.1 Enable A01 OFF / On ON
A01.2 Latch (retenitive) OFF / On ON
A01.3 Lock breaker 1 OFF / On OFF
A01.4 Lock breaker 2 OFF / On OFF
A01.5 Global alarm relay OFF / On ON
A02.1 Enable A02 OFF / On ON
A02.2 Latch (retenitive) OFF / On ON
A02.3 Lock breaker 1 OFF / On OFF
A02.4 Lock breaker 2 OFF / On OFF
A02.5 Global alarm relay OFF / On ON
A03.1 Enable A03 OFF / On ON
A03.2 Latch (retenitive) OFF / On ON
A03.3 Lock breaker 1 OFF / On ON
A03.4 Lock breaker 2 OFF / On OFF
A03.5 Global alarm relay OFF / On ON
A04.1 Enable A04 OFF / On ON
A04.2 Latch (retenitive) OFF / On ON
A04.3 Lock breaker 1 OFF / On OFF
A04.4 Lock breaker 2 OFF / On ON
A04.5 Global alarm relay OFF / On ON
A05.1 Enable A05 OFF / On ON
A05.2 Latch (retenitive) OFF / On ON
A05.3 Lock breaker 1 OFF / On OFF
A05.4 Lock breaker 2 OFF / On OFF
A05.5 Global alarm relay OFF / On ON
A06.1 Enable A06 OFF / On ON
A06.2 Latch (retenitive) OFF / On ON
A06.3 Lock breaker 1 OFF / On OFF
A06.4 Lock breaker 2 OFF / On OFF
A06.5 Global alarm relay OFF / On ON
A07.1 Enable A07 OFF / On ON
A07.2 Latch (retenitive) OFF / On OFF
A07.3 Lock breaker 1 OFF / On OFF
A07.4 Lock breaker 2 OFF / On OFF
A07.5 Global alarm relay OFF / On ON
A08.1 Enable A08 OFF / On ON
A08.2 Latch (retenitive) OFF / On OFF
A08.3 Lock breaker 1 OFF / On OFF
A08.4 Lock breaker 2 OFF / On OFF
A08.5 Global alarm relay OFF / On ON
A09.1 Enable A09 OFF / On ON
A09.2 Latch (retenitive) OFF / On ON
A09.3 Lock breaker 1 OFF / On OFF
A09.4 Lock breaker 2 OFF / On OFF
A09.5 Global alarm relay OFF / On ON
A10.1 Enable A10 OFF / On ON
A10.2 Latch (retenitive) OFF / On ON
A10.3 Lock breaker 1 OFF / On ON
A10.4 Lock breaker 2 OFF / On ON
A10.5 Global alarm relay OFF / On ON
A11.1 Enable A11 OFF / On ON
A11.2 Latch (retenitive) OFF / On ON
A11.3 Lock breaker 1 OFF / On ON
A11.4 Lock breaker 2 OFF / On ON
A11.5 Global alarm relay OFF / On ON
MENU A – ALARMS
Axx.1 – General enable of the alarm. If alarm enable is set to OFF, the alarm is never generated.
Axx-.2 – For non-latching alarms, the indication disappears automatically when the alarm conditions expires, while for retentive ones a manual reset is needed
from the unit front panel. This is done by pressing key OFF / RESET (and then shifting to OFF mode).
Axx.3-Axx.4 – The open and close commands of the circuit breaker concerned are inhibited.
Axx.5 – If set to ON, when this alarm arises, the global alarm relay is energized.

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DIAGNOSTIC MESSAGES
– The ATL10 display can show messages to signal the implementation of a function or a particular situation
– By pressing one of the keys for measure selection, the diagnostic display is temporarily stopped to allow to view the measure.
KEYPAD LOCK
– The ATL10 keypad can be locked either by means of a programmable input or with a particular procedure from front keys
– Once the keypad is locked, it will only be possible to view measures, but not to change operating mode or to operate manually on circuit breakers. Only the
keys for measure selection will remain enabled
– Any attempt to use the locked keys will cause the message KEYBOARD LOCKED to be displayed
– To lock or unlock the keypad, press key B and, while holding it down, press key A three times without releasing it at the end
– Release then key B and then press it 5 times, then release both keys
– When the keypad is locked, the display shows the word KEYBOARD LOCKED. Conversely it has been unlocked, the message KEYBOARD UNLOCKED would
appear.
REMOTE CONTROL
– It is possible to connect ATL10 to a PC through its serial interface to access parameter programming and monitor the operation of the device using the
dedicated software ATLSW or using a generic SCADA software that supports Modbus protocol
– ATL10 can be connected directly in peer-to-peer configuration using the RS-232 serial interface port and cable code 51C2.
COMMANDS MENU
With this menu it is possible to execute the following parameters:
– Set the factory default parameters.
– Save a backup copy of user-edited setup parameters.
– Restore the set-up to the values saved in the backup memory.
– To access the commands menu hold D, press A for 2 times then press B for 3 times, press C for 4 times.
– The display will show COMMANDS MENU, wait a few seconds or press the D key to access menus.
– The display shows the code of the first menu C01 and its description.
– Press key A to select the parameter.
– Press E to execute the selected command.
– Press key D to quit commands menu.
– If no keys are pressed for more than 2 minutes, the unit exits menu automatically .
MESSAGES
GENERATOR STARTING
COOLING TIME
LINE FAILURE SIMULATION
---- (Interlock time in progress)
KEYPAD LOCK
KEYPAD UNLOCK
COMMANDS MENU
C01 PARAMETERS TO FACTORY DEFAULT
C02 BACKUP PARAMETRER SET-UP
C03 RESTORE PARAMETER SET-UP

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OVERALL DIMENSIONS AND PANEL CUTOUT [mm]
82
90
96 12
92
96
92
6
Control of motorised circuit breakers
L1
LOAD
L2 L3 N
LINE 2
L2
Q1
L1
LINE 1
L3L2 N L1
Q2
QF2
QF1
NL3
CLOSING
POWER SUPPLY POWER SUPPLY
INTERLOCK
STATUS
Q1
CLOSING
OPENING
TRIP
Q2
INTERLOCK
STATUS
OPENING
TRIP
2.1
DIGITAL INPUTS
ATL10
LINE 2
5.3 4.1 4.3 4.2 5.2 5.1
LINE 1
L3
7.3
N
7.4
7.2 L2
7.1 L1
LINE 2
3.3 3.1 3.2
3.4
3.5
AUX
L26.2
6.4 N
6.3 L3
6.1 L1
LINE 1
SUPPLY
DC
2.6 2.4 2.2 2.3 2.5
1.2
1.1
RS232
OUT
LINE 2LINE 1
DUAL POWER SUPPLY
N
L
LNL
N
REAR TERMINAL CONNECTIONS
7.4
-
1.2 1.1
2.1
2.6
2.4 2.3
2.2
2.5
6.1 6.2 6.3 6.4 7.1 7.2 7.3
DIGITAL INPUTS
12...48 V=
BATTERY
3.2
L1
3.1
L3L2
3.4
AUX
RELAY
3.3
3.5
RS232
L2NL1
RELAY
LINE1
4.2
4.1 4.3
NL3
5.2
RELAY
LINE 2
5.1
5.3
LINE 1 LINE 2
Parameter setting for the wiring diagram in picture
Terminal Parameter code Setting
4.1 P6.1.1 OP.1
4.3 P6.2.1 CL.1
5.1 P6.3.1 OP.2
5.3 P6.4.1 CL.2
2.1 P5.1.1 Fb.1
2.2 P5.2.1 Fb.2
2.3 P5.3.1 TR.1
2.4 P5.4.1 TR.2

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Control of motorised changeover switch
L1
LOAD
L2 L3 N
LINE 2
L2
Q1
L1
LINE 1
L3L2 N L1
DUAL POWER SUPPLY
Q2
QF2
N
L
QF1
NL3
POWER SUPPLY
2 CLOSED
1 - 2 OPENED
Q2
Q1
CLOSING 1
OPENING ALL
CLOSING 2
1 CLOSED
ATL10
2.1
DIGITAL INPUTS
LINE 2
5.3
4.1 4.3 4.2
5.2 5.1
LINE 1
L3
7.3
N
7.4
7.2 L2
7.1 L1
LINE 2
3.3
3.1 3.2 3.4 3.5
AUX
L26.2
6.4 N
6.3 L3
6.1 L1
LINE 1
SUPPLY
DC
2.6 2.4 2.5 2.2 2.3
1.2 1.1
RS232
NN L
L
LINE 1
OUT
LINE 2
Parameter setting for the wiring diagram in picture
Terminal Parameter code Setting
4.1 P6.1.1 OP.A
4.3 P6.2.1 CL.1
5.3 P6.4.1 CL.2
2.1 P5.1.1 Fb.1
2.2 P5.2.1 Fb.2
Control of contactors
L1
LOAD
L2 L3 N
LINE 2
L2
K1
L1
LINE 1
L3L2 N L1
K2
QF2
QF1
NL3
ATL10
K1
5.2
LINE 2
5.1
4.2
4.3 4.1
7.3
7.4
7.2
7.1
LINE 2
L3
LINE 1
N
L2
L1
3.2
3.1
5.3
3.5
3.4
3.3
AUX
6.2
6.4
6.3
6.1
L2
LINE 1
N
L3
L1
1.2
DC
SUPPLY
2.6
DIGITAL INPUTS
2.3
2.2 2.5 2.4 2.1
K2
1.1
RS232
K1
K2
K2
K1
Parameter setting for the wiring diagram
Terminal Parameter code Setting
4.3 P6.2.1 CL.1
5.3 P6.4.1 CL.2
2.1 P5.1.1 Fb.1
2.2 P5.2.1 Fb.2
–– P2.07 CNT

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Dual power supply module – auxiliary voltage control by ATL10
+ optional DC power supply (if battery supply not available)
DUAL POWER SUPPLY
N
L
LINE 1
N
L
N
LINE 2
L
OUT
1.1
SUPPLY
DC
ATL10
POWER SUPPLY
AC
DC
DC
+
OUT
_
3.3 3.1 3.2
+
3.4 3.5
AUX
_
1.2
Dual power supply module – auxiliary voltage control by voltage monitoring relay
K1
K2 K1 K3
L
L
LINE 2
N
LINE 1
N
A1
14
K1
K3
K2
K3
A2
K2 K2
11
12
TRMS
K1
N
L
OUT
Gen-set application only
Line 2 coming from generator
Auxiliary voltage control by ATL10
+ optional DC power supply (if battery supply not available)
Note:
– The output on terminals 3.1-3.2 (parameter P6.5.1) must be set with function L1.S.
– Set output S.GE so that when ATL10 is not powered, gen-set must start.
K2 K1 K3
LINE 2 N
L
LINE 1
L
N
K2
K1
K3
K2
K3 K2 K1
OUT
N
L
K1
ATL10
DC
SUPPLY
DC
AC
OUT
POWER SUPPLY
DC
3.3
3.2 3.1
1.1
3.5 3.4
AUX
1.2

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Measurement accuracy
Test conditions
Temperature +23°C ±1°C
Relative humidity 45 ±15%
Voltage ±0.5% f.s. ±1digit (0.1...1.2 Ue)
Frequency ±0.1% ±1digit
Ambient conditions
Operating temperature -20...+60°C
Storage temperature -30...+80°C
Relative Humidity <90% non-condensing (IEC/EN 60068-2-78)
Altitude ≤2000m
Overvoltage category 3
Measurement category CAT III
Maximum pollution degree 3
Climatic sequence Z/ABDM (IEC/EN 60068-2-61)
Shock resistance 10g (IEC/EN 60068-2-27)
Vibration resistance 0.7g (IEC/EN 60068-2-6)
Insulation voltage
Rated insulation voltage Ui 480V

Rated impulse withstand voltage 4,0kV Uimp
Low voltage circuits ( Digita inputs, Double insulation
RS232 and AUX relay outputs)
Connections
Type of terminal Removable screw terminal, plug-in
Conductor cross section (min - max) 0.2...2.5 mm2(24...12 AWG)
Tightening torque 0.5 Nm (4.5 LBin)
Housing
Version Flush-mount 96x96mm
Material Noryl UL94 V-0 black self-extinguishing
Degree of protection IP54 on front - IP20 inside panel
Weight 470g
Certifications and compliance
Certifications obtained cULus
Compliant with standard IEC/EN 60947-6-1, IEC/EN 61010-1, IEC/EN 61000-6-2,
IEC/ EN 61000-6-3, UL508 and CSA C22.2 N°14
UL Marking Use 60°C/75°C copper (CU) conductor only
“For use on a flat surface of a Type 1 Enclosure”
AWG Range: 24 - 12 AWG stranded or solid
Field Wiring Terminals Tightening Torque: 4.5lb.in
TECHNICAL CHARACTERISTICS
Auxiliary supply
Rated battery voltage 12 or 24 or 48V
Maximum input current 250mA at 12V , 130mA at 24V
, 70mA at 48V
Maximum input power consumption 3.3W
Operating voltage range 9...60V
Digital inputs
Type of polarity Negative
Input current 8mA
Low input level ≤1.5V (2.9V typical)
High input level ≥5.3V (4.3V typical)
Input signal delay ≥50ms
Line 1 and Line 2 AC voltage inputs
Maximum rated voltage Ue 100…480V
 L-L (277V  L-N)
Measuring range 50…576V
 L-L (330V  L-N)
Frequency range 45...66Hz
Type of measurement TRMS
Input impedance >1,1MΩbetween L-L and >570kΩbetween L-N
Wiring mode 1, 2 or 3 phase with or without neutral
Relay outputs for Line 1 switch control (voltage free)
Number of relays 2
Type of contact 1 N/O (single common)
Operating category B300 – 8A 250V
 AC1
30V 8A - 30VDC 1A Auxiliary duty
Maximum current on 4.2 terminal 12A
Relay outputs for Line 2 switch control (voltage free)
Number of relays 2
Type of contact 1 N/O (single common)
Operating category B300 – 8A 250V
 AC1
30V 8A - 30VDC 1A Auxiliary duty
Maximum current on 5.2 terminal 12A
Auxiliary relay outputs (voltage free)
Number of relays 2
Type of contact 1 N/O + 1 C/O
Operating category 30V 8A - 30VDC 1A Auxiliary duty
Serial interface
Type of interface RS232
Baud-rate Programmable 1200...38400bps
Type of connection RJ6/6
GB

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I300 GB I E 05 13 31100121
LOVATO ELECTRIC S.P.A.
24020 GORLE (BERGAMO) ITALIA
VIA DON E. MAZZA, 12
TEL. [phone]
FAX (Nazionale): 035 4282200
FAX (International): [phone]
E-mail [e-mail]
Web www.LovatoElectric.com
ATL10
COMMUTATORE AUTOMATICO DI RETEI
ATTENZIONE!!
– Leggere attentamente il manuale prima dell’utilizzo e l’installazione.
– Questi apparecchi devono essere installati da personale qualificato, nel rispetto delle vigenti normative impiantistiche, allo scopo di evitare danni a persone o
cose.
– Prima di qualsiasi intervento sullo strumento, togliere tensione dagli ingressi di misura e di alimentazione e cortocircuitare i trasformatori di corrente.
– Il costruttore non si assume responsabilità in merito alla sicurezza elettrica in caso di utilizzo improprio del dispositivo.
– I prodotti descritti in questo documento sono suscettibili in qualsiasi momento di evoluzioni o di modifiche. Le descrizioni ed i dati a catalogo non possono
pertanto avere alcun valore contrattuale.
– Un interruttore o disgiuntore va compreso nell’impianto elettrico dell’edificio. Esso deve trovarsi in stretta vicinanza dell’apparecchio ed essere facilmente
raggiungibile da parte dell’operatore. Deve essere marchiato come il dispositivo di interruzione dell’apparecchio: IEC/EN 61010-1 § 6.11.2.
– Pulire lo strumento con panno morbido, non usare prodotti abrasivi, detergenti liquidi o solventi.
INDICE Pag.
DESCRIZIONE ........................................................................................................................................................................................................................... 16
APPLICAZIONI .......................................................................................................................................................................................................................... 17
INSTALLAZIONE ....................................................................................................................................................................................................................... 17
FRONTALE ................................................................................................................................................................................................................................ 17
SELEZIONE MISURE ................................................................................................................................................................................................................. 17
LED STATO ............................................................................................................................................................................................................................... 18
SELEZIONE MODALITA’ OPERATIVA ........................................................................................................................................................................................ 18
MODALITA’ OFF-RESET ............................................................................................................................................................................................................ 18
MODALITA’ MAN ...................................................................................................................................................................................................................... 18
MODALITA’ AUT ........................................................................................................................................................................................................................ 18
SIMULAZIONE MANCANZA LINEA PRIORITARIA ..................................................................................................................................................................... 18
APPLICAZIONE RETE-GENERATORE ........................................................................................................................................................................................ 18
APPLICAZIONE RETE-RETE ...................................................................................................................................................................................................... 19
FUNZIONE EJP .......................................................................................................................................................................................................................... 19
COMANDO DISPOSITIVI DI COMMUTAZIONE .......................................................................................................................................................................... 19
COMANDO INTERRUTTORI MOTORIZZATI .............................................................................................................................................................................. 19
COMANDO COMMUTATORI MOTORIZZATI .............................................................................................................................................................................. 19
COMANDO CONTATTORI .......................................................................................................................................................................................................... 19
CONTROLLI DI TENSIONE ........................................................................................................................................................................................................ 19
ALLARMI .................................................................................................................................................................................................................................. 20
IMPOSTAZIONE DEI PARAMETRI (SET-UP) ............................................................................................................................................................................. 20
TABELLA DEI MENU ................................................................................................................................................................................................................. 20
MENU P1 – DATI NOMINALI .................................................................................................................................................................................................... 21
MENU P2 – DATI GENERALI ..................................................................................................................................................................................................... 21
MENU P3 – CONTROLLO TENSIONE LINEA 1 .......................................................................................................................................................................... 22
MENU P4 – CONTROLLO TENSIONE LINEA 2 .......................................................................................................................................................................... 22
MENU P5 – INGRESSI PROGRAMMABILI ................................................................................................................................................................................ 23
MENU P6 – USCITE PROGRAMMABILI .................................................................................................................................................................................... 24
MENU P7 – COMUNICAZIONE SERIALE ................................................................................................................................................................................... 24
MENU A – ALLARMI ............................................................................................................................................................................................................... 25
MESSAGGI DIAGNOSTICI ......................................................................................................................................................................................................... 26
BLOCCO TASTIERA ................................................................................................................................................................................................................... 26
CONTROLLO REMOTO ............................................................................................................................................................................................................. 26
MENU COMANDI ...................................................................................................................................................................................................................... 26
CONNESSIONI SUL RETRO ...................................................................................................................................................................................................... 27
DIMENSIONI MECCANICHE E FORATURA ................................................................................................................................................................................ 27
SCHEMI DI COLLEGAMENTO ................................................................................................................................................................................................... 27
CARATTERISTICHE TECNICHE ................................................................................................................................................................................................. 30
DESCRIZIONE
– Commutatore automatico di rete a microprocessore.
– Due ingressi di misura tensione trifasi+neutro
– Alimentazione DC 12-24-48 V
– Display a LED, 4 cifre a 14 segmenti.
– 15 LED visualizzazione stati e misure
– Tastiera a membrana 6 tasti
– Interfaccia seriale RS-232 per set-up, controllo remoto e supervisione
– 6 ingressi digitali programmabili
– 6 uscite a relè (5NO + 1 C/O) programmabili.
RU
Available in Russian at www.LovatoElectric.com/I300RU.pdf

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APPLICAZIONI
– Commutazione fra linea-linea o linea-generatore
– Comando di interruttori motorizzati, commutatori motorizzati o contattori
– Controllo di reti trifasi, bifasi o monofasi
– Controllo sulle tensioni concatenate e/o sulle tensioni di fase
– Controlli di minima tensione, massima tensione, mancanza fase, asimmetria, minima frequenza, massima frequenza, con abilitazione e ritardo di intervento
indipendenti
– Soglie di tensione con isteresi programmabile.
INSTALLAZIONE
– Installare l’apparecchio secondo gli schemi di connessione riportati nelle ultime pagine del manuale
– Utilizzare lo schema di collegamento corretto per l’applicazione
– Programmare i parametri in funzione dello schema di collegamento adottato, facendo particolare attenzione alla programmazione degli ingressi / uscite.
FRONTALE
– Il frontale dell’apparecchio è provvisto di un display a LED per indicare le tensioni delle due sorgenti di alimentazione (Line 1 e Line 2) e di un relativo tasto
per scorrere le misure (A)
– Tre tasti OFF/RESET-MAN-AUT (B-C-D) permettono di selezionare la modalità operativa, che viene indicata dal LED corrispondente
– Nel centro del frontale è rappresentato un sinottico indicante la presenza delle sorgenti di alimentazione e lo stato degli interruttori per la connessione del
carico
– Due pulsanti (F e E) consentono di manovrare manualmente gli interruttori.
SELEZIONE MISURE
– Premendo più volte il tasto situato a destra del display (A) e’ possibile visualizzare in sequenza le varie misure
– Per ciascuna linea sono disponibili le tensioni concatenate, le tensioni di fase e la frequenza
– La tensione di alimentazione da batteria è visualizzabile tramite il LED dedicato
– Le combinazioni dei LED rossi indicano quale misura e’ selezionata. La lista delle misure varia a seconda se l’apparecchio e’ impostato per il controllo trifase,
bifase o monofase
– Dopo 1 minuto senza toccare il tasto la misura torna alla misura di default, che può essere la prima tensione concatenata o la prima tensione di fase a
seconda di come e’ impostato il controllo di tensione
– In caso di allarmi o messaggi, il display visualizza una scritta scorrevole. Premendo il tasto di selezione A si può mascherare temporaneamente l’allarme ed
accedere alle misure
– Quando il carico viene commutato da linea1 a linea 2, la misura selezionata sul display segue automaticamente il carico.

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LED DI STATO
– Sul frontale sono presenti alcuni LED che indicano lo stato dell’apparecchio e/o degli interruttori da esso comandati
– Nella seguente tabella sono riportati i significati dei vari LED:
LED COL. ACCESO SPENTO LAMPEGG.
1 Rosso Selezione misure
2,3 Verde Tensioni e frequenza nei limiti Tensioni o frequenza fuori Tempi di ritardo presenza o
impostati dai limiti mancanza in corso
4,5 Giallo Interruttore chiuso Interruttore aperto Interruttore in manovra
6 Rosso Modo OFF / RESET OFF / RESET
Controllo remoto in corso
7 Rosso Modo MAN MAN
Controllo remoto in corso
8 Rosso Modo AUT AUT
Controllo remoto in corso
9 Rosso Allarme attivo

Se i segnali ausiliari (feedback) sono stati collegati e programmati opportunamente i LED rappresentano lo stato degli interruttori, altrimenti rappresentano lo stato delle uscite di
comando.
SELEZIONE MODALITA’ OPERATIVA
– Per mezzo dei tre tasti OFF-RESET / MAN / AUT è possibile selezionare la modalità operativa desiderata, che verrà indicata dalla accensione del
corrispondente LED rosso
– La modalità operativa viene mantenuta quando si disalimenta e si rialimenta l’apparecchio
– Se il LED che indica la modalità operativa selezionata lampeggia, indica che l’apparecchio sta comunicando attraverso l’ interfaccia seriale e che potrebbe
effettuare dei comandi impartiti da remoto, fra cui anche il cambio della modalità stessa.
MODALITA’ OFF-RESET
– In questa modalità l’apparecchio risulta disabilitato, e non intraprende nessuna azione
– Tutte le visualizzazioni sia delle misure che dei LED di stato rimangono attive
– Se il comando dei dispositivi di commutazione è di tipo impulsivo, in OFF-RESET entrambi i comandi rimangono disattivati. Se invece è in modalità comando
continuo, il comportamento può essere selezionato tramite P2.19
– Per poter accedere ai menu di programmazione è sempre necessario spostarsi preventivamente in modalità OFF-RESET
– Premendo sul tasto OFF-RESET si possono azzerare gli allarmi ritenitivi, a patto che le condizioni che hanno generato l’allarme siano state rimosse.
MODALITA’ MAN
– In modalità MAN è possibile comandare manualmente gli interruttori premendo il relativo tasto (tasti F e E) per un tempo minimo di 300ms
– Ad ogni pressione del tasto viene commutato lo stato dell’interruttore. Il comando viene accettato se è trascorso almeno 1s dal termine della commutazione
precedente
– Se viene comandata manualmente la chiusura di un interruttore mentre l’altro è ancora chiuso, l’apparecchio procederà prima alla apertura dell’altro
interruttore e poi alla chiusura di quello comandato, interponendo il tempo di interblocco programmato
– Quando si lavora con un gruppo elettrogeno, è possibile comandare manualmente l’accensione e lo spegnimento del generatore sulla linea non prioritaria
tenendo premuto il pulsante MAN per 5 secondi.
MODALITA’ AUT
– In modalità automatico l’apparecchio esegue autonomamente sia le operazioni di apertura e chiusura degli interruttori sia l’avviamento e l’arresto
dell’eventuale gruppo elettrogeno
– Quando la linea prioritaria esce dai limiti, per un tempo superiore a quelli di ritardo impostati (LED verde presenza linea spento), l’apparecchio scollega il carico
dalla linea prioritaria e lo collega alla linea secondaria, gestendo sia l’avviamento dell’eventuale gruppo elettrogeno sia i tempi di manovra e di interblocco
– E’ possibile programmare l’apparecchio in modo da aprire l’interruttore dalla linea prioritaria prima oppure dopo che la linea alternativa si è resa disponibile
– Quando la linea prioritaria rientra nei limiti, l’apparecchio ricommuta il carico su di essa e provvede all’eventuale ciclo di raffreddamento del gruppo elettrogeno
– I cicli di funzionamento automatico variano sia in funzione del tipo di applicazione (rete-rete, rete-gruppo) che in funzione del tipo di dispositivi di
commutazione impiegati (interruttori motorizzati, commutatori motorizzati o contattori).
SIMULAZIONE MANCANZA LINEA PRIORITARIA
– Partendo dalla modalità AUT, è possibile effettuare una simulazione di una mancanza di tensione sulla linea prioritaria della durata di 1 min
– L’apparecchio reagirà utilizzando lo stesso comportamento e le stesse tempistiche impostate per il normale funzionamento automatico. Sarà così possibile
verificare il corretto funzionamento dei cicli di trasferimento
– Partendo dalla modalità AUT, premere il tasto AUT ed il tasto ON-OFF linea 2 contemporaneamente per 10 secondi consecutivi
– Sul display comparirà la scritta F.SI (Failure Simulation) durante l’esecuzione di tutto il ciclo
– Per terminare anticipatamente la prova, ripetere la procedura di avvio o passare in modalità OFF – RESET.
APPLICAZIONE RETE-GENERATORE
– Nell’applicazione rete-generatore (U-G, impostazione di default) il carico è normalmente collegato alla rete (Linea 1)
– In seguito ad una anomalia di tensione o frequenza, dopo il tempo di ritardo P2.13, viene mandato un segnale di start al generatore (Linea 2)
– Quando la tensione del generatore rientra nei limiti programmati, il carico viene commutato sul generatore
– Quando la rete ritorna normale il carico viene ricommutato, ed il generatore viene mantenuto in moto senza carico per un tempo definito da P2.14 in modo
da consentirne il raffreddamento
– La centralina ATL10 invia al generatore un comando di start/stop attraverso una uscita a relè e può ricevere dei segnali digitali dal generatore che ne indicano
lo stato (generatore pronto, ok alla presa del carico ecc) attraverso degli ingressi programmabili.

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APPLICAZIONE RETE-RETE
– Nell’applicazione rete-rete (U-U, utility-utility), il carico è normalmente collegato alla rete prioritaria e il trasferimento sulla secondaria avviene in caso di
anomalia sulla primaria o di segnale di trasferimento imposto dall’esterno.
FUNZIONE EJP
– Per applicazioni che richiedono la funzione EJP è possibile utilizzare due ingressi programmabili impostati sulle funzioni S.GE (start generator) e E.TR
(External transfer)
– Si può inoltre utilizzare il parametro P2.20 per definire un ritardo di avviamento generatore.
COMANDO DISPOSITIVI DI COMMUTAZIONE
– Per la commutazione delle linee, ATL10 è in grado di controllare diversi tipi di dispositivi quali interruttori motorizzati, commutatori motorizzati o contattori
– A seconda del tipo di dispositivi di commutazione utilizzati in abbinamento all’ATL10, si devono utilizzare gli opportuni schemi di collegamento con la relativa
programmazione degli ingressi / uscite programmabili
–
Le uscite programmabili sono impostate di default per l’applicazione con interruttori motorizzati. Vedere gli schemi di collegamento riportati alla fine del manuale
– Gli ingressi di feedback dello stato del dispositivo vanno normalmente cablati, in modo da garantire un funzionamento affidabile del sistema
– Ciononostante, è comunque possibile evitare il loro cablaggio e destinare gli ingressi programmabili ad altre funzioni. In questo caso l’apparecchio si
comporta come se il dispositivo eseguisse immediatamente il comando inviato
– Se gli ingressi di feedback non sono utilizzati, al momento della messa in tensione l’ATL10 esegue un comando di apertura per portare i dispositivi di
commutazione in una posizione nota
– Se invece vengono utilizzati gli ingressi di feedback, al momento della messa in tensione l’ATL10 non invia comandi ai dispositivi di commutazione fino a che
lo stato della relativa linea non e’ stabilizzato (sono trascorsi i tempi di presenza o assenza tensione)
– I relè di comando interni non sono interbloccati elettricamente ne meccanicamente.
COMANDO INTERRUTTORI MOTORIZZATI
– Per il comando di interruttori motorizzati, sono necessarie 4 uscite (comandi apertura e chiusura per linea 1 e linea 2) e due ingressi per il feedback dello
stato degli interruttori, più eventuali ulteriori ingressi opzionali di segnalazione allarme intervento protezione (TRIP)
– I comandi di chiusura e apertura possono essere mantenuti continuamente o ad impulso, cioè mantenuti fino a che l’interruttore si è portato nella posizione
voluta + un tempo di sicurezza
– Le due modalità di comando possono essere selezionate tramite l’apposito parametro P2.07 nel menu dati generali
– Se un comando di chiusura interruttore non ha successo, prima di generare un allarme di timeout l’apparecchio esegue un ciclo di apertura (caricamento
molle) e poi ritenta la chiusura. Se questa fallisce di nuovo viene generato l’allarme.
– Gli ingressi di TRIP vengono ignorati per una finestra di 15 secondi ogniqualvolta viene inviato un comando di apertura agli interruttori. Questo per evitare un
falso allarme nel caso in cui vengano utilizzati degli interruttori che inviano momentaneamente il segnale di TRIP durante l’apertura tramite bobina di sgancio.
COMANDO COMMUTATORI MOTORIZZATI
– L’applicazione con commutatori motorizzati e’ molto simile alla precedente, ma prevede l’utilizzo di sole tre uscite (comandi chiusura linea1, linea 2 ed
apertura di entrambe le linee) e due ingressi per lo stato del commutatore
– Sono necessarie le funzioni di uscita CL.1, CL.2 e OP.A le funzioni di ingresso FB.1 e FB.2
– Anche in questo caso è possibile selezionare la modalità di comando fra impulsiva e continua.
COMANDO CONTATTORI
– Se viene utilizzata una coppia di contattori, sono necessarie due uscite (CL.1 e CL.2) e due ingressi per il feedback dello stato
– In questo caso il comando deve essere programmato in modalità contattori (P2.07 = CNT).
CONTROLLI DI TENSIONE
– Tutte le condizioni che servono a stabilire se una sorgente di alimentazione è idonea o meno vengono definite dall’utente attraverso il menu P1 (dati nominali)
e i menu P3 e P4 (rispettivamente limiti di tensione linea 1 e linea 2)
– Tramite il menu P1 si possono impostare i dati nominali dell’impianto, quali tensione e frequenza nominali, che verranno utilizzati come riferimento per la
impostazione delle soglie percentuali
–
E’ possibile impostare un rapporto di trasformazione TV nel caso agli ingressi di tensione dell’apparecchio venga applicata una tensione più bassa rispetto a
quella effettiva dell’impianto. Anche in questo caso sia la visualizzazione che la impostazione delle soglie saranno effettuate in grandezze reali riferite all’impianto
– La centralina può essere programmata per effettuare i controlli di tensione su reti trifasi con o senza neutro, bifasi o monofasi (P1.03)
– Nel caso di reti trifasi o bifasi, si può scegliere se monitorare le tensioni concatenate, le tensioni di fase oppure entrambe (P1.04). in ogni caso la tensione
nominale impostata con P1.01 deve essere sempre riferita alla tensione concatenata
– Nella seguente tabella sono elencati i controlli che vengono effettuati su ciascuna linea. Quelli indicati con OFF possono essere esclusi
Controllo Descrizione OFF
Minima tensione Una o più fasi troppo basse
Massima tensione Una o più fasi troppo alte
G
Mancanza fase Soglia sotto la quale l’apparecchio interviene più rapidamente rispetto ad un normale G
abbassamento.
Asimmetria (sbilanciamento) Fasi comprese nell’intervallo Massima-Minima ma troppo differenti fra loro
G
Minima frequenza Frequenza troppo bassa G
Massima frequenza Frequenza troppo alta G
Sequenza fasi Rotazione delle fasi inversa G
– Ciascuna delle anomalie ha un tempo di ritardo indipendente. L’anomalia deve durare consecutivamente più del tempo specificato per invalidare il segnale di
presenza tensione
– Quando tutti i parametri della linea rientrano all’interno dei limiti specificati, prima che la stessa possa essere considerata utilizzabile, deve trascorrere il
tempo di ritardo presenza linea. La durata di questo tempo è specificata con due parametri indipendenti, uno che definisce il tempo di ritardo quando la linea
alternativa è disponibile ed un altro che definisce il ritardo, di solito più corto, quando la linea alternativa non è disponibile
– Tutti i controlli eccetto quello di minima tensione possono essere esclusi indipendentemente, impostando il relativo parametro su OFF
– I limiti di minima e di massima tensione sono specificati con l’impostazione di due soglie ciascuno, una che definisce il punto oltre il quale la tensione viene
considerata non più accettabile (es. P3.01, drop-out) ed un altra, più vicina alla tensione nominale, che definisce il punto in cui ritorna ad essere compatibile
(es. P3.02, pick-up). La distanza fra queste due soglie definisce l’isteresi. Ad esempio si potrebbe definire che sotto l’80% della nominale la tensione sia non
piu’ utilizzabile e che per essere considerata buona debba risalire sopra l’85%, definendo così una isteresi (dead-band) del 5%. Lo stesso concetto si applica
per la tensione massima
– Per le soglie di frequenza esiste una isteresi fissa pari all’1% della frequenza nominale
– Per la soglia mancanza fase, il ripristino si ha quando la tensione risale oltre la soglia di ripristino tensione minima.

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ALLARMI
– Quando si verifica una situazione di allarme l’ATL10 visualizza un codice sui display
– Per gli allarmi non ritenitivi, l’indicazione scompare automaticamente quando le condizioni di allarme cessano, mentre per quelli ritenitivi è necessario un
reset manuale dal frontale dell’apparecchio, che si effettua premendo il tasto OFF / RESET (e quindi passando in modalita’ OFF)
– La presenza di un qualsiasi allarme è segnalata dall’accensione lampeggiante dell’ apposito Led ALARM
– In presenza di un allarme, sia l’uscita di allarme globale (ALA) che quella di ATS pronto (RDY) vengono diseccitate
– E’ possibile disabilitare un allarme programmando su OFF il parametro che ne definisce la soglia oppure l’ingresso programmabile che lo genera
– Nella seguente tabella sono indicati i possibili allarmi ed il loro significato. La colonna MOD indica le modalità operative (OFF MAN AUT ) in cui l’allarme è
abilitato.
A01 - A02 – Tensione di batteria al di fuori delle soglie per un tempo superiore a quello impostato.
A03 - A04 – Il dispositivo di commutazione non ha eseguito la manovra di apertura o di chiusura entro il tempo max impostato. Dopo che l’allarme è stato
generato, il comando di apertura o chiusura viene inibito.
Gli allarmi vengono generati solo se almeno una delle due sorgenti di alimentazione è presente, cioè più elevata delle soglie minime programmate.
A05 - A06 – La sequenza fase rilevata rispettivamente su linea1 e linea 2 non corrisponde a quella programmata.
A07 – Il carico è rimasto senza alimentazione per un tempo superiore a quanto programmato con P2.11, o perché non erano disponibili le linee di alimentazione
oppure perché gli interruttori sono rimasti entrambi aperti.
A08 – Puo’ essere generato dalla apertura dell’ingresso esterno di generatore non pronto, oppure quando dopo aver comandato lo start generatore, la tensione
generatore non risulta disponibile entro il tempo specificato da P2.11. Se l’allarme viene generato dall’ingresso esterno, allora non è ritenitivo, altrimenti è
ritenitivo e va quindi azzerato con il tasto RESET/OFF.
A09 – allarme generato dalla apertura dell’ingresso esterno di emergenza. Entrambi gli interruttori vengono aperti.
A10-A1 1– Generato dalla chiusura dell’ingresso programmabile Trip (funzioni TR.1 e TR.2). I comandi di apertura e chiusura dell’interruttore in oggetto vengono
inibiti.
IMPOSTAZIONE DEI PARAMETRI (SET-UP)
– Per accedere al menu impostazioni, con l’apparecchio in modalità OFF-RESET, premere i tasti A e D contemporaneamente per 5 secondi consecutivi,
comparirà la scritta MENU SETUP, attendere alcuni secondi o premere il tasto D per accedere ai menu
– Sul display comparirà il codice del primo parametro P1.01, cioè menu P1, parametro 01
– Premere i tasti A e B per spostarsi avanti e indietro fra i parametri dello stesso menu
– Premere i tasti E e F per spostarsi fra i vari menu
– Premere il tasto C per passare dalla visualizzazione del codice del parametro a quella del valore del parametro corrispondente
– Premere i tasti A e B per modificare l’impostazione del parametro selezionato
– Premere il tasto D per uscire dalla impostazione parametri
– Premere i tasti E e F contemporaneamente per tornare alla impostazione di default
– Se non vengono premuti tasti per un tempo superiore ai 2 minuti l’apparecchio esce automaticamente dal setup senza memorizzare i cambiamenti.
COD Descrizione MOD
A01 Tensione batteria troppo bassa O M A
A02 Tensione batteria troppo alta O M A
A03 Timeout interruttore Linea 1 A
A04 Timeout interruttore Linea 2 A
A05 Errata sequenza fase Linea 1 O M A
A06 Errata sequenza fase Linea 2 O M A
A07 Timeout carico non alimentato A
A08 Generatore non disponibile O M A
A09 Emergenza O M A
A10 Intervento protezione - Interruttore Linea 1 (trip) A
A11 Intervento protezione - Interruttore Linea 2 (trip) A
TABELLA DEI MENU
MENU Descrizione
P1 Dati nominali dell’impianto
P2 Dati generali
P3 Controllo tensione linea 1
P4 Controllo tensione linea 2
P5 Ingressi programmabili
P6 Uscite programmabili
P7 Porta di comunicazione
A Allarmi