LOVATO ELECTRIC ATL900 User manual

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ATL900
AUTOMATIC TRANSFER SWITCH
INSTRUCTION MANUAL
●Before any maintenance operation on the device, remove all voltages from measuring and supply inputs.
●The manufacturer cannot be held responsible for electrical safety in case of improper use of the equipment.
●The product illustrated herein are subject to alteration and changes without prior notice. Descriptions and information in the catalogue consequently have no contractual relevance.
●A circuit breaker must be included in the electrical installation of the building. It must be installed close by the equipment and within easy of the operator. It must be marked as the equipment’s
disconnecting device: IEC/ EN 61010-1 § 6.12.2.1.
●Clean the equipment with a soft cloth; do not use abrasive products, liquid detergents or solvents.
Contents Page
Introduction 2
Description 2
Front button functions 2
Front LEDs 2
Operating modes 3
Energising the equipment 3
Main menu 3
Password protected access 4
Navigating the display pages 4
Synoptic 4
Display pages table 5
Expandability 6
A
dditional resources 6
Communication channels 7
Inputs, outputs, internal variables, counters, analog inputs 7
Limit thresholds (LIMx) 7
Remote variables (REMx) 7
User alarms (UAx) 8
PLC logic (PLCx) 8
Timers (TIMx) 8
A
utomatic test 8
Keypad loc
k
8
IR programming port 9
Parameter setting from PC 9
Parameter setting from smartphone or tablet with CX02 9
Parameter setting via NFC 9
Parameter settings (setup) from front panel 10
Parameter table 11
A
larms 23
A
larm properties 23
A
larms table 23
Description of the alarms 24
Programmable inputs functions table 25
Programmable inputs default 26
Programmable outputs functions table 26
Programmable outputs default 27
System layout 28
Command menu 31
Installation 32
Connection diagrams 32
Terminal arrangement 35
Mechanical dimensions and panel perforation 36
Technical characteristics 37
Manual revision history 38
I437GB0
4
16
CAUTION
●Read this manual before use and installation.
●This equipment must be installed by qualified personnel according to
applicable standards in order to prevent injury or damage to property.

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Introduction
The ATL900 control unit implements state-of-the-art functions required for automatic transfer applications.
The system incorporates a unique series of hardware and software features which guarantee high flexibility, e.g. management of three supply source lines and two tie breakers,
graphic display, double power supply, expansion modules, programmable system layout, integrated PLC etc., for use in a wide variety of possible conditions of application, all of
which can be programmed by the user. The graphic display shows and allows to control the system situation effectively. The expansion slots allows to increase the hardware
resources also allowing adaptability to future needs.
Description
 Graphic LCD 128x112 pixel, backlit, 4 grey levels.
 Texts for measurements, settings and messages in 8 languages (ENG-ITA-FRA-SPA-DEU-POR-POL-RUS).
 14 possible system configurations, with 2 or 3 power sources and 1 or 2 tie breakers.
 3 voltage measuring inputs, three phase + neutral.
 Free source type configuration (mains or genset) and respective priority for all system configurations.
 Non-priority load management.
 Control of motorised breakers, motorised changeover switches or contactors.
 Management of gensets with automatic test and emergency rotation.
 Control of three-phase, two-phase and single-phase networks.
 Control of concatenated voltages and/or phase voltages.
 Control of minimum voltage, maximum voltage, phase loss, asymmetry, minimum frequency, maximum frequency with independent enabling and tripping delay.
 Voltage thresholds with programmable hysteresis.
 Possibility of transferring load with closed transition and spontaneous or controlled genset synchronisation.
 100-240Vac auxiliary power supply.
 12-24-48Vdc battery power supply.
 Front optical programming interface.
 Advanced programmable I/O functions.
 Integrated programmable PLC logic (50 lines, 8 columns).
 Alarm properties entirely definable by the user.
 High accuracy of true RMS measurements (TRMS)
 12 programmable digital inputs (negative).
 11 digital outputs:
o 3 relays with NO contact 12A 250VAC.
o 3 relays with NO contact 8A 250VAC.
o 4 relays with changeover contact 8A 250VAC.
o 1 static output.
 Integrated RS-485 isolated interface.
 3 expansion slots for EXP series modules.
 Storage of last 250 events.
 Real Time Clock.
 IP40 front protection expandable to IP65 by means of optional gasket.
 Compatible with App SAM1, Lovato NFC configurator, supervision software Synergy and setup and remote control software Xpress.
Front button functions
OFF button - Selects OFF operating mode.
AUT button - Selects automatic operating mode.
MAN button - Selects manual operating mode.
TEST button - Select test operating mode.
<< and >> buttons - Breaker selection for manual control.
OPEN and CLOSE buttons - Manual controls of breakers.
▲▼◄ ►buttons -For scrolling the display and selecting menu options.
button - Recall the main menu and confirm a selection.
Front LEDs
OFF-MAN-AUT-TEST mode LEDS (yellow) - indicate the selected mode.
Alarm LED (red) - Blinking, indicates that an alarm is active.
LINE1 voltage present LED (green) - Indicates that the SRC1 line voltage is within the set limits.
LINE2 voltage present LED (green) - Indicates that the SRC2 line voltage is within the set limits
LINE3 voltage present LED (green) - Indicates that the SRC3 line voltage is within the set limits

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BRK1 switch state LED (yellow) - When fixed, indicates the open or closed state of line breaker 1 (BRK1). When blinking, indicates incoherence between required state of the
breaker and real state detected by the feedback signal.
BRK2 switch state LED (yellow) - When fixed, indicates the open or closed state of line breaker 2 (BRK2). When blinking, indicates incoherence between required state of the
breaker and real state detected by the feedback signal.
BRK3 switch state LED (yellow) - When fixed, indicates the open or closed state of line breaker 3 (BRK3). When blinking, indicates incoherence between required state of the
breaker and real state detected by the feedback signal.
Operating modes
OFF mode - The equipment is off and no actions are performed in this mode. All measurement and state LED displays remain active. If the transfer device control is of the pulse
type, both open/close controls remains deactivated in OFF mode. In continuous control mode, instead, the behaviour may be selected by means of P07.n.06. Set to OFF mode
before accessing the programming menus. Press the OFF-RESET button to reset the retaining alarms providing the conditions which generated the alarm have been removed.
MAN (manual) mode - The breakers can be controlled manually in manual mode. The breaker to be controlled can be selected on the display by pressing buttons << and >>. The
selected breaker appears surrounded by a blinking box. Press the OPEN and CLOSE buttons to change the selected breaker state.
If the closing of a breaker is manually controlled while one other breaker is still closed, the equipment will not allow the simultaneous closing.
When working with gensets, the starting and stopping of the genset can be manually controlled in the manner similar to that of the breakers. In this case, the MAN button must be
held pressed to start and stop the genset. The genset corresponding to the breaker highlighted by the blinking box will be started.
AUT (Automatic) mode - In automatic mode, the equipment autonomously carries out the opening and closing operations of the breakers and to start and stop any gensets. When
the priority line is out of limits for a time higher than the set delay (green line presence LED off), the device disconnects the load from the priority line and connects to the
immediately next priority line, starting of the genset (if applicable) and managing the operation and interlock times. The equipment can be programmed to open the priority line
breaker either before or after the alternative line is made available .
When the priority line return within the limits, the device switches the load back onto it and runs the genset cooling cycle, if needed. The automatic return to priority lines can be
locked. If possible and necessary, the load can be transferred with closed transition, i.e. with the two power sources momentarily in parallel. There are very many automatic
operating cycles which vary according to the defined system configuration (14 possibilities) and according to the type of transfer devices used (motorised breakers, motorised
changeover switches or contactors). Refer to the possible system configurations and the respective truth tables which describe the system behaviour in automatic mode.
Note: The use of closed transition function is not compatible with compliance with IEC / EN 60947-6-1.
TEST mode - In test mode, the equipment starts the gensets, if present, to test their operation. If the TEST button is held pressed for 5 seconds, the equipment will run a cycle
which simulates loss of the priority line anticipated by a notification message with consequent load transfer. Caution: this will momentarily interrupt power supply to the load. Lack
of the secondary line is then simulated with the further transfer to the third line, if present. Two minutes later, the cycle will go back to the secondary line and finally to the main line
in sequence. During this cycle, the message SIMUL appears on the display with a countdown to indicate TEST progress. The simulation cycle may be started on the command
menu.
Energising the equipment
 ATL900 has two power supplies: 100-240VAC or 12-24-48VDC. Priority is given to the AC power if both are present at the same time.
 The equipment is normally set to the OFF mode when it is switched on. Modify parameter P01.03 in the M01 Utility menu if the operating mode selected before switch-off must
be maintained.
 If may be powered at 12 or at 48VDC but the battery voltage must be set correctly in the M04 battery menu otherwise a battery voltage alarm will be generated.
 All LEDs blink during the energising procedure to check operation.
Main menu
 The main menu consists of a set of graphic icons which allow rapid access to measurements and settings.
 Press button starting from the normal measurement view. The rapid menu appears on the display.
 Press ◄or ►to turn clockwise/anticlockwise and select the required function. The selected icon is highlighted and the message in the middle of the display indicates the
description of the function.
 Press to activate the selected function.
 If some functions are not available, the corresponding icon will be deactivated, i.e. will greyed out.
 etc. - Operate as short cuts which allow to speed up access to pages for displaying measurements, going directly to the selected measurement unit, from which it is
possible to move forwards and backwards are usual.
 - Setting the numeric code which allows to access protected functions (setting parameters, executing controls).
 - Parameter programming access point. See the dedicated chapter.
 - Control menu access point, where authorised users can perform a number of resetting and restoring operations.
 - Access point to statistic operating data supplied by the controller.
 - Access point to the events list.
Control thresholds
StatisticsEvents log
Battery state
Input/output state
Information page
Setup parameters
Control menu
Password entry Synoptic Voltages
Currents
Powers
Alarms

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Password protected access
 The password is used to enable or block access to the setting menu and the command menu.
 The password is deactivated and access is free on new equipment (default). If the passwords are enabled, they must be entered to access the equipment (the passwords are
numeric).
 See M03 Password setting menu for how to enable and define passwords.
 There are two access levels, according to the entered code:
 User level access – it’s allowed to reset the programmable counters, limits and changing the parameters of the menu Utilities - M01.
 Advanced level access - the same rights as the user, with the addition of being able to edit all settings.
 In the normal measurements display, press to recall the main menu, then select the password icon and press .
 The password setting window shown in the figure will appear:
 Press ▲and ▼to change the value of the selected digit.
 Press ◄and ►to go from one digit to the next.
 Enter all the digits of the password and then go to the key icon.
 The respective unlock message will appear when the entered password corresponds to the User level password or to the Advanced level password.
 After having unlocked the password, access will remain enabled until:
o the equipment is switched off.
o the equipment is reset (after closing the settings menu).
o two minutes elapse without the operator touching any button.
 Press to close password setting and exit.
Navigating the display pages
 The ▲and ▼buttons allow the measurement display pages to be scrolled one at a time. The current page is shown on the title bar.
 Some measurements may not be viewed according to the programming and connection of the equipment (e.g. the respective page will not appear if no fuel level sensor is set).
 Some pages have sub-pages which can be accessed by pressing ►(e.g. to view voltages and currents in form of graphic bars).
 The user can specify the page and sub-page to return to automatically after no buttons have been pressed for a given time.
 The system can be programmed so that the view always remains in the position in which is was left.
 See menu M01 - Utility for how to set these functions.
Synoptic
 Normally, the main display page shows a synoptic of the system, whose configuration (layout) has been defined by parameter P02.01.
 In the synoptic will find all the most important information, which in combination with the state of the LEDs allow to have a full picture of the supply lines.
 The following is an example of a mimic diagram on the display, with the explanation of the meaning of the various symbols.
Priority level of the
source line (I = line with
highest priority)
Icon that identifies the
source line as a mains line
Description of the system
(programmable through
parameter P01.10)
Source line name
(programmable through
parameter P06.n.01) Icon that identifies the
source line as a
generator
Average voltage of the
phases of the source
line.
Icon that signal the start
request for the
generator
Status and name of the
line breakers.
Status and name of the
tie breakers. Present operating
mode and status of the
transfer cycle.
Icon that represents the
user load. In case of
non-priority load, the
wording NPL is shown.
Voltage line unit of
measure.
Can be V or kV.

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Display pages table
PAGES EXEMPLE PAGES EXEMPLE
Phase to
phase
voltage
Phase
voltage
A
larm status
Control
thresholds
Statistics Events list
Battery status Expansion
modules
Inputs and
outputs
status
Inputs
Outputs Date / Time
System info
A
utomatic
test

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Expandability
 With its expansion bus, the ATL900 can be expanded with the additional modules of the EXP…. series.
 Up to three EXP… modules can be installed at the same time.
 The EXP… modules supported by the ATL900 are divided into the following categories:
o communication modules
o digital I/O modules
o analog I/O modules
 To add an expansion module:
o remove power from the ATL900.
o remove one or more protective covers from the expansion slots.
o insert the upper hook of the module in the specific slot to the left of the expansion slot.
o turn the module rightwards inserting the bus connector.
o press until the specific clip on the lower side of the module couples by snapping.
 Unless otherwise indicated, the insertion order of the modules is free.
 Fit the specific module lock accessory included in the package to improve expansion module fixing safety in applications subjected to strong vibrations.
 To fit this accessory:
o remove the two right screws with a Torx T7 screwdriver
o position the jumper over the previously coupled modules
o fasten the screws back in their original seat.
 The ATL900 automatically recognises the EXP connected to it when it is powered.
 If the system configuration is different from the one last detected (a module was added or removed), the basic unit will ask the user to confirm the new configuration.
If confirmed, the new configuration will be saved and become effective. Otherwise, the discrepancy will be indicated each time the equipment is powered up
 The current configuration of the system is shown on the specific display page (expansion modules), indicating the number, type and state of the connected modules.
 The I/O numbering is listed under each module.
 The I/O and communication channel state (on/off) is shown in negative print.
Additional resources
 The expansion modules provide additional resources which can be exploited by means of the respective setting menus.
 The setting menus of the expansion units are available also if the modules are not physically present.
 Since several modules of the same can be added (e.g. two communication interfaces), there are multiple setting menus all identified by a sequential number.
 The following table shows how many modules of each type can be fitted at the same time and in which slots they can be inserted. The total number of modules must be <= 3.
MODULE TYPE CODE FUNCTION MAX No
COMMUNICATION EXP 10 10 USB 2
EXP 10 11 RS-232 2
EXP 10 12 RS-485 2
EXP 10 13 Ethernet 1
EXP 10 14 Profibus® DP 1
EXP 10 15 GSM - GPRS 1
DIGTAL I/O EXP 10 00 4 INPUTS 2
EXP 10 01 4 STATIC OUTPUTS 2
EXP 10 02 2 INPUTS + 2 STATIC OUTPUTS 2
EXP 10 03 2 SWITCHING RELAYS 2
EXP 10 06 2 NO RELAYS 2
EXP 10 07 3 NO RELAYS 2
EXP 10 08 2 INPUTS + 2 NO RELAYS 2
ANALOG I/O EXP 10 04 2 IN ANALOG V/I/TEMP 3
EXP 10 05 2 OUT ANALOG V/I 3

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Communication channels
 The ATL900 has an integrated RS-485 communication port named COM1.
 Up to two additional communication modules, named COM2 and COM3, can be connected.
 The communication settings menu has three parameter sections (n=1 ... 3) for setting the communication ports.
 The communication channels are completely independently from the hardware point of view (physical interface type) and from the point of view of the communication protocol.
 The communication channels may operate at the same time.
 By activating the Gateway function, it is possible to have an ATL900 equipped with an Ethernet port and the basic RS-485 port which works as a ‘bridge’ towards the other
devices provided with the RS-485 port only, so obtain a saving (one Ethernet access point only). In this network, the ATL900 provided with Ethernet port will have the Gateway
function set to ON for both communication channels (COM1, COM2) while the other devices will be normally configured with Gateway = OFF.
Inputs, outputs, internal variables, counters, analog inputs
 The inputs and outputs are identified by a code and a sequential number. For example, the digital inputs are named INPx, where x is the input number. Similarly, the digital
outputs are named OUTx.
 The input/output numbering is based simply on the assembly position of the expansion modules with a sequential numbering from the top down.
 Up to 6 analog inputs (AINx) can be managed coming for external sensors (temperature measurements, consumption, pressure, flow rate etc.). The value read by the analog
inputs may be converted into any engineering unit shown on the display and made available on the communication bus. The quantities read by the analog inputs are shown on
the specific page. Limit thresholds (LIMx) may be applied to each one, which in turn can be connected to an inner or outer outputs, or inserted in a PLC logical function.
 The expansion I/O numbering starts from the last I/O fitted on the base unit. For example, for digital inputs, INP1…INP12 on the basic unit and thus the first digital input on the
expansion modules will be named INP13. The I/O numbering is shown in the following table:
CODE DESCRIPTION BASIC EXP
INPx Digital inputs 1…12 13…20
OUTx Digital outputs 1…11 12…20
COMx Communication ports 1 2...3
AINx
A
nalog inputs - 1…6
AOUx
A
nalog outputs - 1…6
RALx Remote relays for alarms/states - 1…24
 Like the inputs/outputs, there are internal variables (bit) which may be associated to the outputs or combined. For example, limit thresholds can be applied to the measurements
performed by the system (voltage, current etc.). In this case, the internal variable, named LIMx, will be activated when the measurement is beyond the limits defined by the user
by means of the respective setting menu.
 Furthermore, up to 8 counters (CNT1…CNT8) which can count pulses come from the outside (thus from INPx inputs) or the number of times for which a given condition
occurred. For example, by defining a LIMx threshold as counting source it will be possible to count how many times a measurement exceeds a given value.
 The following table shows all the internal variables managed by the ATL900 with their range (number of variables per type).
CODE DESCRIPTION RANGE
LIMx Limit thresholds on measurements 1…16
REMx Variables controlled remotely 1…16
UAx User alarms 1…8
CNTx Programmable counters 1…8
PLCx PLC logic variables 1…32
TIMx Timer 1…8
Limit thresholds (LIMx)
 The LIMn limit thresholds are internal variables the state of which depends on a measurement of those performed by the system going beyond the limits defined by the user, e.g.
total active power higher than 25kW).
 To speed up setting considering that each threshold can span across an extremely wide range, each threshold can be set to a base value + a multiplying coefficient
(e.g.: 25 x 1k = 25000).
 Two thresholds are available for each LIM (upper than lower). The upper threshold must always be set to a value higher than the lower value.
 The meaning of the thresholds depends on the following functions:
Min function: with the Min function the lower threshold is the tripping threshold and the upper threshold is the resetting threshold. The threshold is activated after the set delay
when the value of the selected measurement is under the lower limit. Reset is activated after the set delay when the value of the measurement is higher than the upper threshold.
Max function: with the Max function the upper threshold is the tripping threshold and the lower threshold is the resetting threshold. The threshold is activated after the set delay
when the value of the selected measurement is higher than the upper limit. Reset is activated after the set delay when the value of the measurement is lower than the lower
threshold.
Min+Max function: with the Min+Max function both the upper and the lower thresholds are intervention thresholds. The threshold is activated after the respective delays when the
value of the selected measurement is either lower than the lower limit or higher than the upper limit. Resetting is immediate as soon as the value returns within the limits.
 Tripping may mean energising or de-energising the LIMn limit according to the setting.
 If the LIMn limit is set with memory, manual resetting is possible using the specific control in the command menu.
 See the M15 settings menu.
Upper threshold
Lower threshold
Measurement type
Limit variable state
Function
Measurement value
Threshold dela
y

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Remote variables (REMx)
 The ATL900 can manage up to 16 variables controlled remotely (REM1…REM16).
 The state of these variables can be edited as required by the user by means of the communication protocol and may be used in combination with outputs, Boolean logic etc.
 Example: a relay using the control software can be freely activated and deactivated by using a remote variable (REMx) as source of an output (OUTx). This would allow to use
ATL900 output relays to control loads, e.g. lighting or other.
 Another use of the REM variables may be to enable or disable given remote functions by inserting them in a Boolean AND logic with inputs or outputs.
User alarms (UAx)
 The user can define up to 8 programmable alarms (UA1…UA8).
 The following can be established for each alarm:
o the source, i.e. the condition which generates the alarm;
o the text of the message which must appear on the display when the condition occurs;
o the properties of the alarm (like for the standard alarms), i.e. so as to interact with the genset control.
 For example, going beyond a threshold may be a condition which generates the alarm. In this case, the source must be one of the LIMx limit thresholds.
 If instead the alarm must be displayed as a consequence of the activation of an external digital input, then the source will be an INPx.
 The same criterion can be used to combine an alarm to complex conditions resulting from the logical Boolean combination of inputs and thresholds, etc. The PLCx variables will
be used in this case.
 The user can defined a freely programmable message which will appear in the alarm pop-up window.
 Properties can be defined for the user alarms using the same method applied for normal alarms. In other words, it is possible to determined whether a given alarm must stop the
motor, sound the siren, close the global alarm output etc. See the Alarm properties chapter.
 Multiple simultaneous alarms will be displayed in sequence and the total number of alarms will be shown.
 Use the specific control in the command menu to reset a programmed alarm with memory.
 See settings menu M21 for alarm definition.
PLC logic (PLCx)
 Xpress can be set using a ladder program for creating a PLC internal logic inside the ATL900, so as to be able to freely create any function necessary for genset accessory
applications.
 In the program logic, all the variables managed internally by the ATL900 can be entered, such as inputs (INPx), threshold limits (LIMx), remote variables (REMx), controller
states (RALx) etc.
 The processing results of the various branches of the ladder logic are stored in internal variables (PLCx), which may later be used to control the ATL900 outputs, or as support
memories to built a more complex logic or to control the alarms defined by the user (UAx).
 It is additionally possible to create timers inside the PLC program using the programmable timers of the M17 menu.
 The operation of the logic created with the ladder program may be checked in real time and possible corrected by means of the specific Xpress software window.
Timers (TIMx)
 The system includes 8 timer variables, named TIM1..TIM8.
 These variables may be used either in the PLC ladder logic or in combination with the OUTn outputs or in combination with UAn user alarms.
 Each timer variable has an input which controls it (e.g. a LIMn limit or an INPn inputs etc.). The state of this variable changes from false to true (ramp up) and the timing variable
also changes from false to true but only remains true for the specified time and then returns false.
 Whenever the input variable becomes false, the TIMn variable also becomes false (this also occurs before the end of the programmed time) and the time counter is reset to
zero.
Automatic test
 The automatic test is a periodical test which is run at fixed deadlines (frequency programmed during setup) if the system is in AUT mode and the function is enabled. The test
consists in starting the gensets to check their efficiency.
 It is possible to decide which days of the week and what time of the day (hours-minutes) to run the test.
 See menu M11 Automatic Test for more information on programming.
 If there are multiple gensets in the system, only one is started for each automatic test. The others will be started in sequence the next time.
 After starting, the genset works for a programmable time after which it stops. The message T.AUT appears on the display before starting.
 The test can be enabled or disabled for each single genset using the parameters of menu M11 and on the Automatic Test display page without needing to open the setup menu.
o On the Automatic Test page, press ◄and ►at the same time.
o Select the required genset by pressing ▲and ▼. Enable the test with ►and disable it with ◄.
o Save and exit the setting.
Keypad lock
The keypad of the ATL900 can be locked by means of:
o a programmable digital input.
o a particular front button procedure.
o Synergy-Xpress.
 The message ACCESS LOCKED will appear when attempting to use the locked buttons.
 Press ▲and hold it pressed to lock or unlock the keypad. Press ▼three times without releasing it at the end.
 Then release ▲and press it five more times. Then release both buttons.
 The message KEYPAD LOCKED will appear on the display when the keypad is locked. The message KEYPAD UNLOCKED will appear when it is unlocked, instead.

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IR programming port
 The ATL900 parameters may be configured by means of the front optical port using the IR-USB CX01 programming dongle or the IR-WiFi CX02 dongle.
 Simply approach a CX.. dongle to the front port and insert the plugs in the specific holds to obtain the mutual recognition of the devices as indicated by the green LINK LEDs on
the programming dongle.
CX01 USB Dongle and CX02 WiFi Dongle
Parameter setting from PC
 The configuration and remote monitoring software Xpress can be used to transfer the set-up parameters (previously set) from ATL900 to the PC hard disk and vice versa.
 Parameter transfer from PC to ATL may be partial, i.e. only the parameters of the specified menus.
Parameter setting from smartphone or tablet with CX02
 It is possible to connect to the ATL900 by means of the app SAM1, available for tablet and Android or iOS smartphones, and the CX02 accessory.
 The app can be used to view alarms, send controls, read measurements, set parameters, download events and sent collected data via e-mail.
Parameter setting from smartphone or tablet via NFC
 Using the app Lovato electric NFC Configurator, available for Android-based smart devices (Smartphones or tablets), you can access the programming parameters in a simple
and innovative way, which does not need any connection cable and is able to operate even with non-powered ATL900.
 You can transfer the programming parameters by simply placing a smart device on the front of the ATL900.
 Operation conditions:
o The smart device must support the NFC function and have it enabled. The smart device must be unlocked (Active).
o If ATL900 is powered, it must be in the OFF mode (automatic operation inhibited).
o If an advanced password is set (see P03.03), this must be known, otherwise the access to parameters will not be possible.
o We recommend to have the APP already installed on the smart device. Otherwise you can still continue to the next step and you
will be automatically led to the installation site on the online store.
o By placing the smart device in contact with the front panel of the ATL900, roughly in the position indicated by the picture on the
side and holding it in place for a few seconds, you will hear a beep. The APP will automatically start and the parameters will be
loaded and displayed.
o Access to parameter menus and their editing is done in the same way as for the other APPs seen previously.
o After having applied the desired changes, press the Send key and place again the smart device in contact with the front panel of
ATL900. The parameters will be transferred and implemented after ATL900 re-initialization. This is shown by the NFC logo on
ATL900 display.

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Parameter settings (setup) from front panel
 To access the parameter programming menu (setup):
o Set the board to OFF mode
o On the normal measurement display, press ▲and ▼at the same time to recall the main menu
o Select the icon . If it is not enabled (greyed out) it means that the password must be entered to unlock it (see Password protected access).
o Press to access the setup menu.
 The figure shows the setup sub-menus in which all the parameters are grouped according to their function.
 Press ▲or ▼to select the required menu and press to confirm.
 Press OFF to exit and go back to the measurements display.
Set-up: menu selection
 The available sub-menus are shown in the following table:
Code MENU DESCRIPTION
M01 UTILITIES Language, brightness, display pages etc.
M02 GENERAL Characteristic system data
M03 PASSWORD
A
ccess code setup
M04 BATTERY Battery parameters
M05
A
COUSTIC ALARMS Control of internal buzzer and external siren
M06 SOURCE LINES (SRCx) Characteristic source data
M07 BREAKERS (BRKn) Characteristic breaker data
M08 SWITCH Load transfer mode
M09 SOURCE LINE CONTROL (SLCx) Source line acceptability limits n.
M10 COMMUNICATIONS Communication parameters ()
M11
A
UTOMATIC TEST Period, time, automatic test mode
M12 DIGITAL INPUTS Programmable digital input functions
M13 DIGITAL OUTPUTS Programmable digital output functions
M14 MISCELLANEOUS Functions, such as maintenance etc.
M15 LIMIT THRESHOLDS Programmable limit thresholds
M16 COUNTERS Programmable generic counters
M17 TIMERS Programmable timers for PLC logic
M18 REMOTE ALARMS
A
larm remoting on RGKRR module
M19
A
NALOG INPUTS Voltage/current/temperature inputs
M20
A
NALOG OUTPUTS Voltage/current outputs
M21 USER ALARMS Programmable alarms
M22
A
LARMS TABLE
A
larm enabling and effect
 Select the sub-menu and press to view the parameters.
 All parameters are shown with code, description, current value.
Set-up: parameter selection

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Parameter table
M01 - UTILITIES Unit Default Range
P01.01Language
English English
Italiano
Francais
Espanol
Deutsch
Portuguese
Polish
Russian
P01.02Clock setting after power-on
OFF OFF-ON
P01.03Power-on operative mode
Previous OFF mode
Previous
P01.04LCD contrast %
50 0-100
P01.05Display backlighting intensity high %
100 0-100
P01.06Display backlighting intensity low %
25 0-50
P01.07Low backlighting switch time sec
180 5-600
P01.08Back to default page
sec 300 OFF / 10-600
P01.09Default page
CONFIGURATION (page list)
P01.10Main page title
TRANSFER SWITCH 20 char. string
These parameters are also accessible with user level password.
P01.01 - Language selection for text on display.
P01.02 - Automatic access activation to clock setup after energising.
P01.03 -When energised, the equipment starts in OFF mode in the mode which was selected when the equipment was switched off.
P01.04 - LCD contrast adjustment.
P01.05 - High display backlighting adjustment.
P01.05 - Low display backlighting adjustment.
P01.07 - Low display backlighting switch delay.
P01.08 -Reset to default page delay when buttons are not pressed. If set to OFF the last manually selected page will always remain on the display.
P01.09 - Default page shown on the display when it is switched on and after the delay.
P01.10 - Free text with alphanumeric name identifying the specific system.
M02 - GENERAL Unit Default Range
P02.01 System layout E 3S - 0T
A
: 2S
–
0T
B: 2S – 1T – PL
C: 2S – 1T - SI
D: 2S – 1T – AI
E : 3S – 0T
F: 3S – 1T – PL
G: 3S – 1T – AI
H: 3S – 1T – PS
I: 3S -1T - RI
J: 3S – 1T - 12
K: 3S – 2T – M2
L: 3S – 2T - FL
M: 3S – 2T – 3N
N: 3S – 2T – 2L
O: (custom)
P02.02 Rated system voltage V 400 50
–
50000
P02.03 VT Use OFF OFF-ON
P02.04 VT Primary V 100 50-50000
P02.05 VT Secondary V 100 50-500
P02.06 Phase sequence chec
k
OFF OFF
L1-L2-L3
L3-L2-L1
P02.07 Connection type L1-L2-L3-N L1-L2-L3-N
L1-L2-L3
L1-N-L2
L1-N
P02.08 Rated control type L-L L-L
L-N
L-L + L-N
P02.09 Rated frequency Hz 50Hz 50 Hz
60 Hz
P02.10 CT position OFF OFF
LOAD
S1
S2
S3
P02.11 CT No. 1-2-3 primary
A
5 1-10000
P02.12 CT No. 1-2-3 secondary
A
5 1-5
P02.13 CT No. 4 primary
A
5 1-10000
P02.14 CT No. 4 secondary
A
5 1-5
P02.15 CT No. 4 current reading OFF OFF
Neutral

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P02.16 Non-priority load management OFF OFF
Pulse breaker
Continuous breaker
Contactor
P02.17 Breaker operation max. time non-priority load sec 5 1…900
P02.18 Open pulse time sec 10 0-600
P02.19 Close pulse time sec 1 0-600
P02.20 Minimum coil opening pulse time sec 1.0 0.1 … 10.0
P02.21 Delay between min. coils and spring load sec 0.2 0.1 … 10.0
P02.22 Tie breaker management (TBx) OFF OFF
Pulse breaker
Continuous breaker
Contactor
P02.23 Maximum tie breaker operation time sec 5 1…900
P02.24 Open pulse time sec 10 0-600
P02.25 Close pulse time sec 1 0-600
P02.26 Minimum coil opening pulse time sec 1.0 0.1 … 10.0
P02.27 Delay between min. coils and spring load sec 0.2 0.1 … 10.0
P02.28 Description of tie breaker 1 TB1 (char*4)
P02.29 Description of tie breaker 2 TB2 (char*4)
P02.30 Tie breaker closing delay sec 5.0 0.1 … 60.0
P02.31 Pre-transfer time load 1 sec OFF OFF / 1-1000
P02.32 Post-transfer time load 1 sec OFF OFF / 1-1000
P02.33 Pre-transfer time load 2 sec OFF OFF / 1-1000
P02.34 Post-transfer time load 2 sec OFF OFF / 1-1000
P02.35 Pre-transfer time load 3 sec OFF OFF / 1-1000
P02.36 Post-transfer time load 3 sec OFF OFF / 1-1000
P02.37 Tie breaker TB1 continuous control in RESET/OFF mode NOC OFF
NOC
P02.38 Tie breaker TB2 continuous control in RESET/OFF mode NOC OFF
NOC
P02.39 Tie breaker TB1 conditional enable OFF OFF
INPx
OUTx
LIMx
REMx
PLCx
Ax
UAx
P02.40 Function index (x) OFF OFF / 1…99
P02.41 Tie breaker TB2 conditional enable OFF OFF
INPx
OUTx
LIMx
REMx
PLCx
Ax
UAx
P02.42 Function index (x) OFF OFF / 1…99
P02.01 - System layout, description of the various configurations with respective logical diagrams is shown in this manual in the system layout section at the end of
the parameter description section:
P02.02 -Rated system voltage. Set the concatenated voltage for polyphase systems.
P02.03 - Use voltage transformers (VT) on the voltage measuring inputs.
P02.04 -Primary value of any voltage transformers.
P02.05 - Secondary value of any voltage transformers.
P02.06 - Phase sequence control enabling. OFF = no control. Direct = L1-L2-L3. Inverted = L3-L2-L1. Note: The corresponding alarms must also be enabled.
P02.07 -Connection type choice, three-phase with/without neutral, two-phase or single-phase.
P02.08 - Voltage controls on concatenated voltages, phase voltages or both.
P02.09 - Rated system frequency.
P02.10 - CT positioning for reading currents and powers. OFF = CT not used. LOAD = CT positioned on load. S1,S2,S3 = CT positioned on specified source line.
P02.11 - P02.12 - Primary and secondary of CT triad used for all three phases.
P02.13 - P02.14 - Primary and secondary of fourth CT used for neutral.
P02.16 - Defines whether to manage non-priority load management (for system layouts which does not require it specifically). In addition to enabling management, it
defines the control type for the breaker which controls it.
P02.17 - Timeout between sending of a control to the non-priority load breaker and the actual execution of the operation. After having sent an opening or closing
control to the breaker, alarm A31 is generated if it is not positioned correctly within the timeout. It works when the auxiliary state contacts of the breaker is
programmed and wired.
P02.18 - Minimum opening control time. For applications with motorised breakers, this must be set to a sufficient time to allow complete charging of the springs. This
time is considered also when working in continuous control mode.
P02.19 - Closing control pulse time.
P02.20 - Minimum coil deactivation pulse for breaker opening pulse.
P02.21 - Time elapsed between minimum voltage opening pulse and breaker spring loading control.
P02.22 - This defines the control type for tie breakers (TBx). If the system layout includes tie breakers, this parameter must be set to a value other than OFF.
P02.23-P02.24-P02.25-P02.26-P02.27 - Control parameters of breakers used as tie breakers. Similar to P02.17…P02.21
P02.28-P02.29 - Alphanumeric description (code) which will be displayed on the synoptic panels on the display to indicate the two tie breakers (where used),
respectively.
P02.30 - Tie breaker closing delay after closing the corresponding line breakers.
P02.31 - P02.33 - P02.35 - Advance time between energising of pre-transfer output and the actual de-energising of the respective load. This controls the outputs
programmed with the pre-transfer function.

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P02.32-P02.34-P02.36 - Post-transfer output energising time after conclusion of the load transfer from one line to the other.
P02.37-P02.38 – When the breaker command mode is set to Continuous (P08.01 = Continuous control brk), this parameter defines the ATL behaviour when moving
to OFF mode. OFF = Command relays are de-energized. NOC = Command relays hold their previous status (NO Change).
P02.39, P02.40 – Conditional enable of TB1 tie breaker. OFF = Tie breaker is enabled normally. (Any other setting) = TB1 tie breaker is enabled only if the
selected variable is active. When the variable is not active, if the tie breaker is open, its closing will be avoided. If the tie breaker is closed, it will be
opened.
P02.41, P02.42 – Like previous parameters, referred to TB2.
M03 - PASSWORD Unit Default Range
P03.01 Enable password OFF OFF-ON
P03.02 User level password 1000 0-9999
P03.03
A
dvanced level password 2000 0-9999
P03.04 Remote access password OFF OFF/1-9999
P03.01 - If set to OFF, password management is deactivated; access to settings and the command menu is free.
P03.02 - With P03.01 active, value to be specified to activate user level access. See Password Access section.
P03.03 - As P03.02, referred to Advanced level access.
P03.04 - If set to a numeric value, it comes the code to be specified via serial line before being able to send remote controls.
M04 - BATTERY Unit Default Range
P04.01 Rated battery voltage V
A
UTO
A
UTO
12
24
48
OFF
P04.02 MAX voltage limit % 130 110-140
P04.03 MIN voltage limit % 75 60-130
P04.04 MIN/MAX voltage delay sec 10 0-120
P04.05 Local battery charger communication OFF OFF / 01…255
P04.06 Genset battery charger 1 communication OFF OFF / 01…255
P04.07 Genset battery charger 2 communication OFF OFF / 01…255
P04.08 Genset battery charger 3 communication OFF OFF / 01…255
P04.01 - Rated battery voltage. If set to OFF, disables the battery state alarms and messages on the display.
P04.02 - MAX battery voltage alarm tripping threshold.
P04.03 - MIN battery voltage alarm tripping threshold.
P04.04 - Tripping delay between MIN and MAX battery alarms.
P04.05-P04.06-P04.07-P04.08 - Serial communication enabling between ATL900 and any BCG…RS series communicating battery chargers. It allows to read the
voltages, charging currents and alarms concerning the corresponding battery charger and to view information on the dedicated video page. ‘Local’ means
the battery charger connected to the battery which powers the ATL900 in DC.
M05 - ACOUSTIC ALARMS Unit Default Range
P05.01 Siren sound mode on alarm Timed OFF
Keypad
Timed
Repeated
P05.02 Sound activation time on alarm sec 30 OFF/1-600
P05.03 Sound activation time before starting sec OFF OFF / 1-60
P05.04 Sound activation time on remote control start sec OFF OFF / 1-60
P05.05 Sound activation time for no line SRC1 sec OFF OFF / 1-60
P05.06 Sound activation time for no line SRC2 sec OFF OFF / 1-60
P05.07 Sound activation time for no line SRC3 sec OFF OFF / 1-60
P05.08
A
coustic indication device BUZZER+SIREN OFF
SIREN
BUZZER
BUZZER+SIR
P05.09 Buzzer on key press sec 0.15 OFF /
0.01-0.50
P05.01 - OFF = siren deactivated. Keypad = Siren sounds continuously until it is cancelled by pressing a button on the front panel. Timed = Sounds for the time
specified in P06.02. Repeated = Sounds for the time in P06.02, pause for a triple time, and then repeats cyclically.
P05.02 - Acoustic signal activation time on alarm.
P05.03 - Acoustic signal activation time before any starting of the engine.
P05.04 - Acoustic signal activation time following activation of a remote control via communication channel.
P05.05 - P05.06 - P05.07 - Acoustic signal activation time following lack of power on SRC1/2/3 line.
P05.08 - Acoustic signalling device choice.
P05.09 - Buzzer activation and time following button pressing.

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M06 - SOURCE LINES
(SRCx, n=1…3)
Unit Default Range
P06.n.01 Source description SRCx (char*6)
P06.n.02 Signal priority n 1
–
3
P06.n.03 SRCx source type Mains Mains
Genset
P06.n.04 Genset cooling time sec 120 1-3600
P06.n.05 Rated source power kW 1000 1-100000
P06.n.06 Max. power use limit % OFF OFF / 1-200
P06.n.07 Max. power use delay sec 60 1 - 9999
P06.n.08 Power use return limit % OFF OFF / 1-200
P06.n.09 Power use return delay sec 60 1 - 9999
P06.n.10 Power use max. limit for non-priority load disconnection % OFF OFF / 1-200
P06.n.11 Power use max. delay for non-priority load disconnection sec 60 1 - 9999
P06.n.12 Power use return limit for non-priority load connection % OFF OFF / 1-200
P06.n.13 Power use return delay for non-priority load connection sec 60 1 - 9999
Note: This menu is divided into 3 sections for source lines SRC1..3.
P06.n.01 - Alphanumeric description on the respective power source line which will be shown on the display synoptic panel.
P06.n.02 - Power line priority. In case of simultaneous presence of multiple power lines on the same load, the one with priority 1 is connected. If the line with priority
1 is not present, the one with priority 2 is used etc. If two sources are programmed with the same priority, the software attribute higher priority to the one
most on the left.
P06.n.03 - This defines the type of power source of the SRCx line. Mains = The mains symbols is shown on the synoptic panel. Genset = The genset symbol is
shown and the start/stop outputs are managed; is sought.
P06.n.04 - Maximum cooling cycle time. Example: time which elapses between the load disconnection of the genset and the actual stopping of the engine.
P06.n.05 - Max. rated power available on the SRCx source.
P06.n.06 - Max. power limit (in percentage) which can be taken from the SRCx line. If this limit is exceeded by the load, the load is transferred onto another source
line.
P06.n.07 - Delay referred to the previous parameter.
P06.n.08 - Power value (in percentage) which defines the hysteresis with respect to P06.n.06 for the load return to SRCx.
P06.n.09 - Delay referred to the previous parameter.
P06.n.10 - P06.n.11 - P06.n.12 - P06.n.13 - Thresholds and delays which define the power levels for connecting and disconnecting the non-priority load.
M07 - BREAKERS
(BRKn, n=1…3)
Unit Default Range
P07.n.01 Breaker description BRKn (char*6)
P07.n.02 Interlock time SRCx … sec 6.0 0.1…1800.0
P07.n.03 Breaker operation max. time (alarm delay A03 and A04) sec 5 1…900
P07.n.04 Open pulse time sec 10 0-600
P07.n.05 Close pulse time sec 1 0-600
P07.n.06 Continuous control in RESET/OFF mode NOC OFF
NOC
P07.n.07 Breaker following no closing (with feedback open only) OFF OFF
ON
P07.n.08 Minimum coil opening pulse time sec 1.0 0.1 … 10.0
P07.n.09 Delay between min. coils and spring load sec 0.2 0.1 … 10.0
P07.n.10 Closing retry
A
UT OFF
AUT
AUT+MAN
CLOSING
P07.n.11 Breaker conditional enable OFF OFF
INPx
OUTx
LIMx
REMx
PLCx
Ax
UAx
P07.n.12 Function index (x) OFF OFF / 1…99
Note: This menu is divided into 3 sections for controlling the source line breakers BRK1..3.
P07.n.01 - Alphanumeric description which identifies the line breaker on the display synoptic panel.
P07.n.02 - Interlock time from the opening instant of the breaker BRKn to the closing of another breaker.
P07.n.03 - Timeout between sending of a control from a line breaker and the actual execution of the operation. After having sent an opening or closing control to
the breaker, alarms A03 or A04 are generated if it is not positioned correctly before the timeout. It works when the auxiliary state contacts of the
breakers is programmed and wired.
P07.n.04 - Minimum opening control time, when the breaker control is defined by means of a pulse (P08.01 = Pulse breaker). For applications with motorised line
breakers, this must be set to a sufficient time to allow complete charging of the springs. This time is considered also when working in continuous control
mode.
P07.n.05 - Closing control pulse time.
P07.n.06 – Otherwise, the breaker control is selected as continuous (P08.01 = Continuous breaker), defines the behaviour of the board when it switches to the OFF
operating mode. OFF = The control relays are de-energised. NOC = The control relays remain in in their original state (No Change).
P07.n.07 - In case of timeout caused by the line breaker BRKn failing to close (open feedback contact) causes the transfer of the load on an alternative line.
P07.n.08 - Minimum coil deactivation pulse duration for breaker opening pulse.
P07.n.09 - Time elapsed between minimum voltage opening pulse and breaker spring loading control.
P07.n.10 - This defines whether in case of failure to close the ATL900 must perform a retry consisting of a cycle of opening/spring recharging cycles followed by a
new closing attempt. The failed closing alarm will be generated if the second attempt also fails. OFF = Closing is not retryed.
AUT = Retry is manual only. AUT+MAN = Retry enabled in both modes. CLOSING = Closing retry is executed in AUT or MAN only in case of failed closing
but not when breaker opens unexpectedly.
P07.n.11, P07.n.12- Conditional enable of breaker. OFF = Breaker is enabled normally. (Any other setting) = The breaker is enabled only if the selected variable
is active. When the variable is not active, if the breaker is open, its closing will be avoided. If the breaker is closed, it will be opened.

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M08 - SWITCH Unit Default Range
P08.01 Transfer device type Pulse control breakers Pulse control brk.
Continuous control brk.
Contactor
P08.02 Transfer strategy OBP OBP
OAP
P08.03 Maximum load not powered time
(alarm A09 tripping delay)
sec 60 OFF / 1…3600
P08.04
A
utomatic return on priority line inhibition OFF OFF / ON
P08.05 Genset start delay sec OFF OFF / 1-6000
P08.06 Genset rotation interval OFF OFF
1h-2h-3h-
4h-6h-8h-
12h-
1d-2d-3d
4d-5d-6d-7d
P08.07 Genset rotation time h 0 0...23/OFF
P08.08 Genset rotation minutes min 0 0...59
P08.09 Distance between genset startups sec 15 0-9999
P08.10 EJP operating mode Normal Normal
EJP
EJP-T
SCR
P08.11 EJP start delay min 25 0-240
P08.12 EJP switch delay min 5 0-240
P08.13 EJP re-switch block ON OFF / ON
P08.14 Closed transition enable OFF OFF
ON
OFF-SYNC
P08.15 Max. V delta % 5 0 - 25
P08.16 Max. Hz delta Hz 0.5 0.0 - 10.0
P08.17 Max. Phi delta ° 5.0 0.0 - 10.0
P08.18 Synchronisation dwell time sec 0.50 0.00 - 10.00
P08.19 Max. synchronisation time sec 60 0 - 1000
P08.20 Instantaneous parallel time sec 0.25 0.01
–
5.00
P08.21 Increase-decrease voltage/frequency pulse ON time sec 0.5 0.1-10.0
P08.22 Increase-decrease voltage/frequency pulse OFF time sec 1.0 OFF / 0.1-10.0
P08.01 - This defines the transfer device type for power lines valid for all breakers BRKn defined in menu M07. Pulse breake
r
= Motorised breakers with pulse
control. Continuous breaker = motorised breakers with continuous control. Contactor = Contactor coil control.
P08.02 - This defines the transfer strategy. OBP = (Open Before Presence) this means that in automatic mode the opening control of a switch is generated when the
line is beyond the limits regardless of the alternative line state. OAP = (Open After Presence) this means that in automatic mode the opening control of a
breaker is only sent after an alternative line is present in the limits.
P08.03 - If in automatic mode all the sources are simultaneously non available for longer than this time alarm A09 load timeout not powered.
P08.04 - If this parameter is enabled after a transfer to an alternative line the return on the priority line does not occur automatically when it is re-established but
must be controlled in manual mode. OFF = Automatic return ON = Return to manual.
P08.05 - Motor start-up delay when the priority line is not within the set limits. If it is set to OFF, the starting cycle starts at the same time as the opening of the
priority line breaker.
P08.06 - P08.07 - P08.08 - These parameters allow a timed rotation in the application with multiple gensets exchanging the priority between the gensets. P08.06
defines the rotation interval between the gensets. The day of the day at which the rotation will occur is defined by P08.07 and P08.08. If the rotation range
is higher than 24h, then the rotation always occurs at the indicated time every n days. If it is lower than 24h, then it occurs at the indicated time and in the
sub-multiples. For example, if the time is set to 12:30 with the rotation every 6h, there will be a rotation at 12:30, one at 18:30, one at 0:30 etc.
P08.09 - This defines the time which separates the starting for one unit from the following one. If this time elapses after sending a start control without having
detected the presence of voltage, alarm A2n Line n genset not available is generated and the system starts a second genset, where available.
P08.10 - This defines the EJP operating mode. Normal = Standard opening mode in AUT mode. EJP = Two programmable inputs are used set with Start remote
load off and remote transfer for operation as EJP. When the start input is closed, the motor start delay time (P08.11) is activated at the end of which time
the starting cycle is run. Subsequently, when the transfer enable is received, is the generated started correctly, the load is transferred from the main line to
the genset line. The load goes back to the priority line when the transfer enable opens and the genset runs the start cycle when the start input opens. The
EJP function is enabled only if the system is in automatic mode. The protections and alarms work as usual. EJP-T = The EJP/T function is a simplified
variant of the previous EJP, where the genset start-up is controlled identically, but the load is transferred in timed manner instead of with a specific external
signal. This function thus uses a single digital input, i.e. the starting input. The transfer delay time starts from when the starting control is closed and can be
set by means of parameter P08.12. SCR = The SCR function is very similar to the EJP function. In this mode, the start input enables the genset start up as
EJP, but without waiting for the start delay time P08.11. The remote transfer input has the function of enabling the transfer which occurs after the transfer
delay P08.12.
P08.11 - Delay between arrival of the EJP genset start signal and the actual start signal.
P08.12 - Load switch delay from priority line to secondary line in EJP and SCR mode.
P08.13 - If ON, in EJP mode, EJP-T and SCR the load is not transferred back on the priority line in case of genset failure but only when the signals on the EJP
inputs enable them.
P08.14 - Closed transition enable. This allows to define how the load will be transferred between two power sources, which are both present. OFF = the load will be
transferred with transition open (default). ON = the two sources are synchronised (where possible) or spontaneous synchronisation will be expected within
a limit time. The synchronisation thresholds are defined by parameters P08.15 - P08.16 - P08.17 - P08.18. In presence of all synchronisation conditions
the load will be transferred with closed transition and instantaneous parallel. Obviously, the breakers and external protections must be appropriately
configured in this case. IN-PHASE = In this case, the synchronisation conditions will be sought but transfer will occur in all cases with the transition open.
In this case, the load is passed to a new source the amplitude and phase of which is synchronised with the previous one.
P08.15 - Maximum voltage difference between the two sources to be synchronised expressed as a percentage of the rated voltage.
P08.16 - Maximum frequency difference between the two sources to be synchronised.
P08.17 - Maximum phase angle difference between the two sources to be synchronised.
P08.18 - Minimum simultaneous dwell time between the three previous conditions before the synchronism is considered reliable.
P08.19 - Maximum waiting time for the synchronisation conditions. After this time, an open transition is performed.
P08.20 - Instantaneous parallel time in closed transition.

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P08.21 - P08.22 - These define the ON and OFF time of the pulse controls for increasing or decreasing the voltage or frequency, respectively. These times influence
the programmed outputs with the increase voltage, decrease voltage, increase frequency and decrease frequency functions. The signals are intended to
be sent to a genset control unit with the purpose of reaching synchronisation conditions.
M09 - SOURCE LINE CHECK
(SLC, n=1…3)
Unit Default Range
P09.n.01MIN release voltage limit
% 85 70-100
P09.n.02MIN reset threshold %
90 70-100
P09.n.03MIN voltage delay sec
5 0-600
P09.n.04MAX release voltage limit
% 115 100-130 / OFF
P09.n.05MAX reset threshold %
110 100-130 / OFF
P09.n.06MAX voltage delay sec
5 0-600
P09.n.07Mains return delay in limits (when no alternative line is available)
sec 10 1-6000
P09.n.08Mains return delay in limits (when alternative line is available)
sec 60 1-6000
P09.n.09No phase threshold %
70 60% - 80% / OFF
P09.n.10No phase threshold delay
sec 0.1 0.1s-30s
P09.n.11MAX asymmetric threshold %
15 1% -20%/OFF
P09.n.12MAX asymmetric delay
sec 5 0.1-900
P09.n.13MAX frequency limit %
105 100-120/OFF
P09.n.14MAX frequency delay sec
3 0-600
P09.n.15MIN frequency limit %
95 OFF/80-100
P09.n.16MIN frequency delay sec
5 0-600
P09.n.17SRCn line control in OFF/RESET mode
OFF OFF
ON
OFF+GLOB
ON+GLOB
P09.n.18SRCn line control in MAN mode
OFF OFF
ON
OFF+GLOB
ON+GLOB
P09.n.19 Line conditional enable OFF OFF
INPx
OUTx
LIMx
REMx
PLCx
Ax
UAx
P09.n.20 Function index (x) OFF OFF / 1…99
These parameters are also accessible with user level password.
Note: This menu is divided into 3 sections for Source Line Controls SLC1..3.
P09.n.01, P09.n.02, P09.n.03 - The first two parameters define the minimum voltage threshold and the respective reset hysteresis. P09.n.02 cannot be set to a
value lower than P09.n.01. P09.n.03 this defines the tripping delay time of this protection.
P09.n.04, P09.n.05, P09.n.06 - The first two parameters define the maximum voltage threshold and the respective reset hysteresis. P09.n.05 cannot be set to a
value higher than P09.n.04. By setting P09.n.04 to OFF, the maximum voltage control is disabled. P09.n.06 defines the maximum voltage tripping delay.
P09.n.07 - Delay time for SRCx to return within the limits, used when an alternative threshold is not available. Normally shorter than P09.n.08, because the load is
not powered and supplying voltage is urgent.
P09.n.08 -Delay time for SRCx to return within the limits, used when the load cannot be connected to an alternative line. Normally longer than P09.n.07, because
the load is covered and it is possible to wait for longer before conditions that voltage is stably re-established.
P09.n.09, P09.n.10 - Voltage threshold under which lowering is rapid because of a missing phase. Delay time for the missing phase is specified in P09.n.10.
P09.n.11, P09.n.12 - P09.n.11 These define the maximum imbalance threshold between the phases referred to rated voltage and P09.n.12 is the respective tripping
delay. This control may be disabled by setting P09.n.11 to OFF.
P09.n.13 - Maximum frequency tripping threshold; may be deactivated.
P09.n.14 - Maximum frequency tripping delay.
P09.n.15 -Minimum frequency tripping threshold; may be deactivated.
P09.n.16 - Minimum frequency tripping delay.
P09.n.17 - OFF = voltage control SLCn in OFF mode is deactivated. ON = voltage control in OFF mode is active. OFF+GLOB = voltage control in OFF mode is
deactivated but the relay programmed with the global alarm function may intervene or not according to whether the mains are absent or present,
respectively. ON+GLOB = voltage control in OFF mode is activated but the relay programmed with the global alarm function may intervene or not
according to whether the mains are absent or present, respectively.
P09.n.18 - See P09.n.17 but referred to MANUAL mode.
P09.n.19, P09.n.20 - Conditional enable of the source line. OFF = The source line is normally available. (Any other setting) = The source line can be used only if
the set variable is active.
M10 - COMMUNICATION
COMn (n=1…3)
Unit Default Range
P10.n.01Serial node address
01 01-255
P10.n.02Serial speed
bps
9600 1200
2400
4800
9600
19200
38400
57600
115200
P10.n.03Data format
8 bit - n 8 bit, no parity
8 bit, odd
bit, even

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7 bit, odd
7 bit, even
P10.n.04Stop bit
1 1-2
P10.n.05Protocol
Modbus RTU Modbus RTU
Modbus ASCII
Modbus TCP
P10.n.06IP address
192.168.1.1 000.000.000.000
–
255.255.255.255
P10.n.07Subnet mas
k
0.0.0.0 000.000.000.000
–
255.255.255.255
P10.n.08IP port
1001 0-32000
P10.n.09Channel function
Slave Slave
Gateway
Battery charger
P10.n.10Client / server
Server Client
Server
P10.n.11Remote IP address
000.000.000.000 000.000.000.000
–
255.255.255.255
P10.n.12Remote IP port
1001 0-32000
P10.n.13IP gateway address
000.000.000.000 000.000.000.000
–
255.255.255.255
These parameters are also accessible with user level password.
Note: This menu is divided into 3 sections for communication channels COM1..3.
The channel COM1 identifies the standard RS-485 port, while COM2 and COM3 are reserved to the possible communication ports on expansion modules
EXP. The infrared frontal programming port has fixed communication parameters and no setting menu is required.
P10.n.01 - Serial address (node) of the communication protocol.
P10.n.02 - Communication port transmission speed (1200 bps not available on slot 1 and 4).
P10.n.03 - Data format. 7-bit settings available for ASCII protocol only.
P10.n.04 - Stop bit number.
P10.n.05 - Communication protocol selection.
P10.n.06, P10.n.07, P10.n.08 - TCP-IP coordinates for applications with Ethernet interface. Not used with other communication module types.
P10.n.09 - Port operating mode. Slave = normal operation, the device reply to the messages of an external master. Gateway = The device analyses the message
intended to it (serial address) and forwards those address to other nodes through the RS485 interface. See chapter Communication channels. Mirror = the
communication channel is used to connect a ATL900RD repeater.
P10.n.10 - TCP-IP connection activation. Server = Waits for connection from a remote client. Client = Establishes the connection towards a remote server. This
parameter also conditions the behaviour of the GSM/GPRS modem. If set to client, the modem attempt a PSD connection towards the remote server/port.
P10.n.11 - P10.n.12 - P10.n.13 - Coordinates for connecting the remote server when P10.n.10 is set to client.
M11 - AUTOMATIC TEST Unit Default Range
P11.01
A
utomatic TEST enable group 1 OFF OFF / ON
P11.02
A
utomatic TEST enable group 2 OFF OFF / ON
P11.03
A
utomatic TEST enable group 3 OFF OFF / ON
P11.04Interval between TESTS
gg 7 1-60
P11.05Enable TEST for Monday
ON OFF / ON
P11.06Enable TEST for Tuesday
ON OFF / ON
P11.07Enable TEST for Wednesday
ON OFF / ON
P11.08Enable TEST for Thursday
ON OFF / ON
P11.09Enable TEST for Friday
ON OFF / ON
P11.10Enable TEST for Saturday
ON OFF / ON
P11.11Enable TEST for Sunday
ON OFF / ON
P11.12TEST start hour h
12 00-23
P11.13TEST start minutes min
00 00-59
P11.14TEST time min
10 1-600
P11.15
A
utomatic TEST with load switching OFF OFF
Load
Dummy load
These parameters are also accessible with user level password.
P11.01 - P11.02 - P11.03 - This activate execution of the periodical test of the respective three gensets.
P11.04 - Interval time between one periodical test and the next. If the test is not enabled on the period expiration date, the interval will be extended as a
consequence to the following enabled day.
P11.05…P11.11 This enables automatic test execution in the single days of the week. OFF means that the test will not be performed on that day. Caution: The clock
must be set correctly.
P11.12 - P11.13 This establishes the date and minutes from the beginning of the periodical test. Caution: The clock must be set correctly.
P11.14 - Periodical test time in minutes.
P11.15 – Load management during periodical test execution: OFF = The load is not transferred. Load = This enables load transfer to the genset. Dummy load =
This applies the dummy load while the system load is not switched.
M12– DIGITAL INPUTS
(INPn, n=1…20)
Unit Default Range
P12.n.01 INPn input function (miscellaneous) (see Input functions
table)
P12.n.02 Function index (x) OFF OFF / 1…99
P12.n.03 Contact type NO NO/NC
P12.n.04 Closing delay sec 0.05 0.00-600.00
P12.n.05 Opening delay sec 0.05 0.00-600.00
Note: This menu is divided into 20 sections for each programmable digital input INP1..INP20.
The inputs on the basic board are numbered from INP1 to INP12, while the remaining number refer to the expansion module inputs.
P12.n.01 - Selection input function selection (see programmable input function table).
P12.n.02 - Index possibly associated to the function programmed under the previous parameter. Example: If the input function is set to Control menu execution Cxx

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and this input must execute control C.07 in the command menu, then P12.n.02 is set to value 7.
P12.n.03 - Contact type selection: NO normally open or NC normally closed.
P12.n.04 - Selected input contact closing delay.
P12.n.05 - Selected input contact opening delay.
M13 – DIGITAL OUTPUTS
(OUT1…20)
Unit Default Range
P13.n.01 OUTn output function (miscellaneous) (see Output functions
table)
P13.n.02 Function index (x) 1 OFF / 1…99
P13.n.03 Normal/reverse output NOR NOR / REV
Note: This menu is divided into 20 sections, referred to digital outputs OUT1…OUT20.
The outputs on the basic board are numbered from OUT1..OUT10, while the remaining to the those on the expansion modules.
P13.n.01 – Output function selection (see Programmable output function table).
P13.n.02 - Index possibly associated to the function programmed under the previous parameter. Example: If the function of the output is set to the Alarm Axx function
and this output must be energised when alarm A16 occurs, then P11.n.02 is set to value 16.
P13.n.03 – This sets the output state when the associated function is not active: NOR = de-energised output, REV = energised output.
M14 - MISCELLANEOUS Unit Default Range
P14.01 Maintenance interval hours h OFF OFF / 1…99999
P14.02 Maintenance interval operations OFF OFF
1…99999
P14.03 Operative mode output OFF OFF
O
M
M - O
A
…
P14.01 - This defines the programmed maintenance frequency, expressed in hours. If set to OFF, this maintenance frequency can be deactivated.
P14.02 - This defines the programmed maintenance frequency, expressed in number of operations. If set to OFF, this maintenance frequency can be deactivated.
P14.03 - This defines in which operating modes to activate the output programmed with the Operating mode function. For example, if this parameter is programmed
on M-O, the Operating mode output will be activated when the ATL900si is in MAN or OFF mode.
M15 - LIMIT THRESHOLDS
(LIMn, n = 1…16)
Unit Default Range
P15.n.01 Reference measurement OFF OFF-
(measurements list)
AINx
CNTx
….
P15.n.02 Reference measurement source OFF OFF
SRC1
SRC2
SRC3
P15.n.03 Channel no. (x) 1 OFF/1..99
P15.n.04 Function Max Max
Min
Min+Max
P15.n.05 Upper threshold 0 -9999 - +9999
P15.n.06 Multiplier x1 /100 - x10k
P15.n.07 Delay sec 0 0.0
–
600.0
P15.n.08 Lower threshold 0 -9999 - +9999
P15.n.09 Multiplier x1 /100 - x10k
P15.n.10 Delay sec 0 0.0
–
600.0
P15.n.11 Home state OFF OFF-ON
P15.n.12 Memory OFF OFF-ON
Note: This menu is divided into 16 sections for limit thresholds LIM1..16.
P15.n.01 - This defines which measurements supplied by the ATL900 to apply the limit threshold.
P15.n.02 - If the reference measurement is an electric measurement, this defines whether it refers to the mains or the genset.
P15.n.03 - If the reference measurement is a multichannel internal measurement (e.g. AINx), this defines which channel.
P15.n.04 -This defines the limit threshold operating mode. Max = LIMn active when the measurement is higher than P15.n.03. P15.n.06 is the resetting threshold.
Max = LIMn active when the measurement is lower than P15.n.06. P15.n.03 is the resetting threshold. Min+Max = LIMn active when the measurement is
higher than P15.n.03 or lower than P15.n.06.
P15.n.05 and P15.n.06 - These define the upper threshold which is given by the value of P15.n.03 multiplied by P15.n.04.
P15.n.07 - Tripping delay on the upper threshold.
P15.n.08, P08.n.09, P08.n.10 - as above referred to the lower threshold.
P15.n.11 - This allows to reverse the LIMn limit state.
P15.n.12 - This defines whether the threshold remains stored or must be manually reset using the command menu (ON) or whether it resets automatically (OFF).
P16 - COUNTERS
(CNTn, n = 1…8)
Unit Default Range
P16.n.01 Counter source OFF OFF
ON
INPx
OUTx
LIMx
REMx
PLCx
Axx

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UAx
RALx
P16.n.02 Channel no. (x) 1 1-99
P16.n.03 Multiplier 1 1-1000
P16.n.04 Splitter 1 1-1000
P16.n.05 Counter description CNTn (Text - 16 characters)
P16.n.06 Unit of measurement UMn (Text - 6 characters)
P16.n.07 Reset source OFF OFF
ON
INPx
OUTx
LIMx
REMx
PLCx
Axx
UAx
RALx
P16.n.08 Channel no. (x) 1 1-99
Note: This menu is divided into 8 sections for counters CNT1..8.
P16.n.01 - Signal which causes the counter increments (on ramp up). It may be energised by the ATL900 (ON), the exceeding of a threshold (LIMx), the activation
of an external input (INPx), a logical condition (PLCx) etc.
P16.n.02 - Channel number x referred to the previous parameter.
P16.n.03 - Multiplying K. The counted pulse are multiplied by this value before being displayed.
P16.n.04 - Fractioning K. The counted pulse are divided by this value before being displayed. If different from 1, the counter is displayed with two decimal digits.
P16.n.05 - Description of the counter. Free text 16 characters.
P16.n.06 - Counter unit of measurement. Free text 6 characters.
P16.n.07 - Signal which causes the resetting of the counter. The counter remains equal to zero for as long as this signal is active.
P16.n.08 - Channel number x referred to the previous parameter.
M17 - TIMER
(TIMn, n = 1…8)
Unit Default Range
P17.n.01 Timer source OFF
ON
INPx
OUTx
LIMx
REMx
PLCx
Axx
UAx
RALx
P17.n.02 Channel no. (x) 1 1-99
P17.n.03 Delay sec 0 0.0
–
6000.0
Note: This menu is divided into 8 sections for the timers TIM1..8.
P17.n.01 - Source variable which controls the starting and resetting of the concerned timer.
P17.n.02 - Channel number referred to the previous parameter.
P17.n.03 - Timer time.
M18 – REMOTE ALARMS
(RALn, n = 1…24)
Unit Default Range
P18.n.01 RALn output function (miscellaneous) (see Output functions
table )
P18.n.02 Function index (x) OFF OFF / 1…99
P18.n.03 Normal/reverse output NOR NOR / REV
Note: this menu is divided into 24 sections for state/alarm remoting variables RAL1…RAL24, available in combination with the external unit RGKRR
P18.n.01 - This selects the remote output function RALn. The remote outputs (remote unit relay RGKRR) may assume the same functions as the local outputs,
including the operating states, the alarms etc.
P18.n.02 - Index possibly associated to the function programmed under the previous parameter. Example: If the function of the output is set to the Alarm Axx
function and this output must be energised when alarm A31 occurs, then P18.n.02 is set to value 31.
P18.n.03 - This sets the output state when the associated function is not active: NOR = de-energised output, REV = energised output.

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M19 - ANALOG INPUTS
(AINn, n=1…6)
Unit Default Range
P19.n.01 Input type OFF OFF
0..20mA
4….20mA
0…10V
-5V…+5V
PT100
P19.n.02 Start scale value 0 -9999 - +9999
P19.n.03 Multiplier x1 /100 - x1k
P19.n.04 Full scale value 100 -9999 - +9999
P19.n.05 Multiplier x1 /100 - x1k
P19.n.06 Description
A
INn (Text - 16 characters)
P19.n.07 Unit of measurement UMn (Text - 6 characters)
Note: this menu is divided into 8 sections for the analog inputs AIN1…AIN8, available in combination with the expansion modules EXP1004.
P19.n.01 - This specifies the sensor type connected to the analog input. According to the selected type, the sensor must be connected to the appropriate terminal.
See the input module manual.
P19.n.02 and P19.n.03 - These define the value to be viewed when the sensor signal is low, i.e. at the beginning of the range defined by the type (0mA, 4mA, 0V, -
5V etc). Note: these parameters are not used for PT100 type sensors.
P19.n.04 and P19.n.05 These define the value to be viewed when the sensor signal is maximum, i.e. at the full scale of the range defined by the type (20ma,10V,
+5V etc). These parameters are not used for PT100 type sensors.
P19.n.06 - Description of the measurement related to the analog input. Free text 16 characters.
P19.n.07 - Unit of measurement. Free text 6 characters. If the input is PT100 type and text of the unit of measurement is °F, the temperature will be displayed in
degrees Fahrenheit, otherwise it will be in degrees Celsius.
Example of application:The analog input AIN3 must reach a 4…20mA signal from an electronic level sensor which must be indicated on the display with the
message 'Tank reserve level’, and a full scale of 1500 litres.
Section 3 of this menu, referred to AIN3 will be programmed as follows.
P19.3.01 = 4…20mA
P19.3.02 = 0
(
0 x 1 = 0 litres, scale start value corresponding to 4mA)
P19.3.03 = x1
P19.3.04 = 1500
(
1500 x 1 = 1500 litres, full scale value corresponding to 20mA)
P19.3.05 = x1
P19.3.06 = 'Tank reserve level
’
P19.3.07 = ‘litres’
M20 - ANALOG OUTPUTS
(AOUn, n=1…6)
Unit Default Range
P20.n.01 Output type OFF OFF
0..20mA
4….20mA
0…10V
-5V…+5V
P20.n.02 Reference measurement OFF OFF- (measurements)
P20.n.03 Reference source OFF OFF
SRC1
SRC2
SRC3
P20.n.04 Channel no. (x) 1 1-99
P20.n.05 Start scale value 0 -9999 - +9999
P20.n.06 Multiplier x1 /100 - x10k
P20.n.07 Full scale value 0 -9999 - +9999
P20.n.08 Multiplier x1 /100 - x10k
Note: this menu is divided into 8 sections for the analog outputs AOU1…AOU8, available in combination with the expansion mod
u
les EXP1005.
P20.n.01 -This specifies the analog output signal type. According to the selected type, the connection must be made on the appropriate terminal. See the analog
output module manual.
P20.n.02 - Measurement from which the anlogue output value depends.
P20.n.03 - Number of the source line SRCx to which the measurement selected in the previous parameter refers (if applicable).
P20.n.05 and P20.n.06 - These define the value of the measurement which corresponds to an output value at the low end of the range (0mA, 4mA, 0V, -5V etc).
P20.n.07 and P20.n.08 - These define the value of the measurement which corresponds to the top end of the range (20ma,10V, +5V etc).
Example of application: Analog output AOU2 must emit a 0..20mA signal proportional to the total active power of the SRC2 line, from 0 to 500 kW. Section 2 of this
menu, referred to AOU2 will be programmed as follows.
P20.2.01 = 0…20mA
P20.2.02 = kW tot
P20.2.03 = SRC2
P20.2.04 = 1 (not used)
P20.2.05 = 0
(
0 x 1 = 0 W, start scale value)
P20.2.06 = x1
P20.2.07 = 500
(
500 x 1 = 500 kW, full scale value)
P20.2.08 = x1
k