Pulsar EN54-3A28LCD User manual

EN54-3A28LCD
v.1.1
EN54 27,6V/3A/2x28Ah/LCD
power supply for fire alarm systems
EN**
Edition: 4 from 11.01.2016
Supersedes the edition: 3 from 26.08.2014
LCD Version

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TABLE OF CONTENTS
1. PSU FEATURES:....................................................................................................................................4
2. PACKAGE CONTENTS........................................................................................................................5
3. FUNCTIONAL REQUIREMENTS OF THE PSU..............................................................................6
4. TECHNICAL DESCRIPTION..............................................................................................................7
4.1. GENERAL DESCRIPTION........................................................................................................................................................7
4.2. BLOCK DIAGRAM.................................................................................................................................................................7
4.3. DESCRIPTION OF COMPONENTS AND POWER SUPPLY TERMINALS.........................................................................................8
5. INSTALLATION...................................................................................................................................11
5.1. REQUIREMENTS. ................................................................................................................................................................11
5.2. INSTALLATION PROCEDURE. ..............................................................................................................................................11
6. FUNCTIONS..........................................................................................................................................13
6.1. CONTROL PANEL. ..............................................................................................................................................................13
6.2. FIRST RUN OF THE PSU –LANGUAGE SELECTION SCREEN..................................................................................................14
6.3. MAIN SCREEN OF THE LCD................................................................................................................................................14
6.4. INFORMATION DISPLAYED ON THE LCD PANEL. ................................................................................................................15
6.4.1. Preview menu.............................................................................................................................................................15
6.4.2. LCD screen –current parameters . .....................................................................................................................16
6.4.3. LCD screen –current failures ............................................................................................................................17
6.4.4. LCD screen –history of the parameters .............................................................................................................17
6.4.5. LCD screen –history of events ...........................................................................................................................19
6.4.6. List of failure codes and information messages. ........................................................................................................20
6.5. TECHNICAL OUTPUTS.........................................................................................................................................................21
6.6. INPUT OF COLLECTIVE FAILURE EXTI................................................................................................................................22
6.7. INDICATION OF THE ENCLOSURE OPENING -TAMPER. .....................................................................................................23
6.8. INCREASING THE NUMBER OF OUTPUTS WITH OPTIONAL EN54-LB4 OR EN54-LB8 FUSE MODULES.................................23
6.9. OVERVOLTAGE PROTECTION OF THE PSU OUTPUT OVP....................................................................................................24
6.10. PSU OVERLOAD...............................................................................................................................................................24
6.11. INDICATION OF EXCEEDING THE „IMAX A”CURRENT.......................................................................................................24
6.12. SHORT-CIRCUIT OF THE PSU OUTPUT. .............................................................................................................................24
7. PSU SETTINGS.....................................................................................................................................25
7.1. PASSWORD.........................................................................................................................................................................25
7.1.1. Entering the password................................................................................................................................................25
7.1.2. Changing the password..............................................................................................................................................26
7.1.3. Disabling the password..............................................................................................................................................26
7.1.4. Resetting passwords. ..................................................................................................................................................26
7.1.5. Keyboard lock. ...........................................................................................................................................................27
7.2. PSU...................................................................................................................................................................................28
7.2.1. Battery test activation.................................................................................................................................................28
7.2.2. Acoustic indication ON/OFF......................................................................................................................................29
7.2.3. EXTo output ON/OFF ................................................................................................................................................30
7.2.4. Setting the delay time for EPS output indicating 230V AC power loss. .....................................................................30
7.2.5. Setting the communication address applies to cooperation with PowerSecurity..............................................31
7.2.6. Setting the transmission parameters applies to cooperation with PowerSecurity. ...........................................32
7.3. CONTROL PANEL................................................................................................................................................................33
7.3.1. Setting the display language.......................................................................................................................................34
7.3.2. Setting the date...........................................................................................................................................................34
7.3.3. Setting the time...........................................................................................................................................................35
7.3.4. Setting the backlight mode..........................................................................................................................................35
7.3.5. Contrast setting ..........................................................................................................................................................36
7.3.6. Blinking light indicating failure .................................................................................................................................36

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8. RESERVE POWER SUPPLY CIRCUIT. ..........................................................................................38
8.1. BATTERY DETECTION.........................................................................................................................................................38
8.2. PROTECTION AGAINST SHORT -CIRCUIT OF THE BATTERY TERMINALS. ..............................................................................38
8.3. PROTECTION AGAINST REVERSE BATTERY CONNECTION....................................................................................................38
8.4. DEEP DISCHARGE BATTERY PROTECTION UVP..................................................................................................................38
8.5. BATTERY TEST...................................................................................................................................................................38
8.6. MEASUREMENT OF THE RESISTANCE OF THE BATTERY CIRCUIT.........................................................................................39
8.7. BATTERY TEMPERATURE MEASUREMENT. .........................................................................................................................39
8.8. STANDBY TIME. .................................................................................................................................................................39
9. REMOTE MONITORING (OPTIONS: WI-FI, ETHERNET, RS485, USB).................................40
9.1. COMMUNICATION VIA THE USB-TTL INTERFACE. ............................................................................................................40
9.2. ETHERNET NETWORK COMMUNICATION.........................................................................................................................40
9.3. THE WI-FI WIRELESS COMMUNICATION.............................................................................................................................41
9.4. RS485 NETWORK COMMUNICATION. .................................................................................................................................42
9.5. „POWERSECURITY”PROGRAM...........................................................................................................................................43
10. TECHNICAL PARAMETERS..........................................................................................................44
Table 15. Electrical parameters...........................................................................................................................................44
Table 16. Mechanical parameters........................................................................................................................................45
Table 17. Safety of use..........................................................................................................................................................45
Table 18. Operation parameters. .........................................................................................................................................46
Table 19. Recommended types and sections of installation cables. .....................................................................................46
11. TECHNICAL INSPECTIONS AND MAINTENANCE..................................................................47
11.1. BATTERY REPLACEMENT OF THE LCD PANEL..................................................................................................................47

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1. PSU features:
In accordance with standards: EN 54-4,
EN12101-10
27,6V DC/ 3A uninterruptible power supply
battery housing for two 28Ah/12V batteries
independently protected outputs AUX1 and AUX2
high efficiency 84%
low level of voltage ripple
microprocessor-based automation system
intelligent PSU overload protection
measurement of the resistance of the battery circuit
automatic temperature-compensated charging
battery test
two-stage battery charging process
accelerated battery charging
monitoring of the continuity of the battery circuit
monitoring of the battery voltage
monitoring of the battery fuse
monitoring of charging and maintenance of the
batteries
deep discharge battery protection (UVP)
battery overcharge protection
battery output protection against short-circuit and
reverse connection
monitoring of the load current
output voltage control
fuse monitoring of AUX1and AUX2 outputs
230V AC mains voltage measurement
„SERIAL” communication port with implemented
MODBUS RTU protocol
Power Security" is a free application for remote
monitoring of power supplies (for PC and Android
Phones)
remote control (options: WiFi, Ethernet, RS485,
USB)
remote battery test (required additional modules)
cooperation with optional EN54-LB4 or EN54-LB8
fuse modules
optical indication of PSU overload OVL
acoustic indication of failure
adjustable delay for 230V AC power loss indication
relay output of collective failure ALARM
input of collective failure EXTi
controlled relay output EXTo
technical inputs/outputs with galvanic isolation
EPS technical output indicating 230V AC power loss
PSU technical output indicating PSU failure
APS technical output indicating battery failure
internal memory of PSU operating status
optical indication –LCD panel
readings of electrical parameters, including:
voltage, current, resistance of the circuit, mains
supply voltage
failure indication
configuration of the PSU settings from the
control panel
two levels of password protected access
operation memory of the PSU
failure memory
real time clock with battery backup
protections:
SCP short-circuit protection
OLP overload protection
OHP overheat protection
OVP overvoltage protection
Surge protection
Antisabotage protection (Tamper)
closing the enclosure - lock
convection cooling
warranty - 5 years from the production date

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2. Package contents.
Power Supply Unit
User manual
Red mounting spacers –4 pieces
Red, metal mounting brackets for hanging the power supply –4 pieces
M8x16 mounting screws –4 pieces
PG9 cable glands –4 pieces
PG11 cable glands –4 pieces
Battery serial connection cable
Keys to lock the power supply–2 pieces
Cable tie 190x4,8 –12 pieces

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3. Functional requirements of the PSU.
The buffer power supply for fire alarm systems has been designed in accordance with the following
standards:
- EN 54-4:2001 and / A2:2007 Fire detection and fire alarm systems.
- EN 12101-10:2007 Smoke and heat control systems.
Functional requirements
Requirements
according to
standards
PSU
EN54-3A28LCD
External Power Supply failure indication
YES
YES
Two independent power supply outputs protected against short-circuit
YES
YES
Temperature-compensated battery charging
YES
YES
Measurement of the resistance of the battery circuit
YES
YES
Low battery indication
YES
YES
Deep discharge battery protection
YES
YES
Protection against short-circuit of the battery terminals
YES
YES
Blown battery fuse indication
YES
YES
Charging circuit failure indication
YES
YES
Low output voltage indication
YES
YES
High output voltage indication
YES
YES
Indication of power supply failure
YES
YES
Overvoltage protection
YES
YES
Short-circuit protection
YES
YES
Overload protection
YES
YES
Output of collective failure ALARM
YES
YES
EPS technical output
YES
YES
APS technical output
YES
YES
PSU technical output
-
YES
Input of an external failure indication EXTi
-
YES
Controlled relay output EXTo
-
YES
Remote battery test
-
YES
230V AC mains supply voltage measurement
-
YES
LCD optical indication
-
YES
Tamper indicating enclosure opening
-
YES

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4. Technical description.
4.1. General description.
The buffer power supply has been designed for an uninterrupted supply of fire alarm systems, smoke and
heat control systems, fire protection equipment and fire automatics requiring stabilized voltage of 24V DC (± 15%).
The PSU is fitted with two independently protected outputs AUX1 and AUX2, which supply voltage of 27,6V DC
with a total output current:
Continuous operation
Output current Imax a=1,5A
Instantaneous operation
Output current Imax b=3A
In case of power loss, the PSU switches to battery power, providing uninterruptible power supply. The
PSU is enclosed in a metal casing (color: RAL 3001 - red) with battery housing for two 28Ah/12V batteries. The
PSU works with maintenance-free lead acid batteries made with AGM technology or gel technology.
4.2. Block diagram.
The PSU has been manufactured based on a high-efficiency system of DC/DC converter. Applied
microprocessor circuit is responsible for the full diagnostics of the PSU parameters and batteries. The figure below
shows a flowchart of the power supply, along with selected functional blocks which are essential for the proper
functioning of the unit
Fig. 1. PSU block diagram.

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4.3. Description of components and power supply terminals.
Table 1. Components of the Power supply PCB (Fig. 2).
Comp
onent
No.
Description
[1]
PANEL –optical indication connector
[2]
BUZZER –acoustic indication (section 7.2.2)
[3]
VEXT jumper–polarization of the EXTi circuit (section 6.6)
[4]
FBAT –fuse in the battery circuit, F6,3A / 250V
[5]
FAUX1 –fuse in the AUX1 output circuit, F5A / 250V
[6]
FAUX2 –fuse in the AUX2 output circuit, F5A / 250V
[7]
SERIAL –communication port
[8]
Z2 jumper
–temporary lock of the battery test (section 8.5)
–The EXTo relay switch lock from the PowerSecurity application-level (section 7.2.3)
[9]
OVP –overvoltage protection optical indication (section 6.9)
[10]
LEDs –optical indication:
AC –AC power
AUX1 –AUX1 output voltage
AUX2 –AUX2 output voltage
OVL –PSU overload
APS –battery failure
PSU –PSU failure
ALARM –collective failure
EXTi –EXTi input status
EXTo –EXTo relay output status
LB –battery charging
[11]
Terminals:
~AC~ –AC power input
EPS FLT –technical output of AC power failure indication
open = AC power failure
close = AC power - O.K.
PSU FLT –technical output of PSU failure indication
open = failure
close = PSU operation - O.K.
APS FLT –technical output of battery failure
open = battery failure
close = battery status - O.K.
ALARM –technical output of collective failure of the PSU -
relay type
CAUTION! In Fig.2 the set of contacts shows a
potential-free status of the relay, which corresponds to
power supply failure.
EXTo –controlled relay output
EXTi –input of collective failure
+BAT- –terminals for connecting the battery
+AUX1- –AUX1 power output
(+AUX1= +U, -AUX=GND)
+AUX2- –AUX2 power output
(+AUX2= +U, -AUX=GND)
[12}
TAMPER –antisabotage protection microswitch connector (section 6.7)
[13]
Connector –for connecting the EMC filter
Fig. 2. The view of the PSU’s PCB.

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Table 2. Components of the PCB of the EMC filter (Fig. 3).
Element
No.
Description
FMAINS fuse in the power supply circuit 230V, T3,15A / 250V
L-N power supply connector 230V AC, PE protective connector
Connector–for connecting the PSU.
Fig. 3. The view of the EMC filter.

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Table 3. Elements of the PSU (see Fig. 4).
Component
No.
Description
[1]
Isolation transformer
[2]
Printed Circuit Board (see Table 1, Fig. 2)
[3]
Battery temperature sensor.
[4]
Space to install an additional module:
“INTR”, “INTE”, “INTW”,
[5]
Place to install the EN54-LB4 or EN54-LB8 fuse module
[6]
TAMPER; microswitch (contacts) of antisabotage protection (NC)
[7]
EMC filter module (see Table 2, Fig. 3)
[8]
2x28Ah batteries
[9]
Embossing for cable gland
[10]
Embossing for cable gland (WiFi antenna or cable communication interface)
[11]
Embossings for concealed wires
[12]
Lock
[13]
Battery connectors; positive: +BAT = red, negative: - BAT = black
Fig.4. The view of the PSU.

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5. Installation.
5.1. Requirements.
The PSU is to be mounted by a qualified installer, holding relevant permits and licenses (applicable and
required for a given country) for 230V/AC in and low-voltage installations.
As the power supply is designed for a continuous operation and is not equipped with a power-
switch, therefore, an appropriate overload protection in the power supply circuit should be provided. Moreover, the
user should be informed how to disconnect the power supply unit from the mains supply (usually by assigning an
appropriate fuse in the fuse box). The electrical system shall be made in accordance with applicable standards
and regulations. The power supply should operate in a vertical position in order to provide free and
convectional air flow through ventilating holes of the casing.
As the PSU performs a periodic battery test, measuring the resistance of connections, special attention
should be paid to the proper installation of the cables. Installation cables should be firmly connected to the battery
side terminals and to the power supply connector.
The side walls of the housing include the embossings, which should be used to carry out installation cables. Use a
blunt instrument to make an opening for cable gland from the outside of the housing. Then, carefully mount the
cable gland, protecting the PSU from water penetration, in the opening.
Fig. 5. The method of forming an opening for cable gland.
The PSU is fitted with PG9 and PG11 cable glands. Gland size should be chosen depending on the cross-
section of the cable. Single cable gland can be used for only one wire.
Fig. 6. Recommended types and sections of installation cables PG9 and PG11 for cable glands.
The PSU is protected against access to the configuration menu through two-level passwords. If
the default settings should be changed, unlock access by entering the service password –see Table 5
and section 7.1.
5.2. Installation procedure.
CAUTION!
Before installation, cut off the voltage in the 230V power-supply circuit.
To switch power off, use an external switch, in which the distance between the contacts of
all poles in the disconnection state is not less than 3mm

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1. Mount the PSU in a selected location with use of special metal expansion bolts. Do not use PVC dowels.
2. Connect the power cables (230V AC) to L-N terminals of the PSU. Connect the ground wire to the terminal
marked with grounding symbol: PE. Use a three-core cable (with a yellow and green PE protection wire) to
make the connection.
The shock protection circuit shall be done with a particular care: the yellow and green wire coat of
the power cable should be connected to the terminal marked with the PE symbol on the PSU
enclosure. Operation of the PSU without the properly made and fully operational shock protection circuit
is UNACCEPTABLE! It can cause damage to the equipment or an electric shock.
3. Connect the receivers’ cables to the AUX1 and AUX2 output terminals on the PSU board.
4. If needed, connect the cables from the devices to the technical inputs and outputs:
- ALARM; technical output of collective failure of the PSU
- EPS FLT; technical output of AC power loss indication
- PSU FLT; technical output of PSU failure.
- APS FLT; technical output of the battery failure.
- EXTi; input of collective failure
5. Install the batteries in a designated area of the enclosure (see Fig. 4). Connect the batteries with the PSU
paying special attention to the correct polarity. Batteries must be connected in series using the special
cable (included).
6. Switch on the 230V AC supply. The corresponding LEDs on the power supply PCB should be ON: green
AC and green AUX1 and AUX2. Green LB LED should light up while charging.
7. Check the current consumption of the receivers, taking into account the battery charging current, so as not
to exceed the total current efficiency of the PSU (see section 4.1).
8. Once the tests are completed, close the enclosure.
Table 4. Operation parameters.
Environmental class PN-EN 12101-10:2007
2
Operating temperature
-5ºC...+75ºC
Storing temperature
-25ºC...+60ºC
Relative humidity
20%...90%, no condensation
Sinusoidal vibrations during operation:
10 ÷50Hz
50 ÷ 150Hz
0,1g
0,5g
Surges during operation
0,5J
Direct insolation
unacceptable
Vibrations and surges during transport
According to the PN-83/T-42106 standard
Table 5. Factory settings of the PSU.
Delay time for EPS technical output
indicating AC power loss
10s
See section 7.2.4.
Acoustic indication
ON
See section 7.2.2.
EXTo output
OFF
See section 7.2.3.
Communication address
1
See section 7.2.5.
Transmission
115.2k 8E1
See section 7.2.6.
Backlight
Constant –50%
See section 7.3.4.
Blinking light indicating failure
ON
See section 7.3.4
Passwords:
- user password
- service password
- keyboard lock
1111
1234
NO
See section 7.1

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6. Functions.
6.1. Control Panel.
The PSU features a panel with buttons and LCD display, enabling reading of all the available electrical
parameters. The panel buttons are used to select and confirm the parameters, which should be displayed.
Fig. 7. Control panel.
Table 6. The description of the buttons and LEDs of the LCD panel.
- moves the pointer on the screen
- next screen selection
- selection approval
- quit editing without saving
- starts preview mode
- green LED indicating AC power
- green LED AUX1 indicating power at the AUX 1 output of the PSU
- green LED AUX2 indicating power at the AUX 2 output of the PSU
- yellow LED ALARM indicating collective failure

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6.2. First run of the PSU –language selection screen.
During the first run of the PSU, language selection screen will be displayed.
Use the „<” or „>” buttons to select the available languages. After selecting the appropriate language, confirm by
pressing the "SET" button. The main screen will be displayed.
Fig. 8. Language selection screen.
If the language selection is not done, language selection screen will be displayed on the next startup. If the
choice has already been made, language selection can be done as explained in section 7.3.1.
Language selection screen can be displayed by simultaneously pressing the „<” and „>” buttons for a minimum
time of 5 seconds.
6.3. Main screen of the LCD.
Main screen of the LCD displays the basic electrical parameters and indicates the current status of the
power supply.
Fig. 9. Main screen of the LCD.
The resolution of voltage and current measurement is 0.1V and 0.1A, respectively. The
displayed values of voltages and currents should be treated with caution; if a greater accuracy is
required, use a multimeter.
Table 7. The description of the main screen symbols.
Screen field
Operating status
Failure status
The indicator displays 230V AC mains
supply voltage measurement.
Blinking „AC” icon.
Information about the current voltage at
the AUX1 and AUX2 outputs and total
power consumption.
The parameter, which value has been
exceeded, is blinking.
Information about the current state of
battery charge.
Blinking icon.
The value inside the symbol informs
about the maximum power supply
capacity.
The blinking warning symbol is displayed.
Fuse icon - blinking
Clock

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6.4. Information displayed on the LCD panel.
6.4.1. Preview menu.
Pressing the „ESC” button at the bottom of the display starts the preview menu, allowing to choose one of
the four available PSU screens.
Use the „<” or „>” buttons to choose a proper screen and press the „SET” button to confirm.
- current parameters of the PSU
(see section 6.4.2)
- current failures of the PSU
(see section 6.4.3)
- parameters of the PSU stored in the memory
(see section 6.4.4)
- History of events
(see section 6.4.5)

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6.4.2. LCD screen –current parameters .
To set the screen, press the „ESC” button, use the „<” or „>” buttons to choose the icon and press the
„SET” button to confirm.
The screen displays electrical parameters and the status of the technical outputs during operation.
Illumination of an element informs about an activation and reflects the status of LEDs on the PCB of the PSU (see
Table 1, [10]).
Fig 10. LCD panel –PSU parameters.
Table 8. The description of the screen symbols - current parameters of the PSU.
Screen field
Description
Additional information
- 230V AC power ON
(highlighted = AC power on)
See section 7.2.4
- Battery charging indication
(highlighted = battery charging)
- PSU overload indication
(highlighted = PSU overload)
- Indication of exceeding the „Imax a” current
(flashing = „Imax a” exceeded)
See section:
6.10,
6.11
- PSU failure indication
(highlighted = PSU failure)
See sections:
6.4.6
6.5
- Battery failure indication
(highlighted = battery failure)
See sections:
6.4.6
6.5
- EXTi input status indication
(highlighted = EXTi input activated)
See sections:
6.4.6
6.6
Current electrical parameters of the PSU:
UAC –mains supply voltage (230V AC)
UBAT –battery voltage
TBAT –battery temperature
RBAT –resistance of the battery circuit
UAUX1 –AUX1output voltage
UAUX2 –AUX2 output voltage
IAUX –total output current
See section:
6.4.4
The status of the technical outputs:
EPS - AC power indication
open= AC power failure
closed = AC power –O.K.
PSU –PSU failure indication
open= PSU failure
closed = PSU working correctly O.K.
APS –battery failure indication
open= battery failure
closed = battery O.K.
ALARM –collective failure indication
CAUTION! The set of contacts shows a potential-free
status
of the relay, which corresponds to power supply failure.
EXTo –relay output status indication
See sections:
6.4.6
6.5
TAMPER input status (highlighted = activated)
See section:
6.7

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6.4.3. LCD screen –current failures .
In case of abnormal electrical parameters during the operation, the PSU will indicate a failure by displaying a
message on the LCD, turning on the red LED ALARM on the panel, activating acoustic indication (if enabled) and
changing the status of a dedicated technical output.
Fig. 11. Message indicating blown fuse at the AUX2 output.
At a given time, multiple failures can occur. To check which faults are indicated, choose the current failures of
the PSU screen.
To do that, press the „ESC” button, use the „<” or „>” buttons to choose the icon and press the „SET”
button to confirm.
Fig. 12. LCD screen –current failures of the PSU.
The screen displays the codes and descriptions of failures. The display order of failures is arranged by priority
of importance. The first failures in the display order are of the highest priority.
If there are more than five failures at the same time, use the „<” or „>” buttons to display the next failure.
6.4.4. LCD screen –history of the parameters .
To set the screen, press the „ESC” button, use the „<” or „>” buttons to choose the icon and press the
„SET” button to confirm.
Fig. 13. Screen of the history of PSU’s parameters
During normal operation, the PSU records voltage and current parameters at the output circuits and saves them in
the internal non-volatile memory. The saving is repeated in 5 minutes intervals and the internal memory can store
up to about 6144 values. The memory works in a circular cycle - when the memory is full, the oldest entries
are replaced with the newest ones.
The screen of the parameters history enables reading of the stored parameters and scanning the values on
a chart. The screen features a time axis, located horizontally in the bottom part of the chart, and a
parameter axis, located vertically in the left. Use the „<” or „>” buttons to move the cursor into various time points
and read the value of the measurement.

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Fig. 14. Screen of the history of PSU’s parameters.
In order to change the displayed parameter, highlight its name by pressing the „SET” button and use the
„<” or „>” buttons to choose the requested parameter. Pressing the „SET” button again will highlight the time
range of the chart, which also can be changed with the „<” or „>” buttons. Pressing the „SET” button again will
enable moving the cursor (vertical dotted line on the chart) along the time line with the „<” or „>” buttons. The
values of current parameter and the recording time pointed by the cursor will also be highlighted
Among the available positions on the chart, it is possible to view the following values:
- current - the value measured at the end of the measuring cycle
- minimum - the lowest value measured during 5 minutes
- maximum - the highest value measured during 5 minutes
of the following parameters:
- UAC - mains supply voltage (230V AC)
- UAC MIN - mains supply voltage - minimum
- UAC MAX - mains supply voltage - maximum
- UAUX1 - AUX1 output voltage
- UAUX1 MIN - AUX1 output voltage, minimum
- UAUX1 MAX - AUX1 output voltage, maximum
- UAUX2 - AUX2 output voltage
- UAUX2 MIN - AUX2 output voltage, minimum
- UAUX2 MAX - AUX2 output voltage, maximum
- IAUX - output current
- IAUX MIN - output current, minimum
- IAUX MAX - output current, maximum
- UBAT - battery voltage
- UBAT MIN - battery voltage, minimum
- UBAT MAX - battery voltage, maximum
- TBAT - battery temperature
- TBAT MIN - battery temperature, minimum
- TBAT MAX - battery temperature, maximum
- RBAT - resistance in the battery circuit
To optimally read and analyze the values shown in the chart, it is possible to change the time range on the
bottom axis of the chart. The following ranges are available:
<8h>
<24h>
<2days>
<week> (weekly)

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6.4.5. LCD screen –history of events .
In case of abnormal electrical parameters during the operation, the PSU will indicate a failure by displaying
a message on the LCD, periodically turning on and off the LCD backlight, turning on the red LED ALARM on the
panel, activating acoustic indication (if enabled) and changing the status of a dedicated technical outputs.
To choose the history of events screen, press the „ESC” button, use the „<” or „>” buttons to choose the
icon and press the „SET” button to confirm.
Fig. 15. The history of events screen.
The history of events screen enables overviewing the events recorded by the internal diagnostic system.
The internal memory can store up to 2048 events, carrying information about the fault type, time of occurrence and
the values of other electrical parameters. In addition, the diagnostic system assigns the failure code for a particular
event on the basis of the stored parameters.
In order to preview the history of events, use the „<” or „>” buttons. It can be done in two modes: short
mode (date, time, code, fault description) or full mode - with additional information about electrical parameters and
status of inputs and outputs. To switch between the modes, press the „SET” button.
Fig. 16. Description of the history of events screen.
Section 6.4.6 lists all codes that may occur during the operation of the PSU. The individual codes are
accompanied by appropriate optical indication on the panel, acoustic indication and activation of a dedicated
technical output.
The memory of the new power supply remembers the events that are the result of the efficiency tests
carried out at the production stage.

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6.4.6. List of failure codes and information messages.
The PSU indicates the operation status with the appropriate code. The codes are divided into two
groups,marked with the initial letters "F" or "I”.
The codes beginning with the letter "F" indicate a failure. The codes that begin with the letter "I" indicate the
correct operation of the PSU or repaired fault, involving, for example, fuse replacement: "I03 - BAT fuse replaced”.
Table 9. List of PSU failure codes.
Failure
code
Information
Technical output
activation
Causes
Additional
information
F01
AC power fail!
EPS FLT,
ALARM
- No AC mains supply
- Blown FMAIN fuse
F02
AUX1 fuse fail!
PSU FLT,
ALARM
- Blown FAUX1 fuse
AUX2 fuse fail!
- Blown FAUX2 fuse
F03
BAT fuse fail!
APS FLT, ALARM
- Blown FBAT fuse
- Short circuit in the battery circuit
- Short circuit in the AUX output circuit
F04
Output overload!
PSU FLT,
ALARM
- PSU overload
See section 6.10
F05
Battery
undercharged!
APS FLT,
ALARM
- Spent batteries
- Undercharged batteries
See section 8
F06
High AUX1
voltage!
PSU FLT,
ALARM
- Output voltage over 29.2V
High AUX2
voltage!
F08
Charge circuit fail!
PSU FLT,
ALARM
- The output voltage of the PSU set too low,
below 26V
- Battery charging circuit failure
F09
Low AUX1
voltage!
PSU FLT,
ALARM
- Output voltage below 26V
Low AUX2
voltage!
F10
Low battery
voltage!
APS FLT,
ALARM
- The battery voltage has dropped below
23V (during battery-assisted operation
F11
Low battery volt. –
off!
APS FLT,
ALARM
- the battery voltage has dropped below 20V
(during battery-assisted operation)
See section 8.4
F12
External input
EXTi!
ALARM
- Activation of the input of collective failure:
EXTi
See section 6.6
F14
Temp. sensor
fault!
PSU FLT,
ALARM
- Faulty temperature sensor
- Temperature sensor disconnected
See section 8.7
F15
High battery
temp.!
PSU FLT,
ALARM
- Too high ambient temperature of the PSU.
- Overloaded batteries.
- Faulty batteries.
See section 8.7
F16
No battery!
APS FLT,
ALARM
- Disconnected batteries
See section 8.1
F17
Battery fail!
APS FLT,
ALARM
- Deeply discharged batteries, voltage below
20V
See section 8
F18
High batt. circuit
resist.!
APS FLT,
ALARM
- Spent batteries
- Loose cables connecting the batteries
See section 8.6
F19
High AC voltage!
PSU FLT,
ALARM
- Mains supply over 254V AC
F20
Low AC voltage!
PSU FLT,
ALARM
- Mains supply below 195V AC
F21
PSU cover
opened!
PSU FLT,
ALARM
See section 6.7
F50-F54
Internal supply fail!
PSU FLT,
ALARM
-service codes
F60
No communication
PSU FLT,
ALARM
- no communication with LCD panel
F61-F64
Control panel fail
PSU FLT,
ALARM
-service codes
F65
Access unlocked
- passwords unlocked