3.7.1 Additional power supply unit – 41ALM172 (optional)
Unit 41ALM172 is a power supply unit designed to supply additional power to addressed fire panel 41CPE118. The power
supply unit is housed in a metal container suitable for creating a modular structure with the addressed panel and a second
power supply unit. Access to the main board and the cable connections is guaranteed by a special key (supplied). The status
of unit 41ALM172 is shown via specific LED indications on the PCB. The status of the power supply unit can be monitored
constantly by enabling the option “Check external power” in the menu of panel 41CPE118. To access the menu for this
function, proceed as follows:
SYSTEM – PROGRAMMING – DEVICES – PERIHPERY
and enable CHECK EXTERNAL POWER on the fire panel.
When the option is enabled, the panel will display an error message “External Power Supply Fault, Periphery Device 1-PSU” in
the event of problems with the power supply unit. The corresponding power supply fault will be indicated by an LED flashing
on the PCB.
During normal operation, only the green “OK” LED flashes and all the other LEDs are off. If the main power supply (230 V~) is
cut off, the yellow “FLT” fault LED starts flashing and the green “OK” LED turns off. If there are problems with battery 1 and/or
2, the yellow LEDs for sections Batt1 and/or Batt2 will flash.
For a detailed description of all the LED indicators, please refer to the technical manual for 41ALM172.
Connection
The connection diagram for a panel 41CPE118 with 2 additional power supply units 41ALM172 is shown below:
41ALM172
Main board
(first)
41ALM172
Main board
(second)
RED
BLACK
NOTE:
On the FLT terminals, the arrows facing in the inside of the main board for the 41ALM172 indicate the terminals for
board input signals, while the arrows facing outwards indicate the terminals for board output signals.
CAUTION:
•
Switch off the main power supply and the battery for panel 41CPE118 before installing the power supply
unit 41ALM172!
•
Only use the connection cables supplied with the equipment: red and black cables for connection to the
JP4 terminals; white and grey cables for connection to the FLT terminals! Do not shorten or lengthen
these cables!
•
Perform all wiring in observance of the connection polarities, following the connection diagrams shown.
If, after switching on power supply unit 41ALM172, the “INCORRECT CONNECTION” LED is on, switch
off the power supply immediately and check the connection between the power supply unit for panel
41CPE118 and the JP4 terminals on 41ALM172!
•
If the “High resistance” LED for Battery 1 or 2 is flashing, we strongly recommend you replace the
batteries immediately!
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