DP-PSUEN EN54-4 Fire Alarm Power Supply Series
– INSTALLATION & OPERATION MANUAL
DP-PSUEN Series Installation & Operation Manual Rev 11.1 220323.docx
E&OE
- 7 -
4.3
PRINTED CIRCUIT BOARD
All three power supplies have a very similar form, fit and function, the dimensions are identical. The DP-PSUEN5 is
shown as an example below.
NOTE
: Plastic cage is not fitted on the DP-PSUEN5 power supply:
168.00
141
.00
145.00
6.00
10.00
7.00
129
.50
6
.00
5
.50
Power DC status LED, yellow: Indicates
that DC power is available
AC OK led, green: Indicates
availability of external AC power
Battery Fault, yellow: Indicates
if any battery faults are present
PSU Fault, yellow: Indicates
any power supply system faults
are present
Battery
Connectors
Nominal 24V
output 2 to load
Nominal 24V
output 1 to load
3.2mm Mounting Holes x 5
Live AC power connection
Case and earth connection tab
Protective earth connection
Neutral AC power connection
SW1 and SW2 control inputs
inversion jumper
Battery-free operation jumper
Optional external temperature
sensor connector
On-board temperature sensor
disable jumper
24V output switching control
inputs with 0V return
External Power Supply (AC power)
fault normally closed relay output
Serial data interface
External LED interface
Auxiliary Power Supply (battery)
fault normally closed relay output
Power Supply fault normally
closed relay output
Plastic safety cage
5
INSTALLATION AND OPERATION
NB:
WARNING: Isolate the AC power supply before working on the power supply. Only suitably qualified
personnel should install these power supplies and wiring should comply with the latest edition of IEE
Wiring Regulations (BS 7671) or local national electrical standards.
5.1
MOUNTING
The power supplies are designed for indoor use, within the specified operational temperature and humidity limits.
The metal enclosures should be mounted on a solid, flat and dry surface using the three mounting points provided.
The screws should have a minimum shank diameter of 5mm (No 11 gauge) and use suitable wall plugs where
needed.
