TWINFLEX
®
SRP Control Panel Engineering and Commissioning Manual
26
Power Supply: VPSU+, VPSU-, EARTH
VPSU +
VPSU
-
SCRN
ON BOARD PCB
FIELD CONNECTIONS
DC Power from
internal PSU
EARTH
DC power from the internal system power supply. 31V DC, 5A rating.
Output De-rating
Note: Monitored Outputs MO1 to MO3 and AUX PWR 1 and 2 can each supply a maximum of 1A.
Each zone can also supply a maximum of 160mA.
The total current must not exceed 3.8 Amps.
If all the outputs, zones and Aux power supplies are used they must be de-rated so that the total
maximum current of 3.8 Amps is not exceeded.
This will ensure a current of 1.2 Amps is available for battery charging.
Mains Input Wiring
Note:
If stranded cables are used for mains input wiring crimped end ferrules or other guards preventing loose
strands must be used by the engineer performing the installation, (soldering is not permitted).