Ziton ZP3 fault records

ZP3: Fuse ratings on the power supply board

The legend lists: F6 auxiliary 24 V DC supply, F4AL250V (20 x 5 mm, 4.0 A fast-blow); F1 battery fuse, S6300mAL250V (20 x 5 mm, 6.3 A slow-blow); F8 and F7 monitor sound, F1AL250V (1.0 A fast-blow); F5 RMC FLT alarm, F1AL250V (1.0 A fast-blow); F2 and F3 monitor sounders, F1AL250V (1.0 A fast-blow); F9 PSU 24 V DC supply, S6300mAL250V (6.3 A slow-blow); F10 PSU 5 V DC logic (internal), S500mAL250V (500 mA slow-blow); FM mains fuse, F5AL250VAC (BS1362).

ZP3: Internal supply LEDs 37, 15, 14, 8, 7, 2 and 4

The legend lists these green LEDs as supply indicators: on means the supply is on and off means the supply is faulty. LED 37: internal 24 V DC supply. LED 15: internal supply for the CPU (5 V DC). LED 14: internal supply for logic (5 V DC). LED 8: internal supply for RS232 (12 V DC -ve). LED 7: internal supply for RS232 (12 V DC +ve). LED 2: internal supply for the ZP3AB-SCB-D control bus driver. LED 4: mains 230 V AC supply.

ZP3: LED 1: battery charging

LED 1 is listed in the legend as the battery charging indicator.

ZP3: Power supply LED 18: earth fault

Diagnostic LED 18 on the ZP3 power supply/main board: the legend lists it as default off, and green on means an earth fault.

ZP3: Power supply LED 19: loop fault

Diagnostic LED 19: the legend lists it as default off, and green on means a loop fault.

ZP3: Power supply LED 20: sounder fault

Diagnostic LED 20: the legend lists it as default off, and green on means a sounder fault.

ZP3: Power supply LED 21: ADC failure

Diagnostic LED 21: the legend lists it as default off, and green on means an ADC (analogue-to-digital converter) failure.