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AWZ333
11
Caution:
test activation/deactivation is stored in the memory even after unplugging of the device
test deactivation turns off the fault indication at the AW output. It does not affect the
battery complete
discharge system, though.
4.4 Battery charging current limitation
The PSU has a system that automatically limits the battery charging current:
Ibat = 0,4A max. – the CHARGE jumper on
Ibat = 0,9A max. – the CHARGE jumper off
4.5 Battery-assisted operation – standby time
To keep the standby time, the current drawn from the PSU during batter-assisted operation should be
limited.
Characteristics for a 17Ah/12V SLA
-
for grade 1 (12h) current Id=1,4A
4.6 PSU overload
The PSU is equipped with an output protection due to a PTC polymer fuse. If the load of the PSU exceeds
Izn (110% ÷ 150%), the output voltage is automatically cut off and indicated by the FAILURE red diode (Tab. 7).
The load shall be disconnected from the PSU output for approximately 1 minute.
5. Maintenance
Any and all maintenance operations may be performed following the disconnection of the PSU from the
power supply network. The PSU does not require performing any specific maintenance measures, however, in the
case of significant dust rate, its interior is recommended to be cleaned with compressed air. In the case of a fuse
replacement, use a replacement of the same parameters.
