Pertronic Industries Ltd FAAST Power Supply Installation Note, Iss1.1 201501
Mains Lost
If the mains power is lost the Battery Fault LED immediately indicates a Mains Lost fault. In “NZ Mode”, the
fault relay contacts change over immediately. In AUS mode, the fault relay contacts indicate a fault only if the
Mains supply voltage has been continuously absent for more than 55 minutes.
Monitoring System Fault Table
Fault
Threshold
Position in Encoded
Pulse Stream
Relay Contact
Changeover Delay
High Charger Voltage
> 28.8 V
1st
20 seconds
Low Battery Voltage (In auto-test
mode, or when mains absent)
Low Charger Voltage
< 24.3 V
2nd 20
seconds
Battery Capacity Failure or
Battery Absent
< 23.6 V
3rd
30 – 40 seconds
Mains Lost
4th
Aus: 55 minutes
NZ: no fault if battery OK
Reset Switch Operation
The Reset Switch is mounted on the PSU Control Board. It provides the following functions:
A momentary press resets and restarts the 24-hour timer and clears any fault conditions indicated
by the Battery Fault LED. The next one-hour battery capacity test will start 23 hours after reset, and
then it will recur at 24 hour intervals.
Pressing the Reset switch for at least 2 seconds starts the one-hour battery capacity test
immediately. The Auto Test LED lights up during the test.
With the power supply in Auto-Test mode, pressing the Reset switch for about half a second
cancels the one-hour battery capacity test. The next battery test will then start 23 hours from this
time. This provides a method of checking that the batteries are properly connected. Start the test
by pressing the Reset switch for at least two seconds. If the Auto Test LED lights up, and the
Battery Fault LED does not, then the batteries are connected and working properly.
