Power Commissioning
Commissioning Handbook, AutroSafe Interactive Fire Detection System, Release 4, 116-P-ASAFE-COMMISS/EGB Rev.F, 2014-04-01,
Autronica Fire and Security AS
Page 15
5.2 Calibration Procedure - Power Unit BPS-410
When using Power Unit BPS-410 (including a 24V/10A power supply),
a calibration procedure must be performed. This is necessary in order
to obtain a correct temperature compensated charging voltage to the
batteries. The procedure is as follows:
Before applying power to the system, the power supply’s
temperature sensor (thermistor delivered with the power unit) must
be temporarily replaced with a fixed 2,2k resistor (terminal point 2
and 6 from the left, marked with a stippled line from terminal point
2 to the thermistor symbol at point 6).
Apply power to the system by connecting the mains cable to the
mains socket or by switching the power ON from an external main
fuse box.
Measure the voltage on the BSF-400’s battery terminals (BATT +/-)
while adjusting the voltage with a small screw driver to 27,4V on
the power supply (OUT ADJ).
Disconnect mains power from the power supply and remove
charger fuse F8.
Remove the resistor and reinsert the thermistor.
Insert the charger fuse F8 and re-connect mains power to the
power supply.
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