Extension board with 16-input 16-output Installation | en 17
Bosch Security Systems B.V.
Installation manual
2024-01 | V02 |
4.7 Connecting the power supply to the extension
4.7.1 Direct power supply
Connect the power supply to the POWER 7-pin pluggable screw connector.
Figure4.6: Location of the power supply connector
Connect an external power supply (10 VDC - 30 VDC) to the extension at pin 1 (positive)
and pin 3 (0V) of the pluggable screw connector.
Bosch recommends using the Bosch APS-PSU-60 power supply unit.
This power supply can also be used as an Uninterruptible Power Supply (UPS) when using
the appropriate batteries. It also has relay outputs for monitoring the power good signals.
These can be connected to:
– pin 4 and 7 for power good AC
– pin 5 and 7 for power good Battery
– pin 6 and 7 for power good DC.
If the recommended power supply is not in use, it is useful to have these pins short-circuit.
Notice!
If a battery is used, the power supply unit (PSU) checks the battery status every 5 minutes.
During the self-test, the PSU switches its output from AC regulated power to battery
regulated power. This causes the device to be supplied by the battery only.
Make sure that the battery is maintained according to the advice of the manufacturer, in
order to reduce the risk of losing the power on the device during self-test.
The duration of this self-test is of approximately 1 second.
The Power Good AC signal is switched off during the self-test.
If no battery is connected, the PSU does not perform any self-test.
Depending on the security level of your building, it is recommended to replace the battery
more frequently (e.g. every 3 years, in order to keep the system running properly).
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