MA-2000
16 M-167.1-MA2000-EN / 06.2022
5.4.2 Batteries Installation
5.4.3 Power supply and battery operation
The main microprocessor of the control unit periodically checks the state of the main AC power supply source,
batteries and the recharging circuit. The control unit will automatically switch on the stand-by battery source
when AC mains fails.
When the control unit operates through AC mains, the main microprocessor controls the battery charger output
and the presence of them. To perform this test, the output battery charger is temporarily switched off and the
battery voltage is read (signalling of missing batteries< 15 V).
When the control unit operates as a battery (in the absence of the AC mains) “Low Battery” breakdown will be
indicated when their voltage is < 21,5 V and, to prevent irreversible damages the voltage will be automatically
switched off, by disconnecting the batteries, when the voltage is < 19,5 V.
All wirings MUST be checked BEFORE they are connected to the control unit.
It is recommended to perform at least the following checks!
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