Elkron MEDEA, Руководство по установке

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MEDEA Installation Manual 21
1.7.2
Battery management
Battery test
The Battery Test is periodically run when mains voltage is present. This test is performed:
•
30 seconds after power is supplied to the control unit or mains power is restored.
•
The battery charge is automatically tested whenever the set interval expires.
•
Following a Battery Test command from the Technician or Master (manual test) menus on the keypad
or in the Diagnosis menu in the web configurator.
The battery is put under load during the test. If the battery is found to be inefficient (battery voltage < 11.5
V
⎓
), the test is aborted and the "Low Battery" event is generated, which triggers the "Low Battery Alarm".
The "Low Battery" status persists until the first successful "Battery Test" is completed.
Checking and charging the battery
The MEDEA system constantly monitors the state of the battery and the charging circuit keeps it charged
with a limited maximum current. The following behaviour occurs according to the presence or absence of
mains voltage and the value of the battery voltage:
Battery voltage Mains power present No mains power
≥ V
⎓
The charging circuit is automatically
deactivated to prevent damage to the
battery. 230 V~ mains fault signal.
10.5 V
⎓
… 9 V
⎓
Battery charge
10.5 V
⎓
… V
⎓
The battery test generates the "Low
B y” v The "Low Battery" event is generated.
The return from "Battery Low"
conditions occurs after the return of
mains voltage and a successful
battery test.
≤ V
⎓
The system assumes the "No Battery"
status and switches the charging
circuit off. As soon as a battery with a
v g ≥ V s ,
charging circuit is activated again. The battery is disconnected to protect
it from damage caused by deep
discharge.
Table 10 - Checking and charging the battery