Marquette Hellige GmbH MicroSmart V 2.xx Page 13
Servicing Instructions 227 470 35 B - 97.12
Input voltage monitoring
Uref
Uin
Batt_Low
Input voltage
monitoring
V2
V2
The input voltage is monitored. If it drops to 11.3V, the LED_Bat lights up. This indicates that the
battery is in need of recharging. If the input voltage drops further to 10.3V, the signal "Batt_low"
will be activated. This signal is scanned by the processor. If it is active, the processor will deactivate
the unit (exhaustive discharge protection for the battery).
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