Aux Voltage#1
Alarm Description:
Over/under voltage limit reached
This alarm signals that an undervoltage/overvoltage protection operation has occurred. Normally, this occurs in the following situations:
- 1. The voltage rises above a safe level, determined by the battery voltage, which is normally caused during a harsh regenerative braking scenario. This can be common when the batteries are fully charged, and cannot accept large amounts of regenerative current, and as a result the DC voltage begins to rise. In this case the regenerative braking must be reduced.
- 2. The voltage drops below a safe operating level, which is normally caused during a high load demand, such as lifting a heavy load with a pallet truck. This is normally caused by a faulty battery cell that is allowing the voltage to drop below a safe operating level.
- 3. If the fault occurs at key-on, then the controller may be supplied with the wrong battery supply voltage, or the logic has become faulty and needs to be replaced.