| Info: | Low voltage limit |
| Data type: | REAL |
Description:
Runtime error when controller is active.
The DC-bus voltage UDC_ACT drops below the threshold voltage UDC_ACT POWERFAIL_DETECT_RATIO * UDC_NOMINAL.
8Vxxxx.xx-x: A mains phase failure (STAT_UDC_MON = 16) was detected.
Reaction:
See error number 9000.
The parameter STAT_UDC_POWERFAIL is set to the value 2.
The under-voltage limiter is switched on during the movement stop.
Cause/Remedy:
See Power transmission
Mains disturbance:
- Brief mains or phase failure. -> Check phase voltages and DC bus voltage for brief dips during operation.
Mains wiring error or overloaded mains:
- High supply impedance, saturation effect of the mains transformer. -> Check if the envelope of the DC bus voltage UDC_ACT or the phase voltage in motor operation is reduced by more than 10%.
- Loose contact or mains phase not attached. See error number 7215.
- Mains phase failure. See error number 7215.
Single-phase mains operation:
- The DC bus voltage UDC_ACT cannot be sufficiently supported when the motor load is too high.
- Nominal voltage detection problem: -> Compare the measure nominal DC bus voltage UDC_NOMINAL with the DC bus voltage UDC_ACT or multimeter.
- Nominal voltage initialization problem: -> Compare the nominal DC bus voltage UDC_NOMINAL with the DC bus voltage UDC_ACT or multimeter.