Error Diagnosis - KEB COMBIVERT M4 Instruction Manual

Error Diagnosis

6.
Undervoltage
Overvoltage
Overcurrent
Overload
Cooling down phase
completed
Overheat
Ext. Overheat
no Overheat
GB - 34
Error Diagnosis
Error messages are represented with an "E. " and the corresponding error in the
display of the KEB COMBIVERT. The displays and their causes are described
below.
Occurs, when the intermediate ciruict voltage falls below the permissible value. Possible
causes are
Occurs, when the intermediate circuit voltage rises above the permissible value.
Possible causes are
Occurs, when exceeding the peak current or in case of ground fault.
Occurs when a too high load is applied for more than the allowed time (see
"Performance Data"). Possible causes for this are
After error E. OL you must wait for a cooling down time. This message appears
after the cooling down phase is completed. The error can be reset.
Occurs, when the inverter temperature is >70°C. Possible causes for this are
Occurs, when external temperature monitoring is triggered. Possible causes for
this are
Internal or external excess-temperature errors do not occur anymore. Error "E.
OH" or "E.dOH" can be reset.
- input voltage too low or unstable
- inverter power too small
- voltage loss due to incorrect cabling
- power supply by generator/transformer breaks down,
because ramps are too short
- input voltage too high
- disturbance voltages at the input
- delay ramps too short
- error or overload in the application
- inverter incorrectly dimensioned
- motor incorrectly wired
- insufficient cooling
- surrounding temperature too high
- ventilator clogged
- resistor on terminals OH/OH > 1650 Ohm
- motor overloaded
- break in the sensor cable