KEB COMBIVERT F4-C Manuel D'instruction page 42

Error Diagnosis
3. Error Diagnosis
Undervoltage
GB
Overvoltage
Overcurrent
Overload
Cooling down phase
completed
Overheat
Ext. Overheat
no Overheat
Current limit resistor error
42
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 over the
permissible value.
Possible causes are - input voltage too high
Occurs, when exceeding the peak current or when 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 >70°C. Possible causes for this
are
Occurs, when external temperature monitoring is triggered. Possible
causes for this are
Internal or external excess-temperature error do not occur anymore.
Error "E. OH" or "E.dOH" can be reset.
Current limit resistor not bridged, occurs for a short time during the turn on
phase and is reset immediately. If the erorr message remains the following
may be the cause
- 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
- 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
- incorrect or input voltage too small
- high loss in the supply line
- brake resistor incorrectly connected
- braking module defective