Wahlberg Roll Down Manual page 31

Code Error message
1 UNDERVOLTAGE
2 OVERVOLTAGE
4 OVERTEMP. >70C
5 MOTOR OVERTEMP.
6 INV OVERCURRENT.
7 INV OVERCURRENT.
8 INVRTER EEPROM
9, 64 INVERTER SHORT
249.805.013
Cause
Shutdown due to undervoltage in the DC link.
Shutdown due to overvoltage in the DC link.
Shut down due to inverter overheat.
Shut down due to motor overheat
Shut down due to inverter overload.
Shut down due to inverter overcurrent.
Malfunction in the inverter memory.
This is the switch off function due to a short-
circuit on the frequency inverter
31
Solution
The input voltage might be too low.
The input voltage might be too high.
The temperature of the power electronics in the frequency inverter is too high.
The cooling is insufficient, for example, ambient temperature too high, insufficient air
circulation, dirty air grate or the fan is defective.
The drive can only be restarted when it has been allowed to cool down.
This message is issued when the motor thermostat is triggered or the temperature of the
motor PTC is exceeded (if available).
The motor is being insufficiently cooled, for example, due to a defective fan.
The drive can only be restarted when it has been allowed to cool down.
Inverter output current (active current) too high.
Possible cause:
→
The motor load is too high
The momentary output current is permanently exceeding the rated current by more than
150%.
Possible causes:
→
The motor load is too high
Power cycle the Roll Down. Unplug the power and wait 30 seconds before applying power
again.
The inverter was heavily overloaded (also short term).
Causes can be for example:
a short-circuit / earth fault in the motor or in the supply leads.
Date: 2021-12-09