gefran AFE200 Series

AFE200 • Instruction Manual 139
9 - Troubleshooting
9.1 Alarms
Note ! To reset alarms, see Quick start guide, paragraph 6.6.1.
In the following table, the Code is visible only from serial line.
Code Error message shown
on the display
Sub-code
Description
0 No alarm
Condition: No alarm present
1 Overvoltage
Condition: DC link overvoltage alarm due to energy recovered from the motor. The voltage
supplied to the drive power section is too high with respect to the maximum limit.
Solution:
- Increase the bandwidth of the voltage regulator (if the problem occurs under dynamic condi-
tions)
- Use a larger drive.
2 Undervoltage
Condition: DC link undervoltage alarm.
The voltage arriving at the drive power section is too low compared to the minimum threshold
relating to the 560 Mains voltage parameter setting due to:.
- the mains voltage being too low or overextended voltage drops.
- poor cable connections (e.g. loose contactor terminals, inductance, filter, etc. ).
Solution: Check the connections and measure the mains voltage.
3 Ground fault
Condition: Ground short circuit alarm
Solution:
- Check the drive and pre-load circuit wiring.
4 Overcurrent
Condition: Instantaneous overcurrent protection intervention alarm.
This may be due to the incorrect setting of current regulator parameters or a short circuit betwe-
en phases or ground fault on the drive output.
Solution:
- Check the current regulator parameters
- Check the wiring to the mains and make sure the mains phases match those of the synchro-
nisation card.
5 Desaturation
Condition: Instantaneous overcurrent in the IGBT bridge alarm.
Solution: Switch the drive off and then switch it on again.
If the alarm persists, contact the technical service centre.
6 MultiUndervolt
Condition: The number of attempted automatic restarts after the Undervoltage alarm has exce-
eded the set PAR 4650 Underv res attempt value in the PAR 4652 Underv res delay time.
Solution: Too many Undervoltage alarms.
Adopt the proposed solutions for the Undervoltage alarm.
7 MultiOvercurr
Condition: 2 attempted automatic restarts after the Overcurrent alarm within 30 seconds. If
more than 30 seconds pass after the Overcurrent alarm was generated, the attempt counter is
reset.
Solution: Too many Overcurrent alarms. Adopt the proposed solutions for the Overcurrent
alarm
8 MultiDesat
Condition: 2 attempted at automatic restarts after the Desaturation alarm within 30 seconds.
If more than 30 seconds pass after the Desaturation alarm was generated, the attempt counter
is reset.
Solution: Too many Desaturation alarms.
Adopt the proposed solutions for the Desaturation alarm.
9 Undervolt AC
Condition: The measured mains voltage is too low