ADL300 • Quick installation guide - Specifications and connection 107
10 - Troubleshooting
10.1 Alarms
Note ! To reset alarms, see paragraphs "8.2.6 Displaying and resetting Alarms" on page and "8.3.11 Alarms" on page .
In the following table, the Code is visible only from serial line
Code Error message shown
on the display [on the
integrated keypad]
Sub-code Description
0 No alarm Condition: No alarm present
1 Overvoltage [OV]
Condition: DC link overvoltage alarm due to energy recovered from the motor.
The voltage arriving at the drive power section is too high compared to the maximum threshold relating to the PAR 560 Mains voltage parameter setting.
Solution:
- Extend the deceleration ramp.
- Use a braking resistor to dissipate the energy recuperation, to be connected to the specific terminals. See section "7.1.9 Connection of braking resistor
(optional)" on page .
2
Undervoltage [UV]
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 mains voltage
3 Ground fault [GNDF] Condition: Ground short circuit alarm
Solution:
- Check drive and motor wiring.
- Check that the motor is not grounded.
4 Overcurrent [OC]
Condition: Instantaneous overcurrent protection intervention alarm.
This may be due to the incorrect setting of current regulator parameters or a short circuit between phases or ground fault on the drive output.
Solution:
- Check the current regulator parameters (menu 17)
- Check wiring towards the motor
5 Desaturation [DES] Condition: Instantaneous overcurrent in the IGBT bridge alarm.
Solution:
- Switch the drive off and then switch it on again.
- Check the condition of the braking resistor isolation. Make sure there are no earth leakages.
- If the alarm persists, contact the technical service centre.
6 MultiUndervolt [MUV]
Condition: The number of attempted automatic restarts after the Undervoltage alarm has exceeded the set PAR 4650 UVRep attempts value in the PAR
4652 UVRep delay time.
Solution: Too many Undervoltage alarms.
Adopt the proposed solutions for the Undervoltage alarm.
7 MultiOvercurr [MOC]
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 [MDES]
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 Heatsink OT [HOT] Condition: Heatsink temperature too high alarm
Solution:
- Verify the correct operation of the cooling fan.
- Check that the heatsinks are not clogged
- Check that the openings for the cabinet cooling air are not blocked.
10 HeatsinkS OTUT [HSOT]
Condition: IGBT module temperature too high or too low alarm
Solution:
- Verify the correct operation of the cooling fan.
- Check that the heatsinks are not clogged
- Check that the openings for the cabinet cooling air are not blocked.
11 Intakeair OT [IOT]
Condition: Input air temperature too high alarm.
Solution: Check correct fan operation
- Check that panel cooling air openings are unobstructed.
- Check temperature in electrical panel.
12 Motor OT [MOT]
Condition: Motor overtemperature alarm. Possible causes:
- Load cycle too heavy
- The motor is installed in a place where the ambient temperature is too high
- If the motor is provided with a blower: the fan is not working
- If the motor is not provided with a blower: the load is too high at slow speeds. Cooling the fan on the motor shaft is not sufficient for this load cycle.
- The motor is used at less than the rated frequency, causing additional magnetic losses.
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