ABB ACS580 fault 3220: DC link undervoltage
The drive’s DC link voltage fell too low and the drive tripped. ABB lists a missing supply phase, a blown fuse or a fault in the rectifier bridge as the causes. When the drive is stopped, the same condition shows as warning A3A2 instead of a fault.
Diagnose this with AI
Try Free Drive Diagnostic Upload a keypad photo, the fault history or a parameter export from your ABB ACS580. InduQT compares the evidence and suggests the next useful checks.
When it happens
- During supply dips or interruptions
- After a fuse blows or a supply phase is lost
- At the end of an automatic-restart window if the supply has not returned
Likely causes and checks
1Missing supply phase or blown fuse
- Points to it
- Trip coincides with a supply event; other equipment on the same supply also reacts.
- Check
- Check the supply cabling, fuses and switchgear.
2Supply interruption longer than the ride-through
- Points to it
- Trips after short power dips; automatic restart enabled but the dip lasted too long.
- Check
- Compare the length of the dip with 21.18 Auto restart time (up to 10 s), and check whether 30.31 Undervoltage control is enabled.
3Rectifier bridge fault
- Points to it
- Supply and fuses are healthy but the fault repeats.
- Check
- Refer to ABB service; the rectifier is inside the drive.
Telling it apart
- Fault 3220 trips the drive; warning A3A2 is the same low-voltage condition reported while the drive is stopped (ABB’s action: check the supply voltage and the 95.01 Supply voltage setting).
- With automatic restart, the undervoltage fault is held back for up to 21.18 seconds and a warning is shown; the drive trips on 3220 only if the DC voltage is still too low when that time runs out.
Relevant parameters
| Parameter | Name | Why it matters |
|---|---|---|
| 30.31 | Undervoltage control | Lowers motor torque so the load inertia keeps the DC link charged during a supply loss. |
| 21.18 | Auto restart time | Allows restart after a supply loss of up to 10 s; the fault is held back during this time. |
| 95.01 | Supply voltage | Should match the actual supply; checked for warning A3A2. |
| 31.12 | Autoreset selection (bit 2: undervoltage) | Can reset undervoltage automatically. |
Evidence to collect
- Event log entries for 3220 and A3A2 with time stamps
- Plant supply events or power-quality records at the same time
- Fuse and switchgear condition
- Settings of 30.31, 21.18 and 95.01
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