Input Phase Loss; Output Phase Loss - Inovance IS580 Series User Manual

6 Troubleshooting
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Input phase loss

3-phase power supply normal?
Power board normal?
Control board normal?

Output phase loss

Drive to motor wirings well connected?
Use V/F control and disconnect motor,
voltage are balanced?
Power board normal?
IGBT normal?
Yes
Yes
Yes
UVW
No
Yes
No
Fix the wrong wirings
No
Replace power board
No
Replace control board
No
Fix the wrong wirings
Yes
Check if motor windings
are balanced
No
Replace power board
No
Replace IGBT