Danfoss VACON 1000 Operating Manual page 146

Operating Guide | VACON® 1000
Fault Code 66 - Power Cell IGBT Driver Fault
Cause
The IGBT has a failure.
System default operation: Trip. System operation is configurable.
Troubleshooting
Check that the power cell fault indicator is working normally.
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Fault Code 67 - Power Cell Input Phase Loss
Cause
One of the three input phases is lost.
System default operation: Alarm. System operation is configurable. Detected in PL. Not detected in PU.
Troubleshooting
Check if the 3-phase input of the power cell is loose.
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Check if the fuse is in good condition.
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Check the input voltage.
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Fault Code 68 - Downstream Fiber Communication Fault
Cause
The power cell has not received the signals from the optical fiber communication board.
System default operation: Trip. System operation is configurable.
Troubleshooting
Check that the optical fibers are in normal condition.
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Check if the joints of the optical fibers are loose or falling off.
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Fault Code 69 - Power Cell DC-link Overvoltage
Cause
The DC-link voltage exceeds 1150 V.
System default operation: Trip. System operation is configurable.
Troubleshooting
Check if the high-voltage input exceeds the maximum allowed value.
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If overvoltage occurs during deceleration, make the deceleration time of the drive longer.
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Fault Code 70 - Power Cell DC-link Ultra Overvoltage
Cause
The DC-link voltage exceeds 1300 V.
System default operation: Trip
Troubleshooting
Check if the high-voltage input exceeds the maximum allowed value.
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Fault Tracing
AQ363633621020en-000401 / 172F3117D