Danfoss VACON 1000 Operating Manual page 145

Operating Guide | VACON® 1000
Check that the internal cabling is firm and correct.
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Fault Code 62 - Auto Bypass Condition is not Satisfied
Cause
The operation status of the drive does not meet the bypass condition.
System default operation: Trip
Troubleshooting
None.
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Fault Code 63 - External Fault
Cause
To realize an external motor protection, the motor protection relay can be connected to one preset protection input of the drive.
System default operation: Coast stop. System operation is configurable.
Troubleshooting
Check if the user terminal has fault signal output.
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Check that the wiring of the signal circuit is correct.
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Fault Code 64 - Power Cell DC-link Undervoltage
Cause
The DC-link voltage is higher than 300 V, but lower than 580 V.
System default operation: Alarm
Troubleshooting
Check if the high-voltage input is lower than the minimum allowed value.
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Check if the 3-phase input to the power cell is loose.
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Check that the fuse is in good condition.
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Fault Code 65 - Power Cell Overtemperature
Cause
If the temperature of the cooling heat sink near the IGBT is higher than the designed value, the normally closed contact of the
temperature sensor switch is disconnected.
System default operation: Trip. System operation is configurable.
Troubleshooting
Check if the ambient temperature exceeds the allowed value.
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Check that the cooling fan on the top of the cabinet is working normally.
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Check if the inlet air filter is clogged.
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Check if the drive is in overload operation for a long time.
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Check that the power cell temperature relay works normally.
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Fault Tracing
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