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VACON® 1000
Operating Guide
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.
•
Check if the fuse is in good condition.
•
Check the input voltage.
10.3.68 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.
•
Check if the joints of the optical fibers are loose or falling off.
10.3.69 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.
•
If overvoltage occurs during deceleration, make the deceleration time of the drive longer.
10.3.70 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.
•
If overvoltage occurs during deceleration, make the deceleration time of the drive longer.
10.3.71 Fault Code 71 - Power Cell Control Power Fault
Cause
Power cell auxiliary power supply is abnormal.
System default operation: Trip. System operation is configurable.
Troubleshooting
•
Power on again. If the cell still reports this fault, replace the power cell.
10.3.72 Fault Code 72 - Power Cell Capacitor Voltage Abnormal
Cause
The voltage of the middle capacitors is 40 V higher or lower than one third of DC-link voltage.
System default operation: Trip. System operation is configurable. Detected in PL. Not detected in PU.
Troubleshooting
•
Check that the balance resistors are in good condition.
•
Check that the DC-link capacitors are in good condition.
10.3.73 Fault Code 73 - Upstream Fiber Communication Fault
Cause
The optical fiber communication board has not received the signals from the power cell unit.
106 | Danfoss A/S © 2021.06
Fault Tracing
AQ363633621020en-000201 / 172F3117
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