Danfoss VACON 1000 User Manual

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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.
AQ363633621020en-000201 / 172F3117106 | Danfoss A/S © 2021.06
Fault Tracing
VACON® 1000
Operating Guide

Danfoss VACON 1000 Specifications

General

Brand	Danfoss
Model	VACON 1000
Category	Media Converter
Language	English