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VACON® 1000
Operating Guide
System default operation: Trip
Troubleshooting
•
Check the input voltage.
•
Check if the input cables are loose or disconnected.
10.3.3 Fault Code 3 - Input Power Loss
Cause
The voltage values of the 3 input phases are all lower than 70% of the rated value.
System default operation: Trip. System operation is configurable.
Troubleshooting
•
Check the input voltage.
10.3.4 Fault Code 4 - Input Undervoltage
Cause
The effective value of the input voltage is lower than 90% of the rated value.
System default operation: Alarm. System operation is configurable.
Troubleshooting
•
Check the input voltage.
10.3.5 Fault Code 5 - Input Overvoltage
Cause
The effective value of the input voltage is higher than 110% of the rated value.
System default operation: Trip
Troubleshooting
•
Check the input voltage.
10.3.6 Fault Code 6 - Input Grounding
Cause
Input grounding occurs, and the duration time is above 5 s.
System default operation: Trip. System operation is configurable.
Troubleshooting
•
Check the input cables, copper busbars, and transformer.
10.3.7 Fault Code 7 - Input Sequence Fault
Cause
The input cables are connected in reverse.
System default operation: Alarm. System operation is configurable.
Troubleshooting
•
Check the sequence of the input cables.
10.3.8 Fault Code 8 - Output Overcurrent (Software Fault)
Cause
The output current is higher than 150% of the rated current.
System default operation: Coast stop. System operation is configurable.
Troubleshooting
•
Check the output current.
•
Check the set value.
10.3.9 Fault Code 9 - Output Overload
Cause
Constant torque: When the output current is higher than 150% of the rated current, allow for 1 minute overload every 10 minutes.
Variable torque: When the output current is higher than 120% of the rated current, allow for 1 minute overload every 10 minutes.
Danfoss A/S © 2021.06
Fault Tracing
AQ363633621020en-000201 / 172F3117 | 95
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