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11.1.121 Fault 43 - Encoder fault, Subcode S13 - Encoder angle supervision fault
Cause
The estimated shaft position error (estimated angle - encoder angle) is more than 90° electrical.
See variable EstimatedAngleError.
Troubleshooting
Repeat the encoder ID run (absolute encoders).
Check the mechanical mounting of the encoder and make sure that the encoder is not slipping.
Check the encoder ppr number.
Check the encoder cable.
11.1.122 Fault 43 - Encoder fault, Subcode S14 - Encoder estimated missing pulse fault, switch from
the CL ctrl to the OL sensorl
Cause
Problem detected in encoder signals.
Software has detected too many missing pulses in the encoder. Closed loop control is switched to sensorless open loop control.
Troubleshooting
Do a check of the encoder.
Do a check of the encoder cable, cable shield, and grounding of the cable shield.
Do a check of the mechanical mounting of the encoder.
Do a check of the encoder parameters.
11.1.123 Fault 44 - Device changed (different type), Subcode S1 - Control board
Cause
Option board or power unit changed.
New device of different type or different power rating.
Troubleshooting
Reset.
If option board was changed, set the option board parameters again.
If power unit was changed, set AC drive parameters again.
11.1.124 Fault 45 - Device added (different type), Subcode S1 - Control board
Cause
Option board of different type added.
Troubleshooting
Reset.
Set the power unit parameters again.
11.1.125 Fault 49 - Division by zero in application
Cause
Division by zero has occurred in application program.
Troubleshooting
If the fault shows again while the AC drive is in run state, ask instructions from the local distributor.
For an application programmer: do a check of the application program.
11.1.126 Fault 50 - Analogue input Iin < 4 mA (sel. signal range 4 to 20 mA)
Cause
Current at the analog input is < 4 mA.
Control cable is broken or loose
signal source has failed.
It is possible to set different responses in the application for this fault. See parameter group Protections.
AB296635287482en-000301 / DPD00903 | 347
Danfoss A/S © 2023.02
Fault Tracing
VACON® NX All-in-One
Application Guide
Summary of Contents for VACON NX
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