Danfoss VACON NXS Series Operating Manual page 228

Operating Guide | VACON® NXS/NXP Air-cooled
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.
12.10.117 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.
12.10.118 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.
12.10.119 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.
228 | Danfoss A/S © 2020.02
Specifications
AQ275638903263en-000301 / DPD00910