Table of Contents
Advertisement
VACON® NXP Advanced Safety Options
Operating Guide
•
Reboot the AC drive.
•
If the fault reoccurs, contact the nearest distributor.
12.2.46 Fault Code 20 - Safety System, S52 – Increm. enc., Fault Number 1
Cause
•
A problem with encoder signal A.
Troubleshooting
•
Check the encoder cabling.
12.2.47 Fault Code 20 - Safety System, S52 – Increm. enc., Fault Number 2
Cause
•
A problem with encoder signal B.
•
Certain encoders can intentionally drive all their inputs to low during start-up or after the detection of a failure.
Troubleshooting
•
Check the encoder cabling.
•
Check if the used encoder can force the signals to an invalid state to indicate a fault.
12.2.48 Fault Code 20 - Safety System, S52 – Increm. enc., Fault Number 3
Cause
•
A problem with encoder reference signal.
Troubleshooting
•
Check the encoder cabling.
12.2.49 Fault Code 20 - Safety System, S52 - Increm. Enc., Fault Number Other
Cause
•
Faults related to the encoder.
•
A wrong phase shift between signals.
•
Discrepancy between different speed sources is too high.
Troubleshooting
•
Check the encoder connections.
•
Check the encoder parameters.
•
Check the encoder.
•
Reboot the AC drive.
•
If the fault reoccurs, contact the nearest distributor.
12.2.50 Fault Code 20 - Safety System, S53 – Prox. sensor, Fault Number 2
Cause
•
A short circuit between the signals of the proximity sensor 1.
Troubleshooting
•
Check the proximity sensor cabling.
12.2.51 Fault Code 20 - Safety System, S53 – Prox. sensor, Fault Number 3
Cause
•
A short circuit between the signals of the proximity sensor 2.
Troubleshooting
•
Check the proximity sensor cabling.
158 | Danfoss A/S © 2021.06
Fault Tracing
AQ319736045637en-000101 / DPD01798
Advertisement
Chapters
Table of Contents
