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12.2.71 Fault Code 20 - Safety System, S80 - HiLevel Comm, Fault Number Any
Cause
Fault in the communication.
Incompatible version of the PC tool.
Interference.
Troubleshooting
Check the used cables and equipment.
Reboot the AC drive.
If the fault reoccurs, contact the distributor near you.
12.2.72 Fault Code 20 - Safety System, S81 - Comm Timeout, Fault Number 3
Cause
Valid F-Parameters from safety PLC have not been received.
Troubleshooting
Check the parameter settings of the safety PLC and of the used fieldbus board.
Make sure that normal fieldbus communication is established.
12.2.73 Fault Code 20 - Safety System, S81 - Comm Timeout, Fault Number Other
Cause
Fault in the communication.
Incompatible version of the PC tool.
Interference.
Troubleshooting
Check the used cables and equipment.
Reboot the AC drive.
If the fault reoccurs, contact the distributor near you.
12.2.74 Fault Code 20 - Safety System, S82 - Plaus. Check, Fault Number 3
Cause
There is no valid parameter file in the option board.
Troubleshooting
Save new parameter file from PC or back-up.
12.2.75 Fault Code 20 - Safety System, S82 - Plaus. Check, Fault Number Other
Cause
Fault in the safety configuration.
There are invalid parameters.
Troubleshooting
Check the used parameter file.
AQ319736045637en-000101 / DPD01798162 | Danfoss A/S © 2021.06
Fault Tracing
VACON® NXP Advanced Safety Options
Operating Guide