Danfoss Vacon OPTEA Operating Manual page 153

VACON® NXP Advanced Safety Options
Operating Guide
12.2.13 Fault Code 20 - Safety System, S12 - General, Fault Number Any
Cause
• Internal fault in the option board.
Troubleshooting
• Reboot the AC drive.
• If the fault reoccurs, contact the nearest distributor.
12.2.14 Fault Code 20 - Safety System, S17 - Comm. Error, Fault Number Any
Cause
• Incompatible control and option board firmware.
Troubleshooting
• Reboot the AC drive.
• Update the control and/or option board firmware.
• If the fault reoccurs, contact the nearest distributor.
12.2.15 Fault Code 20 - Safety System, S18 - External I/O, Fault Number 1
Cause
• Channels of a two channel input are in different state.
Troubleshooting
• Check the cabling.
• Check the connected systems.
• Reboot the AC drive.
12.2.16 Fault Code 20 - Safety System, S18 - External I/O, Fault Number 2
Cause
• One channel caused a short request (input inactive) for a safety function before returning to not requested state (input active).
The other channel did not change.
Troubleshooting
• Check the cabling.
• Check the connected systems.
• Deactivate both channels before activating them again, then acknowledge the safety function.
12.2.17 Fault Code 20 - Safety System, S32 - SafeF Common, Fault Number 3
Cause
• The reset signal has not been accepted because a safe stopping function executed as a violation response has not been
reached.
Troubleshooting
• Allow the safe stopping function to finish its execution.
12.2.18 Fault Code 20 - Safety System, S32 - SafeF Common, Fault Number 4
Cause
• The reset signal cannot be accepted as the speed is above a monitoring limit at requested monitoring function.
Troubleshooting
• Check the requested safety functions.
• Check the motor speed and the speed sensors.
Danfoss A/S © 2021.06
Fault Tracing
AQ319736045637en-000101 / DPD01798 | 153