Danfoss VACON NX All-in-One Application Manual page 332

VACON® NX All-in-One
Application Guide
11.1.28 Fault 8 - System fault, Subcode S36 - OPTAF: Undervoltage
Cause
OPTAF supply voltage hardware problem detected.
Troubleshooting
Change the OPTAF board.
11.1.29 Fault 8 - System fault, Subcode S37 - OPTAF: Test pulse is not detected in both STO chan-
nels
Cause
Single hardware problem detected in Safe Disable inputs.
Troubleshooting
• Change the OPTAF board.
• Change the control board.
11.1.30 Fault 8 - System fault, Subcode S38 - OPTAF: Test pulse is not detected in STO channel 1
Cause
Single hardware problem detected in Safe Disable inputs.
Troubleshooting
• Change the OPTAF board.
• Change the control board.
11.1.31 Fault 8 - System fault, Subcode S39 - OPTAF: Test pulse is not detected in STO channel 2
Cause
Single hardware problem detected in Safe Disable inputs.
Troubleshooting
• Change the OPTAF board.
• Change the control board.
11.1.32 Fault 8 - System fault, Subcode S40 - OPTAF: ASIC trip ETR is not set, even if STO channel 1
is active
Cause
Single hardware problem detected in Safe Disable inputs.
Troubleshooting
• Change the OPTAF board.
• Change the control board.
11.1.33 Fault 8 - System fault, Subcode S41 - OPTAF: STO channels are not active when the thermis-
tor trip is active
Cause
Single hardware problem detected in the thermistor input.
Troubleshooting
Change the OPTAF board.
11.1.34 Fault 8 - System fault, Subcode S42 - OPTAF: Test pulse low is not detected on thermistor
Cause
Single hardware problem detected in the thermistor input.
Troubleshooting
Change the OPTAF board.
11.1.35 Fault 8 - System fault, Subcode S43 - OPTAF: Test pulse high is not detected on thermistor
Cause
Single hardware problem detected in the thermistor input.
332 | Danfoss A/S © 2023.02
Fault Tracing
AB296635287482en-000301 / DPD00903