Danfoss VACON NXS Series Operating Manual page 205

Operating Guide | VACON® NXS/NXP Air-cooled
Troubleshooting
Change the OPTAF board.
12.10.26 Fault 8 - System fault, Subcode S35 - OPTAF: Overvoltage
Cause
OPTAF supply voltage hardware problem detected.
Troubleshooting
Change the OPTAF board.
12.10.27 Fault 8 - System fault, Subcode S36 - OPTAF: Undervoltage
Cause
OPTAF supply voltage hardware problem detected.
Troubleshooting
Change the OPTAF board.
12.10.28 Fault 8 - System fault, Subcode S37 - OPTAF: Test pulse is not detected in both STO
channels
Cause
Single hardware problem detected in Safe Disable inputs.
Troubleshooting
• Change the OPTAF board.
• Change the control board.
12.10.29 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.
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Specifications
AQ275638903263en-000301 / DPD00910| 205