2
Fault list – safety technology
Fault 20 Device monitoring
Manual – Fault Descriptions MOVISAFE
®
CS..A
34
Subfault: 20.13
Description: Safety card undervoltage DC 3.3 V
Fault class: System error
Cause
Measure
Undervoltage of DC 3.3 V supply voltage detect-
ed.
– Switch the device off and on again.
– If the fault occurs repeatedly, replace the safety
card and send it together with the fault number to
SEW‑EURODRIVE. For further support, contact
SEW‑EURODRIVE Service.
Subfault: 20.14
Description: Safety card overvoltage DC 3.3 V
Fault class: System error
Cause
Measure
Overvoltage of DC 3.3 V supply voltage detected. – Switch the device off and on again.
– If the fault occurs repeatedly, replace the safety
card and send it together with the fault number to
SEW‑EURODRIVE. For further support, contact
SEW‑EURODRIVE Service.
Subfault: 20.15
Description: Safety card DC 12 V encoder supply voltage
Fault class: Encoder fault
Cause
Measure
Upper or lower limit value of DC 12 V encoder
supply voltage exceeded.
– Switch the device off and on again.
– If the fault occurs repeatedly, replace the safety
card and send it together with the fault number to
SEW‑EURODRIVE. For further support, contact
SEW‑EURODRIVE Service.
Subfault: 20.16
Description: Safety card DC 24 V encoder voltage supply
Fault class: Encoder fault
Cause
Measure
Upper or lower limit value of DC 24 V encoder
supply voltage exceeded.
– Switch the device off and on again.
– If the fault occurs repeatedly, replace the safety
card and send it together with the fault number to
SEW‑EURODRIVE. For further support, contact
SEW‑EURODRIVE Service.
27799182/EN – 10/2022