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Fault list – safety technology
Fault 27 Encoder system
Manual – Fault Descriptions MOVISAFE
®
CS..A
38
Subfault: 27.5
Description: Referencing not completed successfully
Response: FS – warning
Cause
Measure
Encoder system not ready.
– Repeat referencing.
– If the fault occurs repeatedly, contact
SEW‑EURODRIVE Service.
Subfault: 27.6
Description: Encoder process values invalid
Response: FS – encoder fault
Cause
Measure
Error during diagnostics of encoder involved in
calculating a process value.
Check the exact fault in the fault memory and fol-
low the instructions to remedy the fault.
Subfault: 27.7
Description: Discrepancy error absolute position
Response: FS – warning
Cause
Measure
Encoders involved in position calculation signal
different absolute position values.
– Check the tolerance parameters.
– Check the configuration of the drive train.
– Check the system.
Subfault: 27.8
Description: Cross-checking error speed calculation
Response: FS – warning
Cause
Measure
Encoders involved in speed calculation signal dif-
ferent speed values.
– Check the tolerance parameters.
– Check the configuration of the drive train.
– Check the system.
Subfault: 27.9
Description: Discrepancy error relative position
Response: FS – warning
Cause
Measure
Encoders involved in position calculation signal
different relative position values.
– Check the tolerance parameters.
– Check the configuration of the drive train.
– Check the system.
27799182/EN – 10/2022