2
Fault list – safety technology
Fault 13 Encoder 1
Manual – Fault Descriptions MOVISAFE
®
CS..A
11
Subfault: 13.66
Description: No position code visible
Response: FS – warning
Cause
Measure
Optical encoder cannot decode valid barcode/
matrix code in field of view.
– Check the code tape for damage (e.g. gaps,
covering, contamination, reflecting materials, or
ambient light sources).
– Check the optical system of the encoder for
damage or dirt.
– Check diagnostic data indicating faulty as-
sembly.
– Check the encoder for proper mounting, such
as distance to the code tape, lateral offset or
twisting.
– To make the system more robust, increase the
value of the "Threshold for tolerated faults – PXV
encoder".
– If the fault occurs repeatedly, replace the en-
coder and send it to SEW‑EURODRIVE together
with the fault number. For further support, contact
SEW‑EURODRIVE Service.
Subfault: 13.67
Description: SSI encoder – warning
Response: FS – warning
Cause
Measure
SSI encoder signaled a warning.
– Check the startup parameters.
– Check the settings on the SSI encoder.
– Check the wiring.
– Check interference sources (light beam inter-
rupted, reflector, signal cables, etc.).
– Replace the encoder.
INFORMATION
In "Emergency mode" manual mode, you can
move the drive even with a faulty external posi-
tion encoder.
Subfault: 13.68
Description: Internal fault – overflow
Response: FS – warning
Cause
Measure
Overflow detected during internal calculation.
Adjust startup parameters, such as numerator
scaling/denominator scaling.
27799182/EN – 10/2022