Visual feedback of EI8C, EI8R built-in encoders

Off

Encoder not supplied or defective

Permanently green

Encoder operational, no faults

Red/orange, permanent or flashing

Encoder reports self-diagnostic information or a fault.

The meaning depends on the color and the frequency.

Red

Encoder diagnostics has detected a fault.

Permanently lit: Fault regarding the internal encoder sensors (incremental sensors)

Flashes 5 Hz: Fault regarding the internal encoder sensors (index sensors):

• Check the encoder and pole ring for damage or magnetizable contamination. Replace or clean the fan if necessary.
• Check the fan to ensure it is seated correctly and check the distance between the pole ring and encoder. If necessary, adjust and secure the fan and pole ring (see chapter Removing and mounting built-in encoder EI8.).

Flashes 1 Hz: Fault regarding the encoder module electrical interface:

• Short circuit/overcurrent of the signal tracks: Eliminate the short circuit or limit the output current of the encoder module.
• Interference on the signal tracks: Eliminate the external interference. Observe the information regarding connection technology.

Orange

Encoder diagnostics signals a warning (function of the encoder is given, maintenance may be required).

Permanently lit: Warning regarding the internal encoder sensors (incremental sensors).

• If necessary, implement any necessary measures; see "Diagnostics red" as maintenance measures.

Flashes 1 Hz: Warning regarding the internal memory (encoder signal correction).

• The encoder signal correction is reinitialized every time the encoder is started.