Kegel FLEX 17-5701, Operator'S Manual

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Normally this approach error occurs when Input 1CH 05 fails to receive a signal within 1.5
seconds of the motor starting.
Problem
:
7-pin Approach Motor runs but gives an error.
Possible Cause:

Sensor has failed.

Bad connection between sensor and PLC.

Chain is broken that drives sensor target.

Main drive chain to rear wheel is off.

Sensing target is loose or has fallen off.
Problem
:
7-pin Approach Motor does not run, menu to MOVE MACHINE screen to test motors.
Possible Cause:
 Drive motor has failed.
 CR2 (ZTR Enabling Relay) is loose in socket base or failed.
 CR1 (Directional Relay) is loose in the socket base.
 Fuse is blown.
 The Motor Drive Board has a fault; check error code for drive board. Turn the
machine off for a few seconds and then back on to see if the fault resets.

The motor is unplugged.

Make sure CR3 is seated properly in its socket base.

Check 10-pin Whisker Switch.