FEC AFC1100 - Manual (Page 8)

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9.6 Servo Amplifier Response / Encoder
9.6.1 code 5-0 servo amplifier reply error / no reply from encoder
The controller is trying to turn the tool assembly, but is not receiving any angle count back
from the encoder to indicate that the tool is actually turning.
This abnormal is caused from only 4 items.
1. The motor cable is damaged or not connected
2. If the encoder cable is damaged.
3. When the encoder, motor, or the controller malfunctions.
4. If there is excessive binding in the fastener, transmission, or the spindle assembly.
RECOVERY:
1. Verify that the motor cable is connected and not damaged.
2. Connect all spare tool cables to the existing tool.
3. Exchange tool and/or controller with known working units. Reinitialize the system after
exchanges, noting any change in the location of the abnormal.
4. Inspect and correct any binding in the spindle assembly, transmission or fasteners.
Chapter 9: Troubleshooting (Rev. 8/98)
Page 9-8