FEC AFC1100 - Manual (Page 16)

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9.11 AFC1100 Axis Unit Fastening Faults and Causes
9.11.1 Accept Conditions
THE ACCEPT LED will light for the three following reasons:
1. tHE RESET input is active on either the front panel or via a PLC input, and the reset
condition (ZERO LEVEL) of the TRANSDUCER is within acceptable limits.
2. tHE CAL input is active on either the front panel or via a PLC input, and the calibration
condition (CAL LEVEL) of the transducer is within acceptable limits.
3. tHE previous fastening was completed within all preset limits (TORQUE, ANGLE, 1st
RATE, 2nd RATE, and TIME).
9.11.2 Torque Reject Conditions
THE TORQUE Reject LED will light for the following reasons:
1. THE ZERo Level is outside acceptable limits.
2. tHE CAl Level is outside acceptable limits.
3. THE final fastening torque is not between the LOW and HIGh TORque limits set in the
PARAMETERs.
4a. A "RED" TOrque Reject LED on the AXIS unit indicates a HIGH TORQue reject,
which can normally be attributed to excessive speed (crashing). IN ANGLE Control
this may be caused by increased friction or reduced joint compression.
4b. aN "ORANGE" TORQue Reject LED on the AXIS unit indicates a LOW TORque
reject, which was caused by the failure of one or more of the other preset limits
(ANGLE, Time, 1st RATE, or 2nd RATe). IN ANGLe Control this may be caused by
reduced friction or increased joint compression.
Chapter 9: Troubleshooting (Rev. 8/98)
Page 9-16