Instruction Manual
9.8 AFC1200 Axis Unit Fastening Faults and Causes
9.8.1 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, 3rd RATE, and TIME).
9.8.2 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 OFFSet torque is outside acceptable limits.
4. THE final fastening torque is not between the LOW and HIGh TORque limits set on the
PARAMETER Set screen.
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
or YIELD 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, 2nd RATe, or 3rd RATE). IN ANGLe Control or YIEld
Control, this may be caused by reduced friction or increased joint compression.
9.8.3 ANGLE REJECT conditions
THE ANGLe Reject LED will light for the following reasons:
1. A "REd" ANGLE Reject LED on the AXIS UNit indicates a HIGH ANgle reject. THIS type
of
reject is caused when the degrees of rotation the fastener turns after sensing the
THReshold2 (THR2) torque is in excess of the preset HIGH Angle limit as specified on the
PARameter Set screen. MAy cause a LOW TORQue reject.
CAUSES: EXCessive lubrication, thread obstacle, excessive joint compression.
2. AN "ORANge" ANgle display LED on the AXIS Unit indicates a LOW ANgle reject. THIS
type
of reject is caused when the degrees of rotation the fastener turns after sensing the
THREshold2 (THR2) torque is below the preset LOW Angle limit as specified on the
PARAmeter Set screen.
Chapter 9: Troubleshooting
Page 9-31