What is causing the fastening reject I receive from the system?

Fastening rejects occur when final fastening results are outside of the allowable defined preset limits.  These limits are defined/set by the user usually after a detailed study has been done to define these limits. (Such as using the FASTECH function in the AFC Software package)  Rejects indicate a problem with the fastening joint/process NOT with the fastening equipment.  Many factors can affect the fastening joint during fastening to cause the parameters to be outside the acceptable limits such as bad threads, burrs, rust, dirt, bad bolts/nuts, cross threads, gasket material, etc. and the precision with which this equipment can detect these problems is the main reason it is used.

There are two methods to determine the cause of rejects.  Using the AFC Software package in the Monitor mode will allow detailed inspection of the reject cause.  The other method is using the data displayed on the Axis Unit Display.   Follow the instructions below & also see Chapter 7 in the manual under "Fastening Results Data Display".

From section 7.1.2 of the manual.
FASTENING INDICATORS.

• BUSY LED (Yellow).

Indicates when the Axis unit is performing a fastening or reverse operations.

• ABNORMAL LED (Red).

Indicates when an abnormal condition occurs during fastening or during the system SELF CHECK function.

• ACCEPT LED (Green).

Indicates when the fastening results are within acceptable limits.

• BYPASS LED (Red).

Indicates by flashing when the Axis unit is in a bypass condition.

• TORQUE LED (Orange and red).

Orange indication represents a LOW TORQUE REJECT as the fastening result.

Red indication represents a HIGH TORQUE REJECT as the fastening result..

• ANGLE LED (Orange and red).

Orange indication represents a LOW ANGLE REJECT as the fastening result.

Red indication represents a HIGH ANGLE REJECT as the fastening result.

• 1ST RATE LED (Orange and red).

Orange indication represents a LOW 1ST RATE REJECT as the fastening result.

Red indication represents a HIGH 1ST RATE REJECT as the fastening result.

• 2ND RATE LED (2ND RATE).

Orange indication represents a LOW 2ND RATE REJECT as the fastening result.

Red indication represents a HIGH 2ND RATE REJECT as the fastening result.

• TIME LED.

Orange indication represents a 1ST TIME REJECT as the fastening result.

Red indication represents a FINAL TIME REJECT as the fastening result.

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