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 1500 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 AFC1500 Software package in the Monitor mode will allow detailed inspection of the reject cause.  The other method is using the Axis Unit Display Unit attached to the rejected spindle.  Follow the instructions below.

From section 7.1.2 of the manual.
FASTENING INDICATORS

• POWER LED (Yellow).

Indicates when the Axis unit is turned on.

• BUSY LED (Orange).

Indicates when the Axis unit is performing a fastening or reverse operations. Also blinks if it is in Reverse operation.

• SERVO LED (Red).

Indicates if a fault occurs in the servo section of the Axis unit.

• 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.

• REJECT LED (Red).

Indicates when the fastening results are out the defined limits.

• BYPASS LED (Red). MOUNTED IN BYPASS SWITCH.

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

From section 7.2.3 of the manual.
FASTENING RESULTS DISPLAY MODE.

In fastening results display mode (when [D-NO] shows _0 ~ º5), data can be obtained by pressing the [up] and [down] keys to scroll [D-NO] until the desired DATA item is displayed. The following information will be displayed in the [DATA] display section for the displayed [D-NO]:

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