FEC AFC1200 - Manual (Page 6)

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9.1.6 Failure to fasten
<ERROR DESCRIPTION >THE System power on initialization is completed, but the
System is not responding to fastening commands from the station control.
<CHECK ITEM>
1. Check for Abnormal indicators or messages. If an Abnormal is present, then reference the
appropriate Section of Chapter 9, correct the Abnormal, and attempt to fasten again.
2. Verify that the Axis Units are set to the NORMAL mode. If they are set to IN BYPASS,
they will not respond to input signals.
3. Verify that the READY message appears in the upper right hand display of the Fastening
Data screen. If the STOP message appears, it indicates that the Main Controller Unit
STOP input signal (normally closed) is not being received from the PLC, and the System
will not operate. Determine the cause of the problem, and take appropriate action.
4. If the READY message is present and the problem still exists, attempt to operate the
System through the manual control pushbuttons on the front of the ISA Main Unit. If the
System functions normally with the manual controls, then the problem may be located in
either the station control or the Multi2 board input circuits. Verify station control signal
outputs.
5. Confirm that Sequence Setup has been completed. (Refer to Section 7.5 Set Sequence)
6. Confirm that the ISA Main Unit input power remains constantly within specifications:
200~230 VAC +/- 10%, 50/60 Hz, single phase.
7. Verify that all ISA Main Unit and Axis Unit cables are free from damage and are properly
connected.
8. If the problem persists, replace the entire ISA Main Unit with one that is known to be good.
(Refer to Section 8.3.1)
9. If the problem still exists, replace the Axis Unit(s). (Refer to Section 8.3.3)
Chapter 9: Troubleshooting
Page 9-6