It is most likely related to the ATC itself. A lot of machines have a switch for the ATC arm at a "home position". If this switch is not made it will not allow Z axis movement. Check the electrical prints for the switch and then look at the diagnostic for that switch.
RRL
Thread: ATC ALARM????
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07-21-2008, 07:11 PM #1
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07-25-2008, 12:02 PM #2
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Some of ATC data (D address) may be got wrong value. They indicate that ATC problem and lock Z axis.
If you have ladder diagram you can find out which data that lock Z axis.
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