Haas Alarm: 956 – APC-LIFT FRAME UP TIMEOUT – Haas Mill

Haas Alarm: 956 (M) APC-LIFT FRAME UP TIMEOUT – The pallet changer was commanded to lift but the up position switch was not contacted before the timeout period. The primary cause of this alarm is insufficient air pressure or air volume. Also, verify the pallet is unclamped and there are no obstructing objects. Check pallet up switch and wiring for damage, switch connections for positive electrical contact, and the lifting mechanism for proper operation. Verify Parameter 321 is correct. After determining and correcting the problem, press Tool Changer Restore to enter pallet changer recovery, recover the pallet changer, and then continue operation.

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