Okuma Alarm-A 1727 C-axis ON/OFF command not possible
C-axis connect/disconnect command (M110, M109, M892, M891) is designated under illegal conditions.
1->The spindle is not at zero speed.
2->The spindle is not at a still.
3->The spindle rotation command is active.
4->C-axis is clamped.
5->C-axis is interlocked.
6->The connection command is given to C-axis under the control of the other turret.
7->The spindle is under synchronous control.
8->In extreme low speed rotation mode command is designated.
9->In Main spindle low speed acceleration mode command is designated.
10->While M-tool spindle is rotating
11->In HOB mode command is designed
12->The APC pallet was not clamped.
13->The APC fork was not in down position.
14->The C-axis connection command is executed, when tailstock index pin is not out condition.
15->C-axis connect/disconnect command was done in M-spindle extreme low speed rotation mode.
16->C-axis group number is non-decision, because the APC pallet number is zero or bigger than the number of the pallets.
Probable Faulty Locations
1)Faulty spindle zero speed input
2)Faulty EC input for C-axis connection
3)Connection signal on high-speed connection specification Slave station input CFJ should be “1”.
M110 is designated during spindle rotation in MDI mode.
Measures to Take
Refer to the codes above. When there are no errors in a program or operations, check the related EC input signals.