Okuma Alarm-A 1740 Chuck open/close interlock
A chuck open/close command (M83, M84) was issued while the spindle or M-tool was in rotation.
Chuck open/close was attempted with the external interlock signal ON (only when the loader is provided as an option).
Object
SYSTEM
Code
1->No spindle zero speed signal
2->The spindle is not at a still. (5[1/min] or higher)
3->Spindle rotation command is ON.
5->No M-tool spindle zero speed signal
6->The M-tool spindle is not at a still.
7->M-tool spindle rotation command is ON.
A->C-axis is rotating.
B->M83 or M84 command was given while the O.D. centering chuck is unclamped.
12->Chuck unclamp was attempted while the lower turret was not in the home position (workpiece load/unload position).
13->A command for clamping/unclamping tailstock or chuck was issued during spindle rotation.
14->A command for clamping tailstock or chuck was issued with the tow-along unit connected.
15->Chuck clamp/unclamp command and chuck high/low pressure command were executed at the same time.
16->Chuck high/low pressure command was executed during spindle rotation.
17->A chuck unclamp instruction was done at the time of a tailstock spindle advanced state.
18->A chuck open/close command was issued when tailstock was not advanced.
20->The air chuck selector switch was turned on while the hydraulic chuck was not open.
31->A chuck open/close command was issued while the signal for confirming that the index chuck grip detector is in retract position was OFF.
32->During chuck open/close operation, the signal for confirming that the index chuck grip detector is in retract position went OFF.
33->At Teikoku combination chucks, a CLOSE command occurred at one chuck when the other chuck was not OPEN.
34->By combination chuck made of WOODWORTH , when chuck was not open condition, it did workpiece clamp instructon M83 (chuck advance / chuck close).
35->The OD grip chuck (3-jaw) was closed/opened with the mandrel chuck open.
36->A 3-jaw close command (M483) was issued when the tool was entering the chuck barrier.
40->A chuck open/close command was issued by the loader when the spindle was rotating with the ceiling door open.
41->A chuck open command was issued when the spindle was rotating at a speed exceeding the limit specified by the
parameter with the ceiling door open and a chuck interlock release command pending.
42->A chuck open command was issued when the spindle was rotating at a speed exceeding the limit specified by the parameter with the front door open and a chuck interlock release command pending (for optional chuck interlock release types).
43->A finger chuck clamp command was issued with the centering chuck not clamped.
44->An ejector advance command was issued when both the centering and finger chucks are not unclamped.
45->A centering chuck clamp command was issued when the ejector is not retracted.
46->A chuck close command was issued when the workpiece pusher not at the retract end.
47->A finger chuck high/low pressure command was issued with the finger chuck not clamped.
48->A chuck clamp instruction was done at the time of a tailstock spindle retracted state.
49->A tailstock chuck command was issued while the spindle was in rotation.
50->Chuck open/close command was issued when chuck inside diameter griping selected at specification only for chuck outside diameter griping.
51->The chuck open or close command is designated when the touch setter is not at the retract end.
52->A collet chuck unclamp command was issued when the collet chuck is not advanced.
53->A collet chuck advance/retract command was issued when the collet chuck is not unclamped.
54->A finger chuck unclamp command was issued while the spindle was in rotation.
55->A locater advance/retract command was issued while the spindle was in rotation.
56->A chuck close signal is turned off during tailstock moving.
57->A finger chuck unclamp command was issued during turret indexing.
58->A finger chuck unclamp command was issued when the turret has not located an ordered position.
59->Error of magnet chuck was detected.
60->The opposite command was issued when the magnet chuck moved.
61->The magnet level command was issued when the magnet chuck was not clamped.
62->The command of magnetic force down was issued.
63->A collet chuck open/close command was issued while the collet chuck effective switch was sat OFF.
64->A collet chuck open/close command was issued while the finger chuck was not clamped.
65->A collet chuck open/close command was issued while the spindle was in rotation.
66->The chuck high/low pressure command was issued when the pressure of chuck grip was auto change mode.
67->A chuck open command was issued when the clamper close state.
68->Chuck unclamp command is designated while the spindle is not at the specified position.
69->The chuck stopper advance/retract command was issued when the Tailstock spindle is not retract end.
70->The chuck stopper advance/retract command was issued when the chuck is not unclamped.
71->During the chuck stopper advance/retract operation, the Tailstock advance command or the chuck close command were issued.
72->The stopper advance command was issued when the chuck is not clamped.
73->A collet chuck advance/retract command was issued while the spindle was in rotation.
74->A finger chuck open/close command was issued when the collet chuck is not retracted.
75->A chuck unclamp command was issued when CHUCK CENTER was advanced.
76->A workpiece clamp/unclamp command was issued when chuck clamp unit was not clamped.
77->A chuck clamp unit clamp/unclamp command was issued when workpiece chuck was not opend.
78->Chuck clamp command is designated while the spindle is not at the specified position.
79->The chuck stopper advance/retract command was issued when the chuck is not unclamped and not clamped.
80->A tailstock chuck open/close command was issued while the M-tool spindle was in rotation.
81->A tailstock chuck open/close command was issued while the C-axis was in rotation.
82->A tailstock chuck open/close command was issued by the loader when the spindle was rotating with the ceiling door open.
83->Chuck close/open command was issued when NC tailstock was between retract position and shelter position.
84->On the machine with manual grind mode specification, chuck clamp/unclamp command were excuted, when manual grind mode was selected.
200->The pressure check PS failed to come ON within the parameter-set time after the chuck close command was issued.
201->While the chuck is closed, the pressure check PS went OFF.
202->The front air chuck unclamp confirmation signal is OFF.
203->The front air chuck clamp confirmation signal is OFF.
204->Spindle position is out of area for air chuck clamp.
205->The rear air chuck unclamp confirmation signal is OFF.
206->The rear air chuck clamp confirmation signal is OFF.
Probable Faulty Locations
1)[Code]3, 6, 7->Operation error
2)[Code]1, 5->Spindle control unit is defective.
3)[Code]2->Spindle is rotating by inertia.(5[1/min] or higher)
Measures to Take
1)[Code]3, 6, 7->Open/close the chuck after designating the spindle and M-tool spindle stop command.
2)[Code]1, 5->Check the spindle control unit printed circuit boards and connectors.
3)[Code]2->Designated the command only after the spindle has stopped completely.
4)[Code]20->Turn off the air chuck selector switch and release the alarm by NC reset. Then, issue the hydraulic chuck open command to open the hydraulic chuck and turn on the air chuck selector switch again.
5)[Code]55->Advance/retract the locater after designating the spindle and M-tool spindle stop command.