Okuma Alarm-B 2706 Polygon cutting command condition
Polygon cutting ON/OFF command (M221/M220) is given when the conditions for polygon cutting are not satisfied.
1->Spindle zero speed signal is not input.
2->Spindle in-stop signal is not output.
3->Spindle rotation command is active.
4->The M-tool spindle rotation command (SB command) is active.
5->The M-tool spindle is rotating.
6->C-axis is in the jointed state.
7->During M221 – M226 polygon cutting command execution, other polygon cutting mode is directly designated without designating cancel command (M220).
8->A polygon cutting command is designated in the M241 (M-tool spindle; 1st range) mode.
9->The main spindle chuck and the pickoff chuck are closed.
10->In ATC specification, flat turning instruction was performed by the state which milling tool station does not have divided.
11->It is in spindle extreme low speed rotation mode.
12->It is in Main spindle low speed acceleration mode.
13->Turret does not clamp.
14->Any of M220 to M226 commands was issued at the G14(saddle B) side.
15->The G14 (saddle B) side was in synchronous cutting rotation mode.
17->In synchronous hobbing mode.
Probable Faulty Locations
3)Due to incorrect EC input status, representing the spindle rotation condition, the spindle rotation condition cannot be judged correctly.
4)The spindle or the M-tool spindle is forcibly rotated by an external factor.
M03 S500 M221 :
Measures to Take
1)Correct the program.
2)Check the M-tool spindle speed.