
B–65162E/03
10. INTERFACE SIGNALS
369
Orientation command
CRCMA
1
1
1
0
0
Pulling off
Tool
move
1
0
OFF
Orientation complete signal
ORARA
Spindle unclamp
Tool change operation
Excitation interception
Tool catch
Detachment
Attach-
ment of
new tool
MRDYA
Machine ready signal
ON
OFF
D When the following four conditions hold, the spindle motor starts a
normal rotation corresponding to the speed command (positive value).
- Emergency stop signal
*ESPA is 1
- Machine ready signal MRDYA is 1
- Normal rotation command signal SFRA is 1
- Contact signal ESP is connected to 24 V (at CX4 of the PSM)
D While SFRA = 1, the spindle motor rotates in an counterclockwise
direction (CCW) viewed from the shaft side according to the
commanded speed (positive value).
D If SFRA = 0 occurs, the spindle motor stops by the regenerative
braking. After stopping, it cuts the power supply to the spindle motor
by intercepting the transistor excitation signal.
Timing chart
10.2.5
Normal Rotation
Command Signal
(SFRA)