
B–63523EN–1/03
9. SPINDLE SPEED FUNCTION
1012
The following chart summarizes spindle speed control.
Output to the PMC
(used for ladders)
Switching in the machine
←From the PMC
Machining program, etc.
↓
⋅ Processing for gear change
(S command → spindle motor speed con-
version)
Clamp the speed according to parameters.
⋅ Command output to the
spindle, spindle enable sig-
nal output, gain, and offset
Gear select signal output
(M series)
(GR3O, GR2O, GR1O)
⋅Spindle stop signal/spindle orientation signal
⋅Spindle override signal (*SSTP/SOR, SOV0 to SOV7)
Input the gear select
signal (GR1, GR2).
CNC output specification
(result of speed conversion)
S12 bit code output (R12O to R01O)
Specify output polarity in the CNC.
(M03/M04 and parameter No. 3706 =
TCW, CWM)
Thread cutting,
feed per revolu-
tion, etc.
⋅ Position coder
feedback
signal
Sensors
Input the spindle amplifier
control signal from the
PMC, etc.
⋅ S command
⋅S code/SF signal output .
⋅ Determine the output.
(Selected by the SIND signal)
← Output specification by the PMC
(set to R12I to R01I)
⋅ Determination of output polarity
(Selected by the SSIN signal)
← Polarity specification by the PMC
(set to SGN)
⋅ Control over the
start of cutting
feed.
Input the spindle
speed arrival
signal (SAR).
Monitor the arrival
spindle speed
Spindle
amplifier
Spindle
motor
Position
coder
Gear change
mechanism
Spindle
Mechanical section of the machine
CNC PMC and machine
Output to the PMC
(to change the machine gear).
Output to the PMC
(to be used for ladders).
←From the PMC
←From the PMC
←
Command flow of
spindle speed control