GSK980MDc Milling CNC System User Manual
408
Appendix
CNC
output
s
adjusted spindle speed output value, in the form of analog voltage, via analog spindle
interface circuit, to spindle frequency converter.
10.3 M Type Gear Shift
This gear shift pattern is valid only in single analog spindle.
To choose M type gear shift, according to data parameter set value and S instruction value, CNC
makes a decision and outputs to PLC that which gear
stage(GR40,GR30,GR2O,GR1O<F034.3,F034.2,F034.1,F034.0>) is needed for the appointed spindle
speed.
After S code outputted , only when CNC issues gear shift instructions to PLC, do CNC output SF
signal.
When there is auto running of any of input instructions S0
~
S9999, CNC outputs spindle motor
rotation instructions, which are corresponding to speed range of the 4 gears pre-set via data parameter, to
spindle motor. At meantime it outputs current gear select signals as well as SF.
The meaning of gear select signal is as follows.
GR10(F34.3) GR10(F34.2) GR20(F34.1) GR10(F34.0) Selective
gear-stage
0 0 0 1 gear-1
0 0 1 0 gear-2
0 1 0 0 gear-3
1 0 0 0 gear-4
To spindle motor analog spindle output speed instructions like this: as to analog voltage 0
~
10V,
output to analog voltage signal SVC.
M type gear shift has two types to choose, set by bit parameter SGB.
SGB: gear shift types:
0: M type gear shift Type A;
1: M type gear shift Type B
The following are examples of the two gear shift.
M type gear shift Type A:
As to the data in the image above, descriptions as follows:
Constant VMax:spindle motor Maximum restraint speed (S12-bit code value), that is data parameter
NO.3736
Summary of Contents for 980MDc
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Page 20: ...1 I Programming Programming Ⅰ ...
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Page 200: ...Chapter 1 Operation Mode and Display 181 Ⅱ Operation ...
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Page 320: ...301 Ⅲ Installation Ⅲ Installation ...
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