GSK 980MDc, User Manual

Page: 432 / 473

Appendix
413
Appendix
● Note: instruction setting non-zero speed output to spindle, NC turns F1.4 to 1; when speed instruction
is 0, then the ENB signal is set 0. In analog spindle, spindle motor will rotate in a low
speed in spite of NC outputs instruction 0 to the spindle (namely, analog voltage is 0V),
because the frequency converter has a drift voltage. Under this condition, ENB signal can
used to stop spindle motor.
●
Signal Address:
F38 ENB2
F1 ENB
Gear select signalGR1, GR2 (G28.1, G28.2)
The 2
nd
spindle gear select signal (GR21, GR22, G29.0, and G29.1)
● Signal Type: PLC → CNC
● Signal Function: This signal informs CNC the current chosen gear-stage, for specific action to see
previously described
●
Signal Address:
G29
GR22 GR21
G28
GR2 GR1
S12-bit code signal R01O~R12O (F036.0~F037.3) R01O2~R12O2 (F236.0~F237.3)
● Signal Type: NC → PLC
● Signal Function: This signal changes spindle speed instruction value computed by NC spindle control
function into data 0
～
4095 and outputs the results to PLC. The relationship between 10V
voltage and S 12-bit code is as follows:
● Signal Address:
F36
R08O R07O R06O R05O R04O R03O R02O
R01O
F37
R12O R11O R10O R09O
F236
R08O2 R07O2 R06O2 R05O2 R04O2 R03O2 R02O2
R01O2
F237
R12O2 R11O2 R10O2 R09O2
Spindle speed arrival signal
Spindle speed arrival signal SAR (G29.4) is input signal, condition of the CNC starts cutting feed.
Usually when spindle comes to an appointed speed, it is used to start the cutting feed. At this moment,
sensor is used to detect spindle speed, which sent to NC by PLC.
When editor PLC program is handling spindle speed arrival, the spindle speed change instruction and
cutting feed instruction issued at the same time, the CNC will start cutting feed, according to the former
SAR signal before the spindle speed changes. To avoid this problem, after issuing S instruction and cutting
feed instruction, it is need that to take a delay monitoring of the SAR signal, delay time set by data
parameterNO.3740.
To use SAR signal, set the corresponding bit parameter first.
Spindle speed arrival signal SAR (G029.4):