B--63005EN/02
8. AC SPINDLE (SERIAL INTERFACE)
559
(1)For M series, change the upper and lower limits as follows:
When gear change method A is used: Parameter 3736 = 4095,
parameter 3735 = 0
When gear change method B is used: Parameter 3751 = 4095,
parameter 3735 = 0
. For T series, these changes are not required.
(2)Tuning the D/A converter offset
Specify zero as the spindle speed. Then, by using a digital multimeter,
adjust the following parameter so that the voltage at the test pin DA2
on the spindle amplifier printed circuit board is 0 mV.
1 For M series
S0; (Specify the command by MDI operation, then press the cycle start button.)
2 For T series (in case of G--code system A)
G97 S0; (Specify the command by MDI in the same manner as for M series.)
3731 Spindle speed (D/A converter) offset compensation value
(3)Tuning the D/A converter gain
Specify the maximum spindle speed of gear1. Then, by using a digital
multimeter, adjust the following parameter so that the voltage at the
test pin DA2 on the spindle amplifier printed circuit board is 10.0 V.
1 For M series
Sxxxx ; (xxxx is the value set in parameter 3741.)
(Specify the command by MDI operation, then press the cycle start button.)
3741 Max. spindle speed of gear 1 (1 to 9999) [rpm]
2 For T series (in case of G--code system A)
G97 Sxxxx ; (xxxx is the value set in parameter 3741.)
(Specify the command by MDI operation, then press the cycle start button.)
3741 Max. spindle speed of gear 1 (1 to 9999) [rpm]
. Usually a voltage is output from the D/A converter by only
executing an S command. However, the clockwise rotation
command (M03) may be required on some machines.
8.2.1.3
Tuning S analog voltage
(D/A co n verter)