GSK DA98B, User Manual

Page: 62 / 88

GSK CNC Equipment Co., Ltd.
50
G
：
electronic gear ratio;
G=dividing numerator / dividing denominator
Recommended range of G is:
50
50
1
≤ ≤
G
N
：
motor rotating circles;
C ： photoelectric encoder lines/rev, in this system C=2500
【
Example 1
】
When input instruction pulse is 6000, and servo motor rotation is 1:
3
5
6000
4 2500 1 4
=
× ×
=
× ×
=
P
C N
G
so parameter PA12 is set for 5 and PA 13 is set for 3.
【
Example 2
】
If the workpiece is required to move 10mm
3) Set servo on(SON) for ON on condition that no alarming and abnormity occurs. The
motor will be actuated for zero speed.
4) Input low frequency pulse to make the motor run in a low speed, and check whether
the motor speed is the setting one. Stop inputting low frequency pulse to see
whether the motor stops. Adjust the parameter if the motor runs in a low speed.
Electronic gear ratio not used
For a 6mm moving in a revolution, it
needs 10÷6 ＝ 1.6666 revolution; as for
2500×4 pulses for a revolution, the
instruction pulse input is
1.6666×2500×4
＝
16666 pulses. And
the operation must be executed in the
upper device.
Electronic gear ratio used
The mechanical condition and
instruction unit must be defined in
advance by electronic gear ratio. If
the instruction unit is set for 1 um,
10mm moving needs
10mm÷1um=10000 pulses.