Lite-On Technology Corp.
Industrial Automation
159
The graph shows P Mode. The selection is made by using PA-00. The electronic gear ratio can set in P
Mode to set proper positioning resolution. The command smoothing can be achieved via the low-pass
filter.
Inhibit input (INHP)
INHP must be selected through DI before the function is used. (Refer to PC-01~09.) The function won't
be used if it is not selected in DI. After selection, the calculation of the pulse command signal in the
position mode for control is terminated after the INHP input is on. The motor remains locked.
7.2.3.
Electronic gear ratio
The change of travel ratio can be conducted simply and easily via the electronic gear. Higher
electronic gear ratio usually leads to stepping of the position command. The condition can be
improved by smoothing the ratio through the low-pass filter. If the electronic gear ratio equals 0.5,
the ratio of each two pulses from the command end to the pulse of the motor rotation is 1 pulse.
Relevant parameters:
PA-09
(S-off)
GRM1
Numerator of the Electronic Gear Ratio
(N1)
Communication
address:
0012H
0013H
Initial value
1
Control mode
P
Unit
pulse
Configuration range
1 ~
（
2
26
-1
）
Data size
32bit
Data format
Dec
Multi-step configuration for the numerator of electronic gear ratio.
The numerator of the electronic gear ratio can be selected and switched via these two input
pins: GNUM0, GNUM1. It will be set to PA-09 as default if the two input pins are not
defined. Switch the numerator when the machine stops to avoid vibration during switching.
PA-10
(S-off)
GRD
Denominator of the Electronic Gear
Ratio (M)
Communication
address:
0014H
0015H
Initial value
1
Control mode
P
Unit
pulse
Configuration range
1 ~
（
2
31
-1
）
Data size
32bit
Data format
Dec
The servo motor is easy to rotate violently when there is a configuration error. The setting
