Wecon VD2 SA Series, Руководство пользователя, Страница: 74 / 171

Wecon VD2 SA Series Servo Drives User Manual (Full V1.0)
67 WECON technology Co., Ltd
Step1. Confirm the mechanical parameters including the reduction ratio, the ball screw lead,
gear diameter in the gear drive, and pulley diameter in the pulley drive.
Step2. Confirm the resolution of the servo motor encoder.
Step3 Confirm the parameters such as mechanical specifications, positioning accuracy, etc, and
determine the load displacement corresponding to one position instruction output by the host
computer.
Step4 Combine the mechanical parameters and the load displacement corresponding to one
position instruction, calculate the position instruction value required for one rotation of the load
shaft.
Step5 Calculate the value of electronic gear ratio according to formula (6-3).
Electronic gear ratio =
Encoder resolution
The position instruction (instruction unit) required for the load shaft to rotate one rotation
∗
Reduction ratio (6-3)
(3) Electronic gear ratio switch setting
When the function code [P00-16] is 0, the electronic gear ratio switching function can be used. The
user can switch between electronic gear 1 and electronic gear 2 as needed. There is only one set of
gear ratios at any time. Related function codes are shown in Table 6-19.
Function
code
Name
Setting
method
Effective
time
Defaults Range Definition Unit
P00-16
Number of
instruction
pulses when the
motor rotates
one circle
Shutdown
setting
Power-on
again
10000 0~131072
Set the number of instruction
pulses per rotation of the
motor. When the setting
value is 0, [P00-17]/[P00-19]
Electronic gear 1/2
numerator, [P00-18]/[P00-20]
Electronic gear 1/2
denominator is valid.
pulse
unit
P00-17
Electronic gear
1
numerator
Operation
setting
Effective
immediately
1
1~429496
7294
Set the nominator of
electronic gear ratio
numerator of the 1st group
for position instruction
division/multiplication.
[P00-16] It is effective when
the number of instruction
pulses of one motor rotation
is 0.
-
P00-18
Electronic gear
1
denominator
Operation
setting
Effective
immediately
1
1~429496
7294
Set the denominator of
electronic gear ratio of the
1st group for position
instruction
division/multiplication.
[P00-16] It is effective when
the number of instruction
pulses of one motor rotation
is 0.
-