Fig 6.26 Example Of Electronic Gear Setting (Ball Screw); Fig 6.27 Example Of Electronic Gear Setting (Belt+Pulley) - OE Max Controls CSDJ Plus User Manual

6.7 Electronic Gear
Only apply in position control mode.
Outline and setting of electronic gear are as follow.
- The electronic gear function enables the motor travel distance per position input command
pulse to be set to any value. It allows the host controller to perform control without having
to consider the machine gear ratio and the number of encoder pulses.
Electronic gear is set in SEt-36, SEt-37.
Parameter
Parameter
Name
Electronic
SEt-36 Gear Ratio
Numerator
Electronic
SEt-37 Gear Ratio
Denominator
- For example, if the machine gear ratio is 1:1 and setting value of SEt-36 and SEt-37 is the
Factory setting value, the motor rotates once when host controller sends 2048 pulses. Here,
if you want to rotate the motor once when host controller sends 1000 pulses. Set the Set-
37 to 1000.
Encoder Pulse : 2048
To move the load 10mm per 1 motor rotation
10㎜
= 5000 Pulse
2 ㎛
Thus, setting value for electronic gear is
SEt-36 = 2048 (Number of pulse per 1
motor rotation), SEt-37 = 5000.

Fig 6.26 Example of Electronic Gear Setting (Ball Screw)

When moving 100㎛ by 1 pulse of external
command
Command Unit =
setting value of electric gear ratio is,
Motor encoder pulse number
×Machine gear ratio
Command Unit

Fig 6.27 Example of Electronic Gear Setting (Belt+Pulley)

Setting
Range
Number of pulse per 1 motor rotation ×Machine
gear ratio of load and motor shaft.
1~65535
Number of position command pulse per 1 rotation of
load shaft.
LOAD
Load Shaft
Machine gear ratio 5 : 1
Motor encoder pulse number : 2048
Load movement amount per 1 load shaft rotation
Minimum movement unit of load
2048×5
=
1570
Chapter 6. Basic Functions 6 - 31
Description
Minimum unit to move the load
(Unit of load to be moved per 1 input command pulse)
Ball Screw
Pitch=10mm
Minimum unit to move the load =100㎛
LOAD
=
10240 1024 Setting value of SEt-36
= = =
Setting value of SEt-37
1570 157
Factory
Setting
2048
2048
= 2 ㎛
Pulley Ψ : 50㎜
3.14×50㎜
= 1570
100㎛