Omron XTRADRIVE User Manual page 95

XtraDrive User Manual
5. Set the parameters.
Reduce the electronic gear ratio to lower terms so that both A and B
are integers smaller than 65535, then set A and B in the respective
parameters:
Parameter
Pn202
Pn203
Set the electronic gear ratio according to equipment specifications.
Electronic Gear Ratio =
• B = [(Number of encoder pulses) × 4] × [motor speed]
• A = [Reference units (travel distance per load shaft revolution)] ×
[load shaft revolution speed]
Electronic Gear Setting Examples
The following examples show electronic gear settings for different load
mechanisms.
Ball Screws
Circular Tables
Pn202
 
B
 
 
A
Pn203
Signal
Electronic Gear Ratio
(Numerator)
Electronic Gear Ratio
(Denominator)
XtraDrive
Electronic
gear
B _
Reference
A
input puls e
 
B
 
 
A
5-27
Chapter 5: Parameter Settings and Functions
Electronic Gear Ratio (Numerator)
Electronic Gear Ratio (Denominator)
Setting
Range: 1 to 65535
Default Setting: 4
Range: 1 to 65535
Default Setting: 1
Motor
M
Pn 202
=
Pn 203
Travel distance per load shaft revolution =
6000

=

Electronic gear ratio

Preset
Values
Travel distance per load shaft revolution =

B
=
Electronic gear ratio 

A
Preset
Values
Control Mode
Position Control
Position Control
. 0 24 in
. 0 00004 in

2048 x 4 x 1 Pn
B
= =

 6000 Pn
A
Pn202 8192
Pn203 6000
°
360
= 3600
°
0 1 .

2048 x 4 x 3 Pn 202
= =

 3600 Pn 203
Pn202 24576
Pn203 3600
=
202
203