![background image](http://html1.mh-extra.com/html/omron/sysmac-cj-series/sysmac-cj-series_operation-manual_743585296.webp)
How-to’s
Section 5-1
284
However, the user must be aware that not only the
UNITS
axis parameter
matters in the conversion between encoder counts and user defined units.
Certain Servo Driver parameters and some characteristics of the mechanical
system are also important. The following sections describe which Servo Driver
parameters are important for this conversion. We also give examples of how to
set those parameters and the
UNITS
axis parameter, taking the characteristics
of the mechanical system into account.
5-1-3-1 Conversion between encoder counts and user defined units
Two very important parameters of the Servo Drivers for conversion of encoder
counts into user units are the electronic gear ratio numerator and the
electronic gear ratio denominator. The table below gives these parameters for
the Servo Drivers.
/i
If a servo motor with an absolute encoder is used, setting parameter Pn205
(Multiturn limit) is also necessary.
Parameter Pn202 is the electronic gear ratio denominator (G1). Parameter
Pn203 is the electronic gear ratio numerator (G2). The servo motor rotates
using the value of the position command signal sent by the CJ1W-MCH72,
multiplied by the electronic gear (Pn202, Pn203). On the output (servo motor)
side, the signal is expressed in number of encoder pulses. For more
information on Servo Driver parameters Pn202 and Pn203, see the Sigma-II
Servo Driver manual.
Servo Driver
Numerator
Denominator
Sigma-II
Pn202
Pn203
Sigma-V
Pn20E
Pn210
Junma
Pn20E
Pn210
G-Series
Pn205
Pn206
Accurax G5
Pn009
PN010
Note
The remainder of this section uses the parameters of the Sigma-II Servo Driver, that is,
Pn202 and Pn203. If you use a Sigma-V, a Junma or G-series Servo Driver, you must
use the corresponding parameters.
Trajexia
Servo Driver
MOVE(x)
* UNITS
*Pn202/Pn203
reference_units,
the minimum unit you can set
internally to the servo
driver
encoder_counts,
the ultimate minimum distance
you can recognize and
depends on the encoder
Motor
encoder
Содержание SYSMAC CJ Series
Страница 2: ......
Страница 70: ...Specifications Section 2 4 58...
Страница 84: ...FINS commands Section 3 4 72...
Страница 148: ...All BASIC commands Section 4 2 136 AXIS 1 AXIS 0...
Страница 277: ...Section 265 SECTION 5 Examples This chapter gives 2 categories of examples and tips How to s Practical examples...
Страница 370: ...Section 358...