Omron CJ1W-NC271 - 12-2009, Operation Manual

Page: 334 / 687

306
Origin Search Operation
Section 8-2
For details on the acceleration/deceleration operation during origin search,
refer to
7-4 Acceleration and Deceleration Operations .
Origin Search
Operation Modes
The following four modes are available for origin search operation.
Note The parameter numbers shown above are different for G-series Servo Drives.
Select the origin search operation by setting Origin Search Operation in the
Axis Parameters.
0: Reversal mode 1
1: Reversal mode 2
2: Single-direction mode
3: Reversal mode 3 (Can be used only for Position Control Units with unit
version 2.0 or later.)
* If reversal mode 1 is used in the G series, set the Servo Parameter Drive
Prohibit Input Selection (Pn004) to 0 or 1.
Origin Detection method The Origin Detection Method parameter determines how the origin proximity
input signal is used. Any of the following three patterns can be selected in the
Axis Parameters.
1
0
Origin input signal
(Phase Z signal)
Zero point return approach speed 1 (Pn817)
Speed
Stop
Origin search direction
Zero point return approach speed 2 (Pn818)
Final travel distance to return to zero point (Pn819)
Origin search operation Reversal modes The operation is reversed in the direction opposite to
the origin search direction.
Reversal
mode 1 Direction reversed when limit input is input in the
origin search direction.
Reversal
mode 2 Operation is stopped and an error is generated when
limit input is input in the origin search direction.
Single-direction
mode
Origin search is always performed in one direction only.
Reversal
mode 3 The operation is basically the same as that for
reversal mode 2, but shock on the machine is
reduced when reversing at the origin proximity input.
Setting Origin detection method Origin input signal
detection
Remarks
0 With origin proximity input sig-
nal reversal The origin input signal is
detected after the origin prox-
imity input signal turns ON
and then OFF. ---