Omron CJ1W-C113 - REV 02-2008, Operation Manual

Page: 183 / 406

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Origin Search Operation Section 6-4
Note Use a sensor with no chattering, such as a photoelectric sensor, for the origin
proximity input signal when the origin detection method is set to 0 (with origin
proximity input signal reversal) and for the limit signal input in the opposite
direction to the origin search direction when the origin detection method is set
to 3 (limit input signal used instead of origin proximity input signal). Using a
switch with contacts may cause the position of the origin to be displaced due
to chattering.
When origin search is executed, the operation will differ according to whether
or not origin proximity signal is used in the way shown below.
With an Origin Proximity
Input Signal There is no deceleration when stopping from the origin search proximity
speed with the origin input signal.
Without an Origin
Proximity Input Signal The origin search is conducted at low speed (the origin search proximity
speed). There is no deceleration when stopping with the origin input signal.
If the origin search proximity speed is less than or equal to the initial speed,
there will be no acceleration.
Origin Search Direction
This setting determines the direction when detecting the origin input signal.
During origin search, the origin input signal in the direction of the origin search
direction is always being detected.
0: CW direction, 1: CCW direction
Setting Origin detection
method
Origin input signal
detection
Notes
0 With origin proxim-
ity input signal
reversal Origin input signal detected
after OFF
→
ON
→
OFF of
origin proximity input sig-
nal.
---
1 Without origin
proximity input sig-
nal reversal Origin input signal detected
after OFF
→
ON of origin
proximity input signal.
---
2 Origin proximity
input signal not
used The origin proximity input
signal is not used. Origin search is per-
formed at origin
search proximity
speed only. (Refer to
the following dia-
grams.)
3 Limit input signal
used instead of ori-
gin proximity input
signal Origin input signal detected
after ON
→
OFF of limit
input signal in opposite
direction to origin search
direction.
Only possible in sin-
gle-direction mode. If
executed in reverse
modes 1 or 2, an ori-
gin detection method
error (error code
1607) is generated
and settings are not
possible.
Origin search high speed
Acceleration
Initial speed
Deceleration
Origin search proximity speed
Start Stop
Origin search proximity speed
Start Stop
Acceleration
Initial speed