Omron CS1W-MC221 - 02-2008 Operation Manual page 206

System Parameters
Origin Search Methods
Phase Z Detection
Direction
Origin Search Start
Direction
Origin Deceleration
Method
CW/CCW Deceleration
Method
Origin Proximity Logic
Wiring Check ON/OFF
between –39,999,999 and +39,999,999 pulses. Set the limits so that 0 is
included when performing origin searches. If the Axis Mode is set to the
Unlimited Feed Mode, then these two parameters will indicate the present
position display range. Refer to 6-20 Unlimited Feeding for more details.
Refer to SECTION 9 Establishing the Origin for more details on origin
searches. Select one of the following operating methods (modes) for the ori-
gin search.
Mode
Set origin at power ON The position of the motor when power is turned ON is
automatically defined as the origin.
Reverse Mode The motor is reversed if a limit input signal goes ON before
the origin proximity input signal is received.
1 direction Mode The origin search is performed in the direction set by the
origin search direction parameter. An error will occur if a
limit input signal goes ON before the origin proximity input
signal is received.
The default setting is Reverse Mode.
This parameter sets the Phase Z detection direction during origin searches.
Refer to SECTION 9 Establishing the Origin for more details.
The default setting is the positive (+) direction.
This parameter sets the start direction for origin searches. It specifies the
same direction as phase Z detection or the opposite direction of phase Z
detection. Refer to SECTION 9 Establishing the Origin for more details.
The default setting is the same direction as phase Z detection.
This parameter sets the input signal(s) used to switch from high-speed to low-
speed origin search when a search is executed. It also selects whether to use
the origin proximity input signal or to use the limit input signal as the original
proximity input signal.
The default setting is to use the origin proximity input signal. If the origin prox-
imity input signal is not used, select use the limit input signal as the origin
proximity input so the limit input signal will be used as the origin proximity
input.
This parameter sets the deceleration method used if a limit input signal is
detected when an origin search is executed.
It specifies using pulses accumulated in the error counter to stop or deceler-
ate to a stop as the deceleration method used when an limit input signal is
detected. The following figure shows that speed will change dramatically in
reverse if error counter is used to stop. Refer to SECTION 9 Establishing the
Origin for more details.
Speed
The default setting is to use the error counter.
This parameter specifies whether the original proximity input signal is nor-
mally open or normally closed and it must be set when the origin proximity
input signal is used. The default setting is normally open.
This parameter specifies whether a wiring check is to be performed when the
servo is locked initially after the power is turned ON. The wiring check function
outputs a predetermined number of pulses in a predetermined direction and
checks whether the correct number of feedback pulses is received. The
default setting is ON.
Description
The speed changes dramatically
when using error counter to stop.
Time
Section 3-3
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