Omron CJ1W-MA - REV 10-2008, Руководство по эксплуатации

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Origin Search Operation Section 8-2
the origin search for the Reversal Mode 1 and Reversal Mode 2 origin
search operation modes. If the origin input signal length is shorter than
the communications cycle, the PCU will be unable to detect the origin in-
put signal when in reversal operation. If the established origin position is
not aligned, the origin search function will not operate correctly. If using
this function with this setting, use an external sensor for the origin input
signal or select an origin search method that uses the origin proximity in-
put signal because the signal width of the Servo Drive's Z-phase signal is
too short.
Reversal Mode Operation
Using Limit Inputs When the origin search operation mode is set to reversal mode 1 to 3, axis
operation stops or changes to the opposite direction when the limit input sig-
nal turns ON.
When using a W-series Servo Drive, the axis will operate according to the
Select Stop when Prohibited Drive Is Input (Pn001.1) setting in the Servo
Parameters after the limit input signal turns ON and until the axis operation
stops.
When using a SMARTSTEP Junior Servo Drive, the Servomotor will deceler-
ate to a stop using the maximum Servomotor torque.
Reverse Pattern
For reversal mode 1, the positioning relationship between the limit input and
the origin proximity signal is as shown by the two patterns in the following dia-
gram. For reversal mode 2 or 3, only the bottom pattern is possible. When
these modes are used, the axis operates according to the
Stop Selection for
Drive Prohibit Input for G-series Servo Drives (Pn066) or Select Stop when
Prohibited Drive Is Input for W-series Servo Drives (Pn001.1) for the shaded
areas in the diagram.
Note If the Servo Parameter (Pn066 for G Series and Pn001.1 for W Series) is set
to stop operation with a free run when a limit input is input when using a G-
series or a W-series Servo Drive, the momentum of the previous operation
may cause the machine to run in the limit input direction. When origin
searches are performed using reversal mode 1 to 3 as the operation mode,
either enable the Servo Drive's dynamic brake, or set the
Stop Selection for
Drive Prohibit Input for G-series Servo Drives (Pn066) or Select Stop when
Prohibited Drive Is Input for W-series Servo Drives (Pn001.1) to 1 (deceler-
ates to a stop using the emergency stop torque set in Pn06E for G Series or
Pn406 for W Series or lower and locks Servo in zero clamp mode) or 2 (decel-
1
0
1
0
1
0
Origin search
direction limit input
Speed
Origin proximity
input signal
Speed
Origin search direction
Origin search direction
Limit input in opposite direction
from origin search direction