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Mitsubishi Electric RD77MS2 User Manual Page 30

Melsec iq-r simple motion module.
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[Pr.304] Servo input axis rotation direction restriction
Set this parameter to restrict the input movement amount for the servo input axis to one direction.
This helps to avoid reverse operation caused by machine vibration, etc. when "Real current value" or "Feedback value" is
used as input values.
Setting value
0: Without rotation direction restriction
1: Enable only for current value increase direction
2: Enable only for current value decrease direction
The input movement amount in the reverse direction of the enabled direction accumulates as a rotation direction restricted
amount, and will be reflected when the input movement amount moves in the enabled direction again. Therefore, the current
value of servo input does not deviate when the reverse operation is repeated.
The rotation direction restricted amount is set to 0 when the following operations are executed for the servo input axis.
• A servo amplifier is connected
• The home position return is executed
• The current value is changed
For "1: Enable only for current value increase direction" is set in "[Pr.304] Servo input axis rotation direction restriction".
Speed before rotation
direction restriction
[Md.301] Servo input axis speed
(Speed after rotation
direction restriction)
[Md.303] Servo input axis
rotation direction
restriction amount
2 INPUT AXIS MODULE
2.1 Servo Input Axis
Details
Rotation direction restriction is not executed.
Enable only the input movement amount in the increasing direction of the
servo input axis current value.
Enable only the input movement amount in the decreasing direction of the
servo input axis current value.
The input movement amount is accumulated as a rotation
direction restricted amount, and will be reflected when
the input movement amount in the enabled direction.
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