Near Pass Function - Mitsubishi Electric MELSEC iQ-R Series User Manual

Near pass function

When continuous pass control is carried out using interpolation control, the near pass function is carried out.
The "near pass function" is a function to suppress the mechanical vibration that occurs at the time of switching the positioning
data when continuous pass control is carried out by interpolation control.
[Near pass function]
The extra movement amount occurring at the end of each positioning data unit being continuously executed is carried over to
the next positioning data unit. Alignment is not carried out, and thus the output speed drops are eliminated, and the
mechanical vibration occurring during speed changes can be suppressed.
Because alignment is not carried out, the operation is controlled on a path that passes near the position set in "[Da.6]
Positioning address/movement amount".
Control details
The following drawing shows the path of the continuous path control by the 2-axis linear interpolation control.
■The path of the near pass
[Da.6] Positioning address
Path of positioning
data No.3
V
Positioning data No.3
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Path of positioning data No.4
Drop in speed does not occur.
Positioning data No.4
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8 CONTROL SUB FUNCTIONS
8.2 Functions for Compensating the Control
8
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