Sub Function, Common Function - Mitsubishi Electric MELSEC iQ-F Series FX5 User Manual

4.4

Sub Function, Common Function

Sub function
A summary of the sub functions used in positioning control by the positioning module is described below.
Sub function
Sub functions specific to OPR retry function
machine OPR
OP shift function
Function to compensate Backlash compensation function
control
Electronic gear function
Near pass function
Output timing selection of near pass
control
Function to limit control Speed limit function
Torque limit function
Software stroke limit function
Hardware stroke limit function
Functions that change Speed change function
control details
Override function
Acceleration/deceleration time change
function
Torque change function
Target position change function
Function related to Pre-reading start function
positioning start
Start time adjustment function
Absolute position restoration function
Function related to Stop command processing for
positioning stop deceleration stop function
Continuous operation interrupt
function
Step function
Description
Retries the machine OPR with the upper/lower limit switches during the machine OPR.
This allows the machine OPR to be performed even if the axis is not returned to a position
before the near-point dog with operations such as the JOG operation.
After the machine OPR, this function compensates the position by the specified distance
from the machine OP position and sets that position as the OP address.
Compensates the backlash amount of the machine system. Feed pulses equivalent to the
set backlash amount are output each time the movement direction changes.
By setting the movement amount per pulse, this function can freely change the machine
movement amount per commanded pulse. A flexible positioning system that matches the
machine system can be structured with this function by setting the travel amount per
pulse.
*1
This function suppresses machine vibration during speed changes using continuous path
control during interpolation control.
During continuous path control, this function selects the output timing during the next
positioning data implementation for the difference between the actual positioning end
address and the end address set using the positioning data (Δd).
If the command speed exceeds [Pr.8] Speed limit value during the control, this function
limits the command speed to within the setting range of [Pr.8] Speed limit value.
*2
If the torque generated by the servo motor exceeds [Pr.17] Torque limit setting value
during the control, this function limits the generated torque to within the setting range of
[Pr.17] Torque limit setting value.
If a command outside of the upper/lower limit stroke limit setting range, set in the
parameters, is issued, this function will not execute the positioning for that command.
Performs the deceleration stop with the limit switch connected to the positioning module's
connector for external devices.
Changes the speed during positioning.
Set the new speed in ([Cd.14] New speed value), the speed change buffer memory area,
and change the speed with ([Cd.15]) Speed change request.
Changes the speed during positioning within a percentage of 0% to 300%. Execute this
function using [Cd.13] Positioning operation speed override.
This function changes the acceleration and deceleration time during speed changes.
Changes Torque limit value during the control.
Changes the target position during positioning. The position and speed can be changed
simultaneously.
If the positioning start is requested while Execution prohibition flag is on, no pulse is
output, and when Execution prohibition flag is turned off and detected, outputting pulses
is started within 0.88 ms.
After the start trigger was input with the quick start function, this function starts outputting
pulses after the preset time has passed.
*3
This function restores the absolute position of a specified axis.
Selects a deceleration curve when a stop cause occurs during the deceleration stop
processing to speed 0.
Interrupts the continuous operation. When this request is accepted, the operation will stop
at the completion of the positioning data being executed.
Temporarily stops the operation to check the positioning operation during debugging and
other operation. The operation can be stopped for each Automatic deceleration or
Positioning data.
4 FUNCTIONS LIST
4.4 Sub Function, Common Function
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