When The Hardware Stroke Limit Function Is Not Used - Mitsubishi Electric QD77MS User Manual

POINT
Wire the limit switch installed in the direction to which "Feed current value"
increases as upper limit switch and the limit switch installed in the limit switch
installed in the direction to which "Feed current value" decreases as lower limit
switch.
If inverting the install positions of upper/lower limit switches, hardware stroke limit
function cannot be operated properly. In addition, the servomotor does not stop.
The increase/decrease of "Feed current value" and the motor rotation
direction/movement direction can be changed by the parameters depending on the
servo amplifier. Refer to the servo amplifier instruction manual for details.
[3] Precautions during control
(1) If the machine is stopped outside the Simple Motion module control range
(outside the upper/lower limit switches), or if stopped by hardware stroke
limit detection, the starting for the "OPR control", "major positioning control",
and "high-level positioning control" and the control mode switching cannot
be executed. To carry out these types of control again, return the workpiece
to the Simple Motion module control range by a "JOG operation", "inching
operation" or "manual pulse generator operation".
(2) When "[Pr.22] Input signal logic selection" is set to the initial value, the
Simple Motion module cannot carry out the positioning control if FLS (limit
switch for upper limit) is separated from DICOM or RLS (limit switch for
lower limit) is separated from DICOM (including when wiring is not carried
out).

[4] When the hardware stroke limit function is not used

When not using the hardware stroke limit function, set the logic of FLS and RLS
to the "negative logic" (initial value) with "[Pr.22] Input signal logic selection" and
input the signal which always turns ON. Otherwise, set the logic of FLS and RLS
to the "positive logic" with "[Pr.22] Input signal logic selection" and always turn
OFF the input.
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Chapter 13 Control Sub Functions