Mitsubishi MELSEC-Q Series User Manual page 208

11
AUXILIARY FUNCTION
(2) Hardware stroke limit wiring
Note) Wire the limit switch installed in the current feed value increase direction and the limit
switch installed in address decrease direction as as upper limit and lower limit,
respectively. If the limit switches are wired oppositely, the hardware stroke limit function
does not operate normally and the motor does not stop.
(3) Precautions during control
(4) When not using the hardware stroke limit function
11
- 10 11.5 Hardware Stroke Limit Function
To use the hardware stroke limit function, wire the terminals of the QD72P3C3 upper
limit/lower limit signals as the figure below. (When "upper limit/lower limit signal input
logic selection" in "intelligent function module switch setting" are default values)
QD72P3C3
Figure 11.5 Wiring when using the hardware stroke limit function
(a) When the workpiece stops at out of controllable range for the QD72P3C3 (outside
of the upper limit/lower limit switch) or is stopped by the hardware stroke limit
detection, "OPR control" and "positioning control" cannot be started.
To resume control, move the workpiece to in the controllable range of the
QD72P3C3 with "JOG operation".
(b) If "upper limit/lower limit logic selection" in "intelligent function module switch
setting" are default values, the QD72P3C3 cannot perform positioning control
when between FLS (upper limit signal) and COM or RLS (lower limit signal) and
COM is open (including the case when they are not wired).
When not using the hardware stroke limit function, wire the terminals of the
QD72P3C3 upper limit/lower limit signals as the figure below.
(When "upper limit/lower limit signal input logic selection" in "intelligent function
module switch setting" are default values)
QD72P3C3
Figure 11.6 Wiring when not using the hardware stroke limit function
FLS
RLS
COM
24V DC
FLS
RLS
COM
24V DC