Mitsubishi Electric MELSEC iQ-F Series FX5 User Manual page 242

Wiring the hardware stroke limit
When the hardware stroke limit function is used, wire the terminals of the FLS (Upper limit signal) and RLS (Lower limit signal)
of the positioning module as illustrated in the following figure. ([Pr.22] Input signal logic selection is initialized)
Positioning module
FLS
RLS
COM
• When wiring the terminals, set the limit switch installed in the direction in which the current feed value
increases as the upper limit, and the switch installed in the direction in which the current feed value
decreases as the lower limit. If the upper and lower limit switches are wired in incorrect directions, the
hardware stroke limit function does not operate properly, and the motor does not stop.
• Adjust the value in [Pr.6] Rotation direction setting so that the increasing or decreasing direction of the
current feed value matches with the movement direction of the workpiece. (Page 377 [Pr.6] Rotation
direction setting)
Control precautions
• If the machine is stopped outside the positioning module control range (outside the upper/lower limit switches), or is
stopped due to the detection of the hardware stroke limit, the OPR control (excluding when the OPR retry function is valid),
Major positioning control, and Advanced positioning control cannot be started. To perform these types of the control again,
return the workpiece into the positioning module control range using the JOG operation, Inching operation, or Manual pulse
generator operation.
• When [Pr.22] Input signal logic selection is set to the initial value, the positioning module cannot perform the positioning
control if FLS (Upper limit signal) is separated from COM or RLS (Lower limit signal) is separated from COM (including
when not wired).
When the hardware stroke limit function is not used
When the hardware stroke limit function is not used, wire the terminals of the FLS (Upper limit signal) and RLS (Lower limit
signal) of the positioning module as illustrated in the following figure.
When Positive logic is set as the logic for FLS and RLS in [Pr.22] Input signal logic selection, the positioning control can be
performed even if FLS and RLS are not wired. For details, refer to the following.
Page 305 External I/O Signal Logic Switching Function
Positioning module
FLS
RLS
COM
12 CONTROL SUB FUNCTION
240
12.4 Function to Limit Control
24 V DC
24 V DC