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Mitsubishi Electric RD77MS2 User Manual Page 246

Melsec iq-r simple motion module.
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  • Contents

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■External input signal via CPU (buffer memory of Simple Motion module)
Lower limit
Mechanical stopper
Wiring the hardware stroke limit
When using the hardware stroke limit function, wire the terminals of the Simple Motion module/servo amplifier upper/lower
limit stroke limit as shown in the following drawing. As for the 24 V DC power supply, the direction of current can be switched.
(When "[Pr.22] Input signal logic selection" is set to the initial value)
When using the hardware stroke limit function with the external input signal via CPU (buffer memory of Simple Motion
module), wiring differs depending on the input module.
*1 When "Servo amplifier" is set in "[Pr.116] FLS signal selection" to "[Pr.118] DOG signal selection" at MR-JE-B use, any errors or
warnings do not occur. However, the external input signal (upper/lower limit signal, near-point dog signal) cannot be operated.
Simple Motion module
FLS
RLS
COM
24 V DC
Wire the limit switch installed in the direction to which "Current feed value" increases as upper limit switch and
the limit switch installed in the limit switch installed in the direction to which "Current feed 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.
Refer to each servo amplifier instruction manual for details about the "Rotation direction selection/travel
direction selection (PA14)".
Precautions during control
• 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 "home position return 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".
• 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).
8 CONTROL SUB FUNCTIONS
8.4 Functions to Limit the Control
Control range of Simple Motion module
Movement
Start
Start
direction
Deceleration stop at lower
Deceleration stop at upper
limit switch detection
limit switch detection
Lower limit switch
Upper limit
Movement
direction
Upper limit switch
Servo amplifier
DI1
(FLS)
DI2
(RLS)
DICOM
24 V DC
Mechanical stopper
Input module
Simple Motion module
RD77MS4
RUN
ERR
3
1
AX
AX
4
2

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Mitsubishi Electric RD77MS2 User Manual
Mitsubishi Electric RD77MS2 User Manual 84 pages

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