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8 CONTROL SUB FUNCTIONS
8.4 Functions to Limit the Control
243
8
Hardware stroke limit function
In the "hardware stroke limit function", limit switches are set at the upper/lower limit of the physical moveable range, and the
control is stopped (by deceleration stop) by the input of a signal from the limit switch.
Damage to the machine can be prevented by stopping the control before the upper/lower limit of the physical moveable range
is reached.
The hardware stroke limit is able to use the following signals. (
Page 424 [Pr.116] to [Pr.119] FLS/RLS/DOG/STOP signal
• External input signal of Simple Motion module
• External input signal of servo amplifier
• External input signal via CPU (buffer memory of Simple Motion module)
Control details
The following drawing shows the operation of the hardware stroke limit function.
■
External input signal of Simple Motion module
■
External input signal of servo amplifier
WARNING
• When the hardware stroke limit is required to be wired, ensure to wire it in the negative logic using b-contact. If it is set in positive logic using a-contact, a
serious accident may occur.
Servo amplifier
Simple Motion
module
Upper limit
Lower limit
Control range of Simple Motion module
Start
Start
Lower limit switch
Upper limit switch
Mechanical stopper
Mechanical stopper
Deceleration stop at lower
limit switch detection
Deceleration stop at upper
limit switch detection
Movement
direction
Movement
direction
RD77MS4
ERR
RUN
AX
3
4
2
1
AX
Upper limit
Lower limit
Control range of Simple Motion module
Start
Start
Lower limit switch
Upper limit switch
Mechanical stopper
Mechanical stopper
SSCNET
µ
(/H)
Movement
direction
Movement
direction
Deceleration stop at lower
limit switch detection
Deceleration stop at upper
limit switch detection
Simple Motion
module
RD77MS4
ERR
RUN
AX
3
4
2
1
AX
Servo amplifier
Содержание RD77MS16
Страница 1: ...MELSEC iQ R Simple Motion Module User s Manual Application RD77MS2 RD77MS4 RD77MS8 RD77MS16 ...
Страница 2: ......
Страница 316: ...314 9 COMMON FUNCTIONS 9 4 External Input Signal Select Function Program example ...
Страница 317: ...9 COMMON FUNCTIONS 9 4 External Input Signal Select Function 315 9 ...
Страница 574: ...572 13 PROGRAMMING 13 4 Positioning Program Examples Parameter initialization program Flash ROM write program ...
Страница 575: ...13 PROGRAMMING 13 4 Positioning Program Examples 573 13 Error reset program Axis stop program ...
Страница 643: ......