Mitsubishi Electric Melsec FX Series Beginners Manual page 31

Servo motor
Dedicated to high speed response optimal to positioning control, has
large start torque, large maximum torque and wide variable speed
range 1/1 or more (1/1,000 to 1/5,000).
Servo motor
In the case of large motor
Cooling fan
Servo
motor
SM
Encoder
PLG
(pulse
generator)
Electro-
When
magnetic
required
brake
Hand help
programmer
Setting / display unit
Used to write programs to the position
controller, allows setting and display of the
data.
Fig. 3-1: Components of Postioning Control (2)
FX Positioning Control Systems
When a moving element goes beyond a limit switch
(LS), the motor stops.
Limit switch Nearpoint
(LS) dog switch
Speed
reducer
Auxiliary device such as chuck, drill and cylinder
Personal
Computer
Components of Positioning Control and their Roles
Limit switch
(LS)
Moving element
Ball screw
Sensor, actuator, auxiliary device
The actuator (moving part drive mechanism)
is equipped with speed reducer, timing belt,
ball screw and limit switch.
Diversified auxiliary devices are also
controlled in accordance with positioning.
The PLC or the positioning controller also
controls auxiliary devices.
The auxiliary device operation completed
signal is output to the PLC or the position
controller.
300020da.eps
3 - 3