Sample Applications; Conveyor Belt - Mitsubishi Electric FR-A800 Series Beginner's Manual

Sample applications (Conveyor belt)
A.2

Sample applications

The applications in this section have been chosen to demonstrate some of the things that you can do
with frequency inverters.
HINWEIS The wiring diagrams and the parameter settings are only provided to illustrate these specific
examples. They should not be copied directly – you will need to wire and configure your inverter
for the specific requirements of your own application.
When you are planning and installing your system please also be sure to observe all the relevant
regulations and standards for electrical systems applicable in your location, particularly the safety
regulations.
A.2.1

Conveyor belt

Frequency inverters are often used to control conveyor belts to feed parts and material to processing
stations because they are able to accelerate and decelerate the drive gently.
In this example we are going to use an FR-A800 series inverter to power and control the belt using the
speed/time pattern shown in the graph above.
Power supply
The configuration is as follows: The belt is started and stopped by an external controller (for example
a PLC). The speed of the motor and thus of the conveyor belt can be adjusted with a setpoint poten-
tiometer.
A - 18
Acceleration
Pr. 7
Frequency inverter FR-A800
Fuse
Speed setting
signal
Constant speed
Conveyor belt
Motor
Start/Stop signal from external controller
Appendix
Time
Deceleration
Pr. 8
Material