Pid For Speed Control - Danfoss VLT 5000 Series Design Manual

PID for speed control

Below are given a couple of examples of programming
of VLT 5000 PID speed control.
175ZA451.10
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MG.52.B2.02 - VLT is a registered Danfoss trademark
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VLT 5000 Design Guide
A conveyor belt that carries heavy items must be main-
tained at a regular speed, which is set by means of a
potentiometer within the range of 0-1500 rpm, 0-10
Volts. The speed selected must be kept constant and
the integrated PID speed controller is to be applied.
This is a case of normal control, which means that
when the load increases, the power supplied to the
conveyor belt motor increases in order to keep the
speed constant. Correspondingly, when the load falls,
the power is reduced.
The feedback used is an encoder with a resolution of
1024 pulses/rev. push-pull.
1. Start/Stop
2. Speed reference 0-1500 rpm, 0-10 Volts
3. Encoder 1024 pulses/rev. push-pull.
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