Danfoss VLT AutomationDrive FC 300 Series Design Guide

FC 300 Design Guide
Introduction to FC 300
" Control Structure in VVC
plus
Control structure in VVC
plus
open loop and closed-loop confi gurations:
In the configuration shown in the illustration above, par. 1-01 Motor C ontrol Principle is set to "VVC
plus
[1]" and par. 1-00 is set to "Speed open loop [0]". The resulting reference from the reference handling
system is received and fed through the ramp limitation and speed limitation before being sent to the motor
control. The output of the motor control is then limited by the maximum frequency limit.
If par. 1-0 0 is set to "Speed closed-loop [1]", the result ing reference will be passed from
the ramp li mitation and speed limitation into a sp ee d PID control. The Spe ed PID control
parameters are located in the par. group 7-0*. The resulting reference from the Speed P ID
control is sent to the m otor control limited by the frequency limit.
Select "Process [3]" in par. 1-00 to use the process P ID control for closed-loop control of e.g. speed
or pressure in the controlled appl ication. The Process PID parameters are located in par. group
7-2* and 7-3*. Process PID is not available in this software release.
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MG.33.B3.22 - VLT is a registered Danfoss trademark

Danfoss VLT AutomationDrive FC 300 Series Specifications

General

Brand	Danfoss
Model	VLT AutomationDrive FC 300 Series
Category	DC Drives
Language	English