Encoder Connection; Encoder Direction; Closed Loop Drive System; Programming Of Torque Limit And Stop - Danfoss VLT AutomationDrive FC 300 Design Manual

FC 300 Design Guide

7.1.4. Encoder Connection

The purpose of this guideline is to ease the set-up of encoder connection to FC 300. Before setting
up the encoder the basic settings for a closed loop speed control system will be shown.
Encoder Connection to FC 300
24 V incremental encoder. Max. cable length 5
m.

7.1.5. Encoder Direction

The direction of encoder is determined by which order the pulses are entering the drive.
Clockwise direction means channel A is 90 electrical degrees before channel B.
Counter Clockwise direction means channel B is 90 electrical degrees before A.
The direction determined by looking into the shaft end.

7.1.6. Closed Loop Drive System

A drive system consist usually of more
elements such as:
•
•
•
•
•
•
•
Applications demanding mechanical brake
control will usually need a brake resistor.

7.1.7. Programming of Torque Limit and Stop

In applications with an external electro-mechanical brake, such as hoisting applications, it is pos-
sible to stop the frequency converter via a 'standard' stop command and simultaneously activate
the external electro-mechanical brake.
Motor
Add
(Gearbox)
(Mechanical Brake)
FC 302 AutomationDrive
Encoder as feed-back system
Brake resistor for dynamic braking
Transmission
Load
MG.33.B9.02 - VLT ® is a registered Danfoss trademark
7. Application Examples
Illustration 7.1: Basic Set-up for FC 302 Closed
Loop Speed Control
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