Internal Current Control In Vvc Plus Mode; Local (Hand On) And Remote (Auto On) Control - Danfoss FC 300 Design Manual

FC 300 Design Guide
The motor control in this configuration relies on a feedback signal from an encoder mounted directly on the motor (set in par. 1-02
Source
).
Select "Speed closed loop [1]" in par. 1-00
parameters are located in par. group 7-0*.
Configuration Mode
Select "Torque [2]" in par. 1-00
Flux with motor feedback
the (par. 1-01
It requires no torque feedback, since the actual torque is calculated on the basis of the current measurement of the frequency converter.
Configuration Mode
Select "Process [3]" in par. 1-00
controlled application.
3.2.7 Internal Current Control in VVC
The frequency converter features an integral current limit control which is activated when the motor current, and thus the torque, is higher than the
Torque Limit Motor Mode
torque limits set in par. 4-16
When the frequency converter is at the current limit during motor operation or regenerative operation, the frequency converter will try to get below the
preset torque limits as quickly as possible without losing control of the motor.

3.2.8 Local (Hand On) and Remote (Auto On) Control

The frequency converter can be operated manually via the local control panel (LCP) or remotely via analog and digital inputs and serial bus.
[Hand on] Key on LCP
If allowed in par. 0-40
to start and stop the frequency converter via the LCP using the [Hand ON] and [Off] keys. Alarms can be reset via the [RESET] key. After pressing the
[Hand ON] key, the frequency converter goes into Hand mode and follows (as default) the Local reference that can be set using arrow key on the LCP.
After pressing the [Auto On] key, the frequency converter goes into Auto
mode and follows (as default) the Remote reference. In this mode, it is
possible to control the frequency converter via the digital inputs and var-
ious serial interfaces (RS-485, USB, or an optional fieldbus). See more
about starting, stopping, changing ramps and parameter set-ups etc. in
par. group 5-1* (digital inputs) or par. group 8-5* (serial communica-
tion).
Active Reference and Configuration Mode
The active reference can be either the local reference or the remote reference.
In par. 3-13 Reference Site the local reference can be permanently selected by selecting
To permanently select the remote reference select
mode is active. (Hand Mode or Auto Mode).
Configuration Mode
to use the resulting reference as an input for the Speed PID control. The Speed PID control
to use the resulting reference directly as a torque reference. Torque control can only be selected in
Motor Control Principle
) configuration. When this mode has been selected, the reference will use the Nm unit.
to use the process PID control for closed loop control of e.g. speed or a process variable in the
plus
Mode
Torque Limit Generator Mode
, par. 4-17
[Off] Key on LCP
, par. 0-41 , par. 0-42
Remote [1]. By selecting Linked to Hand/Auto
MG.33.BC.02 - VLT ® is a registered Danfoss trademark
3 Introduction to AutomationDrive FC 300
Current Limit
and par. 4-18
[Auto on] Key on LCP
, and par. 0-43
Local [2].
[0] (default) the reference site will depend on which
Flux Motor Feedback
.
[Reset] Key on LCP
, it is possible
130BP046.10
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