Danfoss VLT Midi Drive FC 280 Design Guide

2.4 Reference Handling
Local reference
The local reference is active when the frequency converter is operated with [Hand On] active. Adjust the reference by [
▲
]/[
▼
]
and [◄/[►].
Remote reference
The reference handling system for calculating the remote reference is shown in Illustration 2.13.
No function
Analog ref.
Pulse ref.
Local bus ref.
Preset relative ref.
Preset ref.
Local bus ref.
No function
Analog ref.
Pulse ref.
Analog ref.
Pulse ref.
Local bus ref.
No function
Local bus ref.
Pulse ref.
No function
Analog ref.
Input command:
Catch up/ slow down
Catchup Slowdown
value
Freeze ref./Freeze output
Speed up/ speed down
ref.
Remote
Ref. in %
-max ref./
+max ref.
Scale to
Hz
Scale to
Nm
Scale to
process
unit
Relative
X+X*Y
/100
DigiPot
DigiPot
DigiPot
max ref.
min ref.
DigiPot
D1
P 5-1x(15)
Preset '1'
External '0'
Process
Torque
Speed
open/closed loop
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(0)
(0)
(1)
Relative scaling ref.
P 3-18
Ref.resource 1
P 3-15
Ref. resource 2
P 3-16
Ref. resource 3
P 3-17
200%
-200%
Y
X
-100%
100%
%
%
Ref./feedback range
P 3-00
Conguration mode
P 1-00
P 3-14
±100%
130BD374.10
P 16-01
P 16-02
P 3-12
P 5-1x(21)/P 5-1x(22)
P 5-1x(28)/P 5-1x(29)
P 5-1x(19)/P 5-1x(20)
P 3-04
Freeze ref.
&
increase/
decrease
ref.
Catch up/
slow
down
P 3-10
Illustration 2.13 Remote Reference
Product Overview Design Guide
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Danfoss VLT Midi Drive FC 280 Specifications

General

Brand	Danfoss
Model	VLT Midi Drive FC 280
Category	DC Drives
Language	English