Reference Handling - Danfoss VLT Midi Drive FC 280 Design Manual

Product Overview

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.
DigiPot
P 3-14
Preset relative ref.
(0)
(1)
(2)
(3)
(4)
(5)
(6)
(7)
No function
Analog ref.
Pulse ref.
Local bus ref.
DigiPot
No function
Analog ref.
Pulse ref.
Local bus ref.
DigiPot
No function
Analog ref.
Pulse ref.
Local bus ref.
DigiPot
Illustration 2.13 Remote Reference
MG07B102
Design Guide
P 5-1x(28)/P 5-1x(29)
Input command:
Catch up/ slow down
Y
Catch up/
Relative
P 3-04
slow
X+X*Y
(0)
X
down
/100
(1)
Catchup Slowdown
D1
P 5-1x(15)
Preset '1'
External '0'
200%
-200%
Danfoss A/S © 03/2016 All rights reserved.
P 3-00
Ref./feedback range
P 5-1x(19)/P 5-1x(20)
Freeze ref./Freeze output
-max ref./
+max ref.
100%
-100%
max ref.
%
P 3-12
value
%
min ref.
±100%
Freeze ref.
&
increase/
decrease
ref.
P 5-1x(21)/P 5-1x(22)
Speed up/ speed down
P 16-02
Ref. in %
2
▲ ▼
]/[ ]
P 1-00
Con guration mode
Speed
open/closed loop
Scale to
Hz
Torque
P 16-01
Remote
ref.
Scale to
Nm
Process
Scale to
process
unit
21
2