Preset relative ref.
P
re
se
t
re
f.
R
e
f.
1
so
u
rce
Ext. closed loop outputs
No function
Analog inputs
Frequency inputs
No function
No function
Freeze ref.
Speed up/ speed down
ref.
Remote
Ref. in %
[1]
[2]
[3]
[4]
[5]
[6]
[7]
Open loop
Freeze ref.
&
increase/
decrease
ref.
Scale to
RPM,Hz
or %
Scale to
Closed
loop
unit
Relative
X+X*Y
/100
DigiPot
DigiPot
DigiPot
max ref.
min ref.
[0]
on
off
Configuration mode
Closed loop
Input command:
Ref. function
Ref. Preset
Input command:
Preset ref. bit0, bit1, bit2
External
reference
in %
Bus
reference
Open loop
From Feedback Handling
Setpoint
Configuration mode
Input command:
Input command:
Digipot ref.
Increase
Decrease
Clear
DigiPot
Closed loop
R
e
f.
2
so
u
rce
R
e
f.
3
so
u
rce
Analog inputs
Frequency inputs
Analog inputs
Frequency inputs
Ext. closed loop outputs
Ext. closed loop outputs
P
3
-1
0
P
3
-1
5
P
3
-1
6
P
3
-1
7
Y
X
%
%
P 1-00
P 3-14
±100%
e
3
0
b
a
3
5
7
.1
3
P 3-04
±200%
±200%
±200%
0%
±200%
P 1-00
±200%
0/1
0/1
0/1
S
S
S
Illustration 86: Remote Handling of Reference
11.3 Reference Limits
The reference range, minimum reference, and maximum reference define the allowed range of the sum of all references. The sum of
all references is clamped when necessary. The relation between the resulting reference (after clamping) and the sum of all referen-
ces are shown in
.
AJ300847815559en-000101 / 130R0337 | 161
Danfoss A/S © 2020.09
Basic Operating Principles
VLT® AQUA Drive FC 202
Design Guide