Danfoss VLT FC 103 Programming Manual page 52

Parameter Description
3-13 Reference Site
Option: Function:
Select which reference site to activate.
[0] Linked to Use local reference when in Hand mode; or
*
Hand / Auto remote reference when in Auto mode.
[1] Remote Use remote reference in both Hand mode
and Auto mode.
[2] Local Use local reference in both Hand mode and
Auto mode.
NOTE
When set to [2] Local, the frequency
converter will start with this setting
again following a 'power down'.
3-14 Preset Relative Reference
Range: Function:
0 % [-100 - The actual reference, X, is increased or
*
100 %] decreased with the percentage Y, set in
3-14 Preset Relative Reference. This results in the
actual reference Z. Actual reference (X) is the
sum of the inputs selected in 3-15 Reference 1
Source, 3-16 Reference 2 Source, 3-17 Reference
3 Source and 8-02 Control Source.
Y
Relative
X Z=X+X*Y/100
Illustration 3.13
Z
-100 0
Illustration 3.14
3-15 Reference 1 Source
Option: Function:
Select the reference input to be used
for the first reference signal.
3-15 Reference 1 Source, 3-16 Reference
2 Source and 3-17 Reference 3 Source
define up to three different reference
signals. The sum of these reference
signals defines the actual reference.
®
VLT Refrigeration Drive Programming Guide
Resulting
Z
actual
reference
X
Y
100 %
P 3-14
®
MG16H102 - VLT is a registered Danfoss trademark
3-15 Reference 1 Source
Option: Function:
[0] No function
[1] Analog Input 53
*
[2] Analog Input 54
[7] Pulse input 29
[8] Pulse input 33
[20] Digital pot.meter
[21] Analog input X30/11
[22] Analog input X30/12
[23] Analog Input X42/1
[24] Analog Input X42/3
[25] Analog Input X42/5
[30] Ext. Closed Loop 1
[31] Ext. Closed Loop 2
[32] Ext. Closed Loop 3
NOTE
This parameter cannot be changed while the motor is
running.
3-16 Reference 2 Source
Option: Function:
Select the reference input to be
used for the second reference
signal. 3-15 Reference 1 Source,
3-16 Reference 2 Source and
3-17 Reference 3 Source define up to
three different reference signals. The
sum of these reference signals
defines the actual reference.
[0] No function
[1] Analog Input 53
[2] Analog Input 54
[7] Pulse input 29
[8] Pulse input 33
[20] Digital pot.meter
*
[21] Analog input X30/11
[22] Analog input X30/12
[23] Analog Input X42/1
[24] Analog Input X42/3
[25] Analog Input X42/5
[30] Ext. Closed Loop 1
[31] Ext. Closed Loop 2
[32] Ext. Closed Loop 3
NOTE
This parameter cannot be changed while the motor is
running.
3 3
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