Danfoss VLT HVAC Drive FC 102, Programming Manual, Page: 62 / 250

3-13 Reference Site
Option: Function:
Select which reference site to activate.
[0]
*
Linked to
Hand /
Auto Use local reference when in Hand mode, or
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.
NOTICE
When set to [2] Local , the frequency
converter starts with this setting again
following a power-down.
[3] Linked to
H/A MCO Select this option to enable the FFACC factor in
32-66 Acceleration Feed-Forward . Enabling FFACC
reduces jitter and makes the transmission from
the motion controller to the control card of the
frequency converter faster. This leads to faster
response times for dynamic applications and
position control. For more information about
FFACC, see
Programmable Motion Controller
MCO 305 Operating Instructions .
3-14 Preset Relative Reference
Range: Function:
0 %
*
[-100 -
100 %] The actual reference, X, is increased or decreased
with the percentage Y, set in
parameter 3-14 Preset Relative Reference . This
results in the actual reference Z. Actual reference
(X) is the sum of the inputs selected in
parameter 3-15 Reference 1 Source ,
parameter 3-16 Reference 2 Source ,
parameter 3-17 Reference 3 Source , and
parameter 8-02 Control Source .
Relative
Z=X+X*Y/100
Resulting
actual
reference
Y
X
130BA059.12
Z
Illustration 3.18 Preset Relative Reference
X
100 % 0 -100
Z
Y
X+X*Y/100
P 3-14
130BA278.10
Illustration 3.19 Actual Reference
3-15 Reference 1 Source
Option: Function:
NOTICE
This parameter cannot be adjusted
while the motor is running.
Select the reference input to be used for
the first reference signal.
•
Parameter 3-15 Reference 1
Source
.
•
Parameter 3-16 Reference 2
Source
.
•
Parameter 3-17 Reference 3
Source
.
define up to 3 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
[29] Analog Input
X48/2
[30] Ext. Closed Loop
1
[31] Ext. Closed Loop
2
Parameter Descriptions
VLT
®
HVAC Drive FC 102
60 Danfoss A/S © 03/2015 All rights reserved. MG11CE02
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