Danfoss VLT AutomationDrive FC 302 Programming Manual page 70

Parameter Descriptions
3-13 Reference Site
Option:
[0] Linked to
Hand /
*
3 3
Auto
[1] Remote
[2] Local
[3] Linked to
H/A MCO
3-14 Preset Relative Reference
Range:
0 % [-100 -
*
100 %]
Illustration 3.22 Preset Relative Reference
68
VLT
Function:
Select which reference site to activate.
Use local reference when in Hand mode, or
remote reference when in Auto mode.
Use remote reference in both Hand mode and
Auto mode.
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 'powerdown'.
Select this option to enable the FFACC factor in
parameter 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.
Function:
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
3-15 Reference 1 Source, 3-16 Reference 2 Source,
3-17 Reference 3 Source, and 8-02 Control Source.
Y
Resulting
Z
Relative
actual
X
Z=X+X*Y/100
reference
Danfoss A/S © Rev. 10/2014 All rights reserved.
®
AutomationDrive FC 301/302
-100
Illustration 3.23 Actual Reference
3-15 Reference Resource 1
Option:
[0] No function
[1] Analog Input 53
[2] Analog Input 54
[7] Frequency input
29
[8] Frequency input
33
[11] Local bus
reference
[20] Digital pot.meter
[21] Analog input
X30/11
[22] Analog input
X30/12
[29] Analog Input
X48/2
3-16 Reference Resource 2
Option:
[0] No function
[1] Analog Input 53
[2] Analog Input 54
[7] Frequency input 29
Z
X
Y
0 100 %
P 3-14
Function:
Select the reference input to be used
for the first reference signal.
Parameter 3-15 Reference Resource 1,
parameter 3-16 Reference Resource 2, and
parameter 3-17 Reference Resource 3
define up to 3 different reference
signals. The sum of these reference
signals defines the actual reference.
(General Purpose I/O Option Module)
(General Purpose I/O Option Module)
Function:
Select the reference input to be used
for the second reference signal.
Parameter 3-15 Reference Resource 1,
parameter 3-16 Reference Resource 2,
and parameter 3-17 Reference Resource
3 define up to 3 different reference
signals. The sum of these reference
signals defines the actual reference.
MG33MJ02