Danfoss FC 51 Series Programming Manual page 24

Parameter Descriptions
3-12 Catch Up/Slow Down Value
Range:
0% [0-100%] The Catch-up/Slowdown function is activated by
*
4 4
3-14 Preset Relative Reference
Range:
0.00% [-100.00-100.00%] Define fixed value in % to be added
3-15 Reference 1 Source
Option:
[0] No Function
[1] Analog Input
*
53
[2] Analog Input
60
[8] Pulse input 33
[11] Local Bus
Reference
[21] LCP Potenti-
ometer
22
VLT
Function:
an input command (see 5-1* Digital Inputs,
choice [28]/[29]). If the command is active, the
Catch-up/Slowdown value (in %) is added to
the reference function as follows:
Reference = Reference + Reference
Catchup Slowdown
×
100
Reference = Reference − Reference
Catchup Slowdown
×
100
When the input command is inactivated, the
reference returns to its original value ie.
Reference=Reference + 0.
Function:
to variable value defined in 3-18
Relative Scaling Reference Source.
The sum of fixed and variable values
(labeled Y in illustration below) is
multiplied with actual reference
(labeled X in illustration). This
product is added to actual reference
Y
X + X ×
100
Y
Z
Relative
X
Z=X+X*Y/100
Illustration 4.5
Function:
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.
No reference signal is defined.
Use signals from analog input 53 as
reference, see parameter group 6-1*
Analog Input 1.
Use signals from analog input 60 as
reference, see parameter group 6-2*
Analog Input 2.
Use signals from pulse input as reference,
see parameter group 5-5* Pulse Input.
Use signals from local bus as reference,
see parameter group 8-9* Bus Feedback.
Use signals from LCP potentiometer as
reference, parameter group 6-8* LCP
Potentiometer.
MG02C602 - VLT
®
Micro Drive FC 51 Programming Guide
3-16 Reference 2 Source
Option:
[0] No Function
[1] Analog Input 53
[2] Analog Input 60
*
[8] Pulse input 33
[11] Local Bus
Reference
[21] LCP Potentiometer
3-17 Reference 3 Source
Option:
[0] No Function
[1] Analog Input 53
[2] Analog Input 60
[8] Pulse input 33
Resulting
actual
reference
[11] Local Bus
*
Reference
[21] LCP Potentiometer Use signals from LCP potentiometer
3-18 Relative Scaling Reference Source
Option:
[0] No Function
*
[1] Analog Input 53
[2] Analog Input 60
[8] Pulse Input 33
[11] Local Bus
Reference
[21] LCP Potentiometer Select LCP potentiometer as relative
®
is a registered Danfoss trademark
Function:
See 3-15 Reference 1 Source for
description.
No reference signal is defined.
Use signals from analog input 53 as
reference.
Use signals from analog input 60 as
reference.
Use signals from pulse input as
reference, see parameter group 5-5*
Pulse Input.
Use signals from local bus as
reference.
Use signals from LCP potentiometer as
reference.
Function:
See 3-15 Reference 2 Source for
description.
No reference signal is defined.
Use signals from analog input 53 as
reference.
Use signals from analog input 60 as
reference.
Use signals from pulse input as
reference, see parameter group 5-5*
Pulse Input.
Use signals from local bus as
reference.
as reference.
Function:
Select the source for a variable value to
be added to the fixed value defined in
3-14 Preset Relative Reference.
The function is disabled
Select analog input 53 as relative
scaling reference source.
Select analog input 60 as relative
scaling reference source.
Select pulse input 33 as relative scaling
reference source.
Select local bus ref. as relative scaling
reference source.
scaling reference source.