Danfoss VLT Micro Drive FC 51 Series Programming Manual page 28

VLT Micro Drive FC 51
Analog Input 60
*
[2]
[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
Local Bus Reference
*
[11]
[21] LCP Potentiometer
3-18 Relative Scaling Reference Source
Option:
* No Function
[0]
[1] Analog Input 53
[2] Analog Input 60
[8] Pulse Input 33
[11] Local Bus Reference
[21] LCP Potentiometer
4.4.4. 3-4* Ramp 1
A linear ramp is characterized by ramping up at a constant speed until the desired motor speed has been reached. Some overshoot may be experienced
when reaching speed, which may cause speed jerks for a short while before stabilizing.
An S-ramp accelerates more smoothly thus compensating for jerks when the speed is reached.
See the below figure for a comparison of the two ramp types.
Ramp Times:
Ramp up: Acceleration time from 0 to nominal motor frequency (par. 1-23).
Deceleration time from nominal motor frequency (par. 1-23) to 0.
Use signals from analog input 60 as reference.
Use signals from pulse input as reference, see par. 5-5*.
Use signals from local bus as reference.
Use signals from LCP potentiometer as reference.
Function:
See Par. 3-15 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 par. 5-5*.
Use signals from local bus as reference.
Use signals from LCP potentiometer as reference.
Function:
Select the source for a variable value to be added to the fixed value defined in par. 3-14,
erence .
The function is disabled
Select analog input 53 as relative scaling reference source.
Select analog input 54 as relative scaling reference source.
Select pulse input 33 as relative scaling reference source.
Select local bus ref. as relative scaling reference source.
Select LCP potentiometer as relative scaling reference source.
MG.02.C4.02 - VLT is a registered Danfoss trademark
4. Parameter Descriptions
Preset Relative Ref-
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