Ramp - Danfoss VLT AutomationDrive EZ FC 321 Programming Manual

VLT® AutomationDrive EZ FC 321
Programming Guide
Enter a percentage (relative) value to be either added to or deducted from the actual reference for catch up or slow down. If catch
up is selected via 1 of the digital inputs (parameter 5-10 Terminal 18 Digital Input to parameter 5-15 Terminal 33 Digital Input), the
percentage (relative) value is added to the total reference. If slow down is selected via 1 of the digital inputs (parameter 5-10 Termi-
nal 18 Digital Input to parameter 5-15 Terminal 33 Digital Input), the percentage (relative) value is deducted from the total reference.
Obtain extended functionality with the DigiPot function. See parameter group 3-9* Digital Potentiometer.
Parameter 3-13 Reference Site
Table 182: Parameter 3-13 Reference Site
3-13 Reference Site
Default value: Size related
Conversion index: –
Select which reference site to activate.
Option Name
[0] Linked to hand/auto
[1] Remote
[2] Local

4.4.3 3-4* Ramp 1

For each of the 4 ramps (parameter groups 3-4* Ramp 1, 3-5* Ramp 2, 3-6* Ramp 3, and 3-7* Ramp 4) configure the ramp parameters:
• Ramp type
• Ramping times (duration of acceleration and deceleration)
• Level of jerk compensation for S-ramps
Start by setting the linear ramping times corresponding to
RPM
P 4-13
High-limit
Reference
n
s
P 4-11
Low limit
P 3-*1
Ramp (X)Up
Time (Acc)
Illustration 43: Linear Ramping Times
If S-ramps are selected, set the level of non-linear jerk compensation required. Set jerk compensation by defining the proportion of
ramp-up and ramp-down times where acceleration and deceleration are variable (that is, increasing or decreasing). The S-ramp ac-
celeration and deceleration settings are defined as a percentage of the actual ramp time.
Danfoss A/S © 2021.08
Parameter type: Option
Data type: Uint8
Description
Use local reference when in hand-on mode, or remote reference when in auto-on mode.
Use remote reference in both hand-on mode and auto-on mode.
Use local reference in both hand-on and auto-on mode.
When set to [2] Local, the drive starts with this setting again after a power-down.
P 3-*2
Ramp (X) Down
Time (Dec)
t t
acc dec
Setup: All setups
Change during operation: True
N O T I C E
Illustration 43 and Illustration
Time
Parameter Descriptions
44.
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