Ramps; Jog Speed [Rpm] - Danfoss VLT AutomationDrive Programming Manual

Parameter Descriptions
3-18 Relative Scaling Reference Resource
Option: 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
NOTE!
This parameter cannot be adjusted while the motor is
running.

3-19 Jog Speed [RPM]

Range:
Application [Application
dependent dependant]
*

3.5.3 Ramps

3-4* Ramp 1
For each of four ramps (parameter groups 3-4*, 3-5*, 3-6*
and 3-7*), configure the ramp parameters: ramp type,
ramping times (duration of acceleration and deceleration)
and level of jerk compensation for S ramps.
Start by setting the linear ramping times corresponding to
the figures.
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FC 300 Programming Guide
Function:
Enter a value for the jog speed
n , which is a fixed output
JOG
speed. The Adjustable frequency
drive runs at this speed when
the jog function is activated. The
maximum limit is defined in
4-13 Motor Speed High Limit
[RPM].
See also 3-80 Jog Ramp Time.
®
MG33MD22 - VLT is a registered Danfoss trademark
RPM
P 4-13
High-limit
Reference
n
s
P 4-11
Low limit
P 3-*1
Ramp (X)Up
Time (Acc)
t
acc
If S-ramps are selected, then 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 (i.e., increasing
or decreasing). The S-ramp acceleration and deceleration
settings are defined as a percentage of the actual ramp
time.
3-40 Ramp 1 Type
Option: Function:
Select the ramp type, depending on
requirements for acceleration/deceleration.
A linear ramp will give constant acceleration
during ramping. An S-ramp will give non-
linear acceleration, compensating for jerk in
the application.
[0] Linear
*
[1] S-ramp Acceleration with lowest possible jerk.
Const Jerk
[2] S-ramp S-ramp based on the values set in 3-41 Ramp
Const Time 1 Ramp up Time and 3-42 Ramp 1 Ramp Down
Time.
3
P 3-*2 Time
Ramp (X) Down
Time (Dec)
t
dec
3-37
3