Danfoss VLT FC 102 Programming Manual page 80

Parameter Descriptions
3-17 Reference 3 Source
Option:
[0] No function
*
[1] Analog Input
53
3 3
[2] Analog Input
54
[7] Pulse input 29
[8] Pulse input 33
[20] Digital
pot.meter
[21] Analog input
X30/11
[22] Analog input
X30/12
[23] Analog Input
X42/1
[24] Analog Input
X42/3
[25] Analog Input
X42/5
[29] Analog Input
X48/2
[30] Ext. Closed
Loop 1
[31] Ext. Closed
Loop 2
[32] Ext. Closed
Loop 3
[37] Analog Input
X49/1
[38] Analog Input
X49/3
[39] Analog Input
X49/5
[133] Fieldbus REF 1
3-19 Jog Speed [RPM]
Range:
Size
related RPM]
*
78
Function:
Function:
[ 0 - par. 4-13 Enter a value for the jog speed
n , which is a fixed output speed.
JOG
The frequency converter runs at
this speed when the jog function is
activated. The maximum limit is
defined in parameter 4-13 Motor
Speed High Limit [RPM].
See also parameter 3-11 Jog Speed
[Hz] and parameter 3-80 Jog Ramp
Time.
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®
VLT HVAC Drive FC 102
3.5.3 3-4* Ramp 1
Configure the ramp times for each of the 2 ramps
(parameter group 3-4* Ramp 1 and parameter group 3-5*
Ramp 2).
Illustration 3.21 Ramp 1
Option:
[0]
*
[1]
[2]
RPM
P 4-13
High-limit
Reference
P 1-25
Motor
speed
P 4-11
Low limit
P 3-*1
Ramp (X)Up
Time (Acc)
t
acc
Function:
NOTICE
If [1] S-ramp Const Jerk is
selected and the reference
during ramping is changed,
the ramp time may be
prolonged to realize a jerk-free
movement, which may result
in a longer start or stop time.
Extra adjustment of the S-
ramp ratios or switching
initiators may be necessary.
Select the ramp type, depending on
requirements for acceleration/
deceleration.
A linear ramp gives constant
acceleration during ramping. An S-
ramp gives non-linear acceleration,
compensating for jerk in the
application.
Linear
S-ramp Const Acceleration with lowest possible
Jerk jerk.
S-ramp Const S-ramp based on the values set in
Time parameter 3-41 Ramp 1 Ramp Up
Time and parameter 3-42 Ramp 1
Ramp Down Time.
Time
P 3-*2
Ramp (X)
Down
Time (Dec)
t
dec
M0010001