MI.50.J1.02 - VLT is a registered Danfoss trademark
2
VLT
®
Series 5000 Wobble function
Introduction
■
The wobble function is primarily used for synthetic
yarn winding applications. The wobble option is to be
installed in the VLT controlling the traverse drive. The
traverse drive VLT will move the yarn back and forth
in a diamond pattern across the surface of the yarn
package. To prevent a buildup of yarn at the same
points at the surface, this pattern must be altered.
The wobble option can accomplish this by continu
ously varying the traverse velocity in a programmable
cycle.
The wobble function is created by superimposing a
delta frequency around a center frequency. To com
pensate for the inertia in the system a quick fre
quency jump can be included. Especially suitable for
elastic yarn applications the option features a ran
domized wobble ratio.
Parameter description
■
100
Configuration (CONFIG. MODE )
Value:
✭
Speed regulation, open loop
(SPEED OPEN LOOP)
[0]
Speed regulation, closed loop
(SPEED CLOSED LOOP)
[1]
Process regulation, closed loop
(PROCESS CLOSED LOOP)
[3]
Torque regulation, open loop
(TORQUE OPEN LOOP)
[4]
Torque regulation, speed feedback
(TORQUE CONTROL SPEED)
[5]
Function:
The parameter is used for selecting the
configuration to which the VLT frequency converter is
to be adapted. This parameter is identical to
parameter 100 in the standard VLT5000 software.
Description of choice:
The wobble function can be active only by selecting
Speed, open loop mode
[0]. The wobble option
parameters: 700 - 709 are not visible in the other
modes.
700
Wobble mode (WOBB MODE)
Value:
✭
Wobble mode OFF (OFF)
[0]
Wobble mode ON (ON)
[1]
Function:
The standard speed open loop mode set in
parameter 100 is extended with a wobble function.
In this parameter it is possible to select or
deselect the wobble function. Deselecting the
wobble function makes the drive operate in the
standard speed open loop mode.
Description of choice:
Select
OFF
[0] to disable the wobble function. The
speed open loop mode acts as in the standard
VLT5000 software.
Select
ON
[1] to enable the wobble function.
W
W
W
W
War
ar
ar
ar
arning:
ning:
ning:
ning:
ning:
This parameter can be set while running.
