Parameters: 30-** Special Features; 30-0* Wobble Function; Reset Maintenance Word; Wobble Mode - Danfoss VLT AutomationDrive FC 302 Programming Manual

Parameter Descriptions
23-14 Maintenance Date and Time
Array [20]
Range:
3 3

23-15 Reset Maintenance Word

Option:
[0] Do not
*
reset
[1] Do
reset
23-16 Maintenance Text
Array [6]
Range:
0 [0 -
*
20 ]
232
Function:
NOTICE
The frequency converter has no back-
up of the clock function. The set date/
time is reset to default (2000-01-01
00:00) after a power-down. In
parameter 0-79 Clock Fault, it is possible
to program a warning if the clock has
not been set properly, for example after
a power-down.
Set the time at least 1 hour later than
actual time.
NOTICE
®
When mounting a VLT
option MCB 109 option card, a battery
back-up of the date and time is
included.
Function:
NOTICE
When messages are reset, maintenance
item, action, and maintenance date/time
are not canceled.
Parameter 23-12 Maintenance Time Base is
set to [0] Disabled.
Set this parameter to [1] Do reset to reset the
maintenance word in parameter 16-96 Maintenance
Word and reset the message shown in the LCP.
This parameter changes back to [0] Do not reset
when pressing [OK].
Function:
6 individual texts (Maintenance Text
0...Maintenance Text 5) can be written for use in
either parameter 23-10 Maintenance Item or
parameter 23-11 Maintenance Action.
The text is written according to the guidelines in
parameter 0-37 Display Text 1.
Danfoss A/S © 10/2018 All rights reserved.
®
VLT AutomationDrive FC 301/302

3.22 Parameters: 30-** Special Features

3.22.1 30-0* Wobble Function

The wobble function is primarily used for synthetic yarn
winding applications. The wobble option is installed in the
frequency converter controlling the traverse frequency
converter. The yarn moves back and forth in a diamond
pattern across the surface of the yarn package. To prevent
a build-up of yarn at the same points at the surface, this
pattern must be altered. The wobble option can
accomplish this by continuously varying the traverse
velocity in a programmable cycle. The wobble function is
created by superimposing a delta frequency around a
center frequency. To compensate for the inertia in the
system, a quick frequency jump can be included. Suitable
for elastic yarn applications, the option features a
randomized wobble ratio.
Analog I/O
Par. 30-01 [Hz]: DELTA FREQ.
Par. 30-02 [%]: DELTA FREQ.
(Par. 30-03)
CENTER FREQ
Illustration 3.72 Wobble Function

30-00 Wobble Mode

Option:
[0] Abs. Freq.,
Abs. Time
*
[1] Abs. Freq.,
Up/ Down
Time
[2] Rel. Freq.,
Abs. Time
Frequency
[Hz]
Par. 30-01 [Hz]
Par. 30-02 [%]
(Par. 30-03:)
Par. 30-09: RANDOM FUNC
Par. 30-*1: RAMP UP
Par 30-11: RANDOM MAX
Par 30-12: RANDOM MIN
Par. 30-10: [RATIO T / T
UP
Par. 30-08: [INDEPENDENT UP and DOWN]
Function:
NOTICE
This parameter cannot be adjusted while
the motor is running.
The standard speed open-loop mode in
parameter 1-00 Configuration Mode is extended
with a wobble function. In this parameter, it is
possible to select which method to be used for
the wobbler. Set the parameters as absolute
values (direct frequencies) or as relative values
(percentage of other parameter). Set the
wobble cycle time as an absolute value or as
independent up and down times. When using
an absolute cycle time, the up and down times
are configured through the wobble ratio.
Par. 30-07: WOBB TIME
Par. 30-06: JUMP TIME
Par. 30-04 [Hz]: JUMP FREQ
Par. 30-09 [%] : JUMP FREQ
T
T
UP
DOWN
]
DOWN
Time [s]
MG33MP02