Danfoss VLT 8000 AQUA series, Руководство по эксплуатации, Страница: 131 / 206

VLT
®
8000 AQUA
Programming
■
Application functions 400-434
Includes this parameter group, the special functions
of the frequency converter PID regulation, setting of
the feedback range and the Setup of the Sleep mode
function. Additionally, this parameter group includes:
- Reset function.
- Flying start.
- Option of interference reduction method.
- Setup of any function upon loss of load, e.g.
because of a damaged V-belt.
- Setting of switching frequency.
- Selection of process units.
400 Reset function
(RESET FUNCTION)
Value:
✭
Manual reset (MANUAL RESET) [0]
Automatic reset x 1 (AUTOMATIC X 1) [1]
Automatic reset x 2 (AUTOMATIC X 2) [2]
Automatic reset x 3 (AUTOMATIC X 3) [3]
Automatic reset x 4 (AUTOMATIC X 4)
[4]
Automatic reset x 5 (AUTOMATIC X 5) [5]
Automatic reset x 10 (AUTOMATIC X 10) [6]
Automatic reset x 15 (AUTOMATIC X 15) [7]
Automatic reset x 20 (AUTOMATIC X 20) [8]
Infinite automatic reset (INFINITE AUTOMATIC)
[9]
Function:
This parameter allows a choice of whether to reset and
restart manually after a trip, or whether the frequency
converter is to be reset and restarted automatically. In
addition, there is a choice of the number of times the
unit is to attempt a restart. The time between each reset
attempt is set in parameter 401 Automatic restart time .
Description of choice:
If Manual reset [0] is selected, resetting must be
effected via the "Reset" key or via a digital input. If the
frequency converter is to carry out an automatic reset
and restart after a trip, select data value [1]-[9].
The motor may start without warning.
401 Automatic restart time
(AUTORESTART TIME)
Value:
0 - 1800 sec. ✭
10 sec.
Function:
This parameter allows setting of the time from
tripping until the automatic reset function begins. It
is assumed that automatic reset has been selected
in parameter 400 Reset function.
Description of choice:
Set the desired time.
402 Flying start
(FLYING START)
Value:
✭
Disable (DISABLE) [0]
Enable (ENABLE)
[1]
DC brake and start (DC BRAKE AND START) [3]
Function:
This function makes it possible for the frequency
converter to "catch" a spinning motor, which - e.g.
because of a mains failure - is no longer controlled
by the frequency converter. This function is activated
whenever a start command is active.
For the VLT frequency converter to be able to "catch"
the spinning motor, the motor speed must be lower
than the frequency that corresponds to the frequency
in parameter 202 Output frequency high limit, f
MAX
.
Description of choice:
Select Disable [0] if this function is not required. Select
Enable [1] if the VLT frequency converter is to be able
to "catch" and control a spinning motor. Select DC
brake and start [2] if the VLT frequency converter is
to brake the motor with DC braking, and then restart
the motor. It is assumed that parameters 114-116
DC braking are enabled. In the case of a substantial
"windmilling" effect (spinning motor), the VLT frequency
converter will not "catch" a spinning motor unless
DC brake and start has been selected.
✭
= factory setting. () = display text [] = value for use in communication via serial communication port
MG.83.A2.02 - VLT is a registered Danfoss trademark
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