Danfoss VLT FCD 303, Руководство по эксплуатации

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VLT
®
FCD Series
■
Special functions
400 Brake function
(BRAKE FUNCTION)
Value:
✭
Off (OFF)
[0]
Resistor brake
(RESISTOR) [1]
AC brake (AC BRAKE)
[4]
Function:
Resistor brake [1] is selected if the frequency
converter has a brake resistor connected to terminals
81, 82. A higher intermediate circuit voltage is
permitted during braking (generated operation)
when a brake resistor is connected.
AC brake [4] can be selected to improve braking
without using brake resistors. Please note that AC
brake [4] is not as effective as Resistor brake [1].
Description of choice:
Select Resistor brake [1] if a brake resistor is connected.
Select AC brake [4] if short-term generated loads occur.
See parameter 144 Gain AC brake to set the brake.
NB!:
A change of selection will not become
active until the mains voltage has been
disconnected and reconnected.
405 Reset function
(RESET MODE)
Value:
✭
Manual reset (MANUAL RESET)
[0]
Automatic reset x 1
(AUTOMATIC X 1)
[1]
Automatic reset x 3
(AUTOMATIC X 3) [3]
Automatic reset x 10
(AUTOMATIC X 10) [10]
Reset at power-up
(RESET AT POWER UP)
[11]
Function:
This parameter makes it possible to select whether
reset and restart after a trip are to be manual or
whether the frequency converter is to be reset and
restarted automatically. Furthermore, it is possible
to select the number of times a restart is to be
attempted. The time between each attempt is set
in parameter 406 Automatic restart time .
Description of choice:
If Manual reset [0] is selected, reset is to be carried
out via the [STOP/RESET] key, a digital input or
serial communication. If the frequency converter
is to carry out an automatic reset and restart after
a trip, select data value [1], [3] or [10].
If Reset at power-up [11] is selected, the frequency
converter will carry out a reset if there has been a
fault in connection with the mains failure.
The motor may start without warning.
406 Automatic restart time
(AUTORESTART TIME)
Value:
0 - 10 sec. ✭
5 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 405 Reset function .
Description of choice:
Set the required time.
409 Trip delay overcurrent, I
LIM
(TRIP DELAY CUR.)
Value:
0 - 60 sec. (61=OFF) ✭
OFF
Function:
When the frequency converter registers that the
output current has reached the current limit I
LIM
(parameter 221 Current limit ) and remains there
for the preset time, it is disconnected. Can be
used to protect the application, like the ETR
will protect the motor if selected.
Description of choice:
Select how long the frequency converter should
maintain the output current at the current limit
I
LIM
before it disconnects. At OFF parameter 409
Trip delay overcurrent, I
LIM
is not working, i.e.
disconnection will not take place.
✭
= factory setting. () = display text [] = value for use in communication via serial communication port
MG.04.B7.02 - VLT is a registered Danfoss trademark
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