VLT
®
8000 AQUA
NOTE
Switching frequencies higher than 4.5
kHz implement automatic derating of the
maximum output of the AFD. See
Derating
of high switching frequency
.
408 Interference reduction method
(NOISE REDUCTION)
Value:
✭
ASFM (ASFM)
[0]
Fixed switching frequency
(FIXED SWITCHING FREQ.)
[1]
LC filter fitted (LC-FILTER CONNECTED)
[2]
Function:
Used to select different methods for reducing the
amount of acoustic interference from the motor.
Description of choice:
ASFM
[0] guarantees that the maximum switching
frequency, determined by parameter 407, is used
at all times without derating of the AFD. This
is done by monitoring the load.
Fixed switching frequency
[1] makes it possible to set a
fixed high/low switching frequency. This can generate
the best result, as the switching frequency can be set
to reduce acoustic noise in the motor. The switching
frequency is adjusted in parameter 407
Switching
frequency
.
LC-filter fitted
[2] is to be used if an LC-filter
is fitted between the AFD and the motor, as the AFD
will otherwise not be able to protect the LC-filter.
409 Function in case of no load
(FUNCT. LOW CURR.)
Value:
Trip (TRIP)
[0]
✭
Warning (WARNING)
[1]
Function:
This function is activated when the output current goes
below parameter 221
Warning: Low current.
Description of choice:
In the case of a
Trip
[1], the AFD will stop the motor.
If
Warning
[2] is selected, the AFD will give a warning
if the output current drops below the threshold value
in parameter 221
Warning: Low current, I
LOW
.
410 Function at line failure
(MAINS FAILURE)
Value:
✭
Trip (TRIP)
[0]
Autoderate & warning
(AUTODERATE & WARNING)
[1]
Warning (WARNING)
[2]
Function:
Select the function which is to be activated if the line
imbalance becomes too high or if a phase is missing.
Description of choice:
At
Trip
[0] the AFD will stop the motor within a
few seconds (depending on drive size).
If
Autoderate & warning
[1] is selected, the drive will
export a warning and reduce the output current
to 30 % of I
VLT,N
to maintain operation.
At
Warning
[2] only a warning will be exported when
a line failure occurs, but in severe cases, other
extreme conditions might result in a trip.
NOTE
If
Warning
has been selected, the life
expectancy of the drive will be reduced
when the line failure persists.
NOTE
At phase loss the cooling fans cannot
be powered and the AFD might trip on
overheating. This applies to
IP 20/NEMA 1
•
VLT 8042-8062, 200-240 V
•
VLT 8152-8600, 380-480 V
•
VLT 8100-8300, 525-600 V
IP 54
•
VLT 8006-8062, 200-240 V
•
VLT 8016-8600, 380-480 V
•
VLT 8016-8300, 525-600 V
✭
= factory setting. () = display text [] = value for use in communication via serial communication port
MG.80.A7.22 - VLT is a registered Danfoss trademark
130
Rosewood STP ST42 General (Operation and Maintenance Manual - Part 4:
Section 6.3 Manufacturers Manuals 6.3.33 Danfoss VLT Aquadrive 8000) Vendor Manual
QP Id: VM207
Active: 03/09/2013
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