VLT
®
5000 Series
Set the switching frequency in parameter 411. If
Possible [1] is selected the switching frequency will
decline at an increasing output frequency.
413
413 Overmodulation function
(OVERMODUL)
Value:
Off (OFF)
[0]
✭On (ON)
[1]
Function:
This parameter allows connection of the overmodu-
lation function for the output voltage.
Description of choice:
Off means that there is no overmodulation of the
output voltage, which means that torque ripple on
the motor shaft is avoided. This can be a good fea-
ture, e.g. on grinding machines.
On means that an output voltage can be obtained
which is greater than the mains voltage (up to 15%).
414
414 Minimum feedback
(MIN. FEEDBACK)
Value:
-100,000.000 - Max. feedback
✭ 0.000
Function:
Parameters 414 and 415 are used to scale the dis-
play text to make it show the feedback signal as the
actual unit proportional to the signal on the input.
This value should be 10% higher than, par. 205
Maximum reference , to keep the VLT frequency
converter from integrating as a response to a possi-
ble offset fault.
This value will be displayed if Feedback [unit] [3] has
been selected in one of parameters 009-012 and in
the display mode. Choose the feedback signal unit
in parameter 416.
Used together with Speed control, closed loop; Pro-
cess control, closed loop and Torque control speed
feedback , (parameter 100).
Description of choice:
Is only active when parameter 203 has been set to
Min-Max [0].
Set the value to be shown on the display when Mini-
mum feedback is obtained on the selected feedback
input (parameter 308 or 314).
The minimum value can be limited by the choice of
configuration (parameter 100) and reference/feed-
back range (parameter 203).
If Speed control, closed loop [1] has been selected
in parameter 100, minimum feedback cannot be set
under 0.
415
415 Maximum feedback
(MAX. FEEDBACK)
Value:
Min. feedback - 100,000.000
✭ 1,500.000
Function:
See description of parameter 414.
Description of choice:
Set the value to be shown on the display when Maxi-
mum feedback is obtained on the selected feedback
input (parameter 308 or 314) . The maximum value
can be limited by the choice of configuration (param-
eter 100).
416
416 Reference/feedbackunit
(REF/FEEDB. UNIT)
Value:
NO UNIT
[0]
✭%
[1]
PPM
[2]
RPM
[3]
bar
[4]
CYCLE/min
[5]
PULSE/s
[6]
UNITSS/s
[7]
UNITS/min
[8]
UNITS/h
[9]
C
[10]
Pa
[11]
l/s
[12]
m
3
/s
[13]
l/min
[14]
m
3
/min
[15]
l/h
[16]
m
3
/h
[17]
kg/s
[18]
kg/min
[19]
kg/h
[20]
t/min
[21]
t/h
[22]
m
[23]
Nm
[24]
m/s
[25]
m/min
[26]
F
[27]
in wg
[28]
gal/s
[29]
ft
3
/s
[30]
gal/min
[31]
ft
3
/min
[32]
✭
= factory setting. () = display text [] = value for use in communication via serial communication port
MG.51.A1.02 - VLT is a registered Danfoss trade mark
147
Programming
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