Danfoss VLT DMS 300 Manual page 138

I before it disconnects. At OFF parameter 409
LIM
Trip delay overcurrent, I
LIM
disconnection will not take place.
411 Switching frequency
(SWITCH FREQ.)
Value:
3000 - 14000 Hz
Function:
The set value determines the switching frequency of the
inverter. If the switching frequency is changed, this may
help to minimize possible acoustic noise from the motor.
NOTE
The output frequency of the variable frequency
drive can never assume a value higher than
1/10 of the switching frequency.
Description of choice:
When the motor is running, the switching frequency
is adjusted in parameter 411 Switching frequency
until the frequency has been obtained at which the
motor is as low-noise as possible.
NOTE
The switching frequency is reduced
automatically as a function of the load.
See Temperature-Dependent Switching
Frequency under Special Conditions .
413 Overmodulation function
(OVERMODULATION)
Value:
Off (OFF)
On (ON)
Function:
This parameter allows connection of the
overmodulation function for the output voltage.
Description of choice:
Off [0] 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 feature, e.g. on grinding machines.
= factory setting. () = display text [] = value for use in communication via serial communication port
138
is not working, i.e.
4500 Hz
Decentral Solutions
On [1] means that an output voltage can be obtained
which is greater than the AC line voltage (up to 5 %).
414 Minimum feedback, FB
(MIN. FEEDBACK)
Value:
-100,000.000 - par. 415 FB
Function:
Parameter 414 Minimum feedback, FB
Maximum feedback, FB
display text to make it show the feedback signal in a
process unit proportionally to the signal on the input.
Description of choice:
Set the value to be shown on the display as the
minimum feedback signal value on the selected
feedback input (parameters 308/314 Analog inputs).
415 Maximum feedback, FB
(MAX. FEEDBACK)
Value:
FB - 100,000.000
MIN
Function:
See description of parameter 414 Minimum
feedback, FB
MIN
Description of choice:
Set the value to be shown on the display when the
maximum feedback has been obtained on the selected
feedback input (parameter 308/314 Analog inputs).
[0]
[1]
416 Process units
(REF/FEEDB. UNIT)
Value:
No unit (NO UNIT)
% (%)
ppm (PPM)
rpm (RPM)
bar (BAR)
Cycles/min (CYCLE/MI)
Pulses/s (PULSE/S)
Units/s (UNITS/S)
Units/min. (UNITS/MI)
Units/h (UNITS/H)
MG.90.F2.22 - VLT is a registered Danfoss trademark
MIN
MAX
MIN
are used to scale the
MAX
MAX
.
0.000
and 415
1500.000
[0]
[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]