FCM 300 Series
MG.03.B6.2G - VLT is a registered Danfoss trademark
✭
=
General factory setting - also applying to spare part unit, H
H
H
H
H = HVAC setting, IIIII = Industrial setting, ( ) = parameter
window text. [ ] = value for use in communication via serial communication port
405 Reset function (RESET MODE)
Settings:
H
Automatic reset x 10 (AUTOMATIC X 10)
[10]
★
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 6 (AUTOMATIC X 6)
[6]
Automatic reset x 7 (AUTOMATIC X 7)
[7]
Automatic reset x 8 (AUTOMATIC X 8)
[8]
Automatic reset x 9 (AUTOMATIC X 9)
[9]
Reset at power-up (RESET AT POWER UP)
[11]
Function:
This parameter makes it possible to select the reset
function desired after tripping.
After reset, the FCM 300 can be restarted after 1.5
sec.
Description of choice:
If
Manual reset
[0] is selected, reset must be
effected via the digital inputs.
If the FCM 300 is to carry out an automatic reset
(max. 1-10 times within 10 minutes) after tripping,
select data value [1]-[10].
Warning:
The motor may start without
warning up to 10 x 5 sec. after trip.
411 Switching frequency (SWITCH FREQ.)
Settings:
1.5 -14.0 kHz
[1500 - 14000]
★
Unit dependent
Function:
The setting determines the switching frequency of
the inverter. If the switching frequency is changed,
this may help to minimize possible acoustic noise
from the motor.
Description of choice:
When the motor is running, the switching frequency
is adjusted in parameter 411 until the frequency has
been obtained at which the motor is as low-noise as
possible.
See also parameter 446 - switching pattern.
NOTE!
Switching frequencies higher than 4 kHz may cause
thermal trip depending on ambient temperature.
412 Variable switching frequency
(VAR CARRIER FREQ)
Settings:
Not possible (DISABLE)
[0]
Variable switching freq. (VAR. CARRIER FREQ.) [1]
★
Temperature dep. sw. freq. (TEMP. DEP. FREQ.) [2]
Function:
This function makes it possible to change the
switching frequency depending on the load.
However, the maximum switching frequency is
determined by the value set in parameter 411.
Description of choice:
Select
Not possible
[0] if a permanent switching
frequency is desired. Set the switching frequency in
parameter 411.
If
Variable switching frequency
[1] is selected the
switching frequency will decline at an increasing
output frequency. This is used in applications with
square torque characteristics (centrifugal pumps and
fans) in which the load declines depending on the
output frequency.
Parameter Group 4: Special functions
400 Brake functions (BRAKE FUNCTIONS)
Settings:
★
OFF (OFF)
[0]
AC brake (AC BRAKE)
[4]
Function:
Description of choice:
AC brake
[4] can be selected to improve braking.
Select
AC brake
[4] if short-term generated loads
occur.
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