VLT
®
FCM Series
Description of choice:
Set the desired time.
127 DC brake cut-in frequency
(DC BRAKE CUT-IN)
Value:
0.0 - f
MAX
(PARAMETER 202)
[0 -]
0.0 Hz = OFF
[0]
DC braking see P132
Function:
This parameter is for setting the DC brake cut-in
frequency at which the DC braking voltage (parameter
132) is to be active, in connection with a Stop command.
Description of choice:
Set the desired frequency.
128 Motor thermal protection
(MOTOR THERM. PROTEC.)
Value:
✭
Disable (DISABLE)
[0]
Enable (ENABLE)
[1]
Function:
FCM always disable [0]
Description of choice:
If
Disable
[0] is selected no tripping is required
when the motor is overloaded.
132 DC braking voltage
(DC BRAKE VOLTAGE)
Value:
0 - 100 %
[v0-100]
✭
0 %
[0]
Function:
DC braking:
If the stator in an asynchronous is supplied with
DC voltage, a braking torque will arise.
The braking torque depends on the selected
DC braking voltage.
For applying a braking torque by means of DC
braking the rotating field (AC) in the motor is
exchanged with a stationary field (DC)
The DC braking will be active when below cut
in frequency and stop is activated at the same
time. P126, R127 and P132 are used for the
control of the DC braking.
The DC braking can also be activated directly
by a digital input.
Function:
The braking torque depends on the selected DC
braking voltage. The DC braking voltage is stated as
a percentage of maximum braking voltage.
Description of choice:
Set the desired voltage as a specified percentage
of maximum braking voltage.
NB!:
The DC braking voltage cannot be used
as a holding brake.
133 Start voltage
(START VOLTAGE)
Value:
0.00 - 100.00 V
[0-10000]
✭
Depends on motor
Function:
You can set the motor voltage below the field weakening
point independently of the motor current. Use this
parameter to compensate too low starting torque.
The start voltage is the voltage at 0 Hz.
NB!:
If the start voltage is set too high, it can lead
to magnetic saturation and motor overheating;
the FC motor may trip. Therefore take
care when using the start voltage.
Description of choice:
Set the desired start voltage.
134 Load compensation
(LOAD COMPENSATION)
Value:
0.0 - 300.0 %
[0-3000]
✭
100.0 %
[1000]
Function:
In this parameter, the load characteristic is set. By
increasing the load compensation, the motor is given an
extra voltage and frequency supplement at increasing
loads. This is used e.g. in motors/applications in
✭
= factory setting. () = display text [] = value for use in communication via serial communication port
MG.03.H3.02 - VLT is a registered Danfoss trademark
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