WEG CFW-09 User Manual page 196

[Factory Setting]
Parameter
P301
DC Braking Starting
Speed
This parameter
is shown on the
display(s) only when
P202 = 0, 1, 2, 3 or 5
P302
DC Braking
Voltage
This parameter
is shown on the
display(s) only when
P202 = 0, 1, 2 or 5
P303
Skip Speed 1
P304
Skip Speed 2
P305
Skip Speed 3
P306
Skip Band Range
Range
Unit Description / Notes
For the V/F Control, there is a "Dead Time" (motor runs freely) before
the DC braking starts. This time is required in order to demagnetize the
motor and it is a function of the motor speed.
During the DC Braking the LED displays flashes
The DC braking does not work with P202 = 4 (Vector with Encoder
Control).
If the inverter is enabled during the DC braking operation, the braking
process is interrupted and the inverter will return to its normal operation.
0 to 450
This parameter establishes the starting point from where the DC Braking
[ 30 ]
takes place. Refer to figure 6.40.
1 rpm
0.0 to 10.0
This parameter adjusts the DC voltage (DC braking torque) applied to the
[ 2.0 ]
motor during the braking process.
0.1 %
The setting shall be done by gradually increasing the value of P302,
which varies from 0 to 10 % of the rated supply voltage, until the desired
braking torque is reached.
This parameter works only for the V/F and VVW Control Modes. For the
Sensorless Mode, refer to parameter P372.
P133 to P134
[ 600 ]
1 rpm
P133 to P134
[ 900 ]
1 rpm
P133 to P134
[ 1200 ]
1 rpm
0 to 750
[ 0 ]
1 rpm
CHAPTER 6 - DETAILED PARAMETER DESCRIPTION
ATTENTION!
The DC braking may continue working even after the motor has
already stopped. Pay special attention to the motor thermal sizing
for cyclic braking of short time.
Motor
Speed
P305
2 x P306
P304
P303
Figure 6.41 - Actuation of the skip speed
.
2 x
P306
Speed
Reference
197