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CHAPTER 6 - DETAILED PARAMETER DESCRIPTION
Range
[Factory Setting]
Parameter
Unit
Description / Notes
This parameter adjusts the DC voltage (DC braking torque) applied to
the motor during the braking process.
The current level set at this parameter represents a percentage of the
inverter rated current.
This parameter works only for the Sensorless Vector Control.
P372
0.0 to 90.0
DC Braking
[40.0]
Current Level
0.1 %
This para-
meter is shown on
the display(s)
only when P202 = 3
(Sensorless)
It is used in functions of the digital and relay outputs: F > Fx.
P370
0.0 to 15.0
Hysteresis for Fx
[2.0]
0.1 Hz
The DC braking at start consists of applying a DC current to the motor
between the “Start” command and the motor acceleration.
This parameter adjusts the DC braking time at start for the VVW and
Sensorless Vector Control Modes.
If the inverter is disabled during the DC braking operation, the braking
process will continue until the braking time set at P371 finishes. After
that the inverter returns to the “RDY” state.
The DC braking at start is not available for:
- The V/Hz and Vector with Encoder Control Modes;
- Start commands through the serial and Fieldbus interfaces with P202 = 3;
- When P211 = 1;
- When the Flying Start function is set (P320
1).
The DC current level is set at P302 (VVW) and P372 (sensorless).
During the DC Braking the LED displays flashes
.
P371
0.0 to 15.0
DC Braking Time
[0.0]
at Start
0.1 s
This parameter
is shown on the
display(s) only when
P202 = 3 (Sensorless)
or 5 (VVW)
P398
(1)
0 or 1
Slip Compensation
[1]
During Regeneration
-
This para-
meter is shown on
the display(s) only
when P202 = 5
(VVW)
Table 6.58 -
Slip compensation during regeneration
P398
Function
0
Off
1
On
This parameter sets the motor rated efficiency;
This parameter is important to the correct operation of the VVW Control.
The incorrect setting of this parameter results in the incorrect calculation
of the slip compensation;
The default value of this parameter is automatically set when parameter
P404 is modified. The suggested value is valid only for IV pole standard
three-phase WEG motors. The user shall set this parameter manually
for other motor types.
P399
(1)(2)
50.0 to 99.9
Rated Motor
[According to the
Efficiency
motor rated power
(P404)]
0.1 %
This para-
meter is shown on
the display(s) only
when P202 = 5
(VVW)
