WEG CFW-09 - Type of Control: Sensorless or Vector with Encoder; (Operation Via Keypad (HMI))

102
CHAPTER 5 - START-UP
5.3.2
Type of Control: Sensorless
or Vector with Encoder
(Operation Via Keypad
(HMI))
ACTION
LED DISPLAY
DESCRIPTION
LCD DISPLAY
Power-upthe inverter
Inverter is ready to be enabled
V
F
D
r
ea
d
y
Enables the access to change
parameters content.
With the factorydefault programming
[P200 = 1 (Password Active)], P000
must be set to 5 to allow parameters
changes
Enter the programmingmode
Press the key. Press the keys
or until P000 is
reached
Press the key to enter the
programming mode
P
a
r
a
m
e
t
e
r
A
c
c
e
s
s
P
0
0
0 = 0
P
a
r
a
m
e
t
e
r
A
c
c
e
s
s
P
0
0
0 = 0
For the majority of the applications, the
Sensorless Vector
Control is
recommended. This modepermitsan operation over a 100:1 speed range,
a speed control accuracy of 0.5 % (Refer to P412 - chapter 6), high torque
and fast dynamic response.
Another advantage of this type of control is a higher immunity to sudden
ACinput voltagevariation and loadchanges, thusavoiding nuisance tripping
due to overcurrent.
The adjustments necessary for a good sensorless control operation are
made automatically.
The
Vector Control with Encoder
Feedback offers the same advantages
as the Sensorless Control described above, with the following additional
benefits:
Torque and speed control down to zero speed (rpm);
Accuracy of 0.01 % in the speed control.
The closed loop vector controlwithencoder requires theuseof theoptional
board EBA or EBB for encoder connection - Refer to chapter 8.
OPTIMAL BRAKING:
This setting allows controlled motor braking within shortest possible
times without using other means, such as DC Link chopper with braking
resistor (for more details about this function refer to P151 – chapter 6).
The inverter is supplied with this function set at maximum. This means
that the braking is disabled. To enable the braking, set P151 according
to table 6.8.
The sequence below is based on the example in item 5.2.