WEG CFW-09 - Page 127

128
CHAPTER 6 - DETAILED PARAMETER DESCRIPTION
P135
(2)
0 to 90
SpeedTransition to I/F
[ 18 ]
Control
1 rpm
The speed at which the transition from Sensorless Vector Control to I/F
(Scalar Control with Imposed Current) occurs. The minimum speed
recommended for Sensorless Vector Control is 18 rpm for 60 Hz motors
and 15 rpm for 50 Hz motors, with 4 poles.
For P135

3 the CFW-09 will always operatein Sensorless VectorMode
when P202 = 3, (there is no transition to the I/F Mode).
The current level to be applied on the motor in the I/F Mode is set at
P136.
Scalar Control with imposed current means onlycurrentcontrol working
with current reference level adjusted byP136. There is no speed control,
just open loop frequency control.
This parame-
ter is shown on the
display(s)onlywhen
P202 = 3
(Sensorless
Vector
Control)
P134
P133
Speed
Reference
0
0
.......................
100 %
0
..........................
10 V
0
.......................
20 mA
4 mA
..................
20 mA
10 V
............................
0
20 mA
.........................
0
20 mA
..................
4 mA
Figure 6.3 a) and b)
- Speed limits considering the “Dead Zone” active (P233 = 1)
Speed
Range
[Factory Setting]
Parameter
Unit
Description / Notes
b)
Sets the current to be applied to the motor when in I/F Mode. I/F Mode
occurs when the motor speed is lower than the value defined by
parameter P135.
P136
0 to 9
CurrentReference
[ 1 ]
for I/F Mode
1
ForSensorless
Vector Control
(P202 = 3)
P136
Current in I/F Mode
% of P410 (Imr)
0
100 %
1
111 %
2
122 %
3
133 %
4
144 %
5
155 %
6
166 %
7
177 %
8
188 %
9
200 %
Table 6.6 -
Current reference for I/F mode