WEG CFW-10 - Page 67

67
CHAPTER 6 - DETAILED PARAMETER DESCRIPTION
Range
[Factory Setting]
Parameter Description / Notes
Figure 6.6 b) cont. - V/F curve and details of the manual torque
boost (I x R compensation)
P137 0.0 to 100 %
Automatic Torque [ 0.0 ]
Boost -
(Automatic I x R
Compensation)
The automatic torque boost compensates for the
voltage drop in the stator resistance as a function of
the active motor current.
The criteria for setting P137 are the same as for the
parameter P136.
Setting P137 = 100 % corresponds to the maximum
increment of the output voltage (30 % of P142).
Output Voltage
(% of the line voltage)
P142
P136
0 P145
Output
frequency
b) P202 = 1
Figure 6.7 - Block diagram of the automatic
torque boost function
Speed
Reference (F*)
Active Output
Current (I
a
)
Filter
I x R
Automatic
P137
I x R
P136
P007
Motor
voltage
Figure 6.8 - V/F curve with automatic torque boost
(automatic I x R compensation )
Compensation
Zone
Maximum
(P142)
Output Voltage
Output
Frequency
Field Weakening
(P145)
4 Hz
0
0.3 x P137 x P142