WEG CFW-09 - Page 128

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CHAPTER 6 - DETAILED PARAMETER DESCRIPTION
Range
[Factory Setting]
Parameter
Unit
Description / Notes
P136
0 to 9
ManualTorque
[ 1 ]
Boost
1
For V/F Control
(P202 = 0, 1 or 2)
Compensates for the voltagedrop on the motor stator resistance at low
frequencies and increasestheinverteroutputvoltagein order tomaintain
a constant torque in V/F operation.
Always set P136 to the lowest value that permits the motor to start
satisfactorily. If the valueis higher thanrequired, an inverter overcurrent
(E00 or E05) mayoccur due to high motor currents at low frequencies.
Frequency
50 Hz
25 Hz
P136 = 0
0
1/2
Nominal
Nominal
Output Voltage
P136 = 9
Figure 6.4 -
P202 = 0 - V/F 60 Hz curve
Figure 6.5
- P202 = 1 - V/F 50 Hz curve
30 Hz
60 Hz
Frequency
P136 = 9
Nominal
1/2Nominal
0
P136 = 0
Output Voltage