WEG CFW501 V1.8X Programming Manual page 80

V/f Scalar Control
P0136 – Manual Torque Boost
Adjustable
Range:
Properties:
Access groups
via HMI:
Description:
This parameter actuates in low speeds, that is, in the range from 0 to P0147, increasing the inverter output
voltage to compensate the voltage drop in the motor stator resistance so as to keep the torque constant.
The optimum setting is the smallest value of P0136 which allows the motor satisfactory start. A value greater
than necessary will excessively increase the motor current at low speeds, which may lead the inverter to a fault
condition (F0048, F0051 or F0070) or alarm condition (A0046, A0047 or A0050), as well as motor overheating.
Figure 9.3: Torque boost region on page 9-4
points P and P .
0 1
9
9-4 | CFW501
0.0 to 30.0 %
V/f
BASIC, MOTOR
Output
voltage (%)
P0142
P0143
P0144
P
1
P0136
P
0
P0147
Figure 9.3: Torque boost region
shows the region of actuation of the Torque Boost between
P
3
P
2
P0146 P0145 P0134
Factory According
Setting: to inverter
model
P
4
Output
speed (rpm)