Motor Data [43] And Self-Tuning [05] And [94] - WEG CFW-11 Programming Manual

Torque control range: 10 % to 180 %.
Accuracy: ± 5 % of the rated torque.
When the speed regulator is positively or negatively saturated, then P0169 and P0170 limit the torque current, respectively.
The torque, in percentage, at the motor shaft (showed at P0009) is given by:
Iq* x P0401
T
=
motor
I
HD
Where Iq* (in Volts) is the value read at the analog outputs AO1... AO4.
Settings for torque control:
Torque limitation:
1. Via parameters P0169, P0170 (the keypad (HMI), Serial or Fieldbus). Refer to the
Current Limitation [95] on page
2. Through the analog inputs AI1, AI2, AI3 or AI4. Refer to the
option 2 (maximum torque current).
Speed reference:
3. Set the speed reference 10 %, or more, higher than the working speed. This assures that the speed
regulator output remains saturated at the maximum value allowed by the torque limit adjustment.
NOTE!
The motor rated current must be equivalent to the inverter rated current, in order that the control
has the best possible accuracy.
NOTE!
The torque control with saturated speed regulator has a protection function (to limit the motor
speed without causing a fault). For a winder, for instance, when the material being wound brakes,
the regulator leaves the saturated condition and starts controlling the motor speed, which will be
kept at the speed reference value.

21.6 MOTOR DATA [43] AND SELF-TUNING [05] AND [94]

The parameters for the used motor data setting are listed in this group. They must be adjusted according to the
motor nameplate data, except P0405.
P0398 – Motor Service Factor
P0400 – Motor Rated Voltage
11-28.
Item 13.1.1 Analog Inputs [38] on page
PM Vector Control
Item 11.8.6 Torque
13-1,
21-5
21