WEG CFW-11 Programming Manual page 129

Description:
These parameters limit the motor current component responsible for producing forward torque (P0169) or reverse
(P0170). The setting is expressed in percentage of the motor rated current (P0401).
In case that any Analog Input (AIx) be programmed for the option 2 (Maximum Torque Current), P0169 and P0170
become inactive and the current limitation will be specified by the AIx. In this case the limitation value can be
monitored at the parameter correspondent to the programmed AIx (P0018 ... P0021).
In the torque limitation condition the motor current can be calculated by:
The maximum torque developed by the motor is given by:
Where:
N = motor synchronous speed,
nom
N = actual motor speed
(*) In case that the current limitation be provided by an analog input, replace P0169 or P0170 by P0018 or
P0019, or, P0020 or P0021, according to the programmed AIx. For more details refer to the section 13.1.1.
P0171 – Maximum forward torque current at Maximum Speed
P0172 – Maximum Reverse torque current at Maximum Speed
Adjustable 0.0 to 650.0 %
Range:
Proprieties: Vector
Access groups 01 PARAMETER GROUPS
via HMI:
P0169 or P0170* x P0401
=
I
motor
100
P0401 x P0169(*) or P0170 x K
T (%)=
motor
(P0401)
2
1 for N ≤ P0190 x N
K =
N x P0190 for N > P0190 x N
nom
N P0400
29 Vector Control
95 Torque Curr.Limit
2
+ (P0410)
2
100
x100
- P0410 x P0178
2
100
nom
P0400
nom
P0400
Vector Control
Factory 125.0 %
Setting:
11-27
11