GE Industrial Solutions AF-300 G11 - Manual (Page 70)

5-17
Data subject to change without notice 7/07. © 2007 GE Drives
F42 Torque vector control 1
F 4 2 T R Q V E C T O R 1
To obtain the most efficient motor torque, the torque
vector control calculates torque according to load, to
adjust the voltage and current vectors to optimum values
based on the calculated value.
Value Operation
0 inactive
1 active
Related Functions P01 to P09
If F42 = 1 (active), the following functions are affected:
1. F09 Torque boost 1 is automatically set to 0.0
(automatic torque boosting).
2. P09 Slip compensation control is automatically
activated. If set to 0.0, the amount of slip compensa-
tion for a standard 3-phase Fuji motor is applied.
Otherwise, the set value is applied.
Use the torque vector control function under the following
conditions:
1. There can only be one motor.
Connection of two or more motors makes accurate
control difficult.
2. The function data (rated current P03, no-load current
P06,, %R1 P07, and %X P08) for Motor 1 must be
correct.
If a standard 3-phase GE motor is used, setting the
capacity (Function P02) ensures entry of the above
data. An auto-tuning operation should be performed
for other motors.
3. The rated current of the motor must not be signifi-
cantly less than the rated current of the drive. A
motor two sizes lower in capacity than the nominal
motor indicated for the drive is the smallest that
should be used.
4. To prevent leakage current and ensure accurate
control,, the length of the cable between the drive and
motor should not exceed 50 m.
5. If a reactor is connected between the drive and the
motor and wiring impedance cannot be disregarded,
use P04 Auto tuning to reset data.
If these conditions are not satisfied, set F42 = 0 (Inactive).