Magnetek GPD 315, Technical Manual

Page: 73 / 119

5-37
n0103 :
Torque Compensation Gain (K
T
) Factory setting: 1.0
Range: 0.0 to 2.5
Torque Compensation Gain (n103) adjusts how
much the output voltage is boosted when motor
load increases. It is used to compensate for
resistive losses in the motor and the wiring
between the drive and the motor. Torque
compensation is only active when the GPD Drive
is in the V/f control mode.
n0104 :
Torque Compensation Time Constant Factory setting: See Table A3-2
Range: 0.0 to 2.5 (sec)
n0105 :
Torque Compensation Iron Loss Factory setting: See Table A3-1
Range: 0.0 to 6550 W
n0109 :
Torque Boost Factory setting: 150%
Range: 0 - 250%
This parameter functions similarly to n103, but is only effective when the GPD Drive is in the Open
Loop vector control method.
Except for the most demanding of high starting torque applications, the factory settings of these
parameters will be adequate. The factory settings are set up to match the performance of typical
AC motors.
OUTPUT FREQUENCY
( HZ )
OUTPUT VOLTAGE
( VAC )
460
345
230
115
14 V
0
0
1.5 HZ
30 60
PROGRAMMED V/F PATTERN
(NO LOAD)
AUTO TORQUE BOOST
V/F PATTERN
Example of Torque Compensation
Operation
5.26 TORQUE COMPENSATION