Torque Compensation - Veikong gpd 515/g5 Startup Manual

5 . 4 2 T O R Q U E COMPENSATION
C 4 - 0 2 : Torque Compensation Time
Constant
This parameter adjusts a time delay for the torque compensation gain. Increase to add
torque stability, decrease to improve torque response.
C 4 - 0 1 : Torque Compensation Gain [ K
Sets the torque compensation, in increments
of 0.1. When the motor has the same
capacity as that of the drive, the gain is 1.0.
When a smaller motor is used, the gain should
be set to 1.5 (typical).
This parameter, in conjunction with E 2 - 0 5
(Motor Line-to-Line Resistance) and E 2 - 0 7
& E 2 - 0 8 (Motor Iron Core Saturation
Coefficient 1 & 2), is used by the drive's
automatic torque boost function to match the
drive's output voltage boost to the motor
load. Except for the most demanding of high
starting torque applications, the factory
settings of these parameters will be
adequate. The factory settings are
programmed to match the performance
characteristics of typical AC motors.
The calculation of compensated torque
uses the following formula:
Compensated Value ≈
Where
* WI = E 2 - 0 7, E 2 - 0 8
Rcable = E 2 - 0 5
K = C 4 - 0 1
T
Φ = Power Factor (calculated by the drive)
* Adjusted by Auto-tune feature.
]
T
460
345
230
115
14 V
0
0
1.5 HZ
Example of Torque Compensation
( √ 3
Cos Φ ) – WI – Rcable
Vac Iac
• • •
Frequency
5-93
Factory setting: See Table A3-2
Range: 0 to 10000 ms
Factory setting: 1 . 0 0
Range: 0.00 to 2.50
AUTO TORQUE BOOST
V/F PATTERN
PROGRAMMED V/F PATTERN
30
OUTPUT FREQUENCY
( HZ )
Operation
(NO LOAD)
60
x K
T