INVT Goodrive270 Series User Manual

Goodrive270 series VFD for fan and pump Basic operation guidelines
-74-
b
f
b
V
Output voltage
Output frequency
Straight-type
Torque -down V/F curve (power of 1.3)
Square-type
Torque -down V/F curve (power of 1.7)
Torque -down V/F curve (power of 2.0)
The VFD also provides multi-point V/F curves. You can change the V/F curves output by the VFD by
setting the voltage and frequency of the three points in the middle. A whole curve consists of five
points starting from (0Hz, 0V) and ending at (motor fundamental frequency, motor rated voltage).
During setting, follow the rule: 0 ≤ f1 ≤ f2 ≤ f3 ≤ Motor fundamental frequency, and, 0 ≤ V1 ≤ V2 ≤ V3 ≤
Motor rated voltage
b
f
Output voltage
f1
f2
f3
V1
V2
V3
b
V%100
Output frequency
Hz
The VFD provides dedicated function codes for the space voltage control mode. You can improve the
space voltage control performance by means of setting.
1. Torque boost
The torque boost function can effectively compensate for the low-speed torque performance in space
voltage control. Automatic torque boost has been set by default, which enables the VFD to adjust the
torque boost value based on actual load conditions.
Note:
 Torque boost takes effect only at the torque boost cut-off frequency.
 If torque boost is too large, the motor may encounter low-frequency vibration or overcurrent. If
such a situation occurs, reduce the torque boost value.

INVT Goodrive270 Series Specifications

General

Brand	INVT
Model	Goodrive270 Series
Category	Water Pump
Language	English