Power Supplies

EM8 Series V/F Control Inverter
Advantage Feature:
1: Wide Voltage Range: 200~240V;320 ~ 480V
2: Input Frequency Range: 45 ~ 65Hz
3: Output Voltage Range: 0 ~ rated input voltage
4: Output Frequency Range: 0 ~ 500Hz
5: Overload Capacity: 60s with 150% of rated current, 2s with 180% of rated current
6: From 0.75 ~ 7.5KW Plastic house; 11 ~ 630KW is metal house
7: Control Mode: High Quality V/F Control
8: Speed Accuracy: V/F + 0.5% of maximum speed
9: 20 channels for frequency setting
10: Analog signal :0 ~ 10V,-10V ~ 10V,0 ~ 20mA.
11: Pulse setting input: 0~50Khz.
12: Built-in RS485 communication port
13: All model are integrated IGBT
14: The malfunction ratio is 0.8% within 18 months warranty.

2.2 Specification
Items Specification
Input Rated voltage and frequency Single Phase 220V,Three Phase 380V, 50/60Hz
Voltage allowable deviation range 200~240V;320V~480V
Output Voltage 0~480V
Frequency 0Hz ~ 500Hz
Over-load capability G3 Series:
150% rated current for 1 minute
180% rated current for 2 seconds
P3 Series:
120% rated current for 1 minute
150% rated current for 2 seconds
Control
character Control mode V/F Control
Freq. Setting resolution Analog terminal input 0.1% of max output frequency
Digital setting 0.01Hz
Panel analog setting 0.4 % of max frequency
External pulse 0.1% of max frequency
Freq. accuracy Analog Input Within 0.2% of max. output frequency
Digital Input Within 0.01% of setting output frequency
External pulse Within 0.1% of max. output frequency
V/F Curve
(Voltage-Frequency character) Base frequency can be set from 5~500Hz arbitrarily, and there are three kinds of curve: constant torque ,Dec torque 1 and Dec torque 2.
Torque Boost Manual Setting: 0~20% of rated output, Auto-boost: Automatically boost torque according to output current.
Auto Energy-saving running Adjust output voltage and slip compensation properly according to output current, which will make the motor working in highest efficiency.