Origin	China
Model Number	VFD-E series
Brand Name	avespeed

VFD-E series AC DRIVER(frequency inverter) is designed for water supply at constant pressure. It can switch as many as 7 pumps, each of them enjoying fee manual or automatic control with no influence on the other pumps working. The total number of pumps to be switched to can be set from the keypad program, with setting value of 2-4 for multi-pump circulation frequency conversion. Instantaneous impact on value while being switched between pumps can be avoided through special processing. All the individual pumps can operate under even load through logic arrangement incase a certain pump may risk erosion due to long idling. 

Technical Data for VFD-E Series Inverter
1. Input power
Rated Voltage: 3phase 380V±10%
Rated frequency: 50/60Hz

2. Output
Control mode: Voltage vector control
Frequency range: 1.00-150.00HZ
Frequency resolution: 0.01Hz
V/F compensation: V/F compensation curves to be set between 1-8
Overload capacity: 150% (rated current), 1 minute

3. Operation functions:
Frequency setting: Keypad and external analogue signal (0-5V, 0-10V, 0-20MA)
On/off control: Passive contact control or keypad control
Speed up/down time: 0.1-3000s( to reach the change time for 50HZ).
Protection: Under voltage, out phase, over-voltage, over-current, overload, overheat

4. Display
Frequency: LED-screen displays the current type of output frequency, output voltage, output current and codes.
Malfunction: LED-screen displays the type of trouble.
Status: LED lights indicate the current working states.

5. Conditions:
Equipment location: No tangy active gases or dust
Ambient temperature: -10°C-50°C
Ambient humidity: Below 90% (no bead coagulation)
Vibration intensity: Below 0.5G
6.Matched motor: 0.4KW-110KW

The Functions:
1) Built-in PID Adjuster and Positive/Negative Feedback Control
2) Presetting for Pressure or Flow
3) Constant Pressure Control and Constant Flow Control
4) Logic Unit for Circulating Inverting and fixed Inverting Control.
5) Dynamical Display for the Value of the Controlled Parameters.
6) In-between Rely Control Unit for system Configurations.
7) Pump Control Function for Fire Fighting.
8) Timing Control of water Supply.