AC Variable Frequency Inverter Drives VFD for Screw Feeder 400V

Features

Benefits

Open Loop and Closed Loop Flux Vector Motor Control

Excellent speed stability and low speed torque production is possible due to Flux Vector Control technology.

Overtorque and Undertorque Detection

Both the Overtorque and the Undertorque Detection functions can sense if there is an overloaded feeder or lack of material.

PID

Accurate and quick response control of material into the production process

Auto-Restart after momentary power loss.

Feeders can quickly restart after fault or momentary power loss.

Power loss Ride-Through

The material feed is not interrupted during brief power loss.

Torque Limit

Use of Torque Limit can prevent screw or gear damage due to excessive torque from foreign material in the load.

Item

Specification

Input frequency

50/60Hz

Output frequency

0-400Hz

Overload current

150% rated current 1min.

Control mode

Close-loop vector control,  sensor-less vector control,  V/F control

Starting torque

150% 1hz (with PG 0hz)

Control precision

±0.2% (With PG ±0.02%)

Torque precision

±5%

Setting frequency resolution

Digital command 0.01hz; analog command 0.03hz/60hz

Output frequency resolution

0.01Hz

Frequency setting signal

-10V~+10V；0~+10V(20kΩ)；4~20mA

Protection function

Over voltage, under voltage, over load, relay, overheat speed stall, grounding, instant power cut compensation( within 2 sec for operation mode. Continue to operate after the power is available), Charging protection( not to display when the dc voltage of main circuit is less than 50v)

Enclosure

IP20

Cooling mode

forced air cooling

Vibration

Less than 0.2g for 20hz

Ambient temperature / Humidity

-10 Degrees~+40 Degrees / 20~90%Rh (no condensation)