Medium Voltage AC VFD Drives for Plastic Extruder Machines

Features

Benefits

Open Loop Vector and V/Hz Control with Torque Compensation

Provides excellent breakaway torque for thick materials and constant torque to maintain mixing speeds under heavy loads.

Overtorque Detection

Provides early warning of damaging torque levels as a result of seizing mixer blades.

Torque Reference programmable to an analog output

The applied mixing torque is fine tuned or adjustable for different material.

Preset frequency reference

Preset mixing patterns can be established for different materials.

Auto-Restart after momentary power loss

Mixing can quickly restart after fault or momentary power loss. This keeps perishable foods from spoiling in process.

Power loss Ride-Through

The mixing process in not interrupted during brief power loss (< 5 ms).

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)