GANDO INTERNATIONAL (HONGKONG) LIMITED
Gando AC drive, everything can be under controlled
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Sensorless Vector Controllers AC VFD Drive for Plastic Injection Machine
Injection molding is a manufacturing technique for making parts from plastic material. Heated, fluid plastic is injected at high pressure into a mold, which is the inverse of the desired shape. The steel or aluminum mold is machined with the contours of the final product. Injection molding is used for create a variety of parts, like plastic milk cartons, containers, bottle caps, automotive dashboards, pocket combs, and most other plastic products available today. Injection molding is the most common method of part manufacturing. AC drives will commonly be used to power the hydraulic oil pressure pump for operating the mold works of an injection-molding machine. Servo drives can be used to operate the injection screw, as precision control is often required for the injection step. Significant energy savings are often realized by replacing hydraulics with electric drive systems on injection molding machines.
Application Challenges
Features of 303 series injection application
|
Features |
Benefits |
|
Analog Input Terminal |
4 routes analog input: 2 routes 0~10V voltage source, 2 routes current source 0~20mA input injection card accepts 0-1A signal |
|
Terminal-Peripheral equipment control |
Control start/stop with the contact or button to simply realize the automation control of the entire equipment system. |
|
DC Braking |
Braking frequency: 0.1~60Hz Braking time: 0~30 seconds Braking current: 0~100% rated current |
Power range of 303 VFD
Voltage: 3 phase 380VAC(304VAC – 460VAC)
Power: 0.75kw/1HP – 400kw/535HP
Specification of 303 VFD
|
Item |
Specification |
|
Input frequency |
50/60Hz |
|
Output frequency |
0-600Hz |
|
Overload current |
150% rated current 1min., 180% 2 sec. |
|
Control mode |
sensor-less vector control(SVC), V/F control |
|
Starting torque |
150% 1Hz (SVC 150% 0.5Hz) |
|
Control precision |
±0.5% |
|
Given Frequency Resolution |
Digital given: 0.01Hz, analog given: 0.05Hz |
|
Running Mode |
Keyboard, control terminal (two-line control, three-line control), RS485 |
|
Output Voltage self-adjustment |
When AVR function is enabled, the input voltage changes, while the output voltage almost remains unchanged |
|
Frequency setting signal |
0~+10V; 0~20mA; |
|
Protection function |
Short circuit, overcurrent, overload, overvoltage, undervoltage, default phase, overheating, and external fault, etc. |
|
Enclosure |
IP20 |
|
Cooling mode |
forced air cooling |
|
Vibration |
Less than 0.5g |
|
Ambient temperature / Humidity |
-10 Degrees~+40 Degrees / 20~90%Rh (no condensation) |
Tips:
A variable-frequency drive (VFD) is a system for controlling the rotational speed of an alternating current (AC) electric motor by controlling the frequency of the electrical power supplied to the motor. A variable frequency drive is a specific type of adjustable-speed drive. Variable-frequency drives are also known as adjustable-frequency drives (AFD), variable-speed drives (VSD), AC drives, microdrives or inverter drives. Since the voltage is varied along with frequency, these are sometimes also called VVVF (variable voltage variable frequency) drives.