AC Motor Sensorless Vector Variable Control Frequency Inverter
Drive for Winding
Winding is a procedure to take up and package material in roll
form, for more efficient handling or in preparation for a
subsequent operation. In a typical industrial application, a winder
is employed to roll up a continuous or limited length of material
such as wire, paper, film, metal, or textiles. The winder and
finished roll are referred to by different names in different
industries.
Industry | Winder Name | Roll Name |
Paper, Textile, Film | Winder | Roll |
Wire | Takeup, Reeler | Reel |
Wire | Spooler | Spool |
Metal | Coiler | Coil |
Textile | Beamer | Beam |
Wound materials may be stretchable or non-stretchable. Winding of
stretchable materials is more complex and critical than
non-stretchable materials.
Materials typically wound include:
Generally, plastic film is extensible (stretchable) material, most
other materials can be considered non-extensible. Rolls may be
wound by applying drive torque at its center or its surface. As a
result the two major categories of winders are:
· Center Winders
· Surface Winders
Winder drives are designed to improve the wound package and
eliminate material breakage.
Application Challenges
· Control of a motor under dynamically changing requirements | · Speed and torque need to be controlled |
· Acceleration to a fixed speed, deceleration to zero speed | · High process speed |
· Changes in speed and torque during operation | · Wide speed range |
· Detailed sequencing for flying splices and roll changing | · Changes in processed material |
Features of 303 series winding application
Features | Benefits |
flexible input methods | 1. Speed input-Take running speed of the motor as the control
objective Speed input consists of the main speed input, auxiliary speed input
and inching speed input, etc. The actual effective combined speed
input can be either of the three or the combination of either of
the two. 2. Torque input-Take output torque of the motor as the control
objective Set output torque of the motor directly, particularly suited to
application fields requiring tension control. |
Terminal-Peripheral equipment control | Control start/stop with the contact or button to simply realize the
automation control of the entire equipment system. |
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.
