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1000kw / 1250HP AC Variable Frequency Inverter Drives for Metalforming
Metalforming is the process of shaping parts or structures out of metal, by bending, stamping, casting, or shearing.
Metalforming covers a wide range of work, from large ships, bridges and oil refineries, to delicate jewelry. It includes a wide range of skills and requires the use of many different types of tools.
Industrial metalforming machines are used in industries such as Aerospace, Automotive, Tool-making, Home Appliance and Agricultural Machinery. Industrial machines are typically installed as capital equipment.
Various types of metalforming machines:
· Forging Machines |
· Die Forming Machines |
· Bending Machines |
· Presses |
· Shearing Machines |
· Punch Presses |
Application Challenges
· Fast acceleration/deceleration |
· Complex I/O interface |
· Large speed range, high speed operation |
· Continuous operation, repeated forward /reverse |
· High speed and position accuracy |
· Constant high torque production |
· Orientation or positioning |
· Low vibration |
· Low maintenance, durability |
· Fast stopping |
Features of G7 series matching decanter metalforming
Features |
Benefits |
Current Limit |
Spindle motor can accelerate up in current limit thus providing the fastest acceleration rate possible. |
Built-in Dynamic Braking Transistor for commonly used Drive sizes in the Machine Tool Industry |
Reduced costs when applying Dynamic Braking in order to achieve fast deceleration |
Overtorque Detection |
The drive can warn the user of a damaging load related fault situation before it occurs by using Overtorque and/or Undertorque Detection. This is useful to detect any wear or damage along the cutting blades or bits. |
BCD/Binary Digital Input (DI-08, 16 options) |
· I/O Interface with numerical controls (NC) · Multi-function Inputs and Outputs · Speed Agree Output |
Energy Saving Mode |
Suppress any vibration or instability that occurs when performing light machining for the finishing of the work piece. |
Zero-Servo and Orientation Function |
Stop at a fixed location |
Maximum Frequency |
High speed operation for smooth surface finishing Variable speed levels can be set by the user with a maximum of 400Hz |
Power range of G7 VFD
Voltage: 400VAC (380VAC – 460VAC)
Power: 22kw/30HP – 1000kw/1250HP
Specification of G7 VFD
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) |
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.