Application of CHV Inverter to Tension Control,China Application of CHV Inverter to Tension Control,Application of CHV Inverter to Tension Control Manufacturer.

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Address: No.4 Building, Gaofa Industrial Park, Longjing, Nanshan District, Shenzhen, 518055, China

ZipCode: 518055

Tel: +86-755-86312856 86318602 86318456 (direct line) Mobile: +86 133 169 613 20 /+86 135 100 656 90

Fax: +86-755-8602 8412

Email: wangjian@invt.com.cn

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Application of CHV Inverter to Tension Control

Product Categories: Solution

Company Profile Tel ：+86 755 86312834 86028065 (direct line) Mobile: +86 136 326 868 69 Fax：+86 755 8602 8412 Tel ：+86 755 86312845 86028065 (direct line) Mobile: +86 130 778 019 09 Fax：+86 755 8602 8412 Tel ：+86-755-86312856 86318602 86318456 (direct line) Mobile: +86 133 169 613 20 /+86 135 100 656 90 Fax：+86-755-8602 8412

Product Description:

A copper wire factory in Shenzhen, Guangdong Province uses a dual-inverter-controlled intermediate wire drawing machine. The main drive motor adopts a 37-KW inverter and the winding motor adopts a 5.5-KW inverter. The intermediate wire drawing machine is equipped with annealing mechanism, but it does not have a tension frame. Therefore, a CHV general inverter equipped with a tension control card is adopted for winding. With the tension setting and winding diameter calculating functional module, the machine can implement wire winding at a constant tension. It does not have tension feedback torque control mode. The schematic diagram of tension control is shown as follows:

Schematic Diagram of CHV Winding Free of Tension Feedback

The system contains two inverters. The traction & drawing inverter controls the operating linear speed of the whole system, which can be adjusted through a potentiometer. The wire drawing speed can be adjusted freely once the wire drawing quality is guaranteed. At the same time, the operating frequency of the main drive is outputted to the winding inverter (AI) through the analog quantity (AO), serving as the linear speed signal for calculating winding diameter. The tension of the system can be set through the potentiometer. The winding inverter adopts torque control, and thus an encoder must be installed on the shaft of the winding motor. The encoder is connected to the built-in PG card of the CHV inverters to collect the rotation speed value of the motor.

The winding motor has a built-in brake. Both inverters are set to free stop mode in the case of shutdown. When the wire drawing system starts, two inverters start at the same time. The system will then gradually adjust the set linear speed and accelerate the system until it reaches the desirable production line speed.

Moment of inertia compensation has been added to the special purpose CHV tension control module, which effectively eliminates the problem of tension instability of the system during system acceleration/deceleration arising from inertia.

Set the functional codes of main drive inverter as follows:

P0.00 0: Vector control without PG

P0.01 1: Terminal command channel

P0.03 1: Analog quantity AI1 setting

P0.06 0: A source

P0.11 Acceleration time (based on actual conditions)

P1.08 1: Free stop

P5.02 1: S1 terminal function selection: Forward operation

P6.07 0: Operating frequency (voltage signal 0-10V outputted from AO1, as the set winding linear speed)

Set the functional codes of winding inverter as follows:

P0.00 1: Vector control without PG

P0.01 1: Terminal command channel