Inovance MD330 Manuel utilisateur

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Tension Control Inverter

MD330

User Manual

V0.0

C.TY TNHH TỰ ĐỘNG HÓA VIỆT TRUNG 02413.281.181-0989.984.666

Website:

www.viet-trung.com.vn Đ/c: 194-Nguyễn Trãi-Võ Cường-TP.Bắc Ninh

C.TY TNHH TỰ ĐỘNG HÓA VIỆT TRUNG 02413.281.181-0989.984.666

Website: www.viet-trung.com.vn Đ/c: 194-Nguyễn Trãi-Võ Cường-TP.Bắc Ninh

Contents

Chapter 1 Overview ............................................................................ 1

Chapter 2 Tension Control Principles ............................................... 2

2.1 Schematic diagram for typical curling tension control............. 2

2.2 Tension control scheme .......................................................... 3

Chapter 3 Function Parameter Table ................................................ 8

Chapter 4 Parameter Description .................................................... 21

4.1 Selection of Control Mode .................................................... 21

4.2 Tension setting ..................................................................... 24

4.3 Curling radius calculation ..................................................... 26

4.4 Line speed input ................................................................... 30

4.5 Tension compensation .......................................................... 32

4.6 PID parameters .................................................................... 36

4.7 Auto roll alternation parameter ............................................. 38

4.8 Additional parameters........................................................... 39

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Website:

www.viet-trung.com.vn Đ/c: 194-Nguyễn Trãi-Võ Cường-TP.Bắc Ninh

C.TY TNHH TỰ ĐỘNG HÓA VIỆT TRUNG 02413.281.181-0989.984.666

Website: www.viet-trung.com.vn Đ/c: 194-Nguyễn Trãi-Võ Cường-TP.Bắc Ninh

Chapter 1 Overview

Chapter

Overview

This manual shall be used together with the MD320 User Manual.

This manual only describes the parts related to curling tension. Other

basic functions are described in MD320 User Manual.

When the tension control mode is set as inactive, the inverter has the

same functions are the MD320.

MD330 is used for curling control. It can automatically calculate the

curling radius and is able to realize constant tension when the curling

radius changes. To realize constant torque control in the applications

without curling radius change, MD320 inverter is recommended.

When the tension control mode is selected, the output frequency and

torque of the inverter will be automatically generated by the tension

control function, and the frequency source selection in group F0 will be

inactive.

C.TY TNHH TỰ ĐỘNG HÓA VIỆT TRUNG 02413.281.181-0989.984.666

Website: www.viet-trung.com.vn Đ/c: 194-Nguyễn Trãi-Võ Cường-TP.Bắc Ninh

C.TY TNHH TỰ ĐỘNG HÓA VIỆT TRUNG 02413.281.181-0989.984.666

Website: www.viet-trung.com.vn Đ/c: 194-Nguyễn Trãi-Võ Cường-TP.Bắc Ninh

Chapter 2 Tension Control Principles

Chapter

Tension

Control

Principles

2.1 Schematic diagram for typical curling tension control

Carry-over pinch roll

Fig.1 without tension feedback

Wind up

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Website: www.viet-trung.com.vn Đ/c: 194-Nguyễn Trãi-Võ Cường-TP.Bắc Ninh

Carry-over pinch roll Float

Wind up

Fig.2 With float roll tension feedback

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Website: www.viet-trung.com.vn Đ/c: 194-Nguyễn Trãi-Võ Cường-TP.Bắc Ninh

Chapter 2 Tension Control Principles

2.2 Tension control scheme

There are two ways for tension control: to control the output

torque of the motor and to control the rotation speed of the motor.

MD330 is designed with two tension control modes for the two

methods.

1. Open-loop torque control mode

Open loop means that there is no tension feedback signal, and the

inverter can realize the control through the output frequency or torque

only, which will not be affected if the inverter is in open loop vector

mode or close loop vector mode. The torque control mode means that

the inverter controls the motor’s torque rather than its frequency, and

the output frequency changes automatically following the speed of the

materials.

According to the formula F=T/R (where: F is the material tension, T

is the torque of the wind-up roll, R is the curling radius), if the torque of

the wind-up roll can be adjusted based on the change of the curling

radius, the tension of the materials can be controlled. This is the

C.TY TNHH TỰ ĐỘNG HÓA VIỆT TRUNG 02413.281.181-0989.984.666

Website: www.viet-trung.com.vn Đ/c: 194-Nguyễn Trãi-Võ Cường-TP.Bắc Ninh

principle for tension control in open loop torque mode. The reason for

its feasibility is that the tension of the material is from the torque of the

wind-up roll only, and the torque of the wind-up roll is mainly imposed

on the materials.

The MD series inverter can correctly control the output torque of

the motor in closed loop vector mode (with speed sensor vector control).

However, to use this control mode, encoder must be installed (the

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