Paper Mill in India - INVT Goodrive35 Series Close Loop Vector Control Inverter

Release time：2020-04-03

Click amount： 2047

Abstract: This paper mainly presents INVT GD35 series close loop vector control inverter used for paper mill controlling multi motors through CANopen communication protocol.

Keywords: GD35, close loop control, CANopen communication.

I.Introduction

The major processes of paper industry are Pulping, modulation, manufacture and processing.

1) Pulping is the first step of paper making. Wood will be turned to pulping in this process.

2) Modulation is an important process. It determines the paper quality, like strength, color, printing, storage period.

3) Manufacture is making the raw paper to shipping roll. The major processes are filtering raw paper, pressing, winding, cutting, packing.

Schematic diagram of paper making process

II.Project information and Solution

1. Project information

This paper mill designed capacity is 40Ton annually. It requires 88 nos drive upto 132kW. The major applications name and motor ratings are as follows:

SN	Drive Name	INVT drive	Output reactor	Motor KW	Qty
1	Couch Roll	GD35-132G-4-C1	OCL2-132-4	110	1
2	Press 1	GD35-090G-4-C1	OCL2-090-4	55	1
3	Press 2	GD35-090G-4-C1	OCL2-090-4	55	1
4	Pre Dryer 1	GD35-037G-4-C1	OCL2-037-4	30	1
5	Pre Dryer 2	GD35-037G-4-C1	OCL2-037-4	30	1
6	Post Dryer	GD35-037G-4-C1	OCL2-037-4	30	1
7	Size Press Top & Bottom	GD35-018G-4-C1	OCL2-018-4	15	2
8	Post Dryer	GD35-037G-4-C1	OCL2-037-4	30	1
9	Pope Reel	GD35-030G-4-C1	OCL2-030-4	22	1
10	Fan Pump	GD35-110G-4-C1	OCL2-110-4	75	1
11	Head Roll	GD35-5R5G-4-C1	OCL2-5R5-4	2.2	1

Dryer section photos are as below:

2. INVT solution

In order to realize high accuracy and high response speed, GD35 is applied for this paper mill along with Canopen communication card, the system diagram is as below:

III. System commissioning

After the mechanical installation, power on and follow the below commissioning steps:

A, Restore the factory setting

B, Set the motor parameters and perform the motor autotune.

C, Set the encoder, communication, input terminals parameters

D, Coordinate with PLC, test the system

Control panel

GD35 inverters

IV. Advantages and benefits

• Close loop vector control, high accuracy.

• CANopen communication, fast and stable communication.

Speed ratio	1:1000
Speed control accuracy	±0.02%
Servo control	Pulse given set, you can positioned anywhere in control
Divider output Torque response	<10ms
Torque control accuracy	≤5%
Starting torque	0.00Hz/200%
Overload capacity	150% of rated current for 1 minute, 180% of rated current for 10 seconds, 200% rated current for 1 second
Divider output	Encoder pulse divider output (H1, D1-type terminals)
Speed / position mode switch	Support Terminal switch
Encoder	A1 inverter supports 200kHz, B1, C1 inverter supports 100kHz, D1 inverter supports 500kHz, H1 inverter supports 300kHz
Positioning performance	Support Z pulse and photoelectric switch positioned, accurate positioning without overshoot

V. Conclusion

GD35 series close loop vector control inverter is successfully used in paper mill processes, and performance, accuracy and stability all meet the process requirement.