Application of VEICHI AC300 in Synchronous Drive Control System

Date: 2020-11-12 Location: Turkey Product Model: AC300 Category: Synchronous Drive Control System

Overview

With the continuous development of society and the rapid advancement of technology, more and more mechanical work occasions require synchronous control. To improve production efficiency, modern production and processing technologies are automated and continuous production, so higher requirements are put forward for the reliability, economy, speed regulation ratio, and synchronization performance of the drive motor. At present, synchronization control is common in textile, machinery, chemical fiber, steel, electric power, paper, food, chemical, petroleum, wood, and other industries. veichi inverters have related successful application Cases in these industries. The following are some simple related applications.

Application of AC300 frequency inverter in Synchronous Control of Setting Machine

1. Working principle of setting machine

The unshaped cloth is fed into the machine by the stripper open width, and the machine automatically hangs the two ends of the cloth on the needle plate, and the two ends of the needle plate enter the oven with the step of the mechanical operation. The oven is heated by electricity and blown by a fan. It passes through several continuous constant temperature ovens with different temperature sections. After cooling and removing static electricity at the end, the swing falls into the cloth car to obtain a stiff and beautiful cloth.

2. The composition of the setting machine and the role of each part

The setting machine is mainly composed of five parts: feeding part, weft trimmer, chain, oven, doffing and rolling device.

(1) Feeding part

The structure is relatively simple. It consists of a trough and a roller. The cloth enters the trough with chemical materials, and then the excess chemical materials are squeezed clean by the rollers. Therefore, the chemical materials on the cloth are very uniform, which is to obtain high-quality shaping Prerequisites for cloth. What we should pay attention to here is that we should always pay attention to whether the pressure on the left and right sides of the roll is consistent, otherwise, the side with the lower pressure will be loaded with more material, and the side with the higher pressure will be loaded with less material, and the cloth will have quality problems such as inconsistency between left and right.

(2) Weft trimmer

The weft straightener on the current setting machine is Mahlo RFMC94H photoelectric weft straightener. There are four sets of sensors on the Mahlo photoelectric weft straightener. Each sensor includes two parts: light-emitting and photosensitive. The action part adopts a hydraulic system. When the signal of the weft skew size is transmitted back to the control mainboard, the control mainboard will issue a command to drive the hydraulic system to adjust the angle of the curved or straight roller accordingly, thereby correcting the weft skew. Specifically: when there is a difference between the center of the cloth and the two sides, the curved roller will move; when there is a difference between the left and right sides, the straight roller will move.


Setting machine pictures

(3) Chain part

The center of the cloth on the setting machine is produced by the chain. The chain of the setting machine is driven by a high-power motor near the cloth drop. The chain is equipped with a needle plate. When the cloth enters the chain, the cloth is pressed against the needle by the brush wheel on the cloth presser. On the small needles on the board, the cloth can enter the oven under the drive of two chains. The straps of this setting machine are different from other setting machines. It can control the pulling and drawing of each pin clip separately to achieve good results. However, some setting machines cannot adjust each pin clip, but can only be adjusted to a rectangular or trapezoidal shape.


Setting machine picture

(4) Oven body

The setting machine has eight groups of ovens. The air is continuously sprayed on the cloth surface from the fine holes on the star-shaped air-jet frame under the blowing action of the circulating fan. After the hot air contacts the wet cloth, the temperature drops, and the humidity rise, and air jets from the star shape. The large holes on the rack are drained, passed through the filter screen, and then continuously recycled after being heated by the heat exchanger. The heat exchanger is located under the filter screen. The hot coal body used is hot oil. There are many thin fins on the heat exchanger to produce efficient heat exchange.

(5) Cloth doffing and rolling device

The setting machine can adopt two kinds of cloth discharging methods, namely, cloth or roll cloth according to production needs. Both methods are driven by a chain drive by a motor. When the cloth is rolled out, the tension stability of the cloth is required to be higher, and the cloth needs to pass through a tension adjustment guide roller controlled by an air pump. With the orbiting type drop cloth, the cloth does not need to pass through the tension adjusting roller and passes through a fixed guide. With the orbiting type drop cloth, the cloth does not need to pass through the tension adjusting roller and passes through a fixed guide.

3. The number of frequency converters used in the setting machine is about 10 (some process differences may use different numbers). To ensure the synchronization of 10 Frequency converters, the MODBUS 485 communication master-slave control method is adopted. The AC300 series of high-performance Vector Inverters can respond quickly to meet the control process requirements. On the setting machine, it can cooperate with the upper computer PLC and touch screen to form a complete control scheme, making the operation more convenient and simple. The overall control block diagram is as follows:


4. To ensure the synchronization of each motor, determine the mechanical transmission ratio, and plan the various transmission associations, the frequency converter communicates with the host computer in the form of a slave (MODBUS 485 or PROFIBUS DP) to send running commands and frequency settings. The excellent response-ability of our AC300 inverter can quickly respond to commands given by the host computer to ensure the synchronization of the machine.

Parameter setting (MODBUS 485): Parameter setting is simple, fast and convenient!

Function number and setting value Function name Function number and setting value Function name
F00.02=2 Run command given 485 F00.03=6 Frequency setting 485
F13.00=1 Slave selection F13.01 485 communication address
F13.02 Communication baud rate F13.03 MODBUS data format

 

Parameter setting (PROFIBUS DP): After configuring our GSD file in DP, you can use the default PZD1!

Function number and setting value Function name Function number and setting value Function name
F00.02=2 Run command given F00.03=6 Frequency given
F13.00=1 Slave selection F13.27 DP communication address

 

Master station sends data PZD area
Inverter command Inverter target frequency Real-time change of inverter function parameters
PZD1 PZD2 PZD3~PZD10
Inverter response data PZD area
Inverter status Inverter operating frequency Real-time reading of inverter function parameter values
PZD1 PZD2 PZD3~PZD10

 

Application of AC300 frequency converter in synchronous control of the compound machine

1. Overview

TPU composite is a TPU film composite on various fabrics to form a composite material, combining the characteristics of the two to obtain a new type of fabric. TPU can be salivated, blown film, calendered, or coated into a film, with excellent elasticity, toughness, abrasion resistance, good cold resistance, environmental protection, and non-toxicity. There are many small factories in China, most of which buy TPU film from outside film factories, and only complete the process of gluing and bonding. In the post-attachment process, high temperature and high pressure are applied to the TPU film again. Improper process control will cause damage to the film and even small holes. The frequency conversion can control the speed of the motor so that the glue can be slow to the high speed in the production process. When the film is uneven in a certain link, the terminal can be used to control the acceleration and deceleration to achieve the speed of the motor and increase the TPU. The quality and benefit of composite products.

2. The whole set of equipment and working principle on the glue dispense

The whole set of glue dispenser is generally composed of 10 control motors, host, gluing, curling, opening, conveying, water cooling, traction, silicon opening 1, silicon opening 2, and film releasing. The speed of the whole set of motors can be controlled by starting on the control terminal and controlling the total adjustment. When a certain segment of the film is uneven, it can be adjusted by the corresponding trimming potentiometer of the motor, so that the host, gluing, opening, conveying, silica gel The frequency of opening 1 and 2 is the same, and the simultaneous production of products is finally realized.

3. Functions implemented on the glue dispense

The function of the glue dispensing machine on the TPU compound machine is to realize the synchronous operation of the whole set of motors and realize the multi-speed, stable operation, and the tension of each section of the film should be consistent. The following are the characteristics of the compound machine:

  1. Special high-efficiency drying oven to improve drying efficiency and reduce energy consumption.
  2. Adopt the gluing method of anilox roller to spread the glue evenly.
  3. Realize precise synchronous control and multi-point control, easy operation and maintenance.
  4. Individual fine-tuning and total fine-tuning can realize acceleration and deceleration.

Host parameter settings:

Function number and setting value Function name
F00.00=0 or 1 Be consistent with the slave
F00.02=1 Terminal control
F00.03=2 (AI1 given) main potentiometer + trimming potentiometer
F00.09=50 Maximum frequency
F00.11=50 Upper frequency
F00.14 Acceleration time (master and slave keep the same)
F00.15 Deceleration time (master and slave keep the same)
F01.16 Acceleration and deceleration mode (master and slave keep the same)
F02.00=1 Forward running
F13.00=1 Set as host
F13.09=0031 The output frequency and running command sent by the master to the slave can be set according to the actual situation.

 

Slave parameter setting:

Function number and setting value Function name
F00.00=0 or 1 Be consistent with the host
F00.02=2 Communication control
F00.03=6 Communication given
F00.04=2 (AI1 given) Bipolar potentiometer is used to fine-tune the frequency. If the speed of the slave and the master is inconsistent during the speed adjustment, the potentiometer can be adjusted.
F00.05=1 Take channel A set frequency as the reference source, channel B set frequency = channel B frequency set source × channel A set frequency absolute value/maximum frequency), because it is in fine-tuning mode, it is recommended to set F00.05 to 1. Not set to 0
F00.06=2 Frequency combination mode channel A + channel B
F00.09=50 Maximum frequency
F00.11=50 Upper limit frequency
F00.14 Acceleration time (master and slave keep the same)
F00.15 Deceleration time (master and slave keep the same)
F01.16 Acceleration and deceleration mode (master and slave keep the same)
F13.00=0 Set as slave
F13.00=1, 2, 3, 4...... According to the number of slaves, set the slave address

 

Our AC300 frequency converter has many applications in the field of synchronous transmission. It realizes synchronization and proportional linkage between multiple motors. It has the advantages of high cost performance, high control accuracy, fast performance response, simple wiring, and convenient operation. Obtained a good reputation in the industrial control industry. In the future, our company will provide better synchronous transmission solutions, and intensively cultivate and plant seeds in synchronous transmission applications to bring customers a better sense of use.

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