The output point and COM point of PLC (MR type or MT type) are directly related to the STF (forward rotation engine) of the inverter. overflow-wrap: break-word !important; ">. RH (high speed), RM (medium speed) important; overflow-wrap: break-word !important; ">, RL (low speed), input SG and other ports are connected separately. The PLC can control the start, stop and reset of the inverter through the program; It can also control different combinations of high-speed, medium-speed and low-speed terminals of the inverter to complete multi-stage speed operation. However, because it is controlled by switching quantity, its speed regulation curve is not a continuous smooth curve, and it cannot complete precise speed adjustment.
Analog signal control of PLC
Hardware: FX1N, FX2N PLC mainframe, equipped with 1-channel simple FX1N-1DA-BD extended analog output board; or analog input-output hybrid module FX0N-3A; or FX2N-2DA with two outputs; or FX2N-4DA module with four outputs, etc.
Advantages: PLC programming is simple and convenient, the speed regulation curve is smooth and continuous, and the operation is stable.
Defects: In the large-scale production line, the control cable is long, especially when the DA module selects the voltage signal output, the line has a large voltage drop, which affects the stability and reliability of the system.
The PLC is controlled by RS-485 communication method
This is a common method of use, PLC uses RS serial communication instruction programming.
Advantages: The hardware is simple, the cost is low, and 32 inverters can be controlled.
Defects: A large amount of programming work.
The PLC uses RS-485 Modbus-RTU communication method
Mitsubishi's new F700 series inverters use RS-485 terminals to communicate with PLCs using the Modbus-RTU protocol.
Advantages: PLC programming in Modbus communication is simpler and faster than in RS-485 protocol-free mode.
Defects: The amount of PLC programming work is still large.
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The cause of the failure caused by OC - Mitsubishi inverter
1. Aging of drive circuit
Due to the long-term use, it will inevitably lead to the aging of components, and then cause the drive waveform to be distorted, and the output voltage will be unstable, so OC alarm often appears as soon as it is running.
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Mitsubishi's introduction to the three-circuit system
Servo motors are generally operated by three circuits. To put it bluntly, the three circuits are three closed-loop control negative feedback PID control systems.
The first innermost PID loop is the current loop, which is implemented completely inside the servo controller. Exercise...
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Mitsubishi takes instructions and outputs instructions
1) LD (take instruction) A command to connect a normally open contact with the left bus, and every logic line that starts with a normally open contact is used with this instruction;
2) LDI (Reverse Instruction) A normally closed contact is connected to the left bus to the instruction, each ...
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There is no self-locking reason for the Mitsubishi servo motor to be turned on
In some cases, when the user first touches the use of the Mitsubishi servo motor, it may appear that the Mitsubishi servo motor is not self-locking after it is ready! So, what is the reason for this? And how to deal with it?
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The role of PLC power module - Mitsubishi
Internal memory programs, logic operations, sequential manipulation, punctuality, counting, arithmetic operations, and other programmable memories are used to manipulate a variety of machinery or production processes with digital or analog inputs/outputs. PLC-related peripherals should be easy to operate with industry to form a whole, easy to expand...
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Mitsubishi 30MA-eX-F40 fiber laser flexible automatic loading and unloading system
The 30MA-eX-F40 fiber laser flexible active loading and unloading system was jointly developed by Mitsubishi Electric Corporation's Laser Division and Mitsubishi Electric Electromechanical Technology Co., Ltd.
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Advantages of Mitsubishi Electric fresh air system
Mitsubishi Electric's fresh air system realizes indoor ventilation, but of course, we can't just be limited to simply replacing the outdoor air into the room, a good fresh air should filter the harmful substances in the air, so that the air entering the room is not only fresh, but also clean and harmless.
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Mitsubishi PLC network structure
1. The equipment layer/fieldbus CC-Link equipment layer is a field network that connects PLC and other control equipment and sensors and drive equipment, which is the low-level network of the entire network system. The CC-Link fieldbus connection is selected, and the number of wiring is greatly reduced, and the system maintainability is improved. Whereas...
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Mitsubishi servo motor realizes positioning function
The motion control command of the PLC realizes the perfect positioning function. Briefly describe the Mitsubishi PLC positioning instructions, which can be divided into origin regression instructions DSZR, ZRN, positioning instructions PLSY, PLSR, DRVI, DRVA, variable speed operation PLSV.3 In the meantime, PLSY and PLSR are pulse output instructions, and their positioning functions are relatively ...
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The choice of industrial tablet case – Mitsubishi
Tablet PC can often be seen in today's daily life, it can be brought stronger, but also more popular with us, industrial tablet PC is gradually widespread, because industrial use will cause Tablet PC is very simple damage, so generally will use maintenance covers, so ...
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Mitsubishi plays an important role in the paper industry
From raw material pulp to papermaking, and then through packaging and logistics, the paper towel finally completes the "transformation" to meet customers. The impression of packaging and quality, coupled with the comprehensive effect of multiple specifications, traceability, high standards, authoritative certification and other factors, will finally win the hearts of customers, and then establish a trustworthy ...
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Mitsubishi servo motor method
1. Torque control: Torque control sets the output torque of the motor shaft through external imitation input or direct address assignment. For example, 10V is equivalent to 5Nm. When the external analog is set to 5V, the output of the motor shaft is 2.5 Nm. If the motor shaft load is less than 2.5 Nm, when the external load is 2.5 N...
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PLC controller and human-machine interface anti-interference countermeasures - Mitsubishi
When carrying out anti-disturbance planning for specific projects, it is necessary to select products with high anti-disturbance ability, and adopt methods such as pressing the disturbance source, cutting off or attenuating the propagation path of electromagnetic disturbance, and using software means to improve the anti-disturbance ability of equipment and systems.
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Mitsubishi Electric develops MEMS LiDAR solutions for autonomous vehicles
TOKYO, March 12, 2020 - Mitsubishi Electric Corporation (TSE: 6503) today announced that it has developed a compact Light Detection and Ranging (LiDAR) solution that integrates microelectromechanical systems (MEMS) that enable ultra-wide horizontal scanning angles in the self-...
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Mitsubishi FX series PLC error command and solution
1. Error message: NO ERROR--No abnormal error occurs
Abnormal content and cause: No abnormal occurrence
Solution: Check whether the cable connection between the host and the I/O expansion base/module is normal
2. Error message: ...
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Introduction to the capacitive role of Mitsubishi inverter
Capacitor is a kind of energy storage element, with the characteristics of "straight through AC, low frequency through high frequency", people in order to know and identify the capacitor in different circuits, according to its effect in the line and give it many titles, the following introduces the meaning of some commonly used titles.
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A brief description of Mitsubishi MELIPC industrial control products
MELIPC's intelligent industrial control product system includes MI50000 analysis categories, MI2000 monitoring strain, and MI1000 gateway category, forming a full range of data collection, processing, and transmission solutions between the FA production site and the IT system, and using edge accounting to complete the self-discipline and sloppy IoT layout.
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Mitsubishi Q Series PLC and GX Works2 connection method
01 USB connection
USB connection requires a device USB driver, generally after installing GX Works2 software, it will automatically install the driver, but a single time due to antivirus software or system reasons, may not be installed, then we need to manually drive the device to the accounting machine. The specific device method we ...
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Pay attention to the wiring of the Mitsubishi PLCI/O terminal
1. Enter the wiring
(1) The input wiring should generally not exceed 30 meters. However, if the environmental disturbance is small and the voltage drop is not large, the input wiring can be appropriately longer.
(2) The input/output lines cannot be separated by the same cable, and the input/output lines should be separated.
(3) As far as possible, choose normally open ...
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Mitsubishi inverter basic questions and answers
1. Question: What is the type of RS485 to RS232C converter used by Mitsubishi inverter for communication?
Solution: FA-T-RS40* Mitsubishi inverter is available.
2. Question: Mitsubishi inverter frequency external potentiometer is given, and the external potential recommended to be used ...
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