(1) Ladder diagram
Programming language is traditionally called a ladder diagram. The ladder diagram follows the method of relay control circuit, and it can also be said that the ladder programming language is a simplified symbol evolution on the basis of the relays and contactors commonly used in the electrical control system, which has an image, intuitive, and useful, and is simply accepted by electrical technicians, and is a PLC programming language that is now used more.
(2) Instruction Table
This programming language is a mnemonic programming method similar to the assembly language of a computer, which uses a statement table composed of a series of operation instructions to hot-core the control process and send it to the PLC through the programmer.
(3) Sequential function diagram
The SFC (Sequential Function Chart) language of the IEC specification is used to compile messy sequential control programs. Using this advanced programming method, beginners can easily program messy sequential control programs, which greatly improves work efficiency and brings a lot of convenience to debugging and trial operation.
(4) Condition handling diagram
Similar to the sequence function diagram, it can further simplify the programming of the messy sequential control system.
(5) Logical utility diagram
It basically follows the logic gates and logic block diagrams in digital circuits. A block diagram is usually used to illustrate a function. Manipulation logic is often completed by three functions: "and", "or", and "not". The International Electrotechnical Commission (IEC) is now implementing the development of this programming specification.
(6) Grade Speech
PLCs introduced in recent years, especially large PLCs, have begun to be programmed using level languages, and after level language programming, users can operate PLCs in the same way as if they were using PCs. In addition to the function of logical operation, it can also carry out PID conditioning, data collection and processing, host computer communication, etc.
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Mitsubishi inverter encountered problems and solutions
1. If you want to use the inverter to drive the motor with a capacitor to improve the power factor, but the motor does not move, please explain the reason.
The current flowing into the inverter is used to improve the power factor, but the capacitor cannot be started because its charging current causes the inverter overcurrent (OCT), as a countermeasure, ...
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Software or hardware reasons for Mitsubishi PLC crash
1. Hardware
(1) I/O channeling, the PLC automatically detects the I/O fault and enters the STOP mode.
(2) The I/O is damaged, and the program runs to the response signal that needs the I/O, and cannot execute the instruction downward.
(3) Expansion module (functional, such as A/D) ...
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Mitsubishi inverter E6 and E7 are faulty
E6, E7 fault for the majority of users must not be unfamiliar, this is a more common Mitsubishi inverter typical problem, of course, the cause of damage is also multifaceted.
IC 1302H02 is damaged, which is a piece of integrated drive ...
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Mitsubishi Electric one-click adjustment user instruction mode tuning method
1. Set PA08 to 0003 and set the gain adjustment form to; , the function is to prevent the failure of the active calculation of the inertia ratio, and the alarm C005 will be given.
2. Flip it over; menu; , set the speed/acceleration and deceleration/movement amount, according to the actual situation ...
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The protection function of the inverter to the motor - Mitsubishi
The inverter is the control equipment for the operation of the motor, and it has a certain maintenance function for the motor. Most of the inverter appliances have functions such as overvoltage, overcurrent, undervoltage and overload maintenance.
Overcurrent maintenance function. In any link of motor acceleration, deceleration and constant speed operation, ...
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Inverter life extension method - Mitsubishi
First, the frequency converter should not be installed on the equipment with a sensation, because the main circuit connection screw in the frequency converter is simply loose, and many frequency converters are damaged due to this reason.
Second, the wiring problem: the input end of the inverter is connected to an air The initial maintenance current should not be too large, ...
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Query Error Code Method – Mitsubishi
Error Number (D8063): 6314
ERROR MESSAGE: PARALLELLINKERROR (PARALLEL OPERATION COMMUNICATION ABNORMAL)
Error content: Parallel operation string abnormal
Method: Whether the power supply of the two PLCs is on, and whether the connection wires between the main machine and the parallel operation module are correctly connected ...
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Mitsubishi garbage incinerator equipment with a daily processing capacity of 1,500 tons was delivered and put into operation
Mitsubishi Heavy Industries Environmental & Chemical Engineering Co., Ltd. (MHIEC, President: Takayuki Hishinuma, Headquarters: Nishi-ku, Yokohama), a subsidiary of the Mitsubishi Heavy Industries Group, has supplied two advanced Mitsubishi grate furnaces to a large-scale waste-fired power plant in Xiaogan City, Hubei Province, China. The waste-fired power generation ...
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Introduction to Mitsubishi Data Backup and Recovery
In the case of data backup and restoration, the method of batch backup function and the method of individual file input and output function can be used. The following devices can be used for batch backup/rehabilitation.
Memory card (front SD card), DS (display unit back SD card), USB memory ...
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Inverter overload fault factor - Mitsubishi inverter
1) The mechanical load is too heavy
The main characteristic of overload is the fever of the motor, and it can be detected by reading the operating current from the display. The main factor is that the load of Mitsubishi inverter is too large, and the acceleration and deceleration time and operation cycle time are too tight; V/F features voltage too ...
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Mitsubishi PLC hardware installation method
1. Use the special crimping pliers for network cable to crimp one end of the cable and the RJ45 crystal head; The other end is connected to the FX2N-485-BD communication template according to the method shown in Figure 1-Figure 3, and the two unused P5S terminals are not connected.
2. Open the panel cover on the left side of the PLC host, and put the FX2N-485-BD communication module ...
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Pay attention to the problem when choosing an inverter - Mitsubishi Electric
The current value of the motor is used as the basis for the selection of the inverter, and the rated power of the motor is only for reference.
Compared with the general squirrel cage motor, the winding motor simply has the problem of overcurrent tripping, and the slightly larger capacity than the usual ...
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Mitsubishi servo system selection
Mitsubishi servo system mainly has MR-J4, MR-JE, MR-JE-AS and other series, MR-J2S, MR-J3, MR-ES has been discontinued, gradually withdrawn from the shopping mall, the first three are considered.
When selecting a Mitsubishi servo, the first thing is to choose the MR-J4 series or MR-JE series according to the application, and the driver uses the A-type ...
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Built-in time adjustment in Mitsubishi PLC
How do I adjust the built-in moments in my Mitsubishi PLC? In the case of Mitsubishi PLC, sometimes technical engineers forget to adjust the PLC well, but they also need to pay attention to some key points and introduce how to adjust the built-in moments in Mitsubishi PLC.
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Mitsubishi inverter FR-E024-0.75K repair
Type: FR-E024-0.75K
Fault: The boot cannot be started
Maintenance: This machine does not provide any symptom information, and the display screen shows an "E.THT" error when the motor is to be started after powering on. Check the instructions refer to the ...
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Mitsubishi servo motor jog forward and reverse
Control requirements: press and hold the forward rotation button, the servo motor rotates forward, release the forward rotation button, and the servo motor aborts the work. Press and hold the rotary button, the servo motor rotates, release the rotary button, and the servo motor aborts the work. When turning forward, pressing the turn button has no effect. When turning, pressing the forward turn button is invalid ...
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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, sensors and drive equipment, which is the lowest layer of the entire network system. CC-Link fieldbus connection is selected, the number of wiring is greatly reduced, and the maintainability of the system is improved. Combine...
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Mitsubishi servo motor is now commonly used
1. Torque control: Torque control is based on external simulation simulation type or direct address assignment to set the output torque of the motor shaft. For example, 10V matches 5Nm. When the external simulation simulation is set to 5V, the output of the motor shaft is 2.5Nm. If the load on the motor shaft is less than 2.5Nm, ...
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Mitsubishi inverter setting parameter adjustment method
Mitsubishi inverter has many setting parameters, each parameter has a certain selection scale, and the inverter can not work normally due to improper setting of a single parameter in the application. Let's take a look at the Mitsubishi inverter parameter setting operation.
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Mitsubishi PLC's communication inspection method
When you are ready to communicate through AJ71QE71, perform a ping in MS-DOS format to check if the connection is correct before the Mitsubishi PLC's GPPW starts to communicate. The support communicates with the Weilun touch screen through the serial port.
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