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; The voltage of the V/F feature is too high; The power of the inverter is too small.
2) The three-phase voltage is unbalanced
The operating current that causes a certain phase to be too large and causes an overload to trip is characterized by an unbalanced motor fever, which may not be detected when reading the operating current from the display (because the display only shows one phase current).
3) Malfunction
There was a problem with the current detection part inside the Mitsubishi inverter, and the detected current signal was too large, causing it to trip.
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Malfunction caused by capacitance between PLC input lines – Mitsubishi
There is a capacitance between the wires of the cable, and a qualified cable can limit this capacitance to a certain size. It is a qualified cable, when the cable length exceeds a certain length, the capacitance value between the lines will also exceed the required value, when the cable is used for PLC input, the capacitance between the lines will be ...
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Mitsubishi servo drive system requirements
Servo drive system requirements
1. Wide speed regulation
2. High positioning accuracy
3. Satisfactory transmission rigidity and high speed stability
4. Fast response, no overshoot
In order to ensure productivity and processing quality, in addition to the requirement of high positioning accuracy ...
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Mitsubishi PLC command negation, empty operation and END, etc
Introduction to Mitsubishi PLC directives such as negation, air operation and END
The INV (Inverse) command is represented by a short 45° slash at the top of the ladder diagram, which negates the result of the operation before the execution of the instruction, and the result of the operation is 0 ...
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Troubleshooting methods for Mitsubishi overload
1. Check whether the motor is heated
If the temperature rise of the motor is not high, the first thing to check is whether the electronic thermal protection function of the Mitsubishi inverter is preset reasonably, if the Mitsubishi inverter still has margin, the preset value should be relaxed; For example, the allowable current of Mitsubishi inverter is now out of margin, not ...
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Mitsubishi 5uplc monitors modbusTCP disconnect methods
First, Mitsubishi uses FX5U series PLC with serial port and built-in modbus communication protocol, so that we can easily communicate with third-party equipment. If it is a communication between Mitsubishi PLC and the inverter, the focus is on designing the parameters. The inverter is heavy, set the address, baud rate, check, etc., ...
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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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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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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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Mitsubishi PLC Comparison Instruction Application
1. Compare the instruction CMP
1)。 16-bit arithmetic (CMP, CMPP) compares the contents of the comparison value S1 with the comparison source S2, and according to the results (small, - zhi, large), D, D+1, D+2 - one is ON.
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Replacement steps for the internal battery of Mitsubishi PLC
When the battery voltage drops, the power supply is "ON", and the "BATT. V" LED lights up, and the battery is valid for one month from the time the light is on. However, there are times when it is found late, so after finding that the indicator light is on, the battery should be replaced as soon as possible to avoid power failure.
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Maintenance method of Mitsubishi inverter
Electrical characteristics view
Mitsubishi inverters that have been running and placed for a long time, due to the influence of the environment and the aging of inverter equipment, it is necessary to check and maintain the electrical performance of Mitsubishi inverters regularly. A comprehensive review of the input, rectifier and inverter, DC input fuses found ...
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Mitsubishi PLC program lost backup program write method
The reasons for the loss of the PLC program are the lack of battery power supply for the user's saved program, the internal circuit of the PC, the motherboard burned out due to the impact of external high voltage such as lightning strikes, etc., which will be encountered in our PLC control system. For example, the old type of plc such as the FX2N series, which has been discontinued...
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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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Special function module of the Mitsubishi PLC FX series
The communication module of PLC is used to complete the communication with other PLCs, other intelligent control equipment or computers. The following is a brief introduction to the FX series communication function shields, adapters and communication modules.
(1) Communication expansion ...
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Anti-interference measures for PLCs and touch screens - Mitsubishi PLC
1. Select the power supply with excellent performance and press the disturbance introduced by the power grid
The power supply of the PLC controller is powered by a non-power line, and is powered by a special line directly led by the main bus of the low-voltage distribution room. Isolation transformer should be selected, the transformer capacity should be 1.2-1.5 times larger than the actual need, and can be used in isolation...
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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 Electric MPD series IGBT modules
Mitsubishi Electric's newly developed new MPD series IGBT modules will be unveiled at PCIM Asia 2012 (BoothNo). :301) June 19-21 at the Shanghai World Expo Complex. The new MPD series is very suitable for water-cooled design, and is a high-current power supply with good heat dissipation performance and strong reliability.
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Mitsubishi PLC Explanation Notes on the Final Statement
If the language is a programming language without any explanation, it will be very difficult for the engineer to understand the program again, and some clarification can bring twice the result to the work. There are three types of explanations: notes, statements, and notes. Note: Explain a certain ...
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Programmable Controller System Design and Debugging Steps – Mitsubishi PLC
The main steps in the planning and commissioning of the programmable manipulator application system
(1) In-depth understanding and analysis of the process conditions and control requirements of the controlled target
a. The controlled target is a controlled mechanical, electrical equipment, production line or ...
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Mitsubishi PLC remote fault diagnosis connection
Mitsubishi PLC is widely used in digital control systems. At present, equipment long-distance control plays an important role in long-distance data collection, PLC long-distance fault diagnosis, and PLC long-distance programming. This article takes the long-distance control of Mitsubishi PLC as an example, and after the HiNet intelligent gateway of Huachen Zhitong ...
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