How to Distinguish Between Imported and Domestic Mitsubishi PLC

Mitsubishi PLC, also known as Mitsubishi programmable logic controller, is the main product produced by Mitsubishi Electric in Dalian. It uses a kind of programmable memory for its internal storage program, executes user oriented instructions such as logic operation, sequence control, timing, counting and arithmetic operation, and controls various types of machinery or production processes through digital or analog input / output. Mitsubishi PLC has the following common models in the Chinese market: fr-fx1n fr-fx1s fr-fx2n fr-fx3u fr-fx2nc FR-A fr-q).

Features: Mitsubishi fxplc is a small, high-speed, high-performance and ultra small program device equivalent to the highest grade in FX Series in all aspects. In addition to the independent use of inputting 16 25 points, it can also be applied to the connection between multiple basic components, analog control, positioning control and other special purposes. It is a set of PLC that can meet a wide range of needs.

Mitsubishi PLC Nissan

Brand and model: Mitsubishi q02phcpu

Program capacity: 28 K steps.

Input and output points: 4096 points.

Number of input and output components: 8192 points.

Program memory capacity: 112 KB.

Support USB and RS232.

High performance CPU plus a set of rich and powerful process control instructions. High speed and high precision machine control through multiple CPUs. The high-speed control is realized through the parallel processing of the straight line of the sequence control program and the high-speed communication between multiple CPUs (the cycle is 0.88ms). The high-speed communication cycle between multiple CPUs is synchronized with the motion control, so the operation efficiency can be greatly improved. In addition, the performance of the new motion control CPU is twice that of the previous model, ensuring high-speed and high-precision machine control. Take the position signal of the first axis servo amplifier used on the motion CPU as a trigger to execute axis start from the programmable controller CPU to the second axis servo amplifier until the servo amplifier outputs the speed command. This time is an indicator of data transmission speed between CPUs.

How to distinguish between imported and domestic Mitsubishi PLC

Quality difference

The technology is the same. A domestically produced FX2N PLC (made in China) is produced in Shanghai and Mitsubishi's China assembly plant. There is an outrageous problem with this thing. When the internal switching power supply is turned on, the protection is turned on. Observe carefully. At the moment of power on, a chip capacitor actually ignites, a multimeter measures, and the capacitor breaks down. It is the first time to see the breakdown of low-voltage chip capacitor (24V filter capacitor supplying power to the relay), which is a quality problem of components. There are many failures caused by electrolytic capacitor in domestic production, but the chip capacitor can also improve the quality. So the difference is the component quality.

How to distinguish between imported and domestic Mitsubishi PLC

1 Look at the product packaging:

Fuselage packaging is mainly seen from the aspects of outer packaging box, label, inner packaging film and product manual

1. Outer packing box

The outer packing box of the original machine is generally imported paper, with strong texture; The handwriting printed on it is clear, and the color difference between batches is very small.

The outer packing box of the fake machine is mostly domestic paper, with loose texture and soft feel; The handwriting printed on the box is vague, not clear enough, the color is relatively dark, and the color difference between batches is large due to printing technology.

2. Outer package label

The paper of the original machine outer packaging label is milky white, while the paper of the fake machine outer packaging label is pure white. This can only be distinguished by careful debate in a well lit environment.

3. Inner packaging film

The inner packaging moisture-proof film of the original machine is mostly imported film, with high transparency and high flexibility.

The inner packaging moisture-proof film of the fake machine is domestic rubber film, which is less transparent and flexible than the former, even yellow and brittle.

4. Product specification

The original machine product manual paper is imported paper, with good willfulness, light yellow color, and clear and natural handwriting.

The product manual of the fake machine is ordinary domestic paper. The paper is brittle, the color is white, and the printed handwriting is heavy and black.

2 See the circuit board and related accessories inside the fuselage:

Fold off the fuselage shell and check the inside of the fuselage, focusing on the machine jack, circuit board connector and the adhesive used for the connector

1. Machine jack

Check the internal jack of the programming port. The original Mitsubishi internal metal sheet is gold-plated, and most of the non original ones are silver or titanium white.

2. Circuit board interface

The circuit board processing technology of the original machine is fine, and the joints are smooth and neat, without being too long or too short; The joint processing of fake machines is rough, and the thread ends are often too long or too short.

3. Viscose for joints

The original machine mostly adopts pure imported adhesive, with transparent color and high gloss.

The adhesive used in the fake machine is made in China, the color is often turbid, and the gloss of the glue body is dim or even dull.

4. The inkjet on the side of the product, the inkjet on the side of the genuine product is clear and neat, and the false ones are relatively uneven and have poor clarity.

5. The internal data of the genuine product is maintained at about 1F capacitance, and the fake may directly use the battery.

6. There are clear Mitsubishi signs on the internal circuit board of the genuine product, while the false signs are completely different, and the overall vision is astringent and unnatural.

7. The most important thing is that the CPU of the genuine product is large and thick, with product type number on it, and the fake CPU is relatively small and thin.

When the normal original Mitsubishi frequency converter machine leaves the factory, each machine has a body code, just like the ID card of each citizen, which is unique. This fuselage code can be reported to the manufacturer for inspection through their respective manufacturer's service phone. It is believed that the true and false results will be finalized soon. This is a practical and simple identification method. This fuselage code is generally pasted on the fuselage or outer packing box of the equipment.