4E0021.01-90 B&R

describe

Brand : B&R
Model number :4E0021.01-90
Origin :USA
Warranty: One year
Contact information :+ 86-17735379951
Email :340565517@qq.com

Learning PLC programming is not difficult at all. Some beginners have put in a lot of effort in theory, but after half a year, they still haven’t understood PLC. In fact, they just lack some practical experience in PLC. As long as they carry out some practical operations such as ladder diagram writing, program download, debugging, and increase their perceptual understanding of PLC, they can quickly master PLC technology. At the beginning, you can first learn a brand of PLC, because all PLC principles are similar. Once you have mastered one PLC, you can easily start using other ones by flipping through the manual.

When you start learning, you can create some simple ladder diagrams, such as the AND, OR, and output of contacts, and run them in the PLC machine. Success will increase your interest and confidence in learning. Then apply the main functions of the PLC one by one, such as the high-speed counter. You can connect the pulse output end of the PLC itself to the input end of the high-speed counter, download the programmed ladder diagram, open the variable observation window, run the program, and observe whether the count value is correct. After such practice, you basically know what PLC can do, and in practical industrial control applications, you can be confident.

It is essential to understand the principles of electricians and motors, and even memorize simple ones, such as motor capacity of 1KW2A, forward and reverse rotation, star delta wiring, and wire capacity. Characteristics of resistors, inductors, capacitors, etc

Hydraulic and pneumatic systems also need to be mastered, such as pressure conversion, pressure to current ratio conversion, which are used in pressure control

You need to be able to see the cross-sectional area of the wires. You can easily tell how many square meters the wires are and what wires should be used for any electrical appliances, such as a 4-wire motor with 3 main wires and 1 grounding wire. The ones coming out of the frequency converter need to use shielded wires.

Machine maintenance also requires proficiency, especially in screws, where you can easily determine how many internal or external hexagonal wrenches to use (don’t underestimate it, it is essential to maintain and fix screws in regular maintenance, as this can save time)