What needs to be clear is what electrical cabinets you have been working on in the past two years!! There are also various types of electrical cabinets. If you are making a distribution cabinet, such as GGD, GCD, GCK, MNS, etc., it will have almost no effect on your PLC and servo work. Simply put, if your cabinet is filled with switches, such as molded case circuit breakers, air switches, fuses, etc., even if you have been working on them for twenty years, they will not be useful because these are called power distribution, while PLC, servo, etc. belong to electrical automation.

What is truly useful to you is the electrical control cabinet, for example, various mechanical equipment, and electrical cabinets of various automated production lines. If you have been doing it for two years and have put in effort for two years, it still works! First of all, you are not completely rooted anymore!! Many super Asby always likes to ask how to learn PLC with zero foundation, which is not easy. Learn the foundation first, and become not with zero foundation.

If you have been working hard for two years, I believe you can figure out the following questions.

What are PLCs, servos, frequency converters, and what do they do?

The principle and fault diagnosis of the fundamental electrical control circuit.

How are the inputs and outputs of a PLC wired, and which components are the inputs and outputs connected to.

How are frequency converters, servos, etc. wired, and what are the effects of these wires.

Here is a parameter table for you. Can you set the parameters for variable frequency or servo.