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Lc control cabinet wiring specification control wiring and communication wiring

Release time:

2023-11-07

The plc control cabinet wiring specification must be observed when the control cabinet is designed into production. Before that, we explained three types of control cabinet wiring: power wiring, control wiring and communication wiring. Because power wiring is rarely contacted in the production process of PLC control cabinet, today we will explain the specifications of control wiring and communication wiring in the wiring specification of PLC control cabinet, as well as some matters needing attention in the wiring process. To ensure the safety and stability of the production control cabinet.

Specification for 1. Control Wiring

Control wiring is usually control loop wiring, which needs to be connected in accordance with the drawings of plc control cabinet wiring specification design. The connection process of control wiring involves bolt connection, plug connection, welding and other wiring methods. The control wiring shall be firm and reliable, the wiring harness shall be horizontal and vertical, and the routing mode of the same components in the same contract shall be consistent. This will appear hierarchical, neat and beautiful.

Precautions for 2. Control Wiring

1, the wiring is best away from the arcing components, and it is best not to affect the electrical operation.

2. It is better not to have connectors in the middle of all connecting wires, and it is better not to connect two wires to each terminal connection point.

3. The control wiring should not overlap and stagger with the power line.

Specification for 1. Communication Wiring

Communication wiring in the work is mainly divided into the production of DP plug and some PLC and touch screen and other communication equipment wiring, if not according to the requirements of wiring, may lead to communication interruption, communication instability or unable to communicate.

Precautions for 2. communication wiring

1, the wiring is firm, if the wiring is not firm, there may be virtual connection, which will lead to communication interruption and instability.

2. Correct wiring. For example, the connection between Siemens plc and Kunlun on-state touch screen is 38 corresponding to 78. If the wiring is not carried out as required, communication will be impossible.

3. Pay attention to the handling of shielding and grounding. Personally, I think the handling of the shielding layer is very important. For example, when making DP plugs, the braided shielding tape must be accurately placed on the metal guide device, so as to ensure the stability of communication.

Wiring work is an important link in the production of all plc control cabinets, and the connection of lines plays a key role in "pulling one hair and moving the whole body. Any error in the wiring will affect the operation of the whole set of control equipment and control system. Therefore, whether it is the design of wiring drawings or the production of wiring on site, it must be carried out in accordance with the wiring specification of plc control cabinet and related precautions.

What is the structure of the PLC control cabinet?

Basic principles of PLC control design