Wiring Diagrams for Inverters, Servo Motors, and PLCs You Will Definitely Need 1. PLC Control Motor Start and Stop Circuit2. Wiring Relationships of PLC Inputs and Outputs3. Working Principle of Inverters4. Switching Circuit Between Inverter Frequency and Power Frequency5. Control Circuit for Switching Between Inverter and Power Frequency Modes6. How to Connect PLC with Inverter7. … Read more
Example 1: It was functioning normally the day before, but suddenly both manual and remote controls stopped working the next day. Analysis and Repair: Based on the fault phenomenon analysis, a power circuit anomaly was suspected. To facilitate repairs, a circuit diagram was drawn based on the physical device, as shown in the attached figure. … Read more
Click↑↑Technical Training, follow and pin it to subscribe for free long-term Over 180,000 industrial control professionals follow this WeChat platform: technical sharing, learning exchange, industrial control videos The PLC, a replacement for contactor distribution cabinets and relay control cabinets, has become widely popular in the development of automated production. To help everyone better understand PLC … Read more
Control Requirements Three switches are used to operate the PLC to control the frequency converter driving the electric motor for delayed forward and reverse operation. One switch is used for forward control, one switch is used for stop control, and one switch is used for reverse control. When the forward switch is closed, the motor … Read more
Search on WeChatElectrical Engineering Learning 1. Thyristor Speed Control Circuit 2. Electromagnetic Speed Control Motor Control Diagram 3. Three-Phase Four-Wire Energy Meter Transformer Wiring 4. Energy Consumption Braking 5. Sequential Start, Reverse Stop 6. Boiler Water Level Detection Device 7. Motor Forward and Reverse Control Circuit 8. Electric Hoist Crane Circuit 9. Single-Phase Leakage Switch … Read more
The PLC control circuit for the cement mixer is shown in the figure. This article only presents the control circuit diagram and ladder diagram of the PLC. The main circuit controls the operation of the water pump, material pump, and mixing pump with overload protection through a variable frequency drive. The water pump is a … Read more
01 Start, Self-locking, and Stop Control PLC Circuit and Ladder Diagram Start, self-locking, and stop control are the most basic control functions of PLC. These can be implemented using output instructions (OUT) or set/reset instructions (SET, RST). 1. Using Coil Drive Instructions for Start, Self-locking, and Stop Control The coil drive (OUT) instruction functions to … Read more
The programming language for PLC software has distinct characteristics compared to general computer languages. It is neither a high-level language nor a typical assembly language, and it must meet the requirements for ease of writing and debugging. Early PLCs supported only ladder diagram programming language and instruction list programming language. According to the International Electrotechnical … Read more
1. Start-Stop Control Circuit Control requirements: Press the start button (I0.0 is ON), Q0.0 is ON; Press the stop button (I0.1 is OFF), Q0.0 is OFF. The ladder diagram is shown in Figure 1. Figure 1 Start Priority 2. Interlock Control Circuit In the interlock circuit shown in Figure 2, I0.0 and I0.1 are the … Read more