Mining machinery applications
Background & Challenge
The coal mining production environment is harsh, and the control system must have high reliability to ensure long-term stable operation and avoid failures. This prevents production accidents and safety hazards caused by equipment malfunctions.
Solution
A certain coal mining machine uses Siemens S7-1500 series PLC. The pressure actions are mainly controlled by PLC logic, which drives the hydraulic system. Additionally, intermediate relays control the forward and reverse rotation of the motor, driving the conveyor chain. The PLC part uses Profinet communication. A single punching line uses five sets of ODOT I/O, with approximately 200 digital input and output points. It collects data from speed sensors on the conveyor belt to gather a series of operational data during the belt's operation. The PLC processes this data and sends commands to control the conveyor belt's speed, ensuring the operating data remains within a reasonable range.
Product Portfolio
| Product Model | Specifications |
| CN-8032-L | Profinet Network Adapter, Maximum input/output of 1440 Bytes, 2 × RJ45 ports |
| CT-121F | 16 channel digital input/24VDC/ Sink type/The input high level is valid |
| CT-222F | 16 channel digital output/24VDC/source type/output 24VDC, the output high level is valid |
| CT-4154 | 4 channels Voltage Output 0~5VDC/0~10VDC/±5VDC/±10VDC,16 Bits |
Result
The requirements for control systems in coal mining include high reliability, safety, flexibility, and ease of use. The application of ODOT Remote I/O greatly enhances equipment efficiency and stability, while the I/O interfaces provide redundancy to ensure system stability and scalability.
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2024-09-05