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In industrial automation, control systems act as the "brain," and optocoupler devices are the "neurons" that ensure stable operation. Kinghigh's optocoupler products are used in core applications such as PLC control, motor drives, and sensor isolation, making them an essential component in the transition to industrial intelligence.
Industrial environments typically present three main challenges: high-voltage pulse transients, electromagnetic interference (EMI), and ground potential differences. Conventional circuit designs are susceptible to system malfunctions caused by voltage disturbances. Kinghigh optocouplers address this by using photoelectric isolation to create an insulation barrier between the input and output.
Meeting Industrial Application Needs
KL3H7 Series for PLC Control
This series features a compact SSOP4 package and a wide current transfer ratio (CTR) range of 50% to 600%, making it suitable for various PLC input modules. In an automotive production line upgrade project, this model was used to isolate 220V control signals from 24V logic circuits, resulting in a 67% reduction in failure rates.
KL1019 Series for Sensor Signal Isolation
Designed for 4-20mA current loops in industrial settings, this series offers 0.1% linearity for accurate sensor data reproduction. In a petrochemical pipeline monitoring system, it effectively isolated interference in environments ranging from -40°C to 85°C, maintaining a data acquisition accuracy of 99.9%.
KL2200 Series for High-Speed Communication
Supporting signal transmission up to 5Mbps, this series includes a built-in Schmitt trigger and provides noise immunity up to 1kV/μs. In photovoltaic (PV) inverter applications, its 5000Vrms isolation voltage ensures distortion-free DC-AC conversion signals, helping to increase conversion efficiency to 98.5%.
Role in Modern Industrial Automation
In the era of Industry 4.0, optocouplers facilitate the high-speed signal conversions that form the nervous system of smart factories. From discrete manufacturing to process industries, and from upgrading traditional production lines to building "lights-out" factories, these components provide stability for industrial control systems and support the advancement of modern manufacturing.
