Introduction to GE IS420USBH1A
IS420USBH1A Product Introduction
The GE IS420USBH1A is a high-reliability USB communication module designed for GE’s Mark VIe distributed control system (DCS), specifically engineered to facilitate seamless data exchange between the DCS controller and host computers. As a critical communication interface component, it enables fast and stable transmission of control system data, configuration parameters, and diagnostic information via the USB port, simplifying system setup, monitoring, and maintenance processes. This module features robust anti-interference capabilities, which ensure reliable data communication even in harsh industrial environments with strong electromagnetic interference. Its compact and standardized design allows for easy integration into GE’s Mark VIe system chassis, ensuring compatibility and consistency with other system components. It is widely applied in power generation, petroleum refining, and other critical process industries where efficient and reliable communication between control systems and host devices is essential.

IS420USBH1A Technical Parameters
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Product Model: IS420USBH1A
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Product Type: USB Communication Module (GE Mark VIe DCS Series)
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Core Functions: USB-based data communication; Transmission of control system data and configuration parameters; System diagnostic information exchange; Anti-electromagnetic interference
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Connection Specifications: Compatible with GE Mark VIe DCS systems; USB interface (compliant with USB 2.0 standard); Standard rack-mounted installation; Industrial-grade terminal connections
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Electrical Specifications: Power Supply: Compatible with GE Mark VIe system power (24VDC typical); Power Consumption: Low power design; Certifications: Compliant with industrial safety and EMC standards
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Environmental Ratings: Operating Temperature: -40°C to +70°C; Storage Temperature: -40°C to +85°C; Relative Humidity: 5% – 95% (non-condensing); Electromagnetic Compatibility: Meets industrial EMC requirements
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Mechanical Details: Housing Material: Industrial-grade high-strength metal; Dimensions: Standard GE Mark VIe module size; Protection Rating: IP20
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System Compatibility: Fully compatible with GE Mark VIe distributed control system; Suitable for power generation, petroleum refining, and other process control industries
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IS420MDCH1A: Module diagnostic and control module for GE Mark VIe systems










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