Technical Specifications DC digital input type; Channel to backplane isolation; Operating temperature 0~60°C; Supports dry contact and wet contact input; Overvoltage protection on input terminals.
Functional Features Read discrete on/off signals from field equipment. Detect channel open circuit and short circuit faults. Hot swap support for online replacement. Real-time status upload to DCS controller.
Application Scenarios Used for valve position feedback, motor running status, limit switch and alarm contact signal collection in process industries such as power plant and chemical plant.
Performance Parameters Input response time less than 10ms; Channel isolation voltage up to 1500V; Status update cycle configurable.
Structural Characteristics Standard rack plug-in module, with terminal block for field wiring. LED indicators for each channel on/off status and module health.
Working Principle Field contact signals are sent to input channels. The module detects high/low level status, converts to digital data, and communicates to DCS controller through backplane bus. Fault information is generated when abnormal signal detected.
Installation Requirements Install in DCS rack slot and lock. Separate field signal wiring from high voltage power lines. Ensure reliable grounding of cabinet.
Usage Notes Power off before wiring modification. Do not hot swap without system permission. Check channel LEDs for signal status. Configure input type in DCS software.
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