ABB DI801 16-channel 24 V digital input module

ABB DI801 16-channel 24 V digital input module​

5. 1. Product Description​
   The ABB DI801 is a high-reliability 16-channel digital input module designed for industrial automation systems. It is specifically engineered to receive 24 V DC digital signals from field devices such as proximity sensors, limit switches, and pushbuttons, then convert these signals into digital data recognizable by the controller (e.g., ABB AC 800M DCS). This module features strong anti-interference capability and stable signal transmission, providing a solid foundation for real-time monitoring and control of industrial on-site status.​
   2. Detailed Parameters​
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   Parameter Category​	Specifications​
   Input Channels​	16 channels (isolated in groups of 4 channels)​
   Input Signal Type​	24 V DC digital input (sinking/sourcing configurable)​
   Input Voltage Range​	19.2 - 28.8 V DC (rated voltage: 24 V DC)​
   Input Current​	Typical: 7 mA (at 24 V DC); Maximum: 10 mA​
   Isolation​	Group-to-group: 500 V DC; Channels-to-backplane: 1500 V DC​
   Response Time​	≤ 1 ms (for signal transition from low to high/high to low)​
   Operating Temperature​	-40°C to +70°C​
   Dimensions (W×H×D)​	48.3 × 100 × 150 mm​
   Mounting Method​	DIN rail mounting (compatible with standard 35 mm DIN rails)​

    

    

    

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   3. Advantages & Features​
   1. High Channel Density: 16 input channels in a compact size, saving cabinet installation space.​
   2. Flexible Signal Compatibility: Supports both sinking and sourcing input modes, adapting to different field device signal types.​
   3. Group Isolation Design: 4-channel group isolation reduces cross-interference between signals, improving data collection accuracy.​
   4. Fast Response: ≤1 ms response time ensures real-time capture of field device status changes, suitable for high-speed monitoring scenarios.​
   5. Robust Environmental Adaptability: Wide operating temperature range (-40°C to +70°C) and strong anti-electromagnetic interference capability, stable in harsh industrial sites.​
   4. Application Fields​
   • Automotive Manufacturing: Monitoring the status of assembly line limit switches, robotic position sensors, and conveyor belt emergency stops.​
   • Food & Beverage Processing: Detecting the on/off status of filling machine valves, conveyor photoelectric sensors, and temperature control switches.​
   • Logistics & Warehousing: Tracking the position of stacker crane limit switches, warehouse door sensors, and conveyor belt operation signals.​
   • Pharmaceutical Industry: Monitoring the opening/closing status of sterile room doors, equipment start-stop buttons, and filter replacement alerts.​
   5. Precautions​
   1. Confirm that the input signal voltage is within the range of 19.2-28.8 V DC to avoid module burnout due to overvoltage.​
   2. Check the isolation resistance between channel groups before installation; do not power on if the resistance is abnormal (e.g., short circuit).​
   3. When wiring, distinguish between sinking and sourcing modes clearly to prevent signal distortion caused by wrong wiring.​
   4. Avoid installing the module near heat sources (e.g., power resistors) or areas with severe vibration to prevent performance degradation.​
   5. Regularly inspect the wiring terminals for looseness; tighten them in time to ensure stable signal transmission.
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