HONEYWELL TK-IDD321 Product Specification
1. Product Overview
The HONEYWELL TK-IDD321 is a high-density digital input module engineered for Honeywell TPS (Total Plant Solution) and Experion PKS control systems. As a critical data acquisition component in industrial automation, it specializes in collecting discrete digital signals from field devices—such as limit switches, proximity sensors, and pushbuttons—converting them into processable data for the control system. Widely applied in oil & gas, petrochemical, and manufacturing industries, this module ensures real-time status monitoring of equipment, laying the foundation for reliable process control and fault diagnosis.
Equipped with optically isolated channels and surge protection technology, the TK-IDD321 delivers strong anti-interference performance and stable signal acquisition under harsh industrial conditions (electromagnetic interference, voltage spikes). It complies with IEC 61131-2 and UL 508 standards, ensuring seamless integration with Honeywell’s control systems and meeting the safety requirements of industrial sites.
2. Technical Parameters & Specifications
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Category
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Details
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Product Type
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32-Channel Digital Input Module (Dry Contact/Wet Contact)
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Compatible Systems
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HONEYWELL TPS, Experion PKS Control Systems
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Input Channels
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32 Isolated Channels (8 groups of 4 channels)
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Input Signal Type
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Dry Contact (NC/NO); Wet Contact: 24 V DC (Sink/Source)
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Input Voltage Range
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18 V DC – 30 V DC; Threshold Voltage: ON ≤10 V DC, OFF ≥18 V DC
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Response Time
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≤1 ms (Typical); Adjustable: 1 ms – 100 ms
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Isolation
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Channel-to-Channel: 500 V DC; Channel-to-System: 1500 V DC
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Power Supply
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From System Backplane: 5 V DC ±5%; External: 24 V DC ±10%; Power Consumption: ≤15 W
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Environmental Ratings
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Operating Temp: 0°C–60°C; Humidity: 5%–95% (Non-Condensing); Vibration: ≤2 g
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Mechanical Dimensions
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175 mm × 105 mm × 30 mm (L×W×H); Backplane-Mounted
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Certifications
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IEC 61131-2; UL 508; CSA C22.2 No. 14; CE; RoHS
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3. Key Features
3.1 High-Density & Versatile Input
32 isolated channels in a compact form factor maximize control cabinet space utilization. The module supports both dry and wet contact signals, adapting to diverse field device types—from passive limit switches to active proximity sensors. This versatility makes it suitable for mixed-signal monitoring scenarios like assembly line equipment status tracking.
3.2 Fast Response & Signal Integrity
With a typical response time of ≤1 ms, the module captures rapid signal changes in real time—critical for high-speed processes like packaging machinery control. Optically isolated channels and surge protection (IEC 61000-4-5) effectively suppress electromagnetic interference and voltage spikes, ensuring accurate signal acquisition in noisy industrial environments.
3.3 Flexible Configuration & Diagnostics
The response time is adjustable between 1 ms and 100 ms via system software, adapting to different signal stability requirements. Built-in diagnostics monitor channel faults, power anomalies, and open circuits, transmitting real-time alerts to the control system to facilitate quick troubleshooting and reduce maintenance time.
4. Related HONEYWELL Products
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HONEYWELL TK-IDD161: 16-channel digital input module, ideal for small-scale process monitoring systems.
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HONEYWELL TK-ODO161: 16-channel digital output module, paired with TK-IDD321 for complete input-output control loops.
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HONEYWELL TK-IAM081: 8-channel analog input module, collecting continuous signals for mixed-signal control systems.
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HONEYWELL TK-OAV081: 8-channel analog output module, regulating valves and actuators based on TK-IDD321’s input data.
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HONEYWELL C300 Controller: High-performance process controller, fully integrated with TK-IDD321 for large-scale industrial systems.
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