Product Core Summary

• Model: HMR2300-D21-485
• Manufacturer: Honeywell
• Core Function: A digital I/O module for industrial automation, designed for integration with Honeywell DCS and PLC systems.
• System Compatibility: Compatible with Honeywell Experion DCS and other Honeywell control systems.
• Supply Status: In Stock
• Warranty Standard: 12-month functional warranty, fully tested

 

Key Technical Specifications

• Product Model: HMR2300-D21-485
• Manufacturer: Honeywell
• System Platform: Compatible with Honeywell Experion DCS, C300 Controller, and third-party PLCs
• I/O Type: 16 Digital Inputs/16 Digital Outputs
• Input Voltage Range: 24V DC (±20%)
• Output Voltage: 24V DC (source type)
• Current per Channel (Input): 6mA (nominal)
• Current per Channel (Output): 8mA (nominal)
• Signal Type: Sink/Source capability for digital I/O
• Protocol: RS-485, Modbus RTU communication
• Mounting Type: DIN Rail Mount
• Operating Temperature Range: -40°C to 70°C
• Storage Temperature Range: -40°C to 85°C
• Humidity Range: 5% to 95% non-condensing
• Response Time: 1ms (Digital Input), 5ms (Digital Output)
• Enclosure Rating: IP20
• Power Consumption: 4W (maximum)
• Isolation Voltage: 500V AC (input/output to system)
• Certifications: CE, UL, RoHS, ATEX (optional for hazardous areas)
• Compliance Standards: IEC 61010-1, UL508

 

Technical Architecture & Functional Positioning

The HMR2300-D21-485 is a versatile, high-density digital I/O module designed to integrate seamlessly into Honeywell automation systems, including the Experion DCS. Its primary role within the control system is to interface with field devices (such as sensors, actuators, and switches), converting field signals into data that can be processed by the controller and vice versa.

Architecture Analysis

• System Role: The HMR2300-D21-485 serves as a crucial input/output interface within the automation system. Positioned at the field level, it directly interacts with field devices, allowing for precise control and monitoring of industrial processes. In a distributed control system (DCS), it connects to the C300 Controller and acts as a direct point of communication between the controller and field devices.
• Core Technology: Utilizing RS-485 communication protocol, the module enables reliable data transmission over long distances, ensuring minimal data degradation. The module supports both sink and source configurations for digital I/O, making it highly adaptable to various field devices. The module’s DIN rail mount design simplifies installation and maintenance.
• Engineering Value: This module’s robust design ensures reliable operation even in harsh industrial environments, with a wide temperature range and high isolation voltage to protect the control system from electrical surges and noise. The IP20 rating and compact form factor make it easy to integrate into existing control cabinets without compromising system performance. The use of RS-485 ensures long-distance, reliable communication, which is critical in large-scale facilities or installations with significant signal routing requirements.

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