1734-EN2TR

Overview of Allen Bradley 1734-IR2

The Allen Bradley 1734-IR2 is a 2-channel RTD input module designed for the POINT I/O system. This non-isolated, single-ended module provides precise temperature measurement with 16-bit resolution across two independent input channels. The 1734-IR2 delivers high-accuracy readings with a resolution of 9.5 mΩ per count and 0.03 °C per count when used with Pt385 sensors at 25 °C. The module draws 220 mA at 5V DC from the POINTBus and dissipates a maximum of 1.0 W during operation. Its compact open-style design measures 56 x 12 x 75.5 mm and weighs approximately 0.036 kg, making it ideal for space-constrained installations. The module features green and red LED indicators for module status, network status, and individual input channel monitoring. It operates reliably across a temperature range of 0 to 60 °C and mounts on compatible 1734-TB, 1734-TBS, 1734-TOP, or 1734-TOPS wiring base assemblies with terminal base screw torque specifications of 0.8 Nm.

Key Features of Allen Bradley 1734-IR2

• Dual RTD input channels with 16-bit resolution for accurate temperature sensing
• Compatible with Pt100, Pt200, Pt500, Pt1000, and Ni120 RTD sensors
• Keyswitch position 6 for flexible configuration options
• Basic insulation with 50V continuous isolation voltage between I/O and system
• Multiple wiring base compatibility for diverse installation requirements
• Status indicators for quick diagnostics and troubleshooting
• Low power consumption with 220 mA current draw at 5V DC

Technical Specs of 1734-IR2

• Number of Inputs: 2 single-ended, non-isolated
• Resolution: 16 bits (9.5 mΩ/count, 0.03 °C/count for Pt385 at 25 °C)
• POINTBus Current: 220 mA @ 5V DC maximum
• Power Dissipation: 1.0 W maximum
• Thermal Dissipation: 3.3 BTU/hr maximum
• Isolation Voltage: 50V continuous, basic insulation type
• Operating Temperature: 0 to 60 °C (32 to 140 °F)
• Dimensions: 56 x 12 x 75.5 mm (H x W x D)
• Weight: 0.036 kg
• Wire Size: 0.25 to 2.5 mm² (22 to 14 AWG)
• Enclosure Type: None (open-style)
• Terminal Base Torque: 0.8 Nm (7 lb-in)

Applications / Use Case

The Allen Bradley 1734-IR2 module serves critical temperature monitoring applications across manufacturing, process control, and industrial automation environments. It provides reliable RTD input capability for applications requiring precise thermal management, including heat treatment processes, HVAC control systems, and food processing equipment. The module integrates into distributed I/O architectures using the POINT I/O platform, supporting both DeviceNet and EtherNet/IP communication protocols for flexible network integration. Manufacturing facilities use the 1734-IR2 for equipment monitoring, preventive maintenance, and quality control where temperature accuracy directly impacts product specifications. The dual-channel design allows monitoring of multiple measurement points within a compact footprint, reducing installation costs and panel space requirements. Process industries leverage this module for reactor temperature control, distillation column monitoring, and batch process management. The module's basic insulation rating and wiring category 1 classification make it appropriate for standard industrial environments where high-voltage isolation is not required. Its compatibility with multiple wiring bases provides installation flexibility across new projects and retrofit applications.

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