Allen Bradley 1769-IR6 /A Compact I/O 6 Channel RTD Resistance Input

Allen-Bradley 1769-IR6 Compact I/O 6-Channel RTD/Resistance Input Module

The Allen-Bradley 1769-IR6 is a Compact I/O module designed to interface with Resistance Temperature Detectors (RTDs) and direct resistance input devices. It offers six individually configurable input channels, making it suitable for applications requiring precise temperature and resistance measurements.

Key Features

• Six Configurable Input Channels: Each channel can be set up for 2-wire or 3-wire RTD inputs, as well as direct resistance measurements. While compatible with 4-wire RTDs, the module utilizes only three wires, with the fourth wire left unconnected.
• Supported RTD Types: The module accommodates various RTD types, including:
  • Platinum 385 (100, 200, 500, 1000 Ω)
  • Platinum 3916 (100, 200, 500, 1000 Ω)
  • Nickel 672 (120 Ω)
  • Nickel 618 (120 Ω)
  • Nickel-Iron 518 (120 Ω)
• Input Signal Ranges: The module supports resistance input ranges of 0–150 Ω, 0–500 Ω, 0–1000 Ω, and 0–3000 Ω, providing flexibility for various measurement needs.
• Excitation Current Options: To minimize RTD self-heating, the module offers programmable excitation currents of 0.5 mA and 1.0 mA.
• High Accuracy and Resolution: The module delivers precise measurements with a resolution of 16 bits and an accuracy of ±0.25°C, depending on the RTD type and operating conditions.
• Comprehensive Diagnostics: Each channel features open-circuit, short-circuit, and over/under-range detection, enhancing system reliability and facilitating troubleshooting.
• Configurable Digital Filtering: Users can select from filter frequencies of 10 Hz, 50 Hz, 60 Hz, 250 Hz, 500 Hz, and 1 kHz to optimize performance based on application requirements.

Technical Specifications

• Power Requirements:
  • 5 V DC: 100 mA
  • 24 V DC: 45 mA
• Isolation Voltage: 720 V DC for 1 minute (channel to bus), with a working voltage of 30 V AC/30 V DC.
• Input Impedance: Greater than 10 MΩ, ensuring minimal loading on input signals.
• Common Mode Voltage Range: ±10 V DC, accommodating various signal conditions.
• Physical Dimensions:
  • Height: 118 mm (4.65 inches)
  • Depth: 87 mm (3.43 inches)
• Operating Temperature Range: 0°C to +60°C (+32°F to +140°F), suitable for industrial environments.

Compatibility and Installation

The 1769-IR6 module is compatible with Allen-Bradley CompactLogix and MicroLogix 1500 controllers. It can be mounted on a DIN rail or directly on a panel, offering flexibility in installation. The module supports integration into distributed I/O systems using communication adapters such as the 1769-ADN DeviceNet and 1769-AENTR Ethernet adapters.

Applications

This module is ideal for applications requiring accurate temperature monitoring and resistance measurements, including process control, manufacturing, and other industrial automation systems. Its high accuracy, diagnostic capabilities, and flexible configuration options make it a valuable component in ensuring precise and reliable data acquisition.