1762-IR4

Overview

Allen-Bradley 1762-IR4 is a 4-channel RTD/Resistance input module designed for MicroLogix controllers, supporting multiple RTD types and resistance measurement for precise temperature and resistance monitoring.

Power Requirements

• Maximum Bus Current: 40 mA @ 5 VDC, 50 mA @ 24 VDC

Input Specifications

• Channels: 4 input channels

• Supported Inputs: RTD (Platinum 385/3916, Copper 426, Nickel 672/618, Nickel-Iron 518)

• Resistance Range: 0…3000 Ω

• Filter Frequency: 10 Hz…1 kHz

• Temperature Units: °C or °F

• Data Formats: Raw/Proportional, Engineering Units, Engineering Units ×10, Scaled-for-PID, Percentage Range

Accuracy

• At 25 °C (77 °F) with Auto-Calibration:

• RTD: ±0.2…±0.6 °C (±0.36…±1.08 °F), depending on RTD type

• Resistance: ±0.5…±1.5 Ω, depending on resistance value

• At 0…55 °C (32…131 °F) with Auto-Calibration:

• RTD: ±0.4…±1.1 °C (±0.72…±1.98 °F), depending on RTD type

• Resistance: ±0.25…±2.5 Ω, depending on resistance value

Performance

• Channel Update Time: 6…303 ms per enabled channel, depending on filter selection

Diagnostics

• Channel Diagnostics: Reports over-range or open input conditions

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