I/O modules

Overview

The Allen-Bradley 1762-IF2OF2 is a compact analog input/output module designed for the MicroLogix PLC series. It combines two differential analog inputs and two single-ended analog outputs, supporting both voltage and current signals. Its rugged design, broad temperature tolerance, and reliable noise immunity make it suitable for demanding automation environments.

General Specifications

Analog Input Specifications

• Inputs: 2 differential channels (unipolar)
• Resolution: 12-bit for precise signal capture
• Voltage Range: 0–10 V DC
• Current Range: 4–20 mA
• Impedance: 200 kΩ at voltage terminal
• Common Mode Rejection: >55 dB at 50/60 Hz
• Update Time: 2.5 ms typical
• Input Protection: -30 V for voltage, -32 mA for current

Analog Output Specifications

• Outputs: 2 single-ended channels (unipolar)
• Output Ranges: 0–10 V DC, 4–20 mA
• Load Ranges: >1 kΩ for voltage, 0–500 Ω for current
• Update Time: 4.5 ms typical
• Accuracy: ±0.5% at 25°C, ±1.17% across full range
• Protection: Short-circuit, overcurrent, reactive loads <1 µF or <0.1 mH

Electrical Noise Immunity

• Fast Transient Burst: 2 kV @ 5 kHz (IEC 1000-4-4)
• Conducted Immunity: 10 V @ 0.15–80 MHz (IEC 1000-4-6)
• Radiated Immunity: 10 V/m, 80–1000 MHz (IEC 1000-4-3)
• Surge Immunity: 1 kV galvanic gun (IEC 1000-4-5)
• Static Discharge Protection: EN 61000-4-2

Environmental and Mechanical Ratings

• Altitude: Up to 2000 m
• Shock Resistance: 30 g
• Vibration Resistance: 5 g @ 10–500 Hz
• Compliance: UL 1604 Class I, Div. 2; EN 50081-2 Class A

Applications

The Allen-Bradley 1762-IF2OF2 module supports precise analog signal processing in:

• Process automation and monitoring
• Machine control systems
• Temperature and pressure regulation

Details