A-B 1769-IF8 Analog Input Module

Allen-Bradley 1769-IF8 Analog Input Module (CompactLogix)

 

 

The Allen-Bradley 1769-IF8 is an 8-channel analog input module for the CompactLogix / MicroLogix 1500 system. It is used to receive continuous process signals such as 4–20 mA current signals or 0–10 V voltage signals from field instruments and convert them into digital values for PLC processing.

Key Specifications

• Model: 1769-IF8
• Brand: Allen-Bradley (Rockwell Automation)
• Series: Compact I/O 1769
• Product Type: Analog Input Module
• Input Channels: 8 differential inputs
• Signal Types Supported:
  • 0–20 mA / 4–20 mA
  • 0–10 V / ±10 V
  • 0–5 V / 1–5 V
• Resolution:
  • 16-bit (high precision)
• Input Type:
  • Voltage or current selectable per channel
• Isolation:
  • Channel-to-backplane isolation (industrial grade)
• Mounting:
  • DIN rail / CompactLogix 1769 system

(verified from Rockwell Automation product data)

What it does (simple explanation)

Field Transmitter
(Pressure / Temperature / Flow / Level)
↓
1769-IF8 Analog Input Module
↓
PLC CPU (e.g. 1769-L33ER)
↓
SCADA / HMI / Control logic

It converts real-world analog signals into digital PLC data.

Main Functions

• Reads analog process signals
• Converts current/voltage signals into PLC values
• Supports industrial instrumentation
• Provides real-time process monitoring
• Enables alarm and control logic based on analog values

Key Features

• 8 high-resolution analog input channels
• Supports both current and voltage signals
• Flexible configuration per channel
• 16-bit resolution for accurate measurement
• Built-in signal filtering (configurable)
• Diagnostic functions for open/over-range detection
• Compact modular design for 1769 systems

Applications

• Oil & gas process monitoring
• Water treatment systems
• Chemical plants
• HVAC control systems
• Industrial automation lines
• Flow, pressure, temperature measurement systems