Allen-Bradley 1794-IE8 FLEX I/O 8-Channel Analog Input Module

8‑channel analog voltage/current input module for Flex I/O systems, supporting 0‑20 mA, 4‑20 mA, ±10V, and 0‑10V signals for precision monitoring of sensors and transmitters in industrial automation.

The Allen‑Bradley 1794‑IE8 is a Flex I/O analog input module designed for distributed I/O systems. It features 8 single‑ended input channels, each independently configurable for voltage or current signals, allowing connection to a wide range of field devices in process control, factory automation, and energy management applications. Operating on 24V DC field power, the module is compatible with Flex I/O communication adapters and mounts on 1794‑TB2, ‑TB3, or ‑TB3S terminal bases. Used in Flex I/O distributed I/O systems with terminal bases, I/O modules, and communication adapters.

Applications:

• Process control and instrumentation (temperature, pressure, flow, level)

• Factory automation and machine monitoring

• Energy management systems and power monitoring

• Environmental monitoring (HVAC, clean rooms)

• Water and wastewater treatment

Key Features:

• 8 single‑ended analog input channels

• Configurable input ranges: 0‑20 mA, 4‑20 mA, ±10V, 0‑10V

• 12‑bit resolution (unipolar), 11‑bit + sign (bipolar)

• Configurable conversion time (10‑100 ms per channel)

• Removal and Insertion Under Power (RIUP) for hot replacement

• Diagnostic LEDs for module and channel status

Technical Specifications:

• Inputs: 8 analog (single‑ended)

• Voltage ranges: ±10V, 0‑10V

• Current ranges: 0‑20 mA, 4‑20 mA

• Resolution: 12‑bit unipolar / 11‑bit + sign bipolar

• Backplane current: 20 mA @ 5V DC

• Field power: 24V DC (19.2‑31.2V DC)

• Operating temperature: 0°C to 55°C

• Terminal bases: 1794‑TB2, ‑TB3, ‑TB3S

• Mounting: DIN rail (via terminal base)

System Integration:

• I/O System: Flex I/O 1794 series

• Communication Adapters: 1794‑AENT (EtherNet/IP), 1794‑ACN (ControlNet), 1794‑ASB (Remote I/O)

• Compatible I/O Modules: 1794‑IE12 (12‑channel analog input), 1794‑OE4 (analog output), 1794‑IB16 (digital input)

• Terminal Bases: 1794‑TB2, 1794‑TB3, 1794‑TB3S

• Software: Studio 5000, RSLogix 5000

Related Products:

• Communication Adapter: 1794‑AENT Flex I/O EtherNet/IP Adapter – network connection

• Analog Input (12‑Channel): 1794‑IE12 – higher density analog input

• Analog Output Module: 1794‑OE4 – output pairing

• Terminal Base: 1794‑TB3 – mounting base

PLC ERA is an independent industrial automation distributor. Products are sourced from established supply channels and inspected before shipment. International shipping available.