Allen-Bradley 1794-IE8H | Flex I/O HART 8-Channel Analog Module

Product Overview

The 1794-IE8H is a high-resolution Flex I/O HART analog input module designed for precise industrial measurements.
It features eight single-ended analog input channels supporting 0-20 mA and 4-20 mA signals.
With a 16-bit resolution, this module achieves 0.1% full-scale accuracy at 20°C and minimal temperature drift.
HART protocol support enables access to device data and operational status for advanced diagnostics.
The module integrates with ControlNet, Ethernet, and ProfiBus adapters for flexible network connectivity.

Key Features

• Supports eight (8) single-ended analog input channels, non-isolated.

• High-precision 16-bit resolution with 0.1% full-scale accuracy at 20°C.

• Accuracy drift of only 0.05% across 0–55°C temperature range.

• Step response to 99% within 80 ms for fast signal processing.

• Compatible with 1794-TB3G and 1794-TB3GS terminal bases.

• LED indicators: 8 red fault, 8 yellow channel, 1 green power status.

• External DC supply range: 19–31.2 V DC; nominal 24 V DC.

• Mounting: DIN Rail; isolation voltage: 50 V continuous.

• Power dissipation: 3.9 W max, thermal dissipation: 13.5 BTU/hr.

Technical Specifications

Applications

• Industrial automation requiring precise analog measurements.

• Process control systems utilizing HART-compatible sensors.

• SCADA systems and networked Flex I/O setups.

• Integration with ControlNet, Ethernet, or ProfiBus communication adapters.