1794-IF8IH

Product Overview

The 1794-IF8IH is an isolated 8-channel HART analog input module for the Allen-Bradley FLEX I/O system.

Technical Specifications

Module Identity

• Model: 1794-IF8IH

Key Features

• Number of Inputs: 8 single-ended, isolated channels

• HART Compatibility: HART 5

• Device Support: 2, 3, and 4-wire transmitters

• Data Formats: Engineering Units, Percent of Full Scale, RAW/Proportional Count

• Resolution: 16-bit unipolar; 15-bit + sign bipolar

• Conversion Type: Sigma Delta

Input Specifications

• Input Signal: 4..20 mA or 0...20 mA (user configurable)

• Unipolar Current: 0.320 µA/count

• Bipolar Current: 0.640 µA/count

• Default Output (unconfigured): 0 mA

• Normal Mode Rejection: >70 dB @ 50/60 Hz

• Common Mode Rejection: >60 dB @ 50/60 Hz

Electrical & Physical

• External Power Supply: 19.2..31.2 VDC

• External Supply Current: 190 mA @ 24 VDC

• FlexBus Current: 80 mA @ 5 VDC

• Max. Power Dissipation: 4.8 W

• Approx. Dimensions (HxWxD): 94 x 94 x 66 mm

• Recommended Terminal Base: 1794-TB3, 1794-TB3S

• Wire Type: Shielded

• Wiring Category: Category 2 (signal), Category 3 (power)

Operational

• Ambient Temperature: 0°C to 55°C

• Temperature Code: T4

• Enclosure Rating: Open-style

• Keyswitch Position: 3

• Indicator (Field Side): 1 red/green power/status LED

---