Honeywell 51191697-200 Galvanic Isolation Module

The Honeywell 51191697-200 is a galvanic isolation module engineered for Honeywell distributed control systems, functioning as an MTL4041B barrier interface. It provides up to 16 channels of galvanically isolated signal conditioning and supplies 24 VDC power to energize loop devices, ensuring safe signal transmission across TDC 2000, TDC 3000, and Experion PKS architectures.

Functional Role and System Integration

This module acts as a protective interface designed for use with high-level analog input (HLAI) and smart transmitter (STI) Field Termination Assemblies (FTAs). By providing galvanic isolation, it prevents ground loops and blocks hazardous voltages from transferring into sensitive control system electronics, supporting up to 16 input channels within a B series form factor measuring 307 mm (12.1 inches) in length.

Electrical and Safety Characteristics

The unit operates on a typical 24 VDC power supply and delivers sufficient DC output to energize connected 4-20 mA transmitters. It handles critical electrical boundary conditions with a maximum open-circuit voltage of 28 VDC, a minimum source resistance of 300 ohms, a maximum short-circuit current of 93 milliamps, and a maximum applied voltage rating of 250 Vrms.

Technical Specifications

Frequently Asked Questions

Q: Which field termination assemblies are compatible with the Honeywell 51191697-200 module?

A: This module is specifically designed for use with high-level analog input (HLAI) and smart transmitter (STI) Field Termination Assemblies.

Q: What power and signal functions does the module provide for field instruments?

A: It provides galvanic isolation while delivering 24 VDC power to energize standard 4-20 mA transmitters connected to the system.