Honeywell MC-GAIH13 51304718-175 Galvanically Isolated HLAI/STI FTA Module

Product Description

The MC-GAIH13 (51304718-175) is a high-performance Field Termination Assembly (FTA) engineered specifically for Honeywell Experion PKS and TDC 3000 control systems. This 16-channel interface is designed to support High-Level Analog Input (HLAI) and Smart Transmitter Interface (STI) signals, providing a secure bridge between field instrumentation and the system's I/O processors. A defining feature of this assembly is its integrated galvanic isolation, which protects the controller from high-voltage transients and eliminates ground loop interference. The MC-GAIH13 is fully conformally coated, making it resilient against atmospheric corrosion in harsh industrial sectors like oil and gas or chemical processing.

Technical Specifications

• Model Identification: MC-GAIH13

• Part Number: 51304718-175

• Functional Category: HLAI / STI Field Termination Assembly

• Channel Density: 16 Independent Input Channels

• Isolation Type: Galvanic / Intrinsically Safe (GI/IS) Support

• System Connectivity: Redundant I/O Processor Support

• Terminal Interface: Compression-style screw terminals

• Environmental Protection: Full Conformal Coating

• Physical Profile: Size B Assembly (12 inches / 307 mm)

• Shipping Mass: 2.0 kg

Galvanic Isolation and Safety

The MC-GAIH13 (51304718-175) is optimized for applications where signal integrity and hardware protection are paramount. The galvanic isolation barrier ensures that even in the event of field-side electrical failure, the sensitive internal logic of the control system remains undamaged. By supporting both standard analog and smart transmitters, the assembly offers flexibility for plant-wide upgrades. Furthermore, its redundancy-capable architecture allows for dual I/O link connections, ensuring that process data remains available during a primary processor failover.

Frequently Asked Questions

• What is the advantage of the MC-series over the standard MU-series?

  The MC-GAIH13 includes a conformal coating that safeguards the PCB against moisture, dust, and corrosive gases. This makes it far more durable for long-term deployment in non-climate-controlled environments compared to the non-coated MU-equivalent.

• Does this FTA support redundant wiring?

  Yes, the MC-GAIH13 (51304718-175) features ports for two I/O link cables, allowing it to interface simultaneously with both primary and secondary I/O processors for maximum system uptime.