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The Honeywell 51309218-175, also known as the MC-TAMR03 Low Level Multiplexer RTD FTA (Field Termination Assembly), is designed for use within Honeywell’s distributed control systems (DCS), particularly the C3000 series. This analog input multiplexer module primarily consolidates multiple analog signals from Resistance Temperature Detectors (RTDs), aggregating them into unified output signals for efficient processing. It is applicable in industries where precise temperature monitoring and control are critical, such as power plants, chemical processing, and industrial manufacturing, making it well-suited for integration in advanced control architecture requiring multiple channel inputs.
- 51309218-175
This low-level analog input device supports typically 16 input channels and is optimized to handle input signal ranges from approximately -40 to 210 millivolts. It converts these into standard output ranges (such as 4-20 mA), ensuring signal compatibility with Honeywell’s DCS hardware. Its design was historically targeted at consolidating temperature sensor signals, allowing for efficient multiplexing that reduces wiring complexity and enhances signal integrity in industrial environments. However, it is important to note from field reports that earlier versions of this model, including the 51309218-175, experienced some reliability issues due to relay defects, leading Honeywell to replace it in newer systems with models featuring solid-state relays for increased robustness.
Physically, the 51309218-175 is compact and designed for easy mounting in control cabinets. While it does not support redundancy and lacks CE compliance, adherence to Honeywell’s installation and maintenance guidelines can ensure reliable operation. Periodic visual inspections, signal diagnostics, and firmware validation are advisable to maintain operational integrity. The module is ideal for engineers aiming to modernize or maintain legacy Honeywell DCS installations requiring precise RTD signal handling.
Honeywell typically offers a warranty covering defects in workmanship, with technical documentation and support available to aid troubleshooting and maintenance. This support extends to online diagnostics and firmware updates, ensuring continued compatibility with evolving control system requirements. The Honeywell 51309218-175 thus remains a relevant component in temperature measurement and control scenarios within Honeywell DCS frameworks, though users should consider updated replacement models when possible for enhanced reliability.
| Parameter | Value |
|---|---|
| Model | 51309218-175 |
| Brand | Honeywell |
| Type | Low-Level Analog Input Multiplexer RTD FTA |
| Number of Channels | Typically 16 |
| Input Range | -40 to 210 millivolts |
| Output Range | 4 to 20 mA |
| Application | Temperature monitoring in Honeywell C3000 DCS |
| Module Type | Field Termination Assembly (FTA) |
| Redundancy Support | None |
| Certification | Not CE compliant |
| Physical Size | Compact for cabinet mounting |
Installation advice highlights ensuring compatibility with Honeywell C3000 analog input channels, avoiding relay wear issues by timely inspection, and following grounding and shielding best practices for the analog lines. Maintenance includes scheduled visual checks and, when applicable, upgrading to solid-state relay models like 51305907-175 for improved field reliability.
