5437-417 - 24-channel Analog Input Module

SPECIFICATIONS:

Part Number: 5437-417
Manufacturer: Woodward
Series: MicroNet / MicroNet TMR
Product Type: TMR Analog Input Module (24/10)
Input Channels: 24 Analog Inputs
Input Range: 4–20 mA, 0–5 V dc, or -10 to +10 V dc (Configurable)
Resolution: 16-bit Analog-to-Digital Conversion
Architecture: Triple Modular Redundant (TMR)
Isolation: 500 V ac (Channel-to-Chassis)
Scan Rate: 5 ms (All channels)
Operating Temperature: -30 °C to +65 °C (-22 °F to +149 °F)
Availability: In Stock
Country of Origin: USA

FUNCTIONAL DESCRIPTION:

The 5437-417 is a high-density TMR Analog Input Module specifically designed and manufactured for the Woodward MicroNet TMR (Triple Modular Redundant) system. As a core component of the 24/10 I/O suite, it provides 24 high-accuracy analog input channels designed for mission-critical applications. This module interfaces with essential field transmitters monitoring temperature, pressure, and flow to provide the real-time data required for complex turbine governing and protection algorithms.

TMR FAULT TOLERANCE & VOTING:

As a native TMR module, the 5437-417 operates within a triplicated control environment to ensure maximum system availability.

• Redundant Acquisition: Each field signal is fanned out to three independent acquisition circuits within the module, which communicate with the three redundant processors (R, S, and T).
• Hardware Voting: The system utilizes sophisticated voting logic to compare the three readings. If one channel deviates due to a hardware fault or signal noise, the system automatically switches to the remaining healthy channels without interrupting the control process.
• Reliability: This architecture ensures that the failure of a single sensor or internal component cannot cause a nuisance trip or loss of turbine control.

ADVANCED SIGNAL CONDITIONING:

To maintain precision in electromagnetically noisy industrial environments, the Analog Input Module incorporates:

• Digital Filtering: Selectable filters eliminate high-frequency noise and process pulsations from the incoming signals.
• On-Board Diagnostics: Continuous self-testing of the A/D converters and internal reference voltages ensures the integrity of the data. Any deviation is immediately flagged to the GAP (Graphical Application Programmer) software as a module alarm.
• Configurability: Individual channels can be configured for different signal types (current or voltage) via software settings and proper terminal board jumpers.

WIRING & INTERCONNECTIVITY:

The Analog Input Module is typically paired with a dedicated TMR Analog Input Terminal Board (AITB). Connection to the field is made via high-density cables designed to ensure minimal signal degradation. The board's electrical layout is specifically optimized to isolate field-side transients from the sensitive logic backplane, protecting the central CPU from external electrical faults.

WHY BUY FROM WOC:

WOC is a premier provider of legacy and current Woodward control hardware. We maintain a significant inventory of the 5437-417, available in both unused and professionally refurbished conditions. Each TMR analog module undergoes rigorous testing on multi-channel simulators to verify accuracy across all 24 channels and confirm flawless TMR voting. Backed by a standard warranty and 24/7 technical support, we ensure your critical monitoring systems remain precise and reliable.

FREQUENTLY ASKED QUESTIONS:

What is the 5437-417?

It is a 24-channel Analog Input Module designed for the Woodward MicroNet TMR system. It serves as the primary interface for landing 4–20 mA or voltage-based field signals into redundant control processors.

How does TMR voting protect the turbine?

The module triplicates each input signal. If one internal circuit fails or a signal wire becomes loose, the TMR processors detect the mismatch and ignore the faulty value while maintaining control based on the two healthy signals, preventing a system trip.

Can I mix different signal types on this module?

Yes, the Analog Input Module is highly configurable. Channels can be individually set for different signal ranges (such as 4–20 mA or ±10 V) through the GAP software and hardware settings on the associated terminal board.

Is the Analog Input Module hot-swappable?

Yes, when used in a TMR chassis with redundant modules, the 5437-417 supports hot-swapping. This allows for the replacement of a faulty module while the turbine is online, as the remaining processors continue to manage the process without interruption.