Description
- Model Number: 51202329-606
- Series: TDC 3000 / TPS (TotalPlant Solution)
- Module Type: Low Level Analog Input (LLAI) Multiplexer (Mux)
- Input Channels: 16 Channels
- Input Signal Types: * Thermocouples (Type J, K, T, E, R, S, B)
- RTDs (Pt100, etc., via specific terminal assemblies)
- Low Level Millivolt (mV) signals
- Communication: Connected to an I/O Link via a File or Processor
- Operating Voltage: 24V DC (Internal system power)
Product Description The Honeywell 51202329-606 is a 16-channel Low Level Analog Input (LLAI) Multiplexer module designed for use within the legacy TDC 3000 and TPS process control systems. This module is specifically engineered to handle sensitive, low-voltage signals from temperature sensors and millivolt transmitters. It performs high-precision signal conditioning, cold junction compensation (for thermocouples), and analog-to-digital conversion before passing the data to the High Level Data Link (HLDL) or I/O Link. The “-606” suffix typically denotes a specific hardware revision or a conformal coating variant intended for increased durability in corrosive industrial environments.

51202329-606

51202329-606
Application Areas This module is a staple in high-temperature process monitoring and control. It is commonly found in:
- Refining and Petrochemicals: Monitoring furnace tube temperatures and reactor bed profiles.
- Power Generation: Tracking steam and boiler metal temperatures.
- Metals Processing: Managing thermal cycles in blast furnaces and heat-treatment ovens.
- Glass and Ceramics: Precise temperature control in high-heat kilns.
Product Specifications
- Weight: 0.60 kg
- Dimensions: 120 mm x 180 mm x 25 mm (Standard TDC 3000 card size)
- Country of Origin: USA
- Update Rate: Approximately 1 second for all 16 channels (standard scanning)
Operational Precautions
- Cold Junction Compensation: For thermocouple applications, ensure the associated Field Termination Assembly (FTA) has a functional Reference Junction sensor. If this sensor fails, all temperature readings on the module will become inaccurate.
- Shielding and Grounding: Low-level signals are highly susceptible to electromagnetic interference (EMI). Ensure that all sensor leads are properly shielded and that shields are grounded at the FTA end only to prevent ground loops.
- Slot Compatibility: This module must be installed in a compatible I/O File slot. Verify the backplane dip-switch settings if the module is not recognized by the system software upon insertion.
- Handling: Like most TDC 3000 components, this board is sensitive to Electrostatic Discharge (ESD). Use a grounded wrist strap when removing the module from its protective anti-static bag or the I/O rack.
Recommended Similar Product Models
| Model Number | Product Category | Feature Set |
|---|---|---|
| 51304441-100 | LLAI Processor | Associated Processing Module |
| 51304487-150 | HLAI Module | High Level (4-20mA) Analog Input |
| 51202329-506 | LLAI Mux | Non-coated or earlier revision |
| 51304362-100 | FTA | Field Termination Assembly for LLAI |
| 51309152-175 | Power Supply | TDC 3000 Rack Power Module |
