Product Description: Woodward 5461-650 Temperature / Capacitance Input Transceiver Module

Product Model: 5461-650

Brand: Woodward

Product Type: High Precision Temperature / Capacitance Signal Input Interface Module (T/C Input Board)

I. Product Overview

The Woodward 5461-650 is a dedicated high-precision analog signal input module within the 5461 series. Its core function is to isolate, amplify, linearize, and convert industrial field thermal sensors (T/C), resistance thermometers (RTD), capacitance sensors, and 4-20mA standard signals into digital signals, which can be used by control systems (such as MicroNet, NetCon) for precise temperature, level, or position monitoring and control. It is specifically designed for critical condition monitoring of rotating machinery such as gas turbines, engines, and compressors, and is the core I/O component for achieving temperature closed-loop control and safety protection.

Core Focus: Temperature / Capacitance Signal Acquisition, Signal Isolation, High Precision AD Conversion, Industrial Field Anti-interference

Design Standards: Full Electrical Isolation, Wide Temperature Range, Industrial Class EMC Protection, Class I, Div 2 Hazardous Area Certification

Compatible Systems: Woodward MicroNet, NetCon, 505/723 Control System 

II. Core Technical Parameters

1. Electrical Specifications

Power Supply Voltage: 24 VDC (18–32 VDC)

Power Consumption: Typical 2.4 W @ 24 VDC

Input Channels: 8 independent isolated analog inputs

Supported Signal Types:

Temperature: Thermocouple (J/K/T/E/R/S/B types), Thermoresistor (RTD)

Standard Signals: 4–20 mA, 0–5 VDC, 0–10 VDC

Special Signals: Capacitive liquid level / displacement sensor signal

Measurement Accuracy: ±0.1% Full Scale (FS)

Resolution: 13 bits + sign bit

Isolation Voltage: 500 VDC (Channel – System Full Isolation)

Signal Processing: Hardware Filtering, Cold Junction Compensation, Linearization, Open Circuit Detection

Communication Interface: Modbus RTU (RS-485)

Status Indicators: Channel Operation / Fault LED Indicators

2. Mechanical and Environmental

Dimensions: 178 × 115 × 55 mm

Weight: Approximately 0.5 kg

Installation Method: Standard chassis slot installation

Operating Temperature: -40°C ～ +85°C

Storage Temperature: -55°C ～ +90°C

Vibration / Shock Resistance: MIL-STD-810G Military Standard

Protection Grade: IP65 (Dustproof, Splashproof Waterproof)

Safety Certification: CE, UL, Class I, Div 2

3. Performance Indicators

Response Time: < 10 ms

Temperature Drift: < ±25 ppm/°C

Common Mode Suppression Ratio: > 100 dB @ 50/60 Hz

Data Update Rate: 10 times/second

MTBF: > 500,000 hours

III. Main Functional Characteristics

8-channel Fully Isolated High-Precision Acquisition (Core)

8 independent isolated inputs, support thermocouples, thermoresistors, 4-20mA, capacitive signals

Each channel independent cold junction compensation, linearization, hardware filtering

±0.1% FS Ultra-High Precision, meet precise monitoring of critical temperature points

500 VDC Full Isolation, completely block ground loop, electromagnetic interference

Comprehensive Signal Diagnosis and Protection

Open Circuit Detection, Short Circuit Protection, Sensor Fault Alarm

Input Signal Over/Under Range Real-time Diagnosis

Non-volatile Storage: Channel Configuration, Calibration Parameters Power-off Persistence

Hardware Overvoltage, Reverse Connection, Surge Protection

Industrial-level Anti-Interference and Stability

-40°C ～ +85°C Wide Temperature Range, suitable for extreme industrial environments

Military-level Anti-Vibration / Anti-Impact, suitable for ships, vehicles, and field conditions

IP65 Protection, Class I, Div 2 Explosion-proof Certification

High Common Mode Suppression Ratio, stable without drift in strong electromagnetic environment

System Compatibility and Integration

Seamless Integration with Woodward MicroNet/NetCon Control System

Modbus RTU Communication, supports third-party DCS/PLC

Standard Hot Swap Design, online maintenance, no downtime required

Works with 5461 Series Speed, Pressure, Communication Modules

IV. Typical Application Scenarios

Gas Turbine: Cylinder Body Temperature, Exhaust Temperature, Bearing Temperature Monitoring at 8 Points

Industrial Engine: Cylinder Liner Water Temperature, Engine Oil Temperature, Turbocharger Temperature Control

Compressor / Pump: Bearing Temperature, Seal Temperature, Lubricating Oil Temperature Safety Protection

Power Generation System: Generator Stator, Rotor, Winding Temperature Distributed Acquisition

Oil/Gas / Petrochemical: Hazard Zone Temperature, Capacitive Liquid Level / Displacement Signal Acquisition

Industrial Furnace / Boiler: Multi-point Temperature Closed-loop Control and Over-temperature Protection

V. Product Advantages

High Precision Measurement: ±0.1% FS, Temperature Monitoring Zero Error Full isolation protection: 500 VDC isolation, strong anti-interference, high reliability

Multi-signal compatibility: Temperature / Standard / Capacitive signals are universal in one module

Industrial-grade quality: Wide temperature range, shock resistance, IP65, explosion-proof certification

Easy integration and maintenance: Hot-swappable, Modbus, LED diagnosis, rapid deployment

High cost-effectiveness: 8-channel high integration, reducing system wiring and cost

Six. Model Description

5461: Serial number (Industrial Control Module Series)

650: Hardware configuration code (8 channels, temperature / capacitance / 4-20mA input, 500 VDC isolation, 24 VDC, wide temperature range, Class I, Div 2)

Seven. Accessories

Sensors: Thermocouple, thermoresistor, capacitive liquid level / displacement sensor

Connection cables: Shielded compensation wire, dedicated communication cable

Installation accessories: Cabinet slot bracket, fixing screws

Configuration software: Woodward ToolKit channel parameter configuration, calibration tool