Product Description: Woodward 5461-652 Current Input Module

Product Model: 5461-652

Brand: Woodward

Product Type: 8-channel high-precision current signal input module (Current Input Module)

I. Product Overview

The Woodward 5461-652 is a dedicated analog current signal acquisition module within the 5461 series. Its core function is to perform high-precision, fully isolated data acquisition and conversion of industrial field standard 4–20mA current signals. It is specifically designed for connecting various transmitters (pressure, flow, level, temperature) and instrument outputs, providing real-time, reliable process variable data for control systems (such as MicroNet, NetCon), and forming closed-loop control loops. It is a key signal acquisition unit in the 5461 series I/O system.

Core Focus: 4–20mA current signal acquisition, signal isolation, high-precision AD conversion, industrial field anti-interference

Design Standards: Full electrical isolation, wide temperature range, industrial-grade EMC protection, Class I, Div 2 hazardous area certification

Compatible Systems: Woodward MicroNet, NetCon, 505/723 control systems 

II. Core Technical Parameters

1. Electrical Specifications

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

Power Consumption: ≤ 1.0 W

Input Channels: 8 independent isolated analog inputs

Input Signal Type: 4–20 mA (standard industrial current signal)

Measurement Accuracy: ±0.1% Full Scale (FS)

Resolution: 16 bits

Isolation Voltage: 500 VDC (channel – system full isolation)

Input Impedance: ≤ 100 Ω

Signal Processing: Hardware Filtering, 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 0.45 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 Level: IP65

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 Electrical Isolated Inputs, specially designed for 4–20mA standard signals

±0.1% FS Ultra-High Precision, Ensuring Zero Error in Process Data Acquisition

500 VDC Full Isolation, Effectively Blocking Ground Circuits, Electromagnetic Interference

Each Channel Independent Hardware Filtering, Suppressing High-Frequency Noise in the Field

Comprehensive Signal Diagnosis and Protection

Open Circuit Detection: Real-time Monitoring of Sensor Circuits, Immediate Alarm for Open Circuits

Overcurrent, Reverse Connection, Surge Protection to Prevent Module and Sensor Damage

Non-Volatile Storage: Channel Configuration, Calibration Parameters Remain After Power Loss

Real-time Diagnosis and Status Feedback for Input Signal Overrange, Underrange

Industrial Grade Reliability and Stability

-40°C ～ +85°C Wide Temperature Operating Range, Suitable for Extreme Industrial Environments

Military Grade Anti-Vibration / Anti-Impact, Suitable for Shipboard, Vehicle-mounted, and Field Conditions

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

High Common Mode Suppression Ratio, Stable without Drift in Strong Electromagnetic Environments

System Compatibility and Integration

Seamless Integration with Woodward MicroNet/NetCon/505/723 Control System

Modbus RTU Communication Protocol, Supports Integration with Third-Party PLC/DCS Systems

Standard Hot Swap Design, Supports Online Maintenance, No Shutdown Required

Seamless Collaboration with 5461 Series AI (Temperature / Voltage), AO, DI, DO Modules

IV. Typical Application Scenarios

Process Control: Acquisition of Pressure, Flow, Level, Temperature Transmitter 4–20mA Signals

Gas / Steam Turbine: Oil Pressure, Air Pressure, Oil Temperature, Vibration Monitoring

Engine Control: Fuel Pressure, Lubricating Oil Pressure, Cooling Liquid Temperature Acquisition

Compressor / Pump: Inlet / Outlet Pressure, Bearing Vibration, Seal Leakage Monitoring

Power Generation System: Generator Excitation Current, Power Factor, Bus Voltage Monitoring

Oil / Petrochemical: High-Precision, Safe Acquisition of Transmitter Signals in Hazardous Areas

Industrial Furnace / Boiler: Furnace Pressure, Flue Gas Flow, Feedwater Flow Closed-loop Control

V. Product Advantages

Specialized High Precision: 4–20mA Specialized, ±0.1% FS, Top Precision for Industrial Current Acquisition Full isolation protection: 500 VDC isolation, strong anti-interference, high reliability, and safety guaranteed

8-channel high integration: single module 8 channels, significantly saving cabinet space and wiring costs

Industrial-grade quality: wide temperature range, shock resistance, IP65, explosion-proof, worry-free in harsh environments

Easy integration and maintenance: hot-swappable, Modbus, LED diagnosis, quick deployment

High cost-effectiveness: professional-level performance, universal price, reducing the total system cost

VI. Model Description

5461: Serial number (Industrial Control Module Series)

652: Hardware configuration code (8 channels, AI, 4–20mA current input, 500 VDC isolation, 24 VDC, wide temperature range, Class I, Div 2)

VII. Accessories

Sensors: Pressure transducer, flow transducer, level transducer, temperature transducer

Connection cables: Shielded twisted pair, dedicated analog input cable

Installation accessories: Cabinet slot bracket, fixing screws

Configuration software: Woodward ToolKit channel parameter configuration, calibration tool