5437-051
May 18, 2026

5437-051

Part Number: 5437-051 Manufacturer: Woodward, USA Product Type: 32-Channel Digital Relay Field Terminal I/O Module Matching Controller: Woodward 505 / 505E / 505H Steam Turbine Digital Governor Function: Extended discrete relay output, unit trip logic, safety interlock, alarm signal transmission, grid-connected & load-sharing logic expansion for power plant turbine control systems.

Description

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Part Number: 5437-051
Manufacturer: Woodward, USA
Product Type: 32-Channel Digital Relay Field Terminal I/O Module
Matching Controller: Woodward 505 / 505E / 505H Steam Turbine Digital Governor
Function: Extended discrete relay output, unit trip logic, safety interlock, alarm signal transmission, grid-connected & load-sharing logic expansion for power plant turbine control systems.

2. General Specifications

Supply Voltage: 18–32 VDC, nominal 24 VDC
Isolation Grade: 1500 VDC I/O circuit isolation; 500 VDC power-logic isolation
Mounting Mode: Standard 35mm DIN rail mounting, panel mounting optional
Protection Class: IP20
Operating Temperature: -40 ℃ to +85 ℃
Storage Temperature: -45 ℃ to +90 ℃
Humidity: 5%–95% RH, non-condensing
Vibration Resistance: 10–150 Hz, 2G continuous operation
Weight: Approx. 1.4 kg
Certifications: CE, UL, Class 1 Div 2 Hazardous Location Approval
Warranty Period: 12 months

3. Electrical Parameters

Digital Relay Output: 32 channels
Relay Rating: 24 VDC / 5 A, 250 VAC resistive load
Communication Interface: RS232, RS485
Communication Protocol: Modbus RTU / Modbus TCP
Signal Compatibility: Direct matching Woodward I/H converters, hydraulic actuators, DCS & PLC system discrete signals

4. Key Features

  • High-density 32-way relay output, meets complex turbine protection and interlock logic requirements

  • Full electrical isolation design, strong anti-electromagnetic interference in industrial power plants

  • Wide DC voltage input, adapts to unstable power supply environment of power stations

  • Wide temperature adaptability, suitable for harsh working conditions of petrochemical, thermal power and offshore platforms

  • Plug-and-play wiring, easy configuration, maintenance and on-site debugging

  • Perfectly compatible with 505 series governor system, expand unit trip, overspeed alarm, grid-connected interlock and other functions

5. Typical Applications

  • Steam turbine & gas turbine unit emergency trip and safety interlock control

  • Generator set parallel operation, load distribution logic signal expansion

  • Power plant ESD emergency shutdown system discrete signal linkage

  • Petrochemical, natural gas pipeline turbine drive unit alarm and protection logic

  • Hazardous area industrial turbine control system discrete I/O expansion


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