Description

WOODWARD 8237-1246 is a critical overspeed protection module in the Woodward ProTech GII series,designed to detect abnormal overspeed and over acceleration states in rotating machinery such as turbines,generators,and compressors.The core of its design is to provide three non voting independent outputs,each of which can independently trigger an emergency stop(trip),greatly improving system safety and reliability.

This module has a 4-20 mA speed readout function,which can continuously monitor the speed status of the device.In addition,the acceleration detection function can identify abnormal speed mutations and provide early warning of potential risks.The module adopts an IP56 protective shell and a working range of**-20°C to+60°C**,which has excellent adaptability and durability in complex environments.

WOODWARD 8237-1246 can configure periodic internal testing processes to verify the functionality of each channel and ensure long-term reliability.The module meets the functional safety standards of SIL-3 level,with a fast response time(<12>

Main features and advantages

High security guarantee:

The WOODWARD 8237-1246 module has three independent circuit breaker output designs,each of which can trigger protection independently without the need for voting,improving system fault tolerance.

Quick response capability:

This module has an extremely fast response time(<12>

Speed and acceleration monitoring:

Built in 4-20 mA speed feedback and**acceleration detection**function,providing real-time operation status monitoring and abnormal trend warning.

Strong adaptability to the environment:

The module design complies with the IP56 protection level and is suitable for indoor and outdoor environments as well as strong dust and humidity.The operating temperature range is**-20°C to+60°C**.

Functional testing guarantee:

Support internal periodic testing,which can automatically detect the health status of the module itself and the sensor link,enhancing the system’s self diagnostic ability.

Compliant with high standard safety certification:

Compliant with SIL-3 safety level,meeting the functional safety requirements of IEC 61508,ensuring that industrial systems meet high reliability standards.

Reliable communication and convenient maintenance:

Through the RS-232/Modbus interface,engineers can read logs or remotely configure;Periodic testing and modular design reduce maintenance costs and improve efficiency.

technical specifications

Product Model:8237-1246

Manufacturer:WOODWARD

Product type:ProTech GII overspeed protection module

Open circuit output:3 independent non voting outputs

Speed feedback:4-20 mA analog output

Acceleration detection:supported

Response time:<12>

Protection level:IP56

Working temperature:-20°C to+60°C

Storage temperature:-20°C to+70°C

Output frequency:High frequency drive(≈60 kHz)

Communication interface:RS-232/Modbus

Internal testing:Supports periodic functional testing

Safety level:SIL-3

application area

The WOODWARD 8237-1246 module is widely used in overspeed/stall protection systems for power generation,oil and gas compression,refining,chemical engineering,and various rotating machinery.It is the preferred component for rotating equipment with extremely high safety requirements,with real-time detection of speed and acceleration,quick response to abnormal operating conditions,and prevention of accidents.Whether in steam turbines,gas compressors,or large generator sets,this module can provide reliable safety assurance and is compatible with control systems or DCS/PLC for intelligent operation and remote monitoring.

Related products

8237-1244/-1245/-1247:Other versions of the ProTech GII series have slightly different interfaces and configurations.

8237-1367/1368/1368:ProTech GII voting type overspeed protection module,using 2-out-of-3 logic.

8237-1370:ProTech GII model,supports special working condition settings.

5437-1119:ProTech GII replacement/spare module,compatible with 8237-1246 Rev D.

2300E series:Woodward accessory load sharing control module,can be used in combination.

Installation and maintenance

Preparation before installation:When installing WOODWARD 8237-1246,please disconnect the system power first,confirm that the control cabinet/IP56 housing is well grounded,and verify that the sensor type(MPU or active probe)is consistent with the module input settings.It is recommended to operate in a dust-free and moisture-proof environment,and reserve communication line interfaces for subsequent maintenance.

Maintenance suggestion:The module design supports periodic self check function.It is recommended to perform a complete test once a year and manually verify the 4-20 mA speed output,circuit breaker triggering accuracy,and sensor circuit response.Clean and inspect the sealing condition of the shell to ensure its protective performance.If a fault occurs,the corresponding channel can replace the module separately without stopping the machine to troubleshoot the entire system.