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Description
Product Description
9907-149 WOODWARD electronic overspeed trip device
Function:Monitor the speed of rotating machinery and provide overspeed protection
Usage:Used for various industrial applications,such as:
Pump
Fan
Turbine
Centrifuge
Conveyor belt
Features:
High precision and reliability
Programmable speed set point and trip delay time
Multiple output types,including relays,transistors,and analog signals
Durable and sturdy design that can withstand harsh environmental conditions
Easy to install and maintain
Product Description
The 9907-149 WOODWARD electronic overspeed trip device is a powerful electronic overspeed trip device designed specifically for industrial applications.It can monitor the speed of rotating machinery and provide overspeed protection.
This device has high precision and reliability,and provides programmable speed setting points and trip delay time.It provides multiple output types,including relays,transistors,and analog signals,to meet different application requirements.
9907-149 Woodward’s ProTech 203 electronic overspeed trip device senses the speed of the prime mover through three magnetic sensors(MPUs).
9907-149 is a 120 Vac/dc device.The three speed sensing units in this system all have a separate power supply.This is part of the modular design of the Woodward overspeed protection device,which can achieve functions such as hot replacement and testing of individual units without taking the prime mover offline.
The speed sensing units A,B,and C in the 9907-149 model are the same.In addition to having an independent power supply,these devices also have independent operator interfaces and alarm systems.These three units are configured as a three in two voting method.Before this hardware vote,the three units run independently,monitoring the speed of the prime mover through a magnetic pickup unit(MPU)and performing speed calculations separately.
The three units that make up ProTech model 9907-149 must be programmed using the same trip point.The programming mode can be accessed by connecting the key switch to all three units.Due to the modular design of the Woodward system,each unit is individually programmed.
When the device is in programming mode,adjustable parameters can be set.These parameters are:
Trip speed set point(250 rpm to 25000 rpm)
Number of MPU gear teeth(20 to 120)
MPU failure timeout(1 second to 533 minutes and 20 seconds)
MPU set point fault(100 rpm to 25000 rpm)
MPU fault trip
Timer starts on reset
If speed<MPU failure set point triggers an alarm
When the device is in monitoring mode,these parameters,as well as the current speed,peak speed,light test,and trip reason,can be viewed on the device operator interface.The current speed is the first parameter displayed by default.
The 9907-149 adopts a sturdy and durable design that can withstand harsh environmental conditions and has the following characteristics:
Protection level IP67
Working temperature range-40°C to+85°C
Vibration and impact resistance
Product parameters
Speed measurement range:0 to 20000 RPM
Accuracy:±0.25%FS
Resolution:0.1 RPM
Power supply voltage:24VDC or 120VAC
Output types:relay,transistor,analog signal
Product specifications
Dimensions:114 mm x 89 mm x 38 mm
Weight:340 g
Application field
Oil and natural gas
Chemical industry
Electricity
Water treatment
Metallurgy
Paper making
Food processing
Rubber and plastic
9907-149 WOODWARD
9907-149 WOODWARD
9907-149 WOODWARD
