WOODWARD 9907-149 120 Vac/dc device

WOODWARD 9907-149 120 Vac/dc device

ABOUT THE 9907-149

ProTech model 9907-149 is a 120 Vac/dc device. There is a separate power supply for each of the three speed-sensing units in this system. This is part of the modular design of this Woodward overspeed protection device that enables such features as hot replacement of an individual unit and testing of individual units without taking the prime mover offline.

Speed-sensing units A, B, and C in model 9907-149 are identical. On top of having separate power supplies, the units also have separate operator interfaces and alarm systems. The three units are configured for a two-out-of-three voting method. Prior to this hardware vote, the three units act independently, monitoring prime mover speed with magnetic pickups (MPUs) and individually performing speed calculations.

Tunable parameters are set when the units are in PROGRAM mode. These parameters are:

·Trip Speed Set Point (250 rpm to 25,000 rpm)

·MPU Gear Teeth (20 to 120)

·MPU Failed Timeout (1 sec to 533 min 20 sec)

·MPU Failed Set Point (100 rpm to 25,000 rpm)

·Trip on MPU Failure

·Timer Starts on Reset

·Alarm If Speed Is < MPU Failed Set Point

Product Features and Functions

·Speed control: capable of monitoring and regulating the speed of an engine or rotating machinery to achieve precise speed control.

·High performance and reliability: with high precision and reliability, it is suitable for various industrial and traffic application scenarios.

·Digital Control: Adopts digital control technology, providing flexible control logic and parameter configuration capability.

·Multi-functional interfaces: Supports a variety of input and output interfaces, facilitating data exchange and communication with sensors, actuators and other control devices.

·Protection Functions: Built-in a variety of protection functions, such as overload protection, overvoltage protection and overspeed protection, to ensure the safe operation of the equipment.

·Remote monitoring: may support remote monitoring and control functions, convenient for users to carry out remote operation and management.

·Data Recording and Analysis: Usually with data recording and analysis functions, it can record and analyse equipment operation data to help users optimise operation and maintenance strategies.

TECHNICAL  SPECIFICATIONS

Dimensions：W19in x H12.244in x D5.62in

Features：Hot Replacement

Input Voltage：120 Vac/dc

Keypad/Display：1 display and keypad per module

Operating Temperature：–13 to +140 °F

Weight：Less than 17 lbs

Application Scenarios

The WOODWARD 9907-149 governor control unit has a wide range of applications in a number of fields, including but not limited to:

Power Generation: for generator speed control in power plants.

Aerospace: for engine control in aircraft and helicopters.

Industrial: for speed control of rotating equipment in industrial production lines.

Transport: for engine speed control in railways and ships.