Description

WOODWARD 9907-1200 is a high-performance CPC-II(Current to Pressure Converter,Generation II)current to pressure converter designed by WOODWARD for precise control of single acting steam turbine valve servo mechanisms.It is an electro-hydraulic pressure regulating valve control device.As an enhanced dynamic version of the second-generation current pressure converter,WOODWARD 9907-1200 is particularly suitable for steam turbine valve control and related turbine speed and load control applications that require fast response and high precision.WOODWARD 9907-1200 is capable of receiving pressure demand signals of 4-20 mA and accurately controlling hydraulic oil pressure to precisely locate single acting steam turbine speed control valves.Its excellent precision and resolution make it an ideal choice for steam turbine control systems.In the automation system,WOODWARD 9907-1200 not only provides reliable conversion of electrical signals to hydraulic pressure,but also enhances the stability and reliability of the entire steam turbine control system through its enhanced dynamic performance and redundant configuration capability,providing key guarantees for users to achieve efficient and safe energy production.

9907-1200 WOODWARD

technical specifications

Product model:9907-1200

manufacturer:WOODWARD

Product Type:Current Pressure Converter(CPC-II)

Pressure range:0-10 bar/0-145 psi

Input signal:4-20 mA

Output:Electro hydraulic pressure control

Working temperature:-40 to 70°C(-40 to 158°F)

Supply voltage:+24 VDC(usually)

Current consumption:approximately 1 A

Protection level:IEC 60529,IP56(typical value)

Main features and advantages

The WOODWARD 9907-1200 CPC-II current pressure converter has several significant features and advantages,making it perform well in the field of steam turbine control.Its enhanced dynamic performance provides faster response speed and higher control accuracy,enabling precise positioning of steam turbine valves and optimizing turbine speed and load control.WOODWARD 9907-1200 can be configured to accept redundant pressure demand inputs from one or two controllers,enhancing system reliability,especially for critical steam turbine applications,ensuring continuous operation and high availability of equipment.The built-in fail safe mechanism,through the internal valve return spring,can force the CPC-II to enter the safe position in case of internal unit failure(such as power failure,sensor failure,or processor failure),ensuring the safe closure of the turbine control valve.WOODWARD 9907-1200 features a robust and durable design,including powerful actuators,corrosion-resistant materials,a single movable rotary valve,and a self-cleaning port design,enabling it to operate reliably in harsh environments where oil or pollutants may be present.In addition,WOODWARD 9907-1200 also provides a 4-20 mA output channel for controlling oil pressure,as well as unit alarm and shutdown relay outputs,making it convenient for system controllers or factory DCS to monitor equipment status.

9907-1200 WOODWARD

application area

WOODWARD 9907-1200 CPC-II current pressure converter is mainly used in steam turbine control systems for precise control of the position of single acting steam turbine speed control valves.Its high precision and fast response characteristics make it very suitable for applications that require precise control of steam flow and pressure,such as turbine speed and load control in power plants.The redundant configuration capability of WOODWARD 9907-1200 makes it widely used in critical steam turbine applications that require extremely high reliability of equipment operation,such as large industrial drive turbines and power generation turbines.In addition,WOODWARD 9907-1200 is also suitable for other industrial control applications that require converting electrical signals into precise hydraulic pressure,especially in valve control scenarios that require high precision and fast dynamic response.With its robust design and tolerance to oil contamination,WOODWARD 9907-1200 can operate stably and reliably in various harsh industrial environments.

Related products

The products related to WOODWARD 9907-1200 CPC-II current pressure converter include:

WOODWARD 9907-1199:Similar CPC-II models,but may be applicable to different hazardous area levels.

WOODWARD 9907-1197/9907-1198:Provide a higher maximum output pressure range,suitable for applications that require higher control pressure.

WOODWARD 505 Turbine Controller:A digital turbine controller used in conjunction with 9907-1200 to control the speed and load of a steam turbine.

WOODWARD 8200 series controllers:Other types of turbine controllers may be compatible with 9907-1200.

WOODWARD actuator:Used in conjunction with hydraulic pressure output from 9907-1200,it directly drives steam turbine valves.

Pressure sensor:used to monitor the pressure of hydraulic systems and can form a closed-loop control with 9907-1200.

WOODWARD Service Tool software:used for configuring,calibrating,and diagnosing 9907-1200.

Preparation before installation:Before installing the WOODWARD 9907-1200 CPC-II current pressure converter,please carefully read and follow the installation manual and safety guidelines provided by WOODWARD.Ensure that the installation environment meets the working temperature and humidity requirements of 9907-1200,and consider its explosion-proof rating(Zone 2).Check if the received WOODWARD 9907-1200 module is intact and confirm that all necessary accessories are included in the packaging.According to the hydraulic system design,prepare suitable hydraulic pipelines and joints to ensure cleanliness and compliance with pressure rating requirements.Confirm that the 4-20 mA signal and power supply provided by the control system meet the specifications of 9907-1200.Before making electrical and hydraulic connections,be sure to disconnect the system power supply to ensure safety.Connect the control signal line and power line to the corresponding terminals of WOODWARD 9907-1200 according to the wiring diagram.Connect the hydraulic lines to the inlet,control,and return ports of 9907-1200,ensuring a secure and leak free connection.

Maintenance suggestion:The maintenance of WOODWARD 9907-1200 CPC-II current pressure converter mainly focuses on keeping the hydraulic oil clean and regularly checking the operating status of the equipment.It is recommended to regularly check the oil level and quality of hydraulic oil,and replace it according to the manufacturer’s recommendations.Observe the status of the indicator lights on the WOODWARD 9907-1200 module,promptly detect and handle any abnormal situations.Regularly check for leaks in hydraulic pipelines and joints,and promptly tighten or replace them.Maintain external cleanliness of 9907-1200 to prevent dust and dirt accumulation from affecting its heat dissipation and performance.It is recommended to use WOODWARD Service Tool software to regularly check and calibrate WOODWARD 9907-1200 to ensure its control accuracy and dynamic response.Any maintenance work should be carried out by professionally trained personnel and follow WOODWARD’s maintenance manual.

9907-1200 WOODWARD

Product Guarantee

WOODWARD provides standard quality assurance for its produced WOODWARD 9907-1200 CPC-II current pressure converter.