Introduction to the Core Functions and Technical Characteristics of Woodward 8290-191 Load Digital Controller,Based on Public Technical Documents

1.Core functions

Speed Control:Designed specifically for mechanically driven steam turbines,it supports rigorous speed control,can accept 4-20mA remote speed control signals,and has dual dynamic speed control function,suitable for load adjustment under complex working conditions.

Security protection:Integrated overspeed trip test function,device protection is achieved by monitoring the speed sensor signal,and automatic signal loss detection is blocked during startup to ensure the startup process.

Communication protocol:Supports Modbus®The communication protocol can seamlessly interface with programmable logic controllers(PLCs)or distributed control systems(DCS)to transmit real-time data such as speed,setpoint,alarm and shutdown conditions.

2.Technical characteristics

Control mode:

Single valve control:suitable for steam turbine systems with single valves or single valve gate teeth,achieving load balancing by accurately adjusting valve opening.

Redundant design:Supports 1 or 2 redundant AC/DC valve position feedback signals to enhance system reliability.

Compatibility of actuators:

Positionable proportional or integral servo valve,compatible with WOODWARD 2301,500 series or NetCon controllers,suitable for actuators such as electric hydraulic amplifiers and TG governors.

Installation and maintenance:

Supports multiple bracket installation methods,with high end face compatibility,making it easy to deploy and maintain quickly.

3.Application scenarios

Energy field:Used for load control of steam turbines and gas turbines,especially suitable for scenarios such as generator sets and industrial turbines that require strict stability.

Ships and Machinery:In conjunction with electro-hydraulic converters(such as CPC-II),precise pressure control of valves or servo systems is achieved,improving the response speed and safety of ship power systems.

4.Additional features

Warm up control:When starting up,the main steam valve needs to be partially opened.After the turbine reaches the preset warm-up speed,the controller takes over and achieves fine control of fully opening the valve.

Fault diagnosis:Through real-time data exchange,it supports remote monitoring and fault analysis,reducing downtime.

 

 

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1. For all items, modules, and cards sold by our company, if any quality problems occur during normal use within the warranty period, we will provide free replacements without any excuse or delay.
2. For non-discontinued materials and equipment that are out of the warranty period, we only charge the cost of relevant accessories for quality problems.
3. For discontinued materials and equipment, we provide alternative models and equipment replacement process services.
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7. For any other matters not covered, our company adheres to the attitude of “thoughtful service and full responsibility” and solves problems from the customer’s perspective in a practical way. With a serious and rigorous corporate style, we wholeheartedly serve every customer.

The company mainly imports PLC modules, programmable controllers, servo control systems and DCS spare parts, such as: ABB, AB (Rockwell), GE (General Electric), Bentley, Honeywell, Emerson, Motorola, Invensys, Westinghouse, etc. The company has established close cooperative relations with many world-renowned PLC and DCS product maintenance service providers, and can directly purchase from abroad, providing equipment and spare parts from different countries and manufacturers.

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Professionally provide: PLC programmable control system, distributed control system (DCS), safety instrument system (SIS), ESD system, vibration monitoring system, turbine compressor control system (CCS) and other PLC modules, various industrial control systems, system modules, CPU, IO module, DO module, AI module, DI module, network communication module, Ethernet module, motion controller, analog input module, analog output module, switch input module, switch output module, module redundancy, power supply module, relay output unit, relay input unit, processing unit.

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