WOODWARD 8901-037 BOOSTER SERVOMOTOR SINGLE CYLINDER 8901037

Woodward 8200-1302 505D

Applications

The 505 controller is designed to

operate industrial steam turbines of all

sizes and applications. This steam

turbine controller includes specifically

designed algorithms and logic to start,

stop, control, and protect industrial

steam turbines or turbo-expanders,

driving generators, compressors,

pumps, or industrial fans.

The 505 control’s unique PID structure

makes it ideal for applications where it is

required to control steam plant

parameters like turbine speed, turbine

load, turbine inlet header pressure,

exhaust header pressure, or tie-line

power.

The control’s special PID-to-PID logic allows stable control during normal turbine operation

and bumpless control mode transfers during plant upsets, minimizing process over- or

undershoot conditions. The 505 controller senses turbine speed via passive or active speed

probes and controls the steam turbine through one or two (split-range) actuators connected to

the turbine inlet steam valves.

The 505 controller also includes the following turbine protection functions to ensure that the

turbine or its driven load (compressor, pump, generator) is not operated outside of its

designed limits:

 3 Critical speed avoidance bands

 Overspeed anticipation and shutdown protection

 Configurable under- or over-pressure shutdown logic

 Minimum and maximum speed and load settings

Ethernet and serial communications allow users to easily connect the 505 into the plant or

process control system. All controller inputs, outputs, and statuses can be monitored, and all

start/stop or enable/disable commands can be given through industry standard Modbus® *

TCP or OPC protocols. The 505 uses SNTP (synchronized network time protocol) over

Ethernet to allow users to synchronize the 505’s real-time clock to the plant distributed control

system.

* Modbus is a trademark of Schneider Automation Inc.

Description

The 505 control is packaged in an industrial hardened enclosure designed to be mounted

within a system control panel located in a plant control room or next to the turbine. The

control’s front panel serves as both a programming station and operator control panel (OCP).

This user-friendly front panel allows engineers to access and program the unit to the specific

plant’s requirements, and plant operators to easily start/stop the turbine and enable/disable

any control mode. Password security is used to protect all unit program mode settings. The

controller’s 8.4-inch (21 cm) graphical display allows operators to view actual and setpoint

values from the same screen, simplifying turbine operation.

Turbine interface input and output wiring access is located on the controller’s lower back

panel. Un-pluggable terminal blocks allow for easy system installation, troubleshooting, and

replacement.

 Field-configurable

 Integrated graphical

operator control

panel

 Automatic start

routines

 Integrated first-out

problem indicator

 Trip and Alarm

event recorder

 User-friendly menu

format

 Real-time trend

screens

 Turbine run-time

logs

 Real-time clock

synchronization via

SNTP

 Ethernet

communications

 Same form-fitfunction

as previous

505 versions

 Sulfur-resistant

conformal coating

 Certified for

Hazardous

Locations (lowvoltage

models)

Woodward 03422 p.2

Designed for steam turbine control, the 505 control includes four PID controllers (Speed, Cascade, Aux-1, Aux-2), multiple start-up

routines (manual, semi-auto, automatic, remote control), and multiple protection functions (overspeed, critical speed range, max

power, etc.) which can be configured by a user depending on the specific turbine application’s requirements. Users can configure

the 505’s different PID controllers, start routines, and protection levels themselves without the need for a special control engineer.

Once configured, the 505 performs a configuration check routine to ensure that the programmer did not make any basic

configuration mistakes.

Optionally, users can utilize Woodward’s RemoteView software program with the 505 to function as a remote operator control

panel and/or engineering station. Once loaded onto a remote computer or touch panel, this software program allows the computer

or touch panel to perform all of the 505 front panel display functions (monitor, operate, tune, and configure). Password-based login

level security allows users to manage which functions they want the remote panel user to have. Refer to product specification

03424 for more information on RemoteView’s capabilities.