Tag: Woodward

WOODWARD 9907-167 Digital Governor
The Woodward 9907-167 Digital Governor is an advanced industrial control system designed for precise speed and load regulation in heavy-duty applications, ensuring optimal performance and reliability across various sectors.
Dimensions (LxHxD):14 inches x 11 inches x 4 inches

Enclosure Type:NEMA 4 rated

Program Upload/Download Capability:Yes

Input Voltage:18-32 VDC

Keypad/Display:30 Analog Keys with 2 Rows of 12 Characters

Manufacturer:Woodward

Operating Temperature Range:-13°C to +149°F

Output Type:2 Actuator Outputs, 8 Relay Outputs, 6 Programmable Current Outputs

Resolution:High

Standards Compliance:Meets US MIL-STD-810C, method 516.2- 1, procedure 1B

Weight Before Shipping:<10 lbs.

9907-167

Engineered for durability and precision, the Woodward 9907-167 Digital Governor integrates advanced technology to optimize the operational capabilities of industrial machinery. Its compact design ensures seamless integration into existing systems without compromising on functionality.

9907-167

With a comprehensive suite of features, including program upload/download capability and a robust input voltage range of 18–32 Vdc, this governor ensures flexibility and reliability across different industrial environments. The inclusion of 30 Analog Keys on its keypad offers intuitive control, making it accessible to a wide range of users.

Designed to withstand harsh conditions, the unit is equipped with shock protection standards meeting US MIL-STD-810C, ensuring longevity and reliability even under extreme circumstances. This makes it ideal for use in industries where equipment must operate reliably in challenging environments.

The programmable outputs allow for customized control over actuators and relays, providing users with the ability to tailor the system to meet specific operational needs. The 6 Programmable Current Outputs further enhance its versatility, supporting a variety of applications within the industrial sector.

Weighing less than 10lbs before shipping, the Woodward 9907-167 Digital Governor is lightweight yet robust, facilitating easy installation and maintenance. Its compact size and efficient design make it an attractive choice for space-constrained industrial settings, aiming to streamline operations and reduce costs

MicroNet HD Combo Modules

5466‐253 and 5466‐316

The subject modules provide a combination of eight Analog Inputs, four Analog Outputs, four Speed Inputs,

and two Proportional Actuator Outputs. These older modules have significant component obsolescence

issues and will be replaced by improved Combo Modules based on Woodward’s modern “Smart-Plus”

architecture.

The new modules provide four analog outputs (which can be used to drive 4-20mA proportional actuators),

twelve analog inputs and four speed inputs.  The new modules provide many performance improvements:

 Enhanced speed sensing, including improved resolution, throughput time, noise filtering and

channel to channel isolation. There are two versions available – standard speed accuracy

(meets/exceeds HDCombo accuracy), and high speed accuracy, which is primarily intended for

Gas Turbine applications but can be used for Steam as well when higher accuracy is desired.

 Acceleration sensing improvements – improved resolution, accuracy and noise filtering.

 Analog input channel improvements – improved resolution, accuracy, throughput time, channel to

channel and channel to ground isolation.

 Actuator/analog output improvements –improved resolution, accuracy, open wire detection,

isolation and noise filtering.

The new HD Combo modules have GAP-selectable Speed and Analog Input types, so either the standard

or high-accuracy version can be used in both MicroNet Plus(1) and 5200-based TMR(2) systems. See the

table below for FTM application.

5466‐253

Notes:

1. MicroNet Plus systems utilizing the new module will require Coder MicroNet 1.0 or later.

2. MicroNet TMR systems utilizing the new module will require Coder Version 5.08 or later.

3. Customers with 040 or Pentium/NT CPUs should continue to utilize 5466-253 and 5466-316 for

spare parts and system expansions.

Affected Units

Existing

P/N

5466‐253

Description Existing FTM Replaced By New FTM

5466-253 TMR High Density Combo I/O – 4 MPU’s,

(8) 0-5 Volt Inputs, 4 4-20 mA Outputs, 2

Prop. Actuator Outputs

2 x 5501-365 5466-1115 (Standard Accuracy)

or

5466-1105 (High Accuracy)

1 x 5501-372

1 x 5501-502

5466-316 Simplex High Density Combo I/O – 4

MPU’s, 8 4-20 mA Inputs, 4 4-20 mA

Outputs, 2 Prop. Actuator Outputs

5501-371 5466-1115 (Standard Accuracy)

or

5466-1105 (High Accuracy)

1 x 5437-523

1 x 5501-376

Corrective Action

The replacement modules require GAP updates as noted above and utilize different FTMs and cables. For

this reason, the old modules will continue to be available for users needing spare parts and or system

expansion.

Because the existing HD Combo modules and matching FTMs will remain available, Woodward is not

offering last time buy opportunities.

Customer Action

Please switch new system orders to the updated HD Combo module as soon as reasonably possible.

This helps Woodward preserve obsolete part inventory so that we can continue to offer the 5466-253

and 5466-316 modules as long as possible for spare parts or to expand existing systems.

Load Sharing Module

0.5–4.5 Vdc Output

9907-252

The Woodward Load Sharing Module is made for use with engines equipped with speed controls that

accept a 0–5 Vdc speed setting. The Load Sharing Module allows use of Woodward power generation

accessories and allows load sharing between engines equipped with speed controls that are not

manufactured by Woodward and engines controlled with Woodward electronic controls, or controls using

other Woodward load sharing modules.

Description

The Load Sharing Module provides isochronous and droop load-sharing capability for engines in

generator set applications. Additional equipment in the control system can include the Woodward SPM-A

Synchronizer, Import/Export Control, Automatic Generator Loading Control, and Automatic Power

Transfer and Loading Control.

Introduction

This section contains general installation instructions for the Load Sharing Module. Environmental

precautions and location considerations are included to determine the best location for the Load Sharing

Module. Additional information includes unpacking instructions, electrical connections, and an installation

check-out procedure.

Unpacking

Before handling the Load Sharing Module, read page ii, Electrostatic Discharge Awareness. Be careful

when unpacking the Load Sharing Module. Check the unit for signs of damage such as bent or dented

panels, scratches, and loose or broken parts. Notify the shipper of any damage.

Location Considerations

Consider these requirements when selecting the mounting location:

• Adequate ventilation for cooling

• Space for servicing and repair

• Protection from direct exposure to water or to a condensation-prone environment

• Protection from high-voltage or high-current devices, or devices which produce

electromagnetic interference

• Protection from excessive vibration

• An ambient operating temperature range of –40 to +70 °C (–40 to +158 °F)

Do not mount the Load Sharing Module on the engine.

Figure 1-2 is an outline drawing of the Load Sharing Module. Install the unit as close as practical to the

electronic engine control, but not on the engine itself. It may be installed in any position.

To maintain compliance with CE and UKCA marking requirements, the European Union Low Voltage

Directive requires that the Load Sharing Module (LSM) be mounted in an IP43 enclosure as defined in

EN60529. Access to the Load Sharing Module must be restricted to qualified personnel.

General Wiring Requirements

The circled ground symbol identifies the Protective Earth Terminal. This terminal must be

connected directly to protective earth using a grounding conductor at least as large as those

used on terminals 1 through 9. The insulation of the grounding conductor must be of green and

yellow color.

This symbol identifies functional or EMC earth. This terminal is to be used for cable shield

connections only. It is not to be used as a protective earth terminal.

External wiring connections and shielding requirements for a typical installation are shown in the plant

wiring diagram, Figure 1-4. These wiring connections and shielding requirements are explained in more

detail in this chapter.

9907-252

To maintain compliance with CE and UKCA marking requirements, the Low Voltage Directive requires

that the Load Sharing Module must only be connected to Class III equipment.

Wiring for the Load Sharing Module must be suitable for at least 90 °C (194 °F) and also be suitable for

the maximum installed operating temperature.

The Load Sharing Module must be permanently connected and employ fuses or circuit breakers in each

of the PT lines to limit current to the LSM PT inputs to no more than 5 A. In addition, a 2 A fast-acting fuse

or circuit breaker must be provided in the 24 Vdc power supply line.

All terminal block screws must be tightened to 0.56 to 0.79 N·m (5.0 to 7.0 lb-in).

To maintain compliance with CE and UKCA marking requirements, the EMC Directive requires that all

shields be connected to the terminals provided per the plant wiring diagram, Figure 1-4.

Power Requirements

9907-252

The Load Sharing Module is powered from a 24 Vdc source. The 24 Vdc source must be a minimum of

18 Vdc and a maximum of 32 Vdc continuous. If a battery is used for operating power, an alternator or

other battery charging device is necessary to maintain a stable supply voltage.

Shielded Wiring

All shielded cable must be twisted conductors with either a foil or braided shield. Do not attempt to tin (put

solder on) the braided shield. All signal lines should be shielded to prevent picking up stray signals from

adjacent equipment. Connect the shields to the terminals indicated in the plant wiring diagram. Wire

exposed beyond the shield must be as short as possible.

The other end of the shields must be left open and insulated from any other conductor. Do not run

shielded signal wires with other wires carrying large currents. See Application Note 50532. EMI Control

for Electronic Governing Systems, for more information.

Where shielded cable is required, cut the cable to the desired length and prepare the cable as instructed

below and shown in Figure 2-1.

Introduction

This chapter describes the operation of the Load Sharing Module and its internal circuits. Figure 1-3 is a

block diagram of the circuits in the module.

The Load Sharing Module senses the power output of a generator and provides a 0.5–4.5 Vdc signal to

the speed control to adjust the power output of the engine-generator set to match the reference power

level. The Load Sharing Module can also produce a droop condition (instead of isochronous load

sharing), making it possible to connect the generator set in parallel with either a generator set which is

running isochronously, or with an infinite bus.

Power Supply

The internal power supply generates a regulated dc voltage for the operation of the circuits in the Load

Sharing Module. The power supply gets its power from the engine 24 Vdc power source. To prevent

damage to the unit that uses an alternator or battery charging device, make sure the charging device is

turned off before disconnecting or connecting the 24 Vdc supply to the unit.

Power Sensor

Generator load is measured by the power-sensor circuit of the Load Sharing Module. The power-sensor

circuit senses current amplitude and produces a load signal proportional to the current amplitude times

the power factor. The potential input comes from potential transformers (PTs) and the current input comes

from the current transformers (CTs). The circuit uses these two inputs to generate a load signal which is

then filtered and sent to the controller circuit. The load signal voltage of each generator set will be

proportional to the percentage of rated load on the generator set.

Ammeters and voltmeters may be driven with the same PT and CT wires.

Load Comparator Circuit

In the load comparator circuit, the load signal voltage is balanced with the other generator sets in the system via

the load sharing lines. The comparator circuit of each Load Sharing Module includes a load gain potentiometer to

adjust each generator set’s load signal so that the load signal voltage of each is the same at full load. This

compensates for varying CT ratios or different generator set sizes. The load sharing voltage will be one-half the

measured voltage of the load signal test point.

Speed Trim Circuit

A speed-trim potentiometer can be added to the Load Sharing Module to permit remote adjustment of the

load or frequency of the generator. The speed trim is normally used for manual synchronization of a

generator set with an existing bus or to change the load demand when in droop mode.

Isochronous Load Sharing

Each comparator circuit compares the load signal voltage for its generator set to two times the voltage on

the load sharing lines and produces an error voltage proportional to the difference. This error voltage is

used to generate a pulse width modulated signal which is output to the speed control. This output biases

the speed loop of the speed control until the load signal voltage is equal to that of other generators on the

load sharing lines.

Droop Operation

In droop operation, a portion of the load signal voltage is fed to the controller circuit. This voltage is used

by the comparator circuit to reduce the control output by a percentage determined by the DROOP

potentiometer. The output is reduced, and the speed control reduces engine power output according to

the desired droop percentage.

When a generator set using the Load Sharing Module is paralleled in droop with other generator sets, the

common load signal on the paralleling lines is not used. The frequency of the generator set will therefore

vary with load, so it must be determined by a different means. In an isolated system with two or more

generator sets paralleled, if isochronous speed control is required, one of the generator sets must be

running in the isochronous (constant speed) mode. This generator set maintains the frequency of the

system. If a generator set is in droop and is paralleled with an infinite bus, the bus determines and

maintains the frequency. The DROOP percentage and the speed setting on the engine speed control

determine the amount of the load that is carried by the generator, when running in droop.

Auxiliary Equipment

The Woodward SPM-A synchronizer functions by biasing the output of the Load Sharing Module. All other

Woodward auxiliary generating control equipment functions by biasing the voltage on the load-sharing

lines.

0.5–4.5 Vdc Output

The Load Sharing Module output to the engine control is a 0.5 to 4.5 Vdc signal. The output nominally is

at 2.5 Vdc when the difference between the generator load and the signal on the load sharing lines is

zero.

The speed control should be set up in Variable Speed Governor mode to produce a ±10% variance in the

engine speed with a ±2.0 Vdc input, as shown in this example:

If 1800 rpm is equivalent to 60 Hz for a ±5.0% variance on the speed of the engine, the control would be

set up such that 0.5 Vdc output corresponds to 1710 rpm (VSG MIN

9907-164

Woodward Unit 9907-164 from 505 Digital microprocessor-based Controllers for Steam Turbines with Single or Split-Range Actuators.

9907-164 Technical Specifications

Model Number    9907-164

Dimensions    14W x 11H x 4D (Inches)

Display Type    Two line x 24 characters

Enclosure Type    IEC 60529. IP 56

Features    Overspeed Test Buttons

Humidity Standards    20 and 55 °C at 95% for 48hrs

Input Voltage    +24 Vdc at 1 A

Keypad/Display    30 Multi-function Keypad

Operating Temperature    –4 to +140 F

Slot Type    RS-232/RS-422 with Modbus Protocol

Software Version    505View or OpView™

Storage Temperature    -40 to +185 F

Weight    9.11 lbs

9907-164

Shipping Dimensions    20x16x16 inAbout the 9907-164

The device listed here is the 9907-164 model, a part of the 505 and 505E Microprocessor-based governor control units. These control modules were designed specifically to operate steam turbines, as well as turbogenerators and turboexpander modules. The 505/505E series was developed, produced, and manufactured originally by Woodward Inc. Woodward is the oldest industrial manufacturer in America, founded in 1870. and still, today remains one of the leading industrial companies in the market.

9907-164

The 9907-164 unit is designed to control the steam turbine by operating a single extraction and/or the admission for the turbine. It utilizes the turbine’s split-stage actuators, either one or both of them, to drive the inlet valves for steam.

This unit, like any of the 505 governor modules, is able to be configured in the field by the on-site operators. The menu-driven software is controlled and altered by the operator control panel integrated onto the front-facing side of the unit. The panel has a display of two lines of text, 24 characters per line.

The 9907-164 is outfitted with a series of discrete and analog inputs: 16 contact inputs (4 of them dedicated, 12 of them programmable), and then 6 programmable current inputs, at 4 to 20 mA. The standard features included into the 9907-164’s capabilities are the critical speed avoidance, valve limiters, the auto start sequence, and the first-out indicator for shutdowns.

This model is a very crucial general-purpose analog input/output module in the Woodward MicroNet and NetCon control systems.

1. Product Description

The Woodward 5464-414 is a standard analog I/O module. It is specifically designed for the MicroNet digital control system and is used for monitoring and controlling prime movers (such as gas turbines, steam turbines, and large engines).

This module, through its high-density channel design, can simultaneously handle multiple analog signals and serves as the core interface between the system and on-site sensors and actuators.

2. Technical Data Sheet

Model: 5464-414

Series: MicroNet / NetCon 500

Input Channels (Inputs): * Usually consist of 8 analog inputs.

Supports 4–20 mA current signal or 0–5 V / 0–10 V voltage signal.

Output Channels (Outputs): * Usually consists of 4 analog outputs.

Mainly used for 4-20 mA proportional control.

Accuracy: 0.1% of full scale (typical value).

Isolation: The module has current isolation between the channel and the bus, preventing external electromagnetic interference (EMI) from affecting the control system motherboard.

Operating Temperature: -40 °C to +70 °C.

Power Consumption: Approximately 5 – 10 W.

5464-414

3. Related Models / Components

The model 3464-414 is usually used in conjunction with the following Woodward hardware:

5466-316 / 5466-1035: MicroNet CPU main processing module.

5464-834: Analog Input Terminal Block (FTM – Field Terminal Module).

9907-014: Special shielded cable for connecting the module to the terminal block.

5464-544: Discrete (Discrete) I/O module.

5464-414

4. Application Cases (Application Examples)

Gas Turbine Control: This is used to collect exhaust temperature and fuel pressure signals, and to output signals to control the fuel regulating valve.

Steam Turbine Governing: Monitors the rotational speed of the steam turbine (in conjunction with the speed module) and the inlet steam pressure, and drives the servo actuator.

Compressor Anti-Surge Control: Real-time collection of pressure and flow transmitter data to ensure the compressor operates within a safe range.

Grid connection of the generator set: Processing power measurement signals and voltage regulation instructions.

5. Product Advantages and Features

High Reliability: Specifically designed for industrial mission-critical applications, with an extremely long Mean Time Between Failures (MTBF).

High-density design: Integrating input and output functions within a single slot, saving space in the control cabinet.

Hot-swappable support: In a redundant system configuration, it is supported to replace modules while the system is powered on without affecting its operation.

Powerful self-diagnosis function: The module can automatically detect loop breakage, short circuit or hardware faults, and report the error code to the main controller.

Resistant to environmental interference: Conformal coating can operate stably in high humidity and high salt spray environments.

6. Other Models in the Series

The Woodward MicroNet I/O series also includes:

5464-211: Special RTD (Resistance Temperature Detector) input module.

5464-643: Specialized thermocouple input module.

5464-658: High-speed counter/velocity sensor module.

5466-409: Discrete I/O Combination Module.

723PLUS Digital Control

9906-619. 9906-620. 9906-700

This manual describes the Woodward 723PLUS Digital Control hardware,

9906-619 (low voltage), 9906-620 (high voltage), and 9906-700 (modified

actuator filtering, low voltage).

Application

The 723PLUS Digital Control can be programmed to suit applications requiring

two magnetic pickups (MPUs) or proximity switches (e.g. for torsional filtering) as

the hardware includes two speed inputs. It also includes four analog inputs, three

analog outputs, eight discrete inputs and three discrete outputs, all of which can

be programmed to satisfy the application. The control can be used in load

sharing systems as it contains circuitry and connections to support this.

The two LON®* channels can be used to support Woodward LonTalk®* or

LinkNet® input/output nodes control functions.

*—LON and LonTalk are trademarks of Echelon Corporation.

The 723PLUS control (Figure 1-1) consists of a single printed circuit board in a

sheet-metal chassis. Connections are via three terminal strips and three 9-pin

subminiature D connectors.

723PLUS

Control Options

The 723PLUS control requires the following power supply input voltages, with 40

watts as the nominal power consumption at rated voltage:

18–40 Vdc (24 or 32 Vdc nominal)

90–150 Vdc (125 Vdc nominal)

Discrete input voltages provide on/off command signals to the electronic control.

Each discrete input requires 10 mA at its 24 Vdc nominal voltage rating (for 24

volt switching logic).

Other control options are:

proximity switch input for speed signal frequencies below 100 Hz (see

NOTE)

0–1 mA for meter drivers

tandem actuator outputs

dual actuator outputs (0–200 mA)

The control may be used with either proximity switches (see NOTE) or magnetic

pickups. The minimum frequency for steady state speed control is 30 Hz. For

more information see Control Specifications (inside back cover).

723PLUS Digital Control Accessories

Hand Held Programmer (Figure 1-2), part number 9907-205. can be used

for adjusting the 723PLUS control. It plugs into serial port J1 of the control.

This part is EU Directive compliant.

SPM-A Synchronizer, for synchronizing the generator phase to that of the

power bus. The synchronizer generates a close generator breaker signal to

parallel the generator with the power bus.

Power Output Sensor, for load sharing or droop operation in mechanical

load applications.

Real Power Sensor, for load sharing or droop-parallel generator

applications.

Digital Synchronizer and Load Control (DSLC™) for generator load

management.

Rack Position Sensor, for mechanical load sharing.

Load Pulse Unit, for improved system load transient response.

LinkNet nodes for additional input/output control functions.

Scope

This chapter contains general installation instructions for the 723PLUS control.

Power requirements, environmental precautions, and location considerations are

included to help you determine the best location for the control. Additional

information includes unpacking instructions, electrical connections, and

installation checkout procedures.

Unpacking

Before handling the control, read page v, Electrostatic Discharge Awareness. Be

careful when unpacking the electronic control. Check the control for signs of

damage such as bent panels, scratches, and loose or broken parts. If any

damage is found, immediately notify the shipper.

Power Requirements

The high-voltage versions of the 723PLUS Digital Speed Control require a

voltage source of 90 to 150 Vdc. The low-voltage versions require a voltage

source of 18 to 40 Vdc

Location Considerations

Consider these requirements when selecting the mounting location:

adequate ventilation for cooling

space for servicing and repair

protection from direct exposure to water or to a condensation-prone

environment

protection from high-voltage or high-current devices, or devices which

produce electromagnetic interference in excess of levels defined in

EN50082–2

avoidance of vibration

selection of a location that will provide an operating temperature range of

40 to +70 °C (–40 to +158 °F)

Specific Marine Installation Requirements

Marine Type approval requirements change over time. In recent years, there has

been at least the addition of a stricter emission limit. A 156–165 MHz band notch

has been added and referred to here as the “Marine Notch”. To address the

Marine Notch, additional installation limitations are required for new installations

under the updated Marine Type approvals.

All wiring, except for the last 12 inches (305 mm) adjacent to the control

connection terminals must be inside a metal conduit, metal cable armoring,

enclosed metal cable way, or similar metal acting as a secondary shield. The

metal acting as the secondary shield must be grounded to the same reference

ground as the control chassis. In some cases, the chassis reference ground is

also referred to as Protective Earth (PE). All wiring must also follow the wiring

and shielding requirements given in the specific, separate software manual.

The control must be mounted on a metal mounting plate that is grounded to the

same reference ground potential as the control’s chassis.

Alternatively, if the installation is limited to areas of the ship where at least 6 dB

attenuation of the RF signals from the control can be guaranteed, no additional

special measures are needed. The signals in the 156–165 MHz range must be

attenuated by 6 dB before they reach the receiver antenna or receiver

(interference point), and the control must be >3 m away from the antenna or

receiver. This is a specific installation dependency, and some examples may

include:

 A grounded, metal, IP rated cabinet with all cabling staying inside it for more

than 2 m length, with any shield terminations at the cabinet exit/entry point

and all unshielded cable routed directly against the metal cabinet.

 A below-deck metal engine room where none of the cabling, including power,

leaves the engine room.

If using a specific installation location or method as a means to meet the Marine

Notch requirements, instead of a secondary metal shield for cabling, consult the

ship builder. Acceptability of the installation for obtaining 6 dB of RF attenuation

in the 156–165 MHz range must be provided by the ship builder. Woodward will

not know the ship installation application or requirements to provide guidance.

Internal Jumpers

The 723PLUS control has ten, two-position internal jumpers (JPR1 through

JPR20) located on the top of the printed circuit board. If it is necessary to change

any jumper to match your control requirements, and this suits the nature of the

software, be sure to read page v, Electrostatic Discharge Awareness.

Remove power and all inputs. Wait 45 seconds, then remove cover. With your

fingers or a small pair of tweezers, carefully remove the appropriate jumper and

replace it securely over the proper two connectors (see Figure 2-1).

Notes for Figure 2-2

723PLUS

Shielded wires are twisted pairs, with shield grounded at one end only. When

mounting control to bulkhead, use the grounding stud and hardware supplied with

the chassis to ensure proper grounding.

Shields must not be grounded at any external point unless otherwise noted.

All shields must be carried continuously through all terminal blocks and must not be

tied to other shields except at the common ground point. Tie all shields together at

ground stud located near connector J1.

Remove jumper for voltage input.

Remove jumper if using external discrete input power.

Discrete inputs are isolated from other circuits and intended to be powered by

TB1-39 (+24) leaving the jumper in place. Input current is nominally 10 mA input into

2210 Ω.

7. Unless otherwise specified:

A. Relays shown de-energized

B. Relays energize for function

C. Relay contact ratings for minimum 100 000 operations:

Resistive— 2.0 A at 28 Vdc

0.1 A at 115 Vac 50 to 400 Hz

Inductive— 0.75 A at 28 Vdc 0.2 Henry

0.1 A at 28 Vdc lamp

Analog output signals to other systems must be isolated from ground either by

design or employment of isolation amplifiers.

Analog input signals to other systems must be isolated from ground either by design

or employment of isolation amplifiers.

10. Factory set for MPU input.

11. Factory set for 20–160 mA output.

12. Factory set for 4–20 mA output.

13. Internal power supply provides dc isolation between the power source and all other

inputs and outputs.

14. Communication port J1 can be used with the Woodward ST2000 Hand Held

Programmer or PC Interface using Watch Window/Servlink software.

15. Communication port J2 or J3 can be configured as an RS-232. RS-422. or RS-485

serial interface. Port configuration can be done in the application software only. For

the pin assignment of J2 and J3. see later in this chapter.

16. This analog output may connect to a metering/controlling device. The shield should

be continuous between all connected devices with a single shield termination point to

ground.

17. Use twisted pair shielded wires only.

18. Remove jumper if used with the gas engine I/O node.

Termination is accomplished using a three-resistor voltage divider between a

positive voltage and ground. The impedance of the resistor network should be

equal to the characteristic impedance of the cable. This is usually about 100 to

120 ohms. The purpose is to maintain a voltage level between the two differential

lines so that the receiver will be in a stable condition. The differential voltage can

range between 0.2 and 6 volts; but the maximum voltage between either receiver

input and circuit ground must be less than 10 volts. There is one termination

resistor network for each port located on the 723PLUS board. Connection to this

resistor network is made through the 9-pin connectors on pins 6 and 9. See

Figures 2-5 through 2-8 for termination and cable connection examples.

Due to the variety of installations, plus system and component tolerances, the

723PLUS control must be tuned to each system for optimum performance.

This chapter contains information on how to enter control set points through the

control’s menu system using the Hand Held Programmer. If you have access to

the Watch Window software tool and Servlink software, you can set up and tune

the 723PLUS control from a PC (personal computer) using the instructions in

Chapter 5 of this manual.

Hand Held Programmer and Menus

The Hand Held Programmer is a hand-held computer terminal that gets its power

from the 723PLUS control. The terminal connects to the RS-422 communication

serial port on the control (terminal J1). To connect the terminal, slightly loosen

the right-hand screw in the cover over J1 and rotate the cover clockwise to

expose the 9-pin connector. Then firmly seat the connector on the terminal into

J1.

The programmer does a power-up self-test whenever it is plugged into the

control. When the self-test is complete, the screen will display two lines of

information. This is information relating to the application. Pressing the ID key will

change the display to show the part number of the software and version letter.

The programmer screen is a four-line, backlit LCD display. The display permits

you to look at two separate functions or menu items at the same time. Use the

UP/DOWN ARROW key to toggle between the two displayed items. The BKSP

and SPACE keys will scroll through the display to show the remainder of a

prompt if it is longer than the display screen’s 18 characters.

The 723PLUS has two sets of menus—the Service menus and the Configure

menus. The Service menus allow easy access and tuning while the engine is

running. The Configure menus may be entered only if the I/O is shutdown (hence

the engine stopped).

Configure Menus

To access the Configure menus, the engine must be shut down. Press the  key.

The display will show, “To select configure, press enter”. Press the ENTER key

and the display will show, “To shutdown I/O, press enter”. Press the ENTER key

and this will allow you into the Configure menus.

To move between the menus use the LEFT ARROW and RIGHT ARROW keys.

To move through the set points within a menu, use the UP ARROW and DOWN

ARROW keys. Once within a menu, to return to the menu header, press the ESC

key.

To leave the Configure menus press the ESC key. The set points will be

automatically saved when leaving Configure.

Service Menus

To access the Service menus press the DOWN ARROW key. To move between

menus, and to move through set points within menus follow the instructions as

for the Configure menus. Also to return to return to the menu header, or to leave

Service, follow the Configure instructions.

723PLUS

Adjusting Set Points

To adjust a set point, use the TURTLE UP or the RABBIT UP keys to increase

the value, and the TURTLE or RABBIT DOWN keys to decrease the value. The

RABBIT UP and RABBIT DOWN keys will make the rate of change faster than

the TURTLE UP and TURTLE DOWN keys. This is useful during initial setup

where a value may need to be changed significantly. Where necessary, to select

TRUE, use either the TURTLE UP or the RABBIT UP keys, and to select FALSE,

use the TURTLE DOWN or RABBIT DOWN keys.

Use the + or – keys to change integer values in the application software.

To obtain an exact value, press the = key. Key in the required figure and press

ENTER.

view the variables for your 723PLUS control on a PC (personal computer). These

instructions are meant to be introductory only. Full on-line help is available in

each application. It is assumed that you already have Servlink and Watch

Window installed. The default installation location can be found by clicking the

START icon (Microsoft Windows 95 or later) on the main menu bar and then

clicking the PROGRAMS menu item. Look for an icon called WOODWARD

WATCH WINDOW.

Make sure that all other programs that may access your computer

communications port are shut down.

Get the right cable to talk from your PC to the control (5416-614 will work for

J2 and J3. 5416-870 for J1).

Start the Servlink server and open a new file. Select the proper COM port for

your PC, verify that POINT TO POINT communications mode is selected,

and verify that the baud rate matches the baud rate of the 723PLUS. The

default baud rate is 19 200. See the on-line help file if you have been

changing the port settings of your control.

Select OK. If everything is working right, you should see an animated picture

of a string of “1”s and “0”s flying from the control to the PC on your screen.

You now have a network definition file whose default name is NET1. You

should save this file as “your filename.NET” (use FILE/SAVE AS). Link this

name to your control part number, as it will work only with that application.

For instance, if the upper level control number is 9907-031. you could save

the file as 9907031.NET. DO NOT DISCONNECT THE SERVER.

In the Servlink window you will now have another dialog window titled “your

filename.net”. In this window you will see a ballhead icon and a control

identifier name. Unless you have given the control a serial number (or name)

with the SLSN.EXE program, this name will display as “”.

Start the Watch Window application. When Watch Window executes, you will

have a screen displaying three windows entitled Watch Window, Explorer,

and Inspector.

The Explorer window will have two groups displayed, SERVICE and

CONFIGURE. Double clicking on either of these will expand them to show

groups of values. Explorer is used only to locate a tunable or monitor value.

In order to change a value or monitor a value, you must drag and drop a

value from the Explorer window into the Inspector window.

Once a value is displayed in the Inspector, you can see several blocks of

information. The most important blocks for a tunable value are the FIELD and

VALUE blocks. The FIELD block is used to identify a particular value, and the

VALUE block displays the current value of a variable. There are two types of

values available in Watch Window. One is a monitor value, which is marked

in the INSPECTOR window with a pair of glasses. This means it may only be

looked at. The other value is a read/write value, which is marked with a

pencil. The read/write type may be modified using the up and down arrows in

the value block.

Downloading to the 723PLUS

NOTE that this is the only way to download to a 723PLUS, and it will not work on

a regular 723.

Make sure that all other programs that may access your computer’s

communication port are shut down.

Get the right cable to talk from your PC to the control J1 port (5416-870).

Start the Servlink server and open a new file. From the dialog window, select

the proper COM port for your PC, select POINT TO POINT communications

mode, and set the baud rate to 19200.

Select OK. If everything is working right, you should see an animated picture

of a string of “1”s and “0”s flying from the control to the PC on your screen.

You now have a network definition file whose default name is NET1. You

should save this file. Link this name to your control part number as it will only

work with that application. For instance if the upper level control number is

9907-031. you could save the file as 9907031.NET. DO NOT DISCONNECT

THE SERVER.

In the Servlink window you will now have another dialog window titled “your

filename.net”. In this window you will see a ballhead icon and a control

identifier name. Unless you have given the control a serial number (or name)

with the SLSN.EXE program, this name will display as “”.

Start the Watch Window program. Under the title bar in the Explorer window

you will find a tab with your network file and the control ID displayed. Right

click this tab to display the pop-up menu, and select LOAD APPLICATION.

This will close the Inspector window and open a new window where you will

enter the name of the file you want to download. Once the filename is

correct, click on the OPEN button. A Warning screen will ask you to make

sure the engine is shut down before downloading. Downloading will proceed

automatically once your accept the message to shut down the engine.

Transferring Tunable Values Between 723PLUS

Controls

723PLUS

Note that this will not work with regular 723 controls.

Make sure that all other programs that may access your computer’s

communication port are shut down.

Get the right cable to talk from your PC to the control (5416-870 for J1. 5415-

614 for J2 or J3).

Start the Servlink server and open a new file. From the dialog window, select

the proper COM port for your PC, select POINT TO POINT communications

mode, and set the baud rate to 19200.

Select OK. If everything is working right, you should see an animated picture

of a string of “1”s and “0”s flying from the control to the PC on your screen.

You now have a network definition file whose default name is NET1. You

should save this file. Link this name to your control part number as it will only

work with that application. For instance if the upper level control number is

9907-031. you could save the file as 9907031.NET. DO NOT DISCONNECT

THE SERVER.

In the Servlink window you will now have another dialog window titled “your

filename.net”. In this window you will see a ballhead icon and a control

identifier name. Unless you have given the control a serial number (or name)

with the SLSN.EXE program, this name will display as “”.

Start the Watch Window program. Under the title bar in the Explorer window

you will find a tab with your network file and the control id displayed. Right

click this tab to display the pop-up menu, and select CONFIGURATION. If

you want to take the configuration from a control, select SAVE TO FILE. If

you want to download a new configuration to a control with an existing

application, then select LOAD FROM FILE.

If you select SAVE TO FILE, you will have to provide the name of a file

where you want to save the configuration. If your control has a part number

of 9907-031 then you might want to call this file 9907031.cfg. Make the name

meaningful so you can find it easily the next time you need it.

If you select LOAD FROM FILE you will get a confirmation warning telling

you that the unit will be shut down. If you answer yes then you will be asked

for the name of the configuration file that you want to download

Turbine Control Parameters

The 505E interfaces with two control valves (HP & LP) to control two parameters

and limit an additional parameter, if desired. These two controlled parameters are

typically speed (or load) and extraction/admission pressure (or flow), however,

the 505E could be utilized to control or limit: turbine inlet pressure or flow,

exhaust (back) pressure or flow, first stage pressure, generator power output,

plant import and/or export levels, compressor inlet or discharge pressure or flow,

unit/plant frequency, process temperature, or any other turbine related process

parameter. Refer to Volume 2 for details on applications.

Communications

The 505E can communicate directly with plant Distributed Control Systems

and/or CRT based operator control panels, through two Modbus® *

communication ports. These ports support RS-232. RS-422. or RS-485

communications using ASCII or RTU MODBUS transmission protocols.

Communications between the 505E and a plant DCS can also be performed

through hardwired connections. Since all 505E PID setpoints can be controlled

through analog input signals, interface resolution and control is not sacrificed.

*—Modbus is a trademark of Schneider Automation Inc.

Additional Features

The 505E also provides the following features: First-Out Trip Indication (5 total

trip inputs), Critical Speed Avoidance (2 speed bands), Auto Start Sequence (hot

& cold starts), Dual Speed/Load Dynamics, Zero Speed Detection, Peak Speed

Indication for Overspeed trip, and Isochronous Loadsharing between units.

Using the 505E

The 505E control has two normal operating modes, the Program Mode and the

Run Mode. The Program Mode is used to select the options needed to configure

the control to your specific turbine application. Once the control has been

configured, the Program Mode is typically never again used, unless turbine

options or operation changes. Once configured, the Run Mode is used to operate

the turbine from start-up through shutdown. In Addition to the Program and Run

modes, there is a Service Mode which can be used to enhance system operation

while the unit is running. Refer to Volume 2 for information on the Service Mode.

505E Inputs and Outputs

Control Inputs

Two speed inputs which are jumper configurable for MPU (magnetic pickup units)

inputs or proximity probes.

Six analog inputs are available.  One is dedicated as the extraction/admission

input.  The remaining five are configurable.  The sixth analog input has isolation

circuitry and should be used for a self-powered signal that is not isolated.

Sixteen contact inputs are available. Four are dedicated for shutdown, reset,

raise speed setpoint, and lower speed setpoint. Another two contact inputs must

be dedicated for generator breaker and utility tie breaker if the control is used in a

generator application. Ten additional contact inputs can be configured. If the unit

is not used in a generator application, then twelve additional contact inputs can

be configured.

Four function keys on the front panel of the control. F1 and F2 are dedicated to

alarm and overspeed test, respectively. F3 and F4 can be used to enable or

disable various functions of the control.

85018V1

Control Outputs

Two actuator outputs with linearization curves for the HP and the LP valve

outputs.

Six 4–20 mA outputs, for meters or other readouts.

Eight Form-C relay contact outputs, six that are configurable. The two dedicated

relay outputs are for shutdown and alarm indication.

Control Communications

Two Modbus ports, to be used as control interfaces. The protocol can be either

ASCII or RTU and the communications can be RS-232. RS-422. or RS-485.

One computer (PC) port to be used for program configuration storage.

An overview of the 505E functions is shown in Figure 1-1. Use this block diagram

to match the control features to the site-specific application required.

The 505E Digital Governor is designed to control extraction, extraction/

admission, or admission steam turbines. The difference between these turbines

is the capability of the turbine to allow low pressure steam, which is at a lower

pressure than the inlet, to enter and/or exit the turbine. An extraction turbine

allows the lower pressure (extraction) steam to exit the turbine only and will have

a non-return valve in the extraction header/line to prevent steam from entering

the turbine. An admission turbine (also called induction) will allow excess header

steam to enter the turbine through the low pressure inlet. An extraction/admission

turbine will allow low pressure header steam to enter or exit the turbine

depending on system pressures. A turbine with admission capability will have a

stop valve or trip-and-throttle valve in the low pressure line to prevent steam from

entering the turbine when the unit is tripped. The type of turbine used will depend

on the system requirements and must be designed by the turbine manufacturer

to perform the functions required.

The 505E has two independent control channels available, the speed/load and

auxiliary controllers. The outputs of these two controllers are low-signal-selected

(LSS) to provide to speed/load demand signal to the ratio/limiter. In addition to

these channels, the speed/ load controller can be manipulated by another

controller, the cascade controller. The cascade controller is ‘cascaded’ into the

speed controller, whereby the speed controller setpoint is changed directly by the

cascade controller output. The auxiliary controller can act as either a control

channel or as a limiting channel. All three of these PID controllers have the

option of utilizing an analog input signal to remotely position their setpoints.

Additional features of the 505E include frequency control, isochronous

loadsharing, critical speed avoidance, idle/rated control, and an automatic start

sequence. There are two serial communications ports which can be used to

monitor and control the turbine using Modbus protocol.

85018V1

Extraction Turbines

The 505E control can be configured to operate single automatic extraction

turbines by controlling the interaction of the governor (HP or high pressure) valve

and the extraction (LP or low pressure) valve. (The 505E can also operate the

governor valve and the first extraction valve of multiple extraction turbines).

Single automatic extraction turbines have a high pressure stage and a low

pressure stage, each controlled by a valve. Steam enters the turbine through the

HP valve (see Figure 1-2). At the downstream end of the HP turbine stage and

before the LP valve, steam can be extracted. The LP valve controls the entry of

steam into the LP turbine stage, and the diverting of steam through the extraction

line. As the LP valve is opened, more steam enters the LP stage and less is

extracted.

In most cases, the operator of an extraction turbine needs to maintain both

turbine speed/ load and extraction pressure/flow at constant levels. Changing the

position of either the HP valve or the LP valve affects both turbine speed/load

and extraction. If either the load on the turbine or the extraction demand

changes, both the

Admission Turbines

The 505E control can be configured to operate single automatic admission

turbines by controlling the interaction of the governor (HP or high pressure) valve

and the extraction (LP or low pressure) valve.

Single automatic admission turbines have a high pressure stage and a low

pressure stage, each controlled by a valve.  Steam enters the turbine through the

HP valve (see Figure 1-3) and at the downstream end of the HP turbine stage,

before the LP valve.  The LP valve controls the entry of steam into the LP turbine

stage and through the admission line.  As the LP valve is opened, more steam

enters the LP stage.

In most cases, the operator of an admission turbine needs to maintain both

turbine speed/ load and admission pressure/flow at constant levels.  Changing the

position of either the HP valve or the LP valve affects both turbine speed/load

and admission.  If either the load on the turbine or the admission demand

changes, both the HP valve position and the LP valve position must be changed

to maintain speed/load and admission.

The movement of both valves is automatically calculated by the 505E’s ratioing

logic based on the turbine performance parameters to minimize valve/process

interaction.

Extraction and Admission Turbines

The 505E control can be configured to operate single automatic extraction and

admission turbines by controlling the interaction of the governor (HP or high

pressure) valve and the extraction (LP or low pressure) valve.

Single automatic extraction and admission turbines have a high pressure stage

and a low pressure stage, each controlled by a valve.  Steam enters the turbine

through the HP valve (see Figure 1-2).  At the downstream end of the HP turbine

stage and before the LP valve, steam can either be extracted or admitted

(inducted) into the LP turbine stage.  The LP valve controls the entry of steam into

the LP turbine stage.  As the LP valve is opened, more steam enters the LP stage

and less is extracted.

In most cases, the operator of an extraction turbine needs to maintain both

turbine speed/ load and extraction or admission pressure/flow at constant levels.

Changing the position of either the HP valve or the LP valve affects both turbine

speed/load and extraction or admission.  If either the load on the turbine or the

extraction / admission demand changes, both the HP valve position and the LP

valve position must be changed to maintain speed/ load and extraction/

admission.  The movement of both valves is automatically calculated by the

505E’s ratioing logic based on the turbine performance parameters to minimize

valve/process interaction.

Speed Control

The speed control receives a turbine speed signal from one or two magnetic

pickups or proximity probes.  The speed PID (proportional, integral, derivative)

control amplifier then compares this signal to the speed setpoint to generate an

output signal to the ratio/ limiter (through a low signal select bus).

Extraction/Admission Control

The Extraction/Admission (Extr/Adm) control receives an extraction/admission

(4–20 mA) signal from a pressure or flow transducer. The Extr/Adm PID

controller then compares this signal to the setpoint to generate an output signal

to the Ratio/Limiter.

The Extr/Adm control can also receive a programmable (optional) droop

feedback signal to increase the stability of the extraction control loop.

The Extr/Adm setpoint is adjustable with raise or lower commands through the

keypad on the front of the control, the remote contact inputs, or the

communication links. Also, the setpoint can be directly set by entering the new

setpoint from the keypad or through either Modbus communications link. In

addition, a remote extr/adm setpoint analog input can be programmed to

remotely position the Extr/Adm setpoint.

Remote Extraction/Admission Setpoint

One of the 4–20 mA inputs can be configured to remotely adjust the Extr/Adm

setpoint. The remote setpoint input directly affects the 505E’s Extr/Adm setpoint.

The maximum rate at which the remote input signal can change the setpoint is

programmable and can be changed in the Run mode. When the remote setpoint

is enabled, the Extr/Adm setpoint will move at a much slower rate until the two

settings are matched, at which point the setpoint will be allowed to move at the

maximum rate. The remote setpoint function can be enabled and disabled as

required from the front-panel keypad, the remote contact inputs or either Modbus

communication link.

Ratio/Limiter

The Ratio/Limiter receives input signals from the speed (or aux) and extr/adm

control PIDs. The ‘ratio’ logic uses these signals and, based on the turbine

performance parameters, produces two output signals, one to control the HP

actuator and one to control the LP actuator. The ‘limiter’ logic keeps the actuator

outputs within the boundaries of the turbine steam map.

The ratio logic controls the interaction of both HP and LP valves to maintain

desired turbine speed/load and extraction/admission pressure/flow levels. By

controlling valve interaction, the ratio logic minimizes the effects of one controlled

process on the other controlled process.

When speed/load or extraction/admission demands cause the turbine to reach an

operating limit, the limiter logic limits the HP or LP valves to maintain speed/load

or extraction/ admission demands depending on the priority selected

26871 505 Enhanced Digital Control for Steam Turbines

Replacement/Exchange: Replacement/Exchange is a premium program designed for the user who is in need of

immediate service.  It allows you to request and receive a like-new replacement unit in minimum time (usually within

24 hours of the request), providing a suitable unit is available at the time of the request, thereby minimizing costly

downtime.

This option allows you to call your Full-Service Distributor in the event of an unexpected outage, or in advance of a

scheduled outage, to request a replacement control unit.  If the unit is available at the time of the call, it can usually be

shipped out within 24 hours.  You replace your field control unit with the like-new replacement and return the field unit

to the Full-Service Distributor.

Flat Rate Repair: Flat Rate Repair is available for many of the standard mechanical products and some of the

electronic products in the field.  This program offers you repair service for your products with the advantage of

knowing in advance what the cost will be.

Flat Rate Remanufacture: Flat Rate Remanufacture is very similar to the Flat Rate Repair option, with the exception

that the unit will be returned to you in “like-new” condition.  This option is applicable to mechanical products only.

Returning Equipment for Repair

If a control (or any part of an electronic control) is to be returned for repair, please contact your Full-Service

Distributor in advance to obtain Return Authorization and shipping instructions.

When shipping the item(s), attach a tag with the following information:

 return number;

 name and location where the control is installed;

 name and phone number of contact person;

 description of the problem;

 complete Woodward part number(s) and serial number(s);

 instructions describing the desired type of repair.

Contacting Woodward’s Support Organization

For the name of your nearest Woodward Full-Service Distributor or service facility, please consult our worldwide

directory published at www.woodward.com/directory.

You can also contact the Woodward Customer Service Department at one of the following Woodward facilities to

obtain the address and phone number of the nearest facility at which you can obtain information and service.

Products Used In

Regulatory Compliance & Declarations

European Compliance for CE Marking:

These listings are limited only to those units bearing the CE Marking.

EMC Directive:

ATEX – Potentially

Explosive

Atmospheres

Directive:

North American Compliance:

Declared to 2004/108/EC COUNCIL DIRECTIVE of 15 December 2004

on the approximation of the laws of the Member States relating to

electromagnetic compatibility and all applicable amendments.

Declared to 94/9/EEC COUNCIL DIRECTIVE of

23 March 1994 on the approximation of the laws

of the Member States concerning equipment

and protective systems intended for use in potentially explosive

atmospheres.

Zone 2. Category 3. Group II G, EEx nA II T3 X

These listings are limited only to those units bearing the UL agency identification.

UL:

UL Listed for Class I, Division 2. Groups A, B, C, & D

T3A at 60 °C Ambient (NEMA 4X or similar enclosure provided)

T3B at 65 °C Ambient (NEMA 4X or similar enclosure omitted)

For use in Canada and the United States per UL File E156028

Wiring must be in accordance with North American Class I, Division 2 or European Zone 2 wiring

methods as applicable, and in accordance with the authority having jurisdiction.

Marine Compliance (24 V Version Only)

Det Norske Veritas (DNV):

Certified for Marine Applications, Temperature Class B, Humidity Class

B, Vibration Class A, EMC Class A, and Enclosure Class B per DNV

Rules for Ships, Pt. 4. Ch. 9. Control and Monitoring Systems.

Other International Compliance

C-Tick:

(ACA/RSM)

Declared to Australian Radiocommunications

Act of 1992 and the New Zealand Radiocommunications Act of 1989.

GOST-R: Certified for use in explosive atmospheres within the Russian Federation

per GOST-R certificate РОСС US.ГБ04.В01002 with marking

2ExnAIIT3Х

Special Conditions For Safe Use

Field wiring must be stranded copper wire rated at least 75 °C for operating ambient temperatures

expected to exceed 50 °C.

Peripheral equipment must be suitable for the location in which it is used.

A fixed wiring installation is required.

Grounding is required by the input PE Terminal.

A switch or circuit breaker shall be included in the building installation that is in close proximity to the

equipment and within easy reach for the operator and is clearly marked as the disconnecting device for

the equipment.

Product Specification 03365

505E (Extraction / Admission)

Digital Control for Steam Turbines Applications

The 505E controller is

designed to operate

single-extraction

and/or admission

steam turbines of all

sizes and

applications. This

steam turbine

controller includes

specifically designed

algorithms and logic

to start, stop, control,

and protect single

extraction and/or

admission steam

turbines or turboexpanders, driving generators, compressors, pumps, or industrial fans. The 505E

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

pressure, exhaust header pressure, extraction or admission 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 505E controller senses turbine speed

via passive or active speed probes and controls the steam turbine through HP and

LP actuators connected to the turbine steam valves.

03365

The 505E controller senses extraction and or admission pressure via a 4–20 mA

transducer and uses a PID through a ratio/limiter function to accurately control

extraction and/or admission header pressure, while protecting the turbine from

operating outside of its designed operating envelope. The controller uses the specific

turbine’s OEM steam map to calculate its valve-to-valve decoupling algorithms and

the turbine operating and protection limits.

Description

The 505E 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 unit’s two-line 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. Unpluggable terminal blocks allow for easy system installation,

troubleshooting, and replacement.

Cost‐Effective Design

The 505E control is designed to function as the turbine control,

system sequencer, operator control panel, and first-out

indicator. This encompassing design minimizes external

system devices as well as system installation, wiring, and

troubleshooting.

03365

This field configurable controller allows major functional changes

to be made at site, often by knowledgeable plant personnel, and

minor functional changes to be on-line as process changes

require. The 505E control’s first-out-indicator logic indicates

internal as well as external system related alarm and shutdown

conditions, greatly simplifying and reducing system

troubleshooting.

Communications

The 505E controls can communicate directly with plant

Distributed Control Systems and/or CRT-based operator

control panels, through two Modbus® * communication ports.

These ports support RS-232. RS-422. and RS-485

communications using ASCII or RTU Modbus protocols.

Communications between the 505E and a plant DCS can also

be performed through hardwired connections. Since all 505E

PID setpoints can be controlled through analog input signals,

interface resolution and control is not sacrificed.

*—Modbus is a trademark of Schneider Automation Inc.

System Protection

 Integral Overspeed Protection Logic

 First-out Indication (10 individual shutdown inputs)

 Turbine Operating Envelope Limiters

 Bumpless transfer between control modes if a transducer

failure is detected

 Local/Remote Control priority and selection

 Failsafe Shutdown Logic

Control

The following PIDs are available to perform as process

controllers or limiters:

 Speed/Load PID (with Dual Dynamics)

 Extraction / Admission PID

 Auxiliary PID (limiter or control)

 Cascade PID (Header Pressure or Tie-Line Control)

Control Specifications

INPUTS

 Power: 18–32 Vdc, 90–150 Vdc, 88–132 Vac

(47–63 Hz), 180–264 Vac (47–63 Hz)

 Speed: 2 MPUs (1–30 Vrms) or proximity probes

(24 Vdc provided), 0.5 to 15 kHz

 Discrete Inputs: 16 Contact Inputs (4 dedicated,

12 programmable)

 Analog Inputs: 6 Programmable Current Inputs

(4–20 mA)

OUTPUTS

 Valve/Actuator Drivers: 2 Actuator Outputs (4–20 mA or

20–160 mA)

 Discrete Outputs: 8 Relay Outputs (2 dedicated,

6 programmable)

 Analog Outputs: 6 Programmable Current Outputs

(4–20 mA)

COMMUNICATION

 Serial: 2 Modbus (ASCII or RTU) Comm Ports

(RS-232. RS-422. or RS-485 compatible)

Control Accessories

Control Assistant (Configuration Management Tool)

The Woodward Control Assistant software program is a

computer-based service tool that can be used with the 505E

control to upload, save, and download controller

configurations. Optionally, this service tool can also be used to

trend unit parameters, to compare differences in configuration

files, and to verify if control settings have been changed.

Functionality

The 505E’s control capabilities are:

 Speed/Frequency Control

 Extraction / Admission Header Pressure Control

 Turbine or Generator Load Control or Limiting

 Turbine Inlet Header Pressure Control or Limiting

 Turbine Exhaust Header Pressure Control or Limiting

 Plant Import/Export Power Control or Limiting

 Isochronous Load Sharing between units (with DSLC™

control)

Features

 Critical Speed Avoidance (3 speed bands)

 Auto Start Sequence (hot & cold starts)

 Valve Limiter(s)

 Security (Program is Password Protected)

 Dual Speed/Load Dynamics

 First-Out Indication (Shutdowns)

 Zero Speed Detection with proximity probe (< 0.5 Hz)

 Peak Speed Indication for overspeed trip

 Two Programmable Functions Keys on the 505E’s front

panel

 Two independent Modbus comm links

 Remote analog setpoints for Speed/Load, Ext/Adm, Aux,

and Cascade

 Program upload/download capability

 Feed-forward decoupling algorithm for compressors

Operating Conditions

 –25 to +65 °C ambient air temperature range

 Optional NEMA type 4 (watertight and dust-tight, indoor/outdoor) enclosure for bulkhead mounting with a temperature range

from –25 to +55 °C

 Approximate dimensions 14L x 11H x 4D inches (356 x 279 x 102 mm)

 Approximate bulkhead enclosure dimensions 20L x 20H x 7.6D inches (508 x 508 x 193 mm)

 Humidity: Lloyd’s ENV2 test #1

 Dry heat: Lloyd’s ENV3

 Salt fog: US MIL-STD-810 method 509.2 procedure 1

 Shock: meets US MIL-STD-810C, method 516.2-1. procedure 1B

 Vibration: Lloyd’s ENV2 test #1

 Certifications: CE (18–32 Vdc version only), UL, & cUL

Pollution Resistance

 Particulate Pollution Resistance: IEC 664-1 Pollution Degree 2 (Normally only nonconductive pollution occurs. Temporary

conductivity caused by condensation is to be expected.)

 Gaseous Pollution Resistance: The polyacrylate conformal coating withstands NO2. CO2. SO2. and H2S gases per IEC

60068-2-60:1995 Part 2.60 Methods 1 and 4 (Flowing Mixed Gas Corrosion Test). It will withstand levels typical of

telecommunications and computer installations as defined by Battelle Labs Class III (between IEC 60721-3-3 classification

3C1 and 3C2. light industrial to urban industrial, heavy traffic).