Woodward 85018V2 505E Digital Governor for Extraction Steam Turbines

85018V2

505E Digital Governor

for Extraction Steam Turbines

505 HMI Software

Woodward offers two different HMI software packages, OpView and 505View,

which allow an operator to remotely view operating inputs, adjust control

setpoints, issue Run mode commands, and monitor/troubleshoot the turbine

control.    Both HMI packages are self-configuring which eliminates all field

engineering—they automatically configure their screens to match the control's

programmed application.

The OpView is comprised of an industrialized NEMA 4 touchscreen hardware

package bundles together with a Woodward developed software interface

program.    The 505View is a unbundled Intellution-based software package that

runs on a pc (hardware can be optionally purchased).    Both HMI packages are

pre-configured to communicate via Modbus® * protocol with either a 505 or 505E

Woodward steam turbine control and offer the following features.

*—Modbus is a trademark of Schneider Automation Inc.

Automatic Screen Generation based on control configuration

Security with multiple User Levels

Remote Access Capability1

Real-Time and Historical Trending2

Alarm/Trip Status Indication

Alarm/Trip Log with Time Tagging and First-Out Indication

I/O and System Troubleshooting

Graphic System Control screens

Event Status Logging and History3

Notes:

1 505View only

2 OpView has Real-Time Trending only;    505View has both

3 OpView has Logging only;    505View has Logging and History

automatically configures its screens to match the 505E’s programmed

application.  If the 505E is not configured to accept Modbus commands, the HMI

functions as a system monitor only.  If the 505E is configured to accept Modbus

commands, all 505E Run Mode operations can be monitored and performed

through it (start, stop, mode enable/disable, setpoint raise/lower).  For safety

purposes, the Overspeed test function can not be performed through the HMI.

See Volume 1. Chapter 7 of this manual for more information on programming

Modbus ports.

User-friendly touch screens allow operators to view and control multiple modes of

operation and setpoints from one screen.  Ten different screens are available to

allow operators the flexibility of viewing.  These screens display the following

information:

Controlling parameter information

Complete starting sequences

Turbine and/or Generator information

Speed, Extr/Adm, Aux, Casc, & Limiter information

Analog Input and Output levels

Contact Input and Relay Output states

Alarm and Shutdown Log

The OpView or 505View can interface with the 505E through serial RS232.

RS422. or RS485 communications.  By using RS422 or RS485 communications,

the HMI can be located up to 4.000ft (1.220meters) from the 505E digital control.

Digital Remote Final Driver

Digital Remote Final Driver (DRFD) is used to interface the 505E digital control to

existing valve operators or Woodward actuators that are integrating in action or

are not compatible with the 505E.

The 505E’s actuator outputs have the capability of driving a 4–20 mA or 20–160

mA (200 mA max) proportional signal into an actuator coil. These 505E actuator

output signals represent a demand signal equal to desired valve position

(proportional). If the application’s actuator or servo assembly requires a different

drive signal, or control action (integrating with a null setting), a Digital Remote

Final Driver or equivalent device must be used.

Woodward Digital Remote Final Drivers accept a 4–20 mA actuator-drive signal

proportional to desired valve position, and position a servo assembly accordingly.

Integrating or proportional type DRFDs are available depending on the servo

assembly being interfaced to. Woodward DRFDs have the capability of driving

unipolar or bipolar actuator demand signals, up to 0–400 mA or +400 mA

respectively.

The Digital Remote Final Driver is housed in a NEMA-4X enclosure with a hinged

cover and consists of driver and power supply modules. The driver module uses

plug-in jumpers and an alphanumeric display to facilitate field configuration and

calibration.

Proportional type DRFDs can provide an output drive signal of up to 400 mA, to

be compatible with existing servo assemblies. This drive signal is proportional to

the 4–20 mA input signal received from the 505E digital control.

Integrating type DRFDs sense actual valve position (through, LVDTs, RVDTs,

MLDTs, or DC position feedback devices), compare this signal to the input

position demand signal from the 505E, and output a drive signal to position a

servo assembly accordingly. See Figure 1-2.

Please refer to Woodward Product Spec 85532 for more information on DRFDs

and their capabilities.

Real Power Sensor

A Real Power Sensor is used to sense the real power produced by a generator

or flowing through a tie line. Woodward Real Power Sensors sense three-phase

volts, three-phase amps, compare each phase’s voltage to current relationship,

and develop a 4–20 mA output proportional to real power.

Woodward manufactures two types of Real Power Sensors. The first type of RPS

is designed to sense power flow in one direction only (0 to +5 A CT current only),

and output a proportional 4–20 mA signal. This type of RPS was designed for