Woodward 8273-1013 8273-1014 Digital Electronic Load Sharing

8273-1013 / Ordinary Locations

8273-1014 / Hazardous Locations

2301E-ST Digital Electronic Load Sharing

& Speed Control for Small Steam Turbines

Description

The 2301E-ST is a digital control with integral application software program designed for single-valve

steam turbines. Like Woodward’s 2301A and 2301D line of controls, this control is housed in a sheet

metal chassis and consists of a single printed circuit board. To facilitate unit retrofits, the 2301E-ST’s I/O

terminals are in the same general location as Woodward’s 2301A line of controls. This control is designed

to perform the speed and load control functions of a small steam turbine package. The 2301E-ST’s

application software is field configurable, allowing it to be configured and modified to meet site-specific

requirements.

The 2301E-ST has the following Woodward part numbers:

8273-1013 2301E Load Sharing and Speed Control, 24 Vdc input, Ordinary Locations

8273-1014 2301E Load Sharing and Speed Control, 24 Vdc input, Hazardous Locations

The 2301E-ST is configured and serviced (dynamic adjustments made) via a laptop computer connected

to the control’s RS-232 communications port. These configuration and dynamic settings are set, changed,

tuned, and saved via a laptop computer and Woodward’s user-friendly Control Assistant software

program. This program allows users to set and adjust all application-based parameters, plus upload and

download configurations to and from the control. The 2301E-ST includes the following basic turbine

control functions:

Speed control

Load control

Valve Limiter

Over speed trip

Shutdown logic

Alarm Logic

Platform Diagnostics

The following functions can be configured, depending on application requirements:

Manual, Semi-Automatic or Automatic Start Sequencing

Remote Speed Control

Isochronous Load sharing with soft load / unload transfer

Droop Load Control

Actuator Feedback Droop Control

Synchronizer Bias Signal Input

Power sensor Input (CTs, PTs)

Process Control

ServLink (DDE) / Modbus Communications

Self-Powered Actuator Option

The 2301E-ST hardware includes:

1 Load Sensor

3 PT Inputs, 3 CT Inputs

1 Actuator Driver

2 MPU Speed Sensor

1 Configurable Analog Output

2 Configurable Analog Inputs

8 Discrete (Switch) Inputs

4 Discrete (Relay Driver) Outputs

Applications

The 2301E-ST is a field-configurable control designed to perform the basic speed and load control

functions for single-valve steam turbines. It can be configured to allow a user to match the control’s

functionality to the application. Configuration and service (dynamic adjustments made) is done via a

laptop computer, connected to the control’s RS-232 communications port and utilizing Woodward’s

Control Assistant program which is a Windows-based PC software program. These configuration and

dynamic settings can be set, changed, tuned, and saved using this same program. See Chapter 3 for

instructions on configuring the control for your specific application.

Introduction

This chapter contains general installation instructions for the 2301E-ST control. Power requirements,

environmental precautions and location considerations are included to determine the best location for the

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

check-out procedure.

Unpacking

Before handling the control, read the “Electrostatic Discharge Awareness” information on page v. Be

careful when unpacking the electronic control. Check the control for signs of damage such as bent or

dented panels, scratches and loose or broken parts. If any damage is found, immediately notify the

shipper.

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

Avoidance of vibration

Selection of a location that will provide an operating temperature range of  –40 to +70 °C (–40 to +158 °F)

The control must NOT be mounted on the turbine.