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.