26641 handbook
The Woodward 2301E controls load sharing and speed of generators driven by diesel or gaseous
engines. (These power sources are referred to as “prime movers” throughout this manual.) The 2301E is
a microprocessor-based digital control designed to include the functions of and be compatible with 2301A
and 2301D load sharing controls. The increased flexibility of software allows the 2301E to include control
functions that required additional equipment in previous versions of 2301A and 2301D control systems.
The 2301E therefore is suitable for upgrading existing control systems for increased functionality in new
installations.
The 2301E has the following Woodward part numbers:
8273-1011
2301E Load Sharing and Speed Control, 24 Vdc input,
Ordinary Locations
8273-1012
2301E Load Sharing and Speed Control, 24 Vdc input,
Hazardous Locations
The control is housed in a sheet-metal chassis and consists of a single printed circuit board. The 2301E is
set up and configured through an external computer connected at the 9-pin connector (RS-232 Port) at
the front of the control. The configuration software (either Servlink / Watch Windows or Control Assistant)
can be downloaded from our website at www.woodward.com.
The 2301E provides control in either isochronous mode, droop mode, or base load mode. The 2301E will
allow for soft load transfer when being added to or removed from a bus.
The isochronous mode is used for constant prime mover speed with:
Single prime mover operation or
Two or more prime movers controlled by Woodward analog load sharing control systems on an
isolated bus
The droop mode is used for speed control as a function of load with:
Single prime mover operation on an infinite bus or
Parallel operation of two or more prime movers
The base load mode provides constant load level operation against a bus with the load controlled by the
2301E.
The load setting is set by a fixed reference,
External input analog input,
External contact control of the reference.