Do NOT use the minimum-fuel contact as a part of any emergency stop sequence. The emergency may be caused by a governor malfunction which would also cause a malfunction of the minimumfuel feature. Use of the minimum-fuel contact for an emergency stop sequence could cause overspeed of the prime mover and mechanical
damage and personal injury, including death.
The 2301A Speed Control controls the speed or load of diesel or gas engines, or
steam or gas turbines. These power sources are referred to as "prime movers"
throughout this manual.
The control is housed in a sheet-metal chassis and consists of a single printed
circuit board. All potentiometers are accessible from the front of the chassis.
The 2301A Speed Control provides control in the isochronous mode with droop
available through an externally wired potentiometer.
The isochronous mode is used for constant speed of the controlled prime mover
as long as it is able to provide the load. Isochronous is also used when load
sharing with a Woodward load sensor.
External droop is used for speed control as a function of load when a prime
mover is operating on an infinite bus or when two or more prime movers are in
parallel operation.
The 2301A system for a prime-mover includes:
· A 2301A electronic speed control,
· An external power source,
· A speed-sensing device (MPU), and
· A proportional actuator to position the fuel- or steam-metering device.
Part Number Table
Supply Voltage Special Features Part Number
Forward Reverse
88–131 Vac or
90–150 Vdc Tandem Actuators 9905-136 9905-138
10–40 Vdc Tandem Actuators 9905-135 9905-137
88–131 Vac or
90–150 Vdc
Standard Speed
Control
9905-132
9907-015*
9905-134
9907-017*
10–40 Vdc Standard Speed
Control
9905-131
9907-014*
9905-133
9907-016*
88–131 Vac or
90–150 Vdc 0–400 mA Output 9905-448
Special controls with 4–20 mA or other outputs are available.
*—These part numbers are EU Directive Compliant
