Woodward 2301E, Инструкция по установке и эксплуатации, Страница: 12 / 182

2301E Digital Control Manual 26641
2 Woodward
The 2301E Control Hardware includes:

1 Load Sensor

1 Actuator Driver

1 MPU Speed Sensor

1 Configurable Analog Output

2 Configurable Analog Inputs

8 Discrete (Switch) Inputs (3 inputs are configurable)

4 Configurable Discrete (Relay Driver) Outputs

2 Serial Ports (RS-232 and RS-422)
The following is an example of the typical hardware needed for a 2301E system
controlling a single prime mover and generator:

A 2301E electronic control

An external 18 to 36 Vdc power source

A speed-sensing device, typically a Magnetic Pickup (MPU)

A proportional actuator to position the fuel-metering device

Current and potential transformers for measuring the load carried by the
generator
The engine and generator synchronous speed (50 or 60 Hz Generator
Frequency) needs to be within 90 to 3600 rpm. The frequency from the magnetic
pickup must be within the range of 100 to 25 000 Hz at rated speed. The 2301E
speed range needs to be configured using an external computer during
installation.
The 2301E has special algorithms that will enhance the speed controls transient
response by utilizing Load Pulse and Load Rejection logic. By looking at the
derivative or rate of change of the generator load, we can anticipate a speed or
frequency change. This anticipation logic can temporarily bump the speed up or
down to counter-react the speed change due to load. Service Menu W contains
all of the variables to set up this feature.
These 2301E controls operate with an input of 18 to 36 Vdc.
Applications
Because of the configuration software available in the 2301E hardware,
application variations can be selected using an external computer. Changing the
application to accommodate engine speed range, gear teeth, and selection of
forward or reverse acting actuator is a matter of software setup rather than
changing hardware. See Chapter 4 to enter control set points.
The speed is factory set for 900 rpm, 900 Hz MPU speed with 60 teeth.
Using the wrong speed configuration could cause an overspeed with
resulting damage to equipment or personal injury or death.
The 2301E Control can be configured for forward- or reverse-acting applications.
In reverse-acting systems, the actuator calls for more fuel when the actuator
voltage decreases. Complete loss of voltage to the actuator will drive the actuator
to full fuel. This allows a backup mechanical ballhead governor to take control
rather than shut down the prime mover as would a direct-acting system.
External wiring connections for reverse-acting controls are identical
to those for direct-acting controls.