Woodward 2301E, Инструкция по установке и эксплуатации, Страница: 22 / 182

2301E Digital Control Manual 26641
12 Woodward
Setting Speed Range
The Microprocessor inside the 2301E calculates the speed range to be used by
entering the engine/generator synchronous speed and number of gear teeth. This
configured speed sets the hardware-to-software scaling. The rated speed setting is
set in service as the speed reference selected when the Rated switch is closed.
The number of gear teeth is used by the control to convert pulses
from the speed sensing device to engine rpm. To prevent possible
serious injury from an overspeeding engine, make sure the control is
properly programmed to convert the gear-tooth count into engine
rpm. Improper conversion could cause engine overspeed.
The speed range is factory set for 900 Hz, 900 rpm (60 teeth). Refer to
Chapter 4 to change speed range and prevent possible overspeed.
Using the wrong speed range could cause an overspeed with
resulting damage to equipment or personal injury or death.
Potential Transformer Connections (Terminals 1
–3)
Connect the potential transformer secondary leads to the following terminals:
Phase A to terminal 1
Phase B to terminal 2
Phase C to terminal 3
The potential transformer secondary line-to-line voltage must produce 90 to 120 Vac or
200 to 240 Vac. The PT and CT input connections are not needed if using a DSLC,
DSLC-2, or easYgen device for load sharing or load control. Refer to the plant wiring
diagram, Figure 1-2.
Current Transformer Connections (Terminals 4
–9)
The standard method of connecting the current transformers is shown in the
plant wiring diagram, Figure 1-2. An alternate method is the open delta
connection shown in the insert in the plant wiring diagram.
Real Power Load Calculation
The 2301E does not used the Real Power Equation. Instead the control uses the
equation Power =

3 * I * COS Theta, I = current, and COS Theta = Power
Factor or the phase difference between the voltage and the current. In the
2301E, the PT Voltage part of the equation is deemed to be constant. Therefore
if the Voltage on the system changes, the calculated Power will change a small
amount.
Load Share Lines (Terminals 10
–12)
The Load Share Lines provide an analog communication path between
compatible controls. The 2301E provides an internal relay for connecting the
Load Share Signal to the internal circuitry at the appropriate times. When the
internal relay is closed, a green LED will illuminate between terminals 9 and 10.