Manual 26174
EGCP-2 Engine Generator Control Package
Woodward
95
PF Reference
PF level that will be maintained by the generator while in Base Load or
Process control modes.
Can be set for leading or lagging power factor.
Scaled from –0.5 (0.5 leading) to +0.5 (0.5 lagging).
PF Deadband
± deadband around PF reference point.
Set in PF units.
Active in PF and PF sharing modes.
Can be used to stabilize units at low loads if needed.
Process Control
Process Import/Export Hardware
EGCP-2 Control can accept a 4–20 mA or 1–5 Vdc input signal from a kW
transducer. Input signal conditioning is selected by a dip switch on the back of
the EGCP-2 control, switch position 4, switch number 4. Closing this switch
selects the 4–20 mA input hardware. Opening this switch selects the 1–5 Vdc
input hardware. See the EGCP-2 layout diagram for switch location on the unit.
Dip Switch # 4
SW - 4
___________________________
1. +5V RS-485
2. 123 ohm RS-485 Term
3. 123 ohm RS-485 Termination -
4. 4-20 mA Process Input
4
3
2
1
Figure 4-29. EGCP-2 Control Dip Switch
Process Dynamics
Process Master Uses Process PID to control.
Gain, Stability, Derivative, Filter, Droop.
Slaves to the Process Master use Load Control PID Values to track master
system load reference.
Process Action
Defines action of speed bias when unit is operating in process control in
parallel with the mains.
Direct action = Unit increases speed bias (fuel) to increase process 4–20
mA input.
example: Export Power control
Indirect action = Unit decreases speed bias (fuel) to increase process 4–20
mA input.
example: Import Power Control