Woodward EGCP-2 - Figure 3-18. Example Using the NC Output to Control the Mains (Utility) Contactor (ENERGIZE to OPEN)

Manual 26076 EGCP-2 Engine Generator Control Package
Woodward 35
The EGCP-2 will DE-ENERGIZE (continuously) to close the Mains Contactor
and ENERGIZE (continuously) to open the Mains Contactor. This is reverse
logic from the Generator Contactor Close, discrete output # 2. External logic will
be needed to verify the contactors state when installing or replacing EGCP-2
controls and for multiple control systems.
CAUTION—REMOVING POWER
When power is removed from the EGCP-2, the “Mains Breaker Close” output
will be in the De-energized state and attempt to close the Mains contactor.
5
Discrete
Output #1
7
6
Mains
Contactor
Close
VIS-154a
01-06-01
EGCP-2
+ V
Mains (utility)
Contactor
Open/Close Coil
Figure 3-18. Example Using the NC Output to Control the Mains (Utility)
Contactor (ENERGIZE TO OPEN)
Discrete Output #2—Generator Breaker Close
With the relay de-energized, this output has Normally Open (NO), terminals 8
and 9, and Normally Closed (NC), terminals 9 and 10, contacts to select from.
The “Generator Breaker Close” relay output is utilized by the EGCP-2 to
command the Generator Circuit breaker to close. This output is configured for
use with a BREAKER or a CONTACTOR in the Configuration menu under “CKT
Breaker Control”.
Breaker
When in the Breaker configuration, the EGCP-2 will ENERGIZE (momentary) to
close the Generators Breaker. The ENERGIZE time is determined by the “CB
Hold Time” in the Synchronizer menu. Discrete Output #10 is used to open the
generators breaker.