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EGCP-2 Engine Generator Control Package
Manual 26174
44
Woodward
Discrete Output #7—Local Bus PT Connect
The “Local Bus PT Connect” relay utilizes a set of Normally Open (NO) contacts
on terminals 21 and 22.
The “Local Bus PT connect” relay output is utilized by the EGCP-2 to connect the
Local Bus PT to the EGCP-2’s “Utility and Local Bus PT Input” on terminals 40
and 41. Due to relay load limitations, it is required that this output be configured
to drive an interposing relay with which to control the Local Bus PT connection.
Refer to Figures 3-7 and 3-8 of this chapter for detailed wiring information. This
type of relay configuration allows a break-before-make action, insuring that the
Utility Tie PT and the Local Bus PT are never connected.
Discrete Output #8—Utility Tie (Mains) PT Disconnect
The “Utility Tie (Mains) PT Disconnect” relay utilizes a set of Normally Open (NO)
contacts on terminals 23 and 24.
The “Utility Tie (Mains) PT disconnect” relay output is utilized by the EGCP-2 to
disconnect the Utility PT from the EGCP-2’s “Utility and Local Bus PT Input” on
terminals 40 and 41. Due to relay load limitations, it is required that this output be
configured to drive an interposing relay with which to control the Utility Tie PT
connection. Refer to Figures 3-7 and 3-8 of this chapter for detailed wiring
information. This type of relay configuration allows a break-before-make action,
insuring that the Utility Tie PT and the Local Bus PT are never connected.
Discrete Output #9—Mains Breaker Trip (Open)
With the relay de-energized, this output has Normally Open (NO), terminals 25
and 26, and Normally Closed (NC), terminals 26 and 27, contacts to select from.
The “Mains Breaker Trip (open)” relay output is utilized by the EGCP-2 to
command the Mains (utility) Breaker to open. This output is operational when
configured for use with a BREAKER, in the Configuration menu under “CKT
Breaker Control”. If configured for Contactor, see Discrete Output #1 for Mains
Contactor open/close operation.
Every EGCP-2 that has the capability of being a MASTER unit must have this
relay wired into the Mains (utility) Breaker open circuitry.
Breaker
When in the Breaker configuration, the EGCP-2 will ENERGIZE (momentary) to
open the Mains (utility) Breaker.