Woodward easYgen-2000 Series User Manual page 198

Configuration
Configure Application > Configure Breakers > Transition Modes (Breaker ...
Overview for application mode A04
STOP
EXTERNAL: Breaker logic "External"
In a mains parallel operation, decoupling from the mains is carried out via the MCB or the GCB in the event of a mains failure. The
breakers will not automatically close in emergency power operation. Emergency power operation in accordance with European Com‐
munity Specification DIN VDE 0108 is not possible in this power circuit breaker logic.
The GCB is opened.
PARALLEL: Breaker logic "Mains parallel operation"
The MCB and GCB are synchronized to permit continuous mains parallel operation in this breaker logic mode.
The GCB is opened; the MCB is operated
depending on the setting of "Enable MCB"
(parameter 12923 Ä p. 206).
OPEN TRANSIT.: Breaker logic "Open transition / change-over / brake-before-make"
The MCB and GCB are never synchronized in this breaker logic mode.
The GCB is opened; the MCB is operated
depending on the setting of "Enable MCB"
(parameter 12923 Ä p. 206).
CLOSED TRANSIT.: Breaker logic "Closed transition / make-before-brake / overlap synchronization"
The MCB and the GCB are synchronized, in order to avoid a dead busbar in this breaker logic mode. Immediately after the synchroni‐
zation of one breaker, the other is opened. Continuous mains parallel operation is not possible.
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All breaker control (especially the CB closing instructions) must be
carried out via master controller (e.g. a PLC).
The easYgen controller always issues additionally the breaker
open command under fault conditions and in the breaker unloading
states (Unloading GCB) if the stop request is active.
MANUAL
The MCB and the GCB may be manually
opened. The circuit breakers are opened
for decoupling from the mains.
Mains parallel operation can be initiated by
pressing the "GCB On" or "MCB On" push-
button.
A change can be made to either generator
or mains operation by pressing either the
"GCB On" or "MCB On" push-button. The
"STOP" push-button opens the GCB and
simultaneously stops the engine.
easYgen-2200/2500 | Genset Control
AUTOMATIC
The GCB is opened if the genset is
stopped or if decoupling from the mains,
but will not close if the engine is started.
The MCB is opened only if decoupling
from the mains, and is never closed.
The GCB is synchronized via an add-on
request and a mains parallel operation is
performed. When a shed-off request is
issued, the generator sheds load and
opens the GCB and the engine is shut
down following the configured cool down
period.
Emergency power: The emergency power
operation is terminated following the expi‐
ration of the mains settling time. The MCB
is synchronized and closed, putting the
system back into a mains parallel opera‐
tion.
A change is made to generator operation
through an add-on request. Once the add-
on request is terminated, the system
changes back to mains operation. The
MCB is closed when the busbar is dead,
even if there has not been an add-on
request. Emergency power operations are
terminated following the expiration of the
mains settling timer. The GCB opens and
the MCB closes, transferring all loads to
the mains.
37535B