22 TD_PCM1x_Packages_Function/Operation_08.04_GB
3.3 Operating
Conditions
GB
Synchron. GCB
D
Synchron. GLS
Operating mode: GCB is synchronized (Synchronous generators)
The GCB will be synchronized and will be closed when the synchronous condi-
tions are met. Synchronization will be carried out, if generator voltage and busbar
voltage are present.
GB
Synchron. MCB
D
Synchron. NLS
[PCM1-M]
Operating mode: MCB is synchronized (Synchronous generators)
The MCB will be synchronized and will be closed when the synchronous condi-
tions are met. Synchronization will be carried out, if busbar voltage and mains
voltage are present.
GB
Synchron. Extern
D
Synchron. Extern
[PCM1-G]
Operating mode: MCB is synchronized
In order to enable the synchronization of an external circuit breaker, the busbar
frequency will be controlled slightly oversynchronusly (with df max/2) to the mains.
GB
Close GCB
D
Zuschalten GLS
Operating mode: Switch on GCB (Asynchonous generators)
The GCB will be closed when the connect conditions are met. The connection will
be carried out, if the generator frequency has reached the limit value.
GB
Dead bus st.GCB
D
Schwarzst. GLS
Operating mode: Close GCB "black" (Synchronous generators)
The GCB is closed "black", if generator voltage is present and busbar voltage is
not present.
GB
Dead bus st.MCB
D
Schwarzst. NLS
[PCM1-M]
Operating mode: Close MCB "black" (Synchronous generators)
The MCB is closed "black", if mains voltage is present and busbar voltage is not
present.
GB
Start
D
Anlassen
Operating mode: Start engine
The engine is started by reason of an automatically (e.g. mains failure), a partly
automatically (e.g. apply terminal 6 "Start engine") or a manually status (e.g. press-
ing button "START").
GB
Preglow
D
Vorglühen
Operating mode: Preheating (Diesel engine)
The diesel engine is preheated for a certain time (for it one of the control relays will
be closed).
GB
Turning
D
Spülvorgang
Operating mode: Purging operation (Gas engine)
In order to combust the remaining gas in the engine completely (and to prevent a
backfiring or deflagration when switching on the ignition), the engine will be re-
volved by the starter before switching on the ignition.
GB
Ignition
D
Zündung
Operating mode: Ignition ON (Gas engine)
The ignition is activated.
GB
Governor down
D
Grundstellung
Operating mode: Drive governor down (Diesel engine)
The speed controller outputs an "n" signal before starting the engine to drive the
connected speed governor to its initial position. If this would not be performed, the
engine would follow a steep speed curve and be switched off with overspeed.
