easYgen-3500XT-P2-K58 8440-2318

External breaker logic is enabled via configuration of parameter

3411 Ä p. 217 to "EXTERNAL".

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.

STOP MANUAL AUTOMATIC

The GCB is opened; the MCB is operated

depending on the setting of "Enable MCB"

(parameter 12923 Ä p. 228/Ä p. 907).

Mains parallel operation can be initiated by

pressing the "GCB On" or "MCB On" push

button.

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.

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. 228/Ä p. 907).

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.

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.

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.

The GCB is opened; the MCB is operated

depending on the setting of "Enable MCB"

(parameter 12923 Ä p. 228/Ä p. 907).

Synchronization of either the generator or

the mains can be initiated by pressing the

"GCB On" or "MCB On" push-button.

The GCB is synchronized via an add-on

request. After the GCB closes the MCB is

opened. Following the shed-off request

being issued, the MCB is synchronized

and closed. After the MCB has closed the

GCB is opened.

Emergency power: The emergency power

operation is terminated following the expi

ration of the mains settling time and the

MCB synchronizing to the generator. The

MCB closes and the GCB opens immedi

ately afterwards.

INTERCHANGE: Breaker logic "Soft loading / interchange synchronization"

The MCB and the GCB are synchronized, in order to avoid a dead busbar in this breaker logic mode. The operation of a breaker

under load is avoided by utilizing the ability to soft load. Continuous mains parallel operation is not possible with this breaker logic.

Following the shed-off request, the MCB synchronizes and closes, the generator soft unloads to the mains and the GCB opens. After

the GCB is open the engine is stopped following the expiration of the configured cool down period.

The GCB is opened; the MCB is operated

depending on the setting of "Enable MCB"

(parameter 12923 Ä p. 228/Ä p. 907).

Synchronization of either the generator or

the mains can be initiated by pressing the

"GCB On" or "MCB On" push-button.

Via an engine request, the GCB is

synchronized and the generator power is

increased. The MCB is then opened. Fol

lowing the disabling of the engine request,

the MCB is reverse synchronized and the

GCB is then opened.

Emergency power: The emergency power

operation is terminated following the expi

ration of the mains settling time. The MCB

closes, the load is transferred, and the

GCB opens.

STOP MANUAL AUTOMATIC

PARALLEL: Breaker logic "Mains parallel"

This operation mode may be used both in the case of an islanded system, an islanded parallel system, and a system that is operated

in mains parallel.

The GCB is opened. Mains parallel operation can be performed

via the "GCB On" push-button.

The GCB is synchronized via an add-on

request and mains parallel operation is

performed.

When a shed-off request is issued, the

generator sheds load, the GCB is opened,

and the engine is shut down following the

configured cool down period

STOP MANUAL AUTOMATIC

PARALLEL: Breaker logic "Mains parallel"

This operation mode may be used both in the case of an islanded system, an islanded parallel system, and a system that is operated

in mains parallel.

The GCB is opened. Mains parallel operation can be performed

via the "GCB On" push-button.

The GCB is synchronized via an add-on