A53 Z0 9 0020 L En Technical documentation
6.2
Automatic mode
Speed and voltage droop are inhibited in this mode, the system is running isochronously, i.e. the speed and
the voltage remain unchanged whatever the load.
This mode has 4 main ways of operating:
6.2.1
One generator with Change Over
The generator starts with a remote start or in the case of mains failure. When the generator is ready
(voltage, frequency), the mains breaker is opened and the generator breaker is closed. Should the mains
return to normal conditions or remote start is off, after a programmed delay the generator breaker is
opened, the mains breaker is closed and the generator set is stopped.
6.2.2
One generator paralleling with the mains
The generator starts with a remote start or if there is a mains failure. Paralleling depends on configuration:
NO CHANGE OVER
NO BREAK CHANGE OVER
PERMANENT
Load sharing can be on a "base load" or "peak shaving" (“peak lopping”) basis. Depending on the
configuration, the generator will stop either when there is a remote stop or when mains power returns to a
stable level.
6.2.3
Power plant with several generators without
automatic load/unload
The generator starts with a remote start signal, and parallels with the bus. If there is a dead bus, GENSYS
2.0 will check with the other GENSYS 2.0 units before closing the bus breaker (this depends on the
validation of the dead bus management). The load sharing is accomplished via the inter GENSYS CAN© bus
(§15.2) or via the parallel lines (§8.4). The generators stop with a remote stop signal.
6.2.4
Power plant with several generators with automatic
load/unload
The communication between GENSYS 2.0 units is via the inter GENSYS CAN© bus (§15.2) and determines
which generators start or stop. The number of generators used depends on load requirements (all
generators receive the remote start signal but only start if necessary).
Note: The operating modes are described in the chapter 8 below.
6.3
Test mode
This mode allows testing automatic mode behaviour. When [TEST] key is pressed, the engine starts as if
there was a remote start, and GENSYS 2.0 will carry out the standard Auto mode sequence. To exit “TEST
MODE”, push [AUTO] or [MAN] key.
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