SMA SI 3324 Installation - Manual (Page 113)

SMA Technologie AG Generator
Installation Guide SI3324/4248-14:SE2406 Page 113
12.2 Temperature-dependent Generator Request
Activation of load-dependent generator requests (see above - "24-12 PGenActiv"
parameter set to "ON") also switches on temperature-dependent generator requests.
The operating temperature of the Sunny Island 3324/4248 is used as the
measurement value.
When the Sunny Island 3324/4248 is operated under heavy loads for an extended
period of time, it may switch off to avoid damage through overheating. In this case,
a complete dropout of the stand-alone grid will occur and the loads will no longer be
supplied.
The "Temperature-dependent generator request" function prevents this grid dropout.
Before the Sunny Island 3324/4248 must switch off due to overheating, it can
request a generator start and switches the stand-alone grid to the generator. The
Sunny Island 3324/4248 can now charge the batteries, as long as the temperature
allows this. The generator provides the stand-alone grid and provides the loads with
electrical energy.
The minimum run time and the switch-off conditions for the generator in this menu
match the values for load-dependent generator requests (see section 12.1 "Load-
dependent Generator Request" (Page 111)).
12.3 GenMan
Complex Generator Start: GenMan
The optional GenMan (SMA order number: SI GenMan) allows the Sunny Island
3324/4248 to control generators requiring more than a simple start/stop signal. You
can purchase the GenMan from your local dealer. More information on this SMA
product can be found in the GenMan operating manual.
.
The connection of a generator using GenMan and the Sunny Island 3324/4248 is
described in more detail in section 10 "System Examples" (Page 87).
e.g.
5 status LEDs
configuration
switch,
manual
activation
Signal 1
Signal 2
Signal 3
12 V DC supply voltage
12 V AC
control voltage
Starter battery
Transformer included in delivery GenMan
Request
Status