EAAM057608EN
GC250 Technical Manual 137
DIF.2152
– “Select configuration 2”. When the input becomes "active", parameters of
alternative configuration set 2 are copied in the working configuration.
Remark: copying an alternative set in working configuration causes the lost of
the previous loaded parameters.
The only way to restore them is to have them stored
in another alternative configuration and recall it.
This function is usually used with multiple-voltage and/or multiple-frequency panels: wiring the
cams of a selector to the panel on the inputs of the controller, you can manually switch voltages
and frequency without having to use the parameters of the controller.
INFORMATION!
: parameter change occurs only with engine idle and with the
controller in OFF_RESET.
Among the various parameters used in the alternative configurations, there is also the engine
speed. For some CAN-BUS engines (such as the Volvo engines), the engine speed can be
controlled directly from the controller, by means of the P.0701 parameter (and consequently it
can be done using the alternative configurations). Refer to [4] for gear shift, because the
operation is more complex.
11.4
ATTENTION!
: the controller is unable to directly track EJP information from the
mains. In order to use this function, an external detector should be used. This detector
must provide two output signals coherent with said function.
The EJP function allows to start the engine and warm it before mains failure, so when it will
happen, loads can be immediately changed-over on gen-set, reducing to the minimum the
time the loads remain not supplied.
The system is based on two signals, available through the mains provider:
A. A signal activated well in advance with respect to the mains failure (e.g. approx 30
mins).
B. A signal activated just before mains failure.
We want to start the engine in (a settable) advance in relation to signal B; however, the load
must be taken only when B is active. The controller can perform this operation following the
steps below:
A and B signals must remain active until mains reactivates.
Both signals must be connected to relays with exchanging contacts.
The time between A and B signals activation must be known.
To use this function the controller has to be configured in the following way:
Configure a digital input with feature DIF.2701
– “Remote start request” (in parameter
P.2001 or the equivalents for the other inputs). In addition, this input requires
configuring the engine start-up delay (in seconds, in the parameter P.2002 or
equivalent), since A activates. If, for example, we want to warm the engine for five
minutes and the A signal will activate 30 minutes before B, it will require to set 1500
seconds, i.e. 25 minutes (it is possible to set delays up to 4000 seconds, i.e. 66
minutes).
Configure a second digital input with feature DIF.2502
– “Loading inhibition) (in
parameter P.2004 or the equivalents).
