Sices GC250, Техническое руководство

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138 GC250 Technical Manual EAAM057608EN
Then connect the NO contact of signal A to first configured input and the contact NC of signal
B to second input.
ATTENTION! T
he feature “Loading inhibition” blocks the load connection, even
if the genset has been started automatically for other reasons. To prevent this problem,
use a logic that prevents the activation of this feature if the generator was not started
with the “REMOTE START” feature.
When both signals are inactive, the controller does not receive the remote start request and
remains at rest in AUTO mode. The "Inhibition of supply" contact is skipped.
When signal A activates, both controller inputs will be active. The controller will not
immediately shift to
REMOTE START mode, but will do only after the time set in P.2002 (or
equivalents) is elapsed. So, also in this phase the CHANGE-OVER INHIBITION is skipped. In
this phase, window S.01 shows the remaining time to start-up.
After the time since activation of signal A, the controller shifts to REMOTE START mode and
perform
s the engine start. But in this phase, the “Change-over sequence disabling” input is no
longer skipped, and, being it active (connected on contact NC), it prevents the loads change-
over on generator.
When signal B activates, the “Change-over sequence disabling” input deactivates, thus
allowing the load change-over on generator.
When the mains is on, both signals A and B deactivate. Therefore, the controller reverts to
AUTO mode, due to mains on, performs the engine stop (with cooling cycle).
11.5
The controller can automatically inform the operator about programmed maintenance, by
means of an engine hours counter.
11.5.1 Service hours counter
This function is configurable with parameters P.0424 and P.0425. With P.0424, it is possible
to set extra operation hours for maintenance service. Instead, P.0425 is used to configure
what type of warning should be issued at expiry: a warning, an unloading or an interlock (the
anomaly code is A039 or U039 or W039).
The function is enabled if the parameter P.0424 contains a value other than zero. The count
starts in the moment this parameter is set. When the time configured has elapsed, the
controller stores the status of the service request in the non-volatile memory. In this way, also
powering the controller off, signalling is not lost and cannot be reset. If an alarm has been
selected with P.0425 then the generator cannot be used again. This function allows to manage
rental contracts “by hour number”.
To cancel the maintenance request (and the relevant signal) requires setting again the
parameter P.0424: to disable the function, set the parameter to zero; to set the next
maintenance after the same period as the previous one, simply confirm the existing parameter;
or set a new interval.
Installer level password is required for these parameters.
11.6
The controller manages internally the following counters:
1. Partial active power meter (kWh) (resettable), with power measured when the loads
are connected to the generator; it measures only the supplied power and does not
measure in case of power reverse.