Sices HS 315, Техническое руководство

Страница: 195 / 255

Technical Handbook 177
This chapter describes all the anomalies managed by the controller. Some of them act as
protection for the loads, for the generator or for the engine. There is also signalling of specific
events in the plant management. Before describing them in detail, some definitions are
required.
Four types of anomalies are:
•
Warnings : these anomalies do not require shutting the engine down. They point out
to situations that are not dangerous now, but the operator must take some action
because, if ignored, they could degenerate in one of the following categories.
•
Latched warning ; these anomalies are very similar to the previous ones. Their
activation can result in the opening of one or more circuit breakers. On the contrary of
the simple warnings, they require an explicit reset,
•
Deactivations : these anomalies require shutting the engine down. They are
dangerous for the loads but not immediately for the engine. For this reason, the
controller opens immediately the GCB breaker, then it stops the engine with standard
procedure, i.e. with the cooling cycle. However, it is not possible to restart the engine
until the anomaly has not been acknowledged.
•
Alarms : these anomalies require shutting the engine down. They are dangerous for
the loads and/or for the engine and the generator. For this reason, the controller opens
immediately the GCB breaker, and stops the engine immediately with standard
procedure, i.e. without the cooling cycle. It is not possible to restart the engine until
the anomaly is acknowledged.
When an anomaly activates, the controller performs the following:
•
It activates the internal horn and, if configured, also the external one. To that purpose,
in fact, you can configure an output of the controller with the feature DOF.3152
–
“External horn”. The output is controlled together with the inside beeper; the purpose
is that of using a more powerful beeper or a lamp.
•
Prompts the page S.02 ANOMALIES on the multifunction display. This page shows
the numeric code and the current language text related to all active anomalies.
•
It activates the flashing of the “ALARM” indicator light, if the anomaly belongs to the
warnings or latched warnings categories, or it turns it on if the anomaly belongs to the
deactivations or alarms (blocks) categories.
•
If the anomaly is an alarm (block) or a deactivation, the controller disconnects the
generator and stops the engine (with or without the cooling cycle).
•
If the anomaly is a latched warning, it can result in the opening of one or more circuit
breakers.
After an anomaly, the operator has three choices:
•
Silence the horn.
•
Acknowledge the anomaly: means informing the controller that the operator has taken
note of it.
•
Reset: this tells the controller to act as if the anomaly was never active.
The operator can silence the horn:
•
By pressing the ACK/ENTER button.