CEA7 CONTROL UNIT ALARMS | PAGE 34
All alarms except those which are non-programmable, can be congured as
follows:
To be activated:
• Never.
• Always.
• During the start up of the engine.
• From detection that the engine has started.
• From the nominal condition of the engine.
To perform one of the following actions:
• Not perform any actions (warning).
• Stop the engine with cooling of the engine.
• Perform an immediate stop of the engine.
The default conguration of each of the alarms will be highlighted.
6.2 DESCRIPTION OF ALARMS
HIGH WATER TEMPERATURE
The CEA7 control unit's high water temperature alarm is associated with the
digital input specically provided for high water temperature (ATA). The status of
this input must be validated during a time interval (Times table, parameter 17)
for stabilisation (debounce) before generating the high water temperature alarm.
It can be congured as normally open or normally closed (Regulations table,
parameter 7).
Detection of the high water temperature alarm is set by default (Alarms table,
parameter 1) to be activated: Always.
A high water temperature alarm can be associated with a time (Alarms table,
parameter 2) to delay the moment at which the alarm begins to conrm the alarm
conditions.
The high water temperature alarm is set by default (Alarms table, parameter 3) to
always perform an immediate stop of the engine.
6.1.3 NETWORK ALARMS
Tabla 3
Description of the network alarms
Description Type Action
Maximum NETWORK voltage failure Alarm
Checked and if an error is detected the
engine is started.
Minimum NETWORK voltage failure Alarm
Checked and if an error is detected the
engine is started.
Maximum NETWORK frequency failure Alarm
Checked and if an error is detected the
engine is started.
Minimum NETWORK frequency failure Alarm
Checked and if an error is detected the
NETWORK sequence failure Alarm
Checked and if an error is detected the
engine is started.
NETWORK signal drop failure Alarm
Checked and if an error is detected the
engine is started.
CR commutation failure Alarm
Checked and if an error is detected the
engine is started.
CG commutation failure Alarm
Checked and if an error is detected the
engine is stopped with cooling.
6.1.4 ALARMS ASSOCIATED WITH PROGRAMMABLE INPUTS
There are 5 free programmable alarms that can be associated with engine
alarms and they can be reected on the display via LEDS Aux1 and Aux2.
Tabla 4
Description of the alarms associated with programmable inputs
Description Type Action
Associated with programmable inputs Alarm According to conguration.
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