Himoinsa CEM7 - Page 38

CEM7 CONTROL UNIT ALARMS | PAGE 38
It can be congured 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 conrm 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.
NOTE
In the J1939 option the ATA input can be assigned to a programmable alarm. In
this case, the alarm detection is performed by the engine's CIU and transmitted
by the communication bus J1939.
LOW OIL PRESSURE
The CEM7 control unit's low oil pressure alarm is associated with the digital
input specically for the low oil pressure (BPA) or errors detected by the engine's
CIU (only J1939 option). The status of this input must be validated during a time
interval (Times table, parameter 16) for stabilisation (debounce) before
generating the low oil pressure alarm.
It can be congured as normally open or normally closed (Regulations table,
parameter 6).
The low oil pressure alarm is set by default (Alarms table, parameter 4) to be
activated when it is detected that the engine has been started.
A low oil pressure alarm can be associated with a time (Alarms table,
parameter 5) to delay the moment at which the alarm begins to conrm the alarm
conditions.
The low oil pressure alarm is set by default (Alarms table, parameter 6) to always
perform an immediate stop of the engine.
6.1.3 ALARMS ASSOCIATED WITH PROGRAMMABLE INPUTS
There are 20 free programmable alarms that can be associated with engine
alarms and they can be reected on the display via LEDS Aux1 and Aux2.
6.2 DESCRIPTION OF THE ALARMS
Tabla 3
Description of the alarms associated with programmable inputs
Description Type Action
Associated with programmable inputs Alarm According to conguration.
Conrmation of Contactor Alarm Engine stopped.
All alarms except those which are non-programmable, can be congured 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 conguration of each of the alarms will be highlighted.
HIGH WATER TEMPERATURE
The CEM7 control unit's high water temperature alarm is associated with the
digital input specically for the high water temperature (ATA) or errors detected by
the engine's CIU (only J1939 option). 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.