Himoinsa CEM7 - Page 45

CEM7 CONTROL UNIT ALARMS | PAGE 45
PROGRAMMABLE ALARM 1
The CEM7 control unit's programmable alarm 1 is activated associating the
operating mode of the programmable alarms (Settings table, parameter 13) to
one of the general purpose digital inputs (ENT1, ENT2, ENT3, ENT4 or ENT5) or
one of the engine alarm inputs (ATA, BPA or NA) in the J1939 option. The status
of this input must be validated during a time interval (Times table, parameter 19,
20, 22, 23 or 24) for stabilisation (debounce) before generating programmable
alarm 1.
Detection of the programmable alarm 1 is set by default (Alarms table,
parameter 79) to never be activated: Programmable alarm 1 can be associated
with a time (Alarms table, parameter 80) to delay the moment at which the alarm
begins to conrm the alarm conditions.
Detection of the programmable alarm 1 is set by default (Alarms table,
parameter 81) to perform one of the following actions: Not perform any actions
(warning). Programmable alarm 1 can be associated with a programmable text
that appears on the display of the display module when the active alarm is
detected.
PROGRAMMABLE ALARM 2
The CEM7 control unit's programmable alarm 2 is activated associating the
operating mode of the programmable alarms (Settings table, parameter 14) to
one of the general purpose digital inputs (ENT1, ENT2, ENT3, ENT4 or ENT5) or
one of the engine alarm inputs (ATA, BPA or NA) in the J1939 option. The status
of this input must be validated during a time interval (Times table, parameter 19,
20, 22, 23 or 24) for stabilisation (debounce) before generating programmable
alarm 2.
Detection of the programmable alarm 2 is set by default (Alarms table,
parameter 82) to be activated: Never.
Programmable alarm 2 can be associated with a time (Alarms table,
parameter 83) to delay the moment at which the alarm begins to conrm the
alarm conditions. Programmable alarm 2 is set by default (Alarms table,
parameter 84) to perform no action (warning).
Programmable alarm 2 can be associated with a programmable text that appears
on the display of the display module when the active alarm is detected.
LOW ENGINE TEMPERATURE
The CEM7 control unit's low engine temperature alarm is associated with the
analogue input for the water temperature (T). The low engine temperature alarm
is activated when a lower temperature is detected than the programmed limit
(Thresholds table, parameter 28).
Detection of the low engine temperature alarm is set by default (Alarms table,
parameter 73) to be activated: Never.
A low engine temperature alarm can be associated a debounce time (Alarms
table, parameter 74) during which it must be detected that the engine
temperature is below the limit set (Thresholds table, parameter 28).
The low engine temperature alarm can be congured (Alarms table, parameter 75)
to not activate the genset contactor (CG) until the engine does not exceed the
programmed low temperature limit (Thresholds table, parameter 28).
GENSET SIGNAL FAILURE
The CEM7 control unit's genset failure signal alarm is generated if no genset
voltage is detected during any phase while the engine is running.
Detection of the genset failure signal alarm is set by default (Alarms table,
parameter 76) to be activated under nominal engine conditions.
A genset failure signal alarm can be associated a debounce time (Alarms table,
parameter 77) during which no signal must be detected during any phase before
activating the alarm.
The genset failure signal alarm is set by default (Alarms table, parameter 78) to
always perform a stop of the engine with cooling.
COMMUNICATION FAILURE SWITCHING CONTROLLER
The switching communitacion controller alarm of the CEM7 is generated if the
communication to the switching controller is lost.
Detection os the switching communitacion controller alarm is set by default
(Alarms table, parameter 13) to be activated: Always.
A time period can be congured to detect the communications failure (Alarms
table, parameter 14).During this period of time, the switching communication
controller must be without communications in order to generate this alarm.