CEA7 CONTROL UNIT ALARMS | PAGE 47
Programmable alarms 6 to 20 can be associated with a time (Alarms table,
parameter 184 —programmable alarm 6—, 187 —programmable alarm 7—…
250 —programmable alarm 20) to delay the moment at which the alarm begins
to conrm the alarm conditions.
Programmable alarms 6 to 20 are set by default (Alarms table, parameters 185
—programmable alarm 6—, 188 —programmable alarm 7—… 251 —
programmable alarm 20) to: Not perform any actions (warning).
Programmable alarms 6 to 20 can be associated with a programmable text that
appears on the display of the visualization module when the active alarm is
detected.
GENSET LOW POWER ALARM (CEA7 VER462).
The CEA7 control unit’s genset low power alarm is associated to the actual meas-
ured power of the genset. The alarm is set off when the power generated by the
genset falls below a programmable percentage (Threshold table, parameter 60)
of the rated kW set (Threshold table, parameter 9) during a programmable inter-
val of time (anti-rebound) (Alarms table, parameter 253).
Detection of the genset low power alarm is set by default (Alarms table, parame-
ter 252) to be activated: From the rated condition of the engine.
The genset power alarm is set by default (Alarms table, parameter 254) to per-
form no action (warning).
User intervention is not required to reset the generator set after a genset low
power alarm has been generated (auto reportable alarm).
CURRENT ASYMMETRY ALARM (CEA7 VER462).
The CEA7 control unit’s current asymmetry alarm is associated to the measured
current in each of the genset’s phases. This alarm only applies to gensets with
more than 1 phase. The alarm is detected when the difference between the cur-
rent generated by the phase with the highest consumption and the phase with
the lowest consumption of the alternator is greater than the value calculated by
the product of the number of genset phases multiplied by a programmable per-
centage (Threshold table, parameter 61) of the maximum current of the genera-
tor set (Threshold table, parameter 7) during a programmable time interval (an-
ti-rebound) (Alarms table, parameter 256).
HIGH TEMPERATURE PT100 PROBE 5 TO 8 LEVEL 2. REQUIRES CCPT100
PROBES MODULE EXPANSION
The CEA7 control unit’s high temperature alarm for PT100 level 2 probes 5 to 8
is associated to the analogue inputs for PT100 temperature of the analogue
input expansion. The high temperature alarm for PT100 probes 5 to 8 is activated
when a higher temperature is detected than the programmed limit (Thresholds
table, parameters 56 to 59). The use of a second temperature level to generate
alarms allows the generation of warnings in advance of the temperature alarm
with management that is independent of the alarm.
Detection of the high temperature alarm for PT100 level 2 probes 5 to 8 is set by
default (Alarms table, parameters 195, 198, 201 and 204) to be activated:
Never.
A high temperature alarm for PT100 level 2 probes 5 to 8 can be associated a
debounce time (Alarms table, parameters 196, 199, 202 and 205) during which
a temperature that is higher than the programmed limit (Thresholds table,
parameters 56 to 59) must be detected.
The high temperature alarm for PT100 level 2 probes 5 to 8 is set by default
(Alarms table, parameters 197, 200, 203 and 206) to perform no action
(warning).
PROGRAMMABLE ALARMS 6 TO 20
The CEA7 control unit’s programmable alarms 6 to 20 are activated associating
the operating mode of the programmable alarms (Settings table, parameter 26
—programmable alarm 6—, 27 —programmable alarm 7—… 40 —
programmable alarm 20—) 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 any of the programmable alarms 6 to 20.
Detection of the programmable alarms 6 to 20 is set by default (Alarms table,
parameters 183 —programmable alarm 6—, 186 —programmable alarm 7—…
249 —programmable alarm 20) to be activated: Never.
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