DSE Model 7000 Series Control & Instrumentation System Operators Manual
Part No. 057-074 7000 Series OPERATING MANUAL ISSUE 2 02/05/2008 ADM
59
8.2 ANALOGUE PRE-ALARMS
The following alarms are termed ‘pre-alarms’ as they pre-warn the operator of a potentially more serious alarm
condition. For instance, if the engine temperature rises past the pre alarm level, a warning condition will occur to
notify the operator. If the temperature falls below this level, then the alarm ceases, and the set will continue to run
as normal. However if the temperature continues to rise until the coolant temperature trip point is reached, the
warning is escalated and a high coolant temperature shutdown is initiated.
Example
Alarm 1/1
Oil Pressure Low
Warning
By default, analogue pre alarms are self-resetting when the fault condition is removed. However enabling ‘all
warnings are latched’ will cause warning alarms to latch until reset manually. This is enabled using the 7000 series
configuration suite in conjunction with a compatible PC.
Display
Reason
LOW OIL PRESSURE
The module detects that the engine oil pressure has fallen below the low oil
pressure pre-alarm setting level after the Safety On timer has expired.
ENGINE HIGH TEMPERATURE The module detects that the engine coolant temperature has exceeded the high
engine temperature pre-alarm setting level after the Safety On timer has
expired.
ENGINE LOW TEMPERATURE
The module detects that the engine coolant temperature has fallen below the
high engine temperature pre-alarm setting level.
OVERSPEED
The engine speed has risen above the overspeed pre alarm setting
UNDERSPEED
The engine speed has fallen below the underspeed pre alarm setting
GENERATOR OVER
FREQUENCY
The generator output frequency has risen above the pre-set pre-alarm setting.
GENERATOR UNDER
FREQUENCY
The generator output frequency has fallen below the pre-set pre-alarm setting
after the Safety On timer has expired.
GENERATOR OVER
VOLTAGE
The generator output voltage has risen above the pre-set pre-alarm setting.
GENERATOR UNDER
VOLTAGE
The generator output voltage has fallen below the pre-set pre-alarm setting after
the Safety On timer has expired.
ECU WARNING
The engine ECU has detected a warning alarm and has informed the DSE
module of this situation. The exact error is also indicated on the module’s
display.
If the module is configured for CAN and receives an “error” message from the engine control unit, ‘Can ECU
Warning” is shown on the module’s display and a warning alarm is generated.
8.3 HIGH CURRENT WARNING ALARM
GENERATOR HIGH CURRENT, if the module detects a generator output current in excess of the pre-set trip a
warning alarm initiates. The module shows Alarm Warning High Current. If this high current condition continues for
an excess period, then the alarm escalates to a shutdown condition. For further details of the high current alarm,
please see High Current Shutdown Alarm.
By default, High Current Warning Alarm is self-resetting when the overcurrent condition is removed. However
enabling ‘all warnings are latched’ will cause the alarm to latch until reset manually. This is enabled using the 7000
series configuration suite in conjunction with a compatible PC.
