DSE Model 5510 Autostart Control and Instrumentation System Operators Manual
057-015 5510 OPERATING MANUAL ISSUE 11 07/07/09 AM 19
4.2 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.
LOW OIL PRESSURE, if 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, a warning will occur.
Alarm Warning Low Oil Pressure will be displayed.
Alarm
Warning
Low oil pressure
HIGH ENGINE TEMPERATURE, if 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, a warning will occur. Alarm Warning High Coolant Temperature will be displayed.
Alarm
Warning
High coolant temp
OVERSPEED, if the engine speed exceeds the pre-alarm trip a warning is initiated. Alarm Warning
Overspeed will be displayed. It is an immediate warning.
Alarm
Warning
Overspeed
UNDERSPEED, if the engine speed falls below the pre-set pre-alarm after the Safety On timer has
expired, a warning is initiated. Alarm Warning Underspeed will be displayed.
Alarm
Warning
Underspeed
LOSS OF EXCITATION, the module will monitor the KVAr present on the generator. Should this
exceed a pre-set amount of negative Var this indicates a possible loss of excitation on the
alternator. The following alarm will then be generated.
Alarm
Warning
Loss of Excitation
