DSE 560 - Page 13

DSE Model 560 Automatic Start Engine Management and Instrumentation System Operators Manual
560 OPERATING MANUAL ISSUE 5 4/4/02 MR 13
NOTE:-However, during the start-up sequence the overspeed trip logic can be
configured to allow an extra trip level margin, this is used to prevent nuisance tripping on
start-up - Refer to the 808 For Windows™ Software Manual under heading ‘Overspeed
Overshoot’ for details.
UNDERSPEED, if the engine speed falls below the pre-set trip after the Safety On timer has
expired, a shutdown is initiated. The LCD will indicate:-
The COMMON ALARM LED will flash (Red).
GENERATOR HIGH FREQUENCY, if the module detects a generator output frequency in excess
of the pre-set trip a shutdown is initiated. The LCD will indicate:-
The COMMON ALARM LED will flash (Red). Generator High Frequency is not delayed, it is an
immediate shutdown.
GENERATOR LOW FREQUENCY, if the module detects a generator output frequency below the
pre-set trip after the Safety On timer has expired, a shutdown is initiated. The LCD will indicate:-
The COMMON ALARM LED will flash (Red).
GENERATOR HIGH VOLTAGE, if the module detects a generator output voltage in excess of the
pre-set trip a shutdown is initiated. The LCD will indicate:-
V
The COMMON ALARM LED will flash (Red). High voltage is not delayed, it is an immediate
shutdown.
GENERATOR LOW VOLTAGE, if the module detects a generator output voltage below the below
the pre-set trip after the Safety On timer has expired, a shutdown is initiated. The LCD will indicate
V
The COMMON ALARM LED will flash (Red).
OIL PRESSURE SENDER OPEN CIRCUIT, if the module detects a loss of signal from the oil
pressure sender (open circuit) a shutdown is initiated. The LCD will indicate:-
(steady) (and ‘-----‘ on the engine oil pressure instrument), the COMMON ALARM LED will
flash (Red). Sender failure is not delayed, it is an immediate shutdown.
AUXILIARY INPUTS, if an auxiliary input has been configured as a shutdown the appropriate LCD
segment will be displayed:-
!
!!
!
The COMMON ALARM LED will flash (Red).
LOSS OF SPEED SIGNAL, if the speed sensing signal is lost during cranking, a shutdown is
initiated. The LCD will indicate:-
(steady) (and ‘-----‘ on the engine RPM instrument), the COMMON ALARM LED will flash
(Red).
NOTE:- This will only occur if the speed sensing signal is lost during cranking or during
the safety on timer. If the signal is lost during normal operation the Generator will
shutdown with an Under-speed alarm.