DSE Model 5520 Automatic Mains Failure Control and Instrumentation System Operators Manual
5520 OPERATING MANUAL ISSUE 1 04/02/05 AM
12
2.4 TEST OPERATION
NOTE:- If a digital input configured to panel lock is active, changing module
modes will not be possible. Viewing the instruments
and event logs
i
is NOT
affected by panel lock. If panel lock is active the Panel lock indicator (if configured)
illuminates.
To initiate a start sequence in
TEST
, press the
pushbutton. When the controller is in the test
mode (indicated by an LED indicator beside the button), pressing the
START
(
I
) button will initiate
the start sequence.
NOTE:- There is no Start Delay in this mode of operation.
If the
pre-heat
output option is selected this timer is then initiated and the auxiliary output selected
is energised.
After the above delay the
Fuel Solenoid (or ECU
output if configured) is energised, then one
second later, the
Starter Motor
is engaged.
NOTE:
-
I
f
t
he
uni
t
has
been
conf
i
gured
f
or
J1939,
compat
i
bl
e
ECU’
s
wi
l
l
recei
ve
the start command via J1939.
The engine is cranked for a pre-set time. If the engine fails to fire during this cranking attempt then
the starter motor is disengaged for the pre-set rest period. Should this sequence continue beyond
the set number of attempts, the start sequence will be terminated and
Fail to Start
will be
displayed.
Alarm
Shutdown
Failed to start
When the engine fires, the starter motor is disengaged and locked out at a pre-set frequency from
the Alternator output. Alternatively, a Magnetic Pickup mounted on the flywheel housing can be
used for speed detection (This is selected by PC using the 5xxx series configuration software).
Rising oil pressure can also be used to disconnect the starter motor, however it cannot be used for
underspeed or overspeed detection.
NOTE:- If the unit has been configured for J1939, speed sensing is via J1939.
After the starter motor has disengaged, the
Safety On
timer is activated, allowing Oil Pressure,
High Engine Temperature, Under-speed, Charge Fail and any delayed Auxiliary fault inputs to
stabilise without triggering the fault.