Aksa AGM 100, Руководство пользователя

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16
14.1. P 72, Control System
DSE, model 720 module controls generating set system.
Module has been designed to monitor the mains (utility)
supply.
14.1.1. Operation
Manual Mode of Operation
This mode activated by pressing the pushbutton. A
LED indicator beside the button confirms this action.
Press the button to begin the start sequence (There
is no Star t Delay in this mode of operation).
After the fuel solenoid is energized, then the star ter
motor is engaged. The engine is cranked for 10 sec. If
the engine fails to fire during this cranking attempt then
the starter motor is disengaged for 10 sec. This sequence
should continue beyond the 3 cranking attempts, the
start sequence will be terminated and Fail to Start
fault will be displayed. When the engine fires, the
star ter motor is disengaged and locked out. Delayed
alarms (under speed, low oil pressure etc ) will be
monitored
after the end of the Safety On delay.
The gener ator wil l continue to r un on load
regardless of the state of the mains supply.
If Auto mode is selected, and the mains supply is
healthy then the Remote Stop Delay Timer begins,
after which the load is transferred to the mains.
The generator will then run off load allowing the
engine a cooling down period.Selecting stop
de-energises the fuel solenoid, bringing the
generator to a stop.
Automatic Mode of operation
This mode is activated by pressing the push
button. A LED indicator beside the button confirms
this action.
Should the mains (utility) supply fail outside the
configurable limits for longer than the period of
the delay star t timer, the mains healthy indicator
will extinguish.
Additionally, while in AUTO mode , the remote
star t input is monitored. Whether the star t
sequence is initiated by mains failure or by remote
star t input, the following sequence is followed:
To allow for shor t term mains supply transient
conditions or false remote star t signals, the star t
delay timer is initiated. After the Fuel Solenoid is
energized, then 1/2 second later, the star ter motor
is engaged.
The engine is cranked for 10 second.If the engine
fails to fire during this cranking attempt than the
star ter motor is disengaged for 10 second. Should
this sequence continue beyond the 3 cr anking
attempts, the star t sequence will be terminated
and Fail to Star t fault will be displayed.
When the engine fires, the star ter motor is
disengaged and locked out.
Delayed alarms (under speed, low oil pressure
etc) will be monitored after the end of the Safety
On Delay.
If the remote star t is being used and has been
configured to Remote Star t is on load, or the
mains failed, the load will be transferred to the
generator.
On the return of the mains supply, the Stop delay
timer is initiated, once it has timed out, the load
is tr ansfer red back to the mains (utility). The
cooling timer is than initiated, allowing the engine
a cooling down period (180 sec) off load before
shutting down. Once the cooling timer expires
the fuel solenoid is de-ener gised, br inging the
generator to a stop.Selecting Stop de-energises
the fuel solenoid, br inging the gener ator to a
stop.
Test Mode of Operation
This mode is activated by pressing the push
button. A LED indicator beside the button confirms
this action. Press the button to begin the test
sequence . After the Fuel Solenoid is energised,
then 1/2 second later, the Star ter Motor is engaged.
The engine is cranked for 10 second. If the engine
fails to fire during this cranking attempt then the
star ter motor is disengaged for 10 second. Should
this sequence continue beyond the 3 cr anking
attempts, the star t sequence will be terminated
and Fail to Star t fault will be displayed.
When the engine fires, the star ter motor is
disengaged and locked out. Delayed alarms (under
speed, low oil pressure etc) will be monitored
after the end of the Safety On delay. The load
will be transferred to the generator and the set
will r un on load until Auto mode is selected or
Stop is pressed.
Selecting Stop de-energises the fuel solenoid,
bringing the generator to a stop.
Figure 14.1.
DSE model
720 Control
Module