DCU 205 User’s Manual
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If three start attempts have elapsed without a successful start of the diesel
engine, the AUTOMATIC START FAILED alarm will be activated and the
RESET button lamp will come on to indicate that no further starts can be
made until the operator has pressed the RESET button.
Standby STOP
The engine may be given a delayed stop by applying the DELAYED STOP
signal to terminals no. 21-23. The engine will then run the pre-set
DELAYED STOP time, before the generator circuit breaker disconnect
signal is given to terminals 35-36. The engine will then run at idle for a pre-
set cooling time before finally stopping.
The STOP lamp will remain on as long as the DELAYED STOP signal is
present, to indicate that the engine is in the stop cycle and about to stop.
If AUTOMATIC START and DELAYED STOP are applied simultaneously,
priority is given to AUTOMATIC START.
A relay contact will be closed on Control Unit wire terminals no. 33-34 when
the Unit is on STANDBY and START DISABLED lamp does NOT light up.
These terminals can be used as an indication that the engine is ready for
operation.
4.4.
Manual button
This button is used to get the system out of STANDBY and into MANUAL.
Once this is done, the lamp in the MANUAL area will light up and the
automatic start and delayed stop inputs will be blocked.
4.5.
Reset button
The RESET button is used to reset all alarms and shutdown functions. In
addition, the STOP solenoid holding time will be reset. Alarms with flashing
lamps will stop blinking but remain lit to indicate that the alarm has been
reset but is still present. If the alarm switch is in normal position before
RESET is pressed, the alarm light will turn off. The common alarm relay will
return to normal position.
4.6.
Siren-off button
The internal siren is activated by any alarm or shutdown. The siren is
pulsing if caused by a shutdown situation and continuously if caused by an
alarm.
The siren is turned off using the SIREN OFF button. This however, does
not have any influence on the alarm conditions or relay outputs.
4.7.
Lamp test button
Pressing this button will light all the lamps and activate the siren in the
DCU
205
.
