Scania 2.1 - Engine shutdown due to signal from sensor; Relays

Safety device unit
OPM 520 en-GB 31
© Scania CV AB 2018, Sweden
Engine shutdown due to sig-
nal from sensor
If any of the sensors indicates engine shutdown
the safety device unit activates engine shutdown.
Override of engine shutdown
All sensor channels can be configured to disre-
gard the engine shutdown override signal.
Indication
The red Switch LED for the corresponding sen-
sor lights. The red Shutdown LED lights.
Acknowledgement
When engine shutdown has occurred: Acknowl-
edge the engine shutdown with the Acknowledge
button on the safety device unit.
Relays
Relay Description
Shutdown Is activated at all engine shutdowns. Active until the engine has been stopped and the
operator has acknowledged the event.
Crank Cutoff Is activated at a set engine speed, which is normally 400 rpm. Is deactivated when the
safety device unit has obtained a signal that the engine has stopped.
Buzzer Is activated for all new engine shutdowns and faults. Is deactivated when the operator
has acknowledged the event.
Fault Fault indicator, i.e. is activated for all new faults. Is deactivated when the fault has been
acknowledged and has disappeared.
Running Is activated at a set engine speed, which is normally 400 rpm. Is deactivated when the
safety device unit has obtained a signal that the engine has stopped.