Sdu (Shutdown Unit) - Volvo Penta D13 Series Operator's Manual

Instruments and Controls
Engine inputs
Switches
(S1-S5)
Sender
(S6)
Speed
sender
(65,66,2)
P0008401
Overview
The SDU has six shutdown channels and one
overspeed shutdown.
S1 – Cooling water temperature
S2 – Lubricating oil pressure, marine gear
S3 – Lubricating oil pressure, engine
S4 – Cooling water pressure
S5 – Oil temperature
S6 – Exhaust temperature
Shutdown reset
Activated shutdown must be reset before engine can
be restarted. Shut down reset button on engine
connection box.
Overspeed shutdown
The overspeed function shuts down the engine in case
of overspeed.
Overspeed test
To test overspeed function push the overspeed test
button (inside the SDU). When pushed the overspeed
limit drops 25%.
38
Control switch inputs
Shutdown
override
(OR)
6x
SDU
(2)
Power supply
(1,2)
Power Module

SDU (Shutdown Unit)

Shutdown
reset
(SR)
NOTICE! The information in this section is only valid
for type approved installations.
Emergency mode (shutdown override)
The system can be overridden by activating the OR
input (the Emergency mode lamp, when installed on
output SL, will be activated). Override does not include
overspeed.
Run detection
To avoid alarms when starting and stopping the engine
an interlock for the shutdown pressure switches (run
detection) is implemented.
Broken wire
All channels are equipped with broken wire detection
that activate an alarm if connection is lost or power
supply to SDU is lost.
Yellow LED indicates broken wire. Reset alarm on
button "Broken wire reset", see SDU control panel.
NOTICE! Only use Volvo Penta tool supplied with SDU
for reset.
47708638 09-2016 © AB VOLVO PENTA
Outputs
Shutdown
fuel valve/stop relay
(82,82,42)
Shutdown override
lamp
(SL,2)
Shutdown alarms
(7,8,9,10,11,12)
Overspeed alarm
(OS)
Broken wire
common alarm
(SF)