Installation Manual
–
SDU 404
Page 3
Installation
This chapter covers the installation of
the SDU 404.
General
The SDU 404 is an engine safety
module.
It is primarily designed to be used
together with the Marine Pro Series.
It can be installed separate from the
DCU or in the same cabinet.
The engine shutdown switches shall be
wired to the switch input channels on
the SDU.
The two-wire
SDU Link
shall be
established between the DCU and the
SDU.
LED Overview
Details regarding indicators are
described in the User’s manual but the
illustration and the following table has
a brief description:
LED
Description
Power
Lit when power supply is OK.
Flashing when below the
configurable “very low
threshold”. (Green)
Running
Lit when engine is running.
(Green)
Overspeed
Unacknowledged,
acknowledged or test mode
(Flashing/Red/Green)
Shutdown
Unacknowledged,
acknowledged.
(Flashing/Red)
Shutdown
Override
Lit when active. (Green)
Load
Reduction
Unacknowledged,
acknowledged.
(Flashing/Red)
Config
Unacknowledged,
acknowledged.
(Flashing/Amber)
MPU
MPU connected. (Green)
Unacknowledged,
acknowledged fault.
(Flashing/Amber)
ACK.
Active. (Green)
Unacknowledged,
acknowledged fault.
(Flashing/Amber)
Shutdown
Override
(Switch)
Shutdown override active.
(Green)
Fault (Amber).
SW 1-4
Unacknowledged,
acknowledged
shutdown/load reduction
(Flashing/Red).
Unacknowledged,
acknowledged fault. (Amber)
