4.3 ACU-100, ACU-150
connections
Connections overview — ACU-100,
ACU-150
1.
SeaTalkng® connection
2.
Rudder reference connection
3.
Power connection
4.
RF Ground connection (drain conductor)
5.
Motor (drive) connection
Making connections
For information on how to connect the various
components of the autopilot system, refer to the
following sections:
•
5.1 EV and ACU installation instructions
•
•
Drive unit installation documents
Power connection — ACU-100,
ACU-150
Power to the ACU-100 and ACU-150 must be from
an appropriately fused and rated supply.
1.
ACU-100, ACU-150 power connection panel
2.
Vessel power distribution panel
Power connection colors
Color
Description
A
Red
Power in Positive (+)
12 V dc
B
Black
Power in Negative (–)
0 V dc
Warning: Positive ground
systems
Do not connect this unit to a system which
has positive grounding.
Fuses and circuit protection
There are 3 levels of power protection in the autopilot
system. The drive (motor) and associated cables
are initially protected by the current sensing and stall
condition detection within the ACU hardware and
software. A second level of protection is provided
to these parts and the ACU components by the
unit's main power fuse. Protection for the entire
autopilot system and its wiring back to the main
power distribution panel is provided by your vessel’s
circuit breaker / fuse.
Power supply circuit protection
Protect the power supply for the Evolution system at
the distribution board with a fuse or circuit breaker
that is suitable for the ACU. For guidance, refer to
main power fuse rating stated on the ACU connector
panel. If in doubt, consult your local dealer.
Internal fuses
The ACU uses standard automotive blade fuses.
Spare fuses are located on the underside of the
removable cover.
Note:
For clarity, only the power and fuse-related
connections are shown in the illustration above.
1.
Power fuse (accessible via the removable cover)
2.
SeaTalkng® fuse (fuse power supply from ACU
to SeaTalkng® backbone)
3.
Power fuse (labelled with total power consumed
by system)
Fuse ratings
SeaTalkng®
3 A
ACU-100
10 A
29