
3
Circuit breaker
4
Fuse
Where possible, connect individual items of
equipment to individual circuit breakers. Where this
is not possible, use individual in-line fuses to provide
the necessary protection.
Power and drive cables
Important electrical considerations when planning
cable runs and equipment location.
The amount of electrical current available to the
autopilot system components will be impacted by
the length and gauge of the cables used to connect
all the components. When determining the cable
required for the power and drive connections it is
necessary to consider the
combined
cable length
of both connections.
1.
ACU (Actuator Control Unit)
2.
Power supply / distribution panel
3.
Drive unit
Power and drive cable selection
Drive
Supply
voltage
Max.
length
(A+B)
Cable size
0–7 m
(0–23 ft)
2.5 mm
2
(14 AWG)
Type 0.5
hydraulic
pump
12 V
7–10 m
(23–32.8 ft)
4 mm
2
(12 AWG)
0–7 m
(0–23 ft)
2.5 mm
2
(14 AWG)
• Type 1
drive
• CR pump
(ACU–300
only)
12 V
7–10 m
(23–32.8 ft)
4 mm
2
(12 AWG)
0–5 m
(0–16.4 ft)
6 mm
2
(10 AWG)
12 V
5–7 m
(16.4–23 ft)
10 mm
2
(8 AWG)
0–3 m
(0–9.8 ft)
4 mm
2
(12 AWG)
3–5 m
(9.8–16.4 ft)
6 mm
2
(10 AWG)
Type 2 drive
24 V
5–10 m (16.
4–32.8 ft)
10 mm
2
(8 AWG)
Drive
Supply
voltage
Max.
length
(A+B)
Cable size
12 V
0–5 m
(0–16.4 ft)
10 mm
2
(8 AWG)
0–5 m
(0–16.4 ft)
6 mm
2
(10 AWG)
Type 3 drive
24 V
5–7 m
(16.4–23 ft)
10 mm
2
(8 AWG)
0–7 m
(0–23 ft)
2.5 mm
2
(14 AWG)
Wheel drive
— Sail
12 V
7–10 m
(23–32.8 ft)
4 mm
2
(12 AWG)
0–7 m
(0–23 ft)
2.5 mm
2
(14 AWG)
Wheel drive
— Power
(Sport Drive)
12 V
7–10 m
(23–32.8 ft)
4 mm
2
(12 AWG)
0–7 m
(0–23 ft)
2.5 mm
2
(14 AWG)
Tiller drive
12 V
7–10 m
(23–32.8 ft)
4 mm
2
(12 AWG)
Important:
Use of an incorrect power cable size will reduce
the power supplied to the drive unit and could
cause your autopilot to malfunction. If in doubt,
use a heavier gauge cable. Keep cable runs to a
minimum where possible, and also observe the
guidance provided in the location requirements
section of this document.
Motor (drive) and clutch connection —
ACU-200 and ACU-400
Motor connection
The motor connects to the connection panel of the
ACU.
1.
Clutch (not all motors have this connection)
37