3.5 Fuses and circuit protection
Power supply circuit protection
The power supply must be connected using an
appropriately rated and fused switch or thermal breaker.
The drive type determines the rating of the breaker or
fuse required.
Drive unit
Supply
voltage
Fuse
Thermal
over-
current
circuit
breaker
0.5 l
hydraulic
pump
12 V
15 A
10 A
Type 1
(Rotary,
Linear or
Hydraulic)
12 or 24 V
25 A
20 A
12 V
40 A
30 A
Type 2
(Rotary,
Linear or
Hydraulic)
24 V
30 A
30 A
Type 3
(
Hydraulic
linear)
12 V or 24 V
40 A
30 A
I/O
12 V
15 A
10 A
CR pump
(Solenoid)
12 or 24 V
10 A
10 A
Internal fuses
The course computer uses standard automotive blade
fuses. Spare fuses are located on underside of the
removable cover.
Rayma rine
GROUND
P OWER
P OWER
P
O
W
E
R
12V
OFF
ON
24V
FLUXGATE
RUDDER
CLUTCH
FAULT
S LEEP
FAULT
MOTOR
A
B
D11937-1
2
1
3
1.
SeaTalk
ng
fuse. (Fuse power supply from course
computer to SeaTalk
ng
backbone.
2.
SeaTalk fuse. (Fuse power supply from course
computer to connected SeaTalk devices).
3.
Power fuse. (Fuse total power consumed by
system, including the drive unit.)
SeaTalk
ng
SeaTalk
Power
SPX-10
2 A
2 A
15 A
SPX-30
3 A
3 A
40 A
SOX-
SOL
3 A
3 A
15 A
3.6 Grounding
These grounding requirements are applicable for
Raymarine equipment with a dedicated ground terminal.
• The ground terminal must be connected to a common
ground point.
• It is recommended that the common ground point is a
bonded ground, i.e. with the ground point connected
to battery negative, and situated as close as possible
to the battery negative terminal. If a bonded ground
system is not possible, a non-bonded RF ground may
be used.
Bonded ground system (preferred)
D
1
1
9
4
0
-1
2
4
3
1
RF ground system (alternative)
D
1
1
9
4
1
-1
2
4
3
1
1.
Ground terminal. (This may also be labelled as
Ground, or Screen.)
2.
Ground braid.
3.
Bonded (preferred) or non-bonded RF ground.
4.
Power supply or battery.
Cables and connections
21
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