3.2. Mounting and connections
3.2.1. Mounting the Speed S400 unit
The Speed unit must be mounted in a visible location and protected from any risk of
shocks. It should be placed more than 10cm from a compass and more than 50cm
from radio or radar antenna, far from all engines, fluorescent light, alternators and
radio or radar transmitters. It should be accessible from the rear; minimum depth
cabin side 50mm. The rear panel of the unit should be protected from humidity. The
mounting surface should be flat and of thickness less than 20mm.
Drill a hole 50mm in diameter at the chosen location
Unscrew the nut located on the rear of the unit
Remove the adhesive protection around the unit
Insert and position the unit in the mounting hole
Screw back the nut
3.2.2 . Description of electrical connections
3.2.2.1. Bus connection
The bus link is provided by a 7-wire shielded cable, arranged as follows:
Red
Black
Orange
Yellow
White
Green
Blue
3.2.2.2. Speed connection
The connection with the speed sensor is provided by a 30 cm shielded cable, fitted
with an 8-pin connector with bayonet locking.
Connector pins:
+12V DC
GND / NMEA (-) Input and Output
bus
NMEA input (+)
NMEA output (+)
Buzzer and external light
NC
1: Bare
2: Red
3: White
4: Brown
5: Yellow
6: Green
7: Bare
8: Colourless
Installation and Operation Manual S400 series
Ground
+12V DC
Thermistor -
Thermistor +
Sensor presence
Paddlewheel
nc
nc
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