Background Lighting; Nmea 0183 Echo; Alarm Output; Connections - Vetus COMBI4 Manuel D'utilisation Et Instructions D'installation

year on high-speed vessels. Paddlewheels
can fracture and shafts can bend due
to impact with water borne objects and
mishandling in boat yards. O-rings must
be free of abrasions and cuts to ensure
a watertight seal. Order a replacement
sensor.
1 To remove the old paddlewheel shaft,
grasp the end with small diagonal wire
cutters and pull (see figure).
2 Place the new paddlewheel in the cav-
ity with the flat side of the blade facing
the same direction as the arrow on the
top of the insert.
 Tap the new shaft into place until the
end is flush with the outside wall of the
insert.
4 Install a large O-ring near the top of the
insert. Install a small O-ring near the
paddlewheel.
5 Place the remaining two O-rings near
the bottom of the blanking plug.
Winterizing
After the boat has been hauled for winter
storage, remove the blanking plug to let
the water drain away before reinserting it.
This will prevent any water from freezing
around the blanking plug and possibly
cracking it.

5.3 Connections

See Chapter 8 for the wiring diagram.
Connect the sensor cable as shown in the
wiring diagram. If it is necessary to cut the
cable join the cable again by connecting
the same colour cores to each other. This
instrument is suitable for both 12 volt and
24 volt direct current. Connect the power
supply as shown in the wiring diagram.
See Chapter 9 for optional connections.
28
100609.01

5.3.1 Background lighting

The input for the background lighting
is an automatic measurement input that
measures the voltage supplied relative to
the battery voltage. If the battery voltage is
12 V the lighting is at a maximum when the
voltage on pin 2 is also 12 V. If the battery
voltage is 24 V and the voltage on pin 2 is
12 V the lighting will be dimmed.
PIN 2: Dim input for background lighting
(0-12V or 0-24V, automatic control). See
Chapter 9: Options.

5.3.2 NMEA 0183 echo

You can connect other equipment to the
NMEA echo pin that also has to receive
the NMEA messages from the sensor.
PIN 8: NMEA018 output, together with
earthing pin 7 (GND)
See Chapter 9: Options.

5.3.3 Alarm output

An external warning, such as a buzzer, can
be connected to the alarm output. If this
provision uses more than 100 mA connect
a small relay in the circuit.
PIN 12: Alarm output, together with the
battery plus terminal (+). See Chapter 9:
Options.
COMBI 4