Maintenance - Garmin REACTOR 40 Installation Instructions Manual

2
In the location where you plan to connect the CCU,
disconnect one side of a NMEA 2000 T-connector
the network.
3
If necessary, connect a NMEA 2000 backbone extension
cable (not included) to the side of the disconnected T-
connector to extend the NMEA 2000 network backbone.
4
Add an included T‑connector for the CCU to the NMEA 2000
backbone by connecting it to the side of the disconnected
T‑connector or backbone extension cable.
5
Route the included drop cable
bottom of the T-connector added in step 4.
If the included drop cable is not long enough, you can use a
drop cable up to 6 m (20 ft.) long (not included).
6
Connect the drop cable to the CCU and the T-connector.
7
If needed, repeat steps 2 through 6 for the helm control
(optional) or a compatible Garmin chartplotter.
Connecting Optional NMEA 2000 Devices to the
Autopilot System
You can use advanced features of the autopilot system by
connecting optional NMEA 2000 compatible devices, such as a
wind sensor or a GPS device, to the NMEA 2000 network.
NOTE: You can connect optional devices that are not NMEA
2000 compatible to the helm control through NMEA 0183
(NMEA 0183 Connection Considerations, page
1
Add an additional T-connector (not included) to the NMEA
2000 network.
2 Connect the optional NMEA 2000 device to the T-connector
by following the instructions provided with the device.
Configuration
The autopilot must be configured and tuned to your boat
dynamics. You can use the Dockside Wizard and the Sea Trial
Wizard on the helm control or a compatible Garmin chartplotter
to configure the autopilot.
See the included configuration guide for more information on
configuring the autopilot.

Maintenance

Corrosion Blocker
To ensure the long life of all parts, apply corrosion blocker to the
drive unit at least twice yearly.
A marine-rated corrosion blocker should be applied to the drive
unit after all connections are made.
Appendix
NMEA 0183 Connection Diagrams
The helm control is not included in all autopilot packages. A
helm control must be installed in your autopilot system to
connect NMEA 0183 devices according to these diagrams. If
you install the autopilot without a helm control, all NMEA devices
you plan to use with the autopilot system must be connected to
a compatible Garmin chartplotter on the same NMEA 2000
network as the CCU. See the installation instructions provided
with your chartplotter for NMEA 0183 connection information.
These wiring diagrams are examples of different situations you
may encounter when connecting your NMEA 0183 device to the
helm control.
NMEA 0183 Connection Considerations
• The chartplotter provides one Tx (transmit) port and one Rx
(receive) port.
• Each port has 2 wires, labeled A and B according to the
NMEA 0183 convention. The corresponding A and B wires of
8
to the CCU and to the
8).
NOTICE
each internal port should be connected to the A (+) and B (-)
from wires of the NMEA 0183 device.
• You can connect one NMEA 0183 device to the Rx port to
input data to this chartplotter, and you can connect up to
three NMEA 0183 devices in parallel to the Tx port to receive
data output by this chartplotter.
• See the NMEA 0183 device installation instructions to identify
the transmit (Tx) and receive (Rx) wires.
• You must use 28 AWG, shielded, twisted-pair wiring for
extended runs of wire. Solder all connections and seal them
with heat-shrink tubing.
• Do not connect the NMEA 0183 data wires from this device
to power ground.
• The power cable from the chartplotter and the NMEA 0183
devices must be connected to a common power ground.
• The internal NMEA 0183 ports and communication protocols
are configured on the chartplotter. See the NMEA 0183
section of the chartplotter owner's manual for more
information.
• See the chartplotter owner's manual for a list of the approved
NMEA 0183 sentences that the chartplotter supports.
Two-Way NMEA 0183 Communication
NMEA 2000 network (provides power to the helm control)
12 Vdc power source
Helm control
NMEA 0183 compatible device
Wire Helm Control Wire Color —
Function
N/A
N/A
Blue — Tx/A (+)
White — Tx/B (-)
Brown — Rx/A (+)
Green — Rx/B (-)
NOTE: When connecting a NMEA 0183 device with two
transmitting and two receiving lines, you do not need to connect
the NMEA 2000 bus and the NMEA 0183 device to a common
ground.
Only One Receiving Wire
If your NMEA 0183 compatible device has only one receiving
wire (Rx), you must connect it to the blue wire (Tx/A) from the
helm control, and leave the white wire (Tx/B) from the helm
control unconnected.
NMEA 0183 Compatible
Device Wire Function
Power
NMEA 0183 ground
Rx/A (+)
Rx/B (-)
Tx/A (+)
Tx/B (-)