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NMEA 2000 PGN Information

CCU

Type

PGN

Description

Transmit and 
receive

059392 ISO acknowledgment

059904 ISO request
060928 ISO address claim
126208 NMEA: Command/Request/Acknowledge 

group function

126464 Transmit/Receive PGN list group function
126996 Product information
127257 Transmit/Receive attitude data
127251 Transmit/Receive rate of turn

Transmit only

127250 Vessel heading

Receive only

127258 Magnetic variation
127488 Engine parameters: Rapid update
128259 Water speed
129025 Position: Rapid update
129026 COG & SOG: Rapid update
129283 Cross track error
129284 Navigation data
130306 Wind data

Helm Control

Type

PGN

Description

Transmit and 
receive

059392 ISO acknowledgment

059904 ISO request
060928 ISO address claim
126208 NMEA: Command/Request/Acknowledge 

group function

126464 Transmit/Receive PGN list group function
126996 Product information

Transmit only 128259 Water speed

129025 Position: Rapid update
129026 COG & SOG: Rapid update
129283 Cross track error
129284 Navigation data
129540 GNSS satellites in view
130306 Wind data

Receive only

127245 Rudder data
127250 Vessel heading
127488 Engine parameters: Rapid update
128259 Water speed
129025 Position: Rapid update
129029 GNSS position data
129283 Cross-track error
129284 Navigation data
129285 Navigation: Route/Waypoint information
130306 Wind data
130576 Small craft status

NMEA 0183 Information

When connected to optional NMEA 0183 compatible devices, 

the autopilot uses the following NMEA 0183 sentences.

Type

Sentence

Transmit

hdm

Receive

wpl
gga

Type

Sentence

grme
gsa
gsv
rmc
bod
bwc
dtm
gll
rmb
vhw
mwv
xte

Error and Warning Messages

Error Message

Cause

Autopilot Action

ECU Voltage is Low

The pump supply voltage 
has fallen below 10 Vdc 
for longer than 6 seconds.

• Alarm sounds for 

5 seconds

• Continues in 

normal operation

Autopilot is not 
receiving navigation 
data. Autopilot placed 
in Heading Hold.

The autopilot is no longer 
receiving valid navigation 
data while performing a 
Route To maneuver.
This message also 
appears if navigation is 
stopped on a chartplotter 
before the autopilot is 
disengaged.

• Alarm sounds for 

5 seconds

• Autopilot 

transitions to 
heading hold

Connection with 
Autopilot Lost

The helm control has lost 
connection with the CCU.

N/A

Lost Wind Data 
(sailboat only)

The autopilot is no longer 
receiving valid wind data.

• Alarm sounds for 

5 seconds

• Autopilot 

transitions to 
heading hold

Low GHC

 Supply 

Voltage

The supply voltage level 
has fallen below the value 
specified in the low 
voltage alarm menu.

N/A

Error: ECU High 
Voltage

The pump supply voltage 
has risen above 33.5 Vdc.

• Alarm sounds for 

5 seconds

• The ECU shuts 

down

Error: ECU Voltage 
has Dropped Rapidly

The ECU voltage has 
dropped quickly below 
7.0 Vdc.

• Alarm sounds for 

5 seconds

• The error is 

cleared when the 
ECU voltage 
rises above 
7.3 Vdc.

Error: ECU High 
Temperature

The ECU temperature has 
risen above 100°C 
(212°F ).

• Alarm sounds for 

5 seconds

• The ECU shuts 

down

Error: Lost 
Communication 
Between ECU and 
CCU (when the 
autopilot is engaged)

Communication between 
the CCU and the ECU has 
timed out.

• The helm control 

beeps, and 
autopilot 
transitions to 
standby.

Registering Your Device

Help us better support you by completing our online registration 

today. Keep the original sales receipt, or a photocopy, in a safe 

place.

1

Go to 

garmin.com/express

 .

2

Sign in to your Garmin account.

10

Summary of Contents for REACTOR 40 COMPACT HYDRAULIC

Page 1: ...w or a rotary cutting tool for installing an optional helm control Wire cutters strippers Phillips and flat screwdrivers Cable ties Single Pole Single Throw SPST switch to use as an autopilot bypass when not installing the Shadow Drive valve Waterproof wire connectors wire nuts or heat shrink tubing and a heat gun Marine sealant Marine corrosion inhibitor spray Portable or handheld compass to test...

Page 2: ... if needed The Shadow Drive must be mounted horizontally and as level as possible with cable ties firmly securing it in place The Shadow Drive must be mounted at least 305 mm 12 in away from magnetic materials or devices such as speakers or electric motors The Shadow Drive should be mounted closer to the helm than to the pump The Shadow Drive should be mounted lower than the lowest helm but higher...

Page 3: ...ce To extend this cable use the correct wire gauge Power Cable Extensions page 5 Item Description Important Considerations Ç CCU cable To extend this cable to reach the ECU you may need to use cable extensions sold separately CCU Mounting and Connection Considerations page 1 You must connect this cable to the alarm and the Shadow Drive valve È Pump The pump must be located within 0 5 m 19 in of th...

Page 4: ...A 2000 network You must connect the helm control or compatible Garmin chartplotter and the CCU to a NMEA 2000 network using the included T connectors NMEA 2000 Connection Considerations page 2 If there is not an existing NMEA 2000 network on your boat you can build one using the supplied cables and connectors Building a Basic NMEA 2000 Network for the Autopilot System page 7 Å CCU You can mount th...

Page 5: ... ECU as a template 2 Using a drill bit appropriate for the mounting surface and selected mounting hardware drill the four holes through the mounting surface 3 Secure the ECU to the mounting surface using the selected mounting hardware Connecting the ECU to Power WARNING When connecting the power cable do not remove the in line fuse holder To prevent the possibility of injury or product damage caus...

Page 6: ... the Alarm page 6 If the cable is not long enough extend the appropriate wires with 0 08 mm2 28 AWG wire Installing the Shadow Drive Valve Connecting the Shadow Drive Valve to the Hydraulic System Before you can install the Shadow Drive valve you must select a location at which to connect the Shadow Drive to the hydraulic steering of your boat Shadow Drive Mounting Considerations page 2 For furthe...

Page 7: ...wer cable must be connected to the same ground as the black wire on the NMEA 2000 power cable 3 Connect the NMEA 2000 power cable to one of the T connectors 4 Connect one of the included NMEA 2000 drop cables Ä to one of the T connectors and to the helm control optional or to a compatible Garmin chartplotter Å 5 Connect the other included NMEA 2000 drop cable to the other T connector and to the CC...

Page 8: ...he 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 ...

Page 9: ... NMEA 2000 bus and the NMEA 0183 device to a common ground Specifications Compact Pump Specification Measurement Dimensions H W D 84 6 x 100 3 x 155 3 mm 3 3 4 0 6 1 in Weight 2 2 kg 5 lb Temperature range From 15 to 75 C from 5 to 167 F Material Motor frame Powder coat gloss black Motor end caps Cast aluminum ADC12 Pump body and cap Anodized die cast ADC12 Mounting bracket 304 stainless steel ECU...

Page 10: ... dtm gll rmb vhw mwv xte Error and Warning Messages Error Message Cause Autopilot Action ECU Voltage is Low The pump supply voltage has fallen below 10 Vdc for longer than 6 seconds Alarm sounds for 5 seconds Continues in normal operation Autopilot is not receiving navigation data Autopilot placed in Heading Hold The autopilot is no longer receiving valid navigation data while performing a Route T...

Page 11: ... Europe call 44 0 870 850 1241 2017 Garmin Ltd or its subsidiaries Garmin and the Garmin logo are trademarks of Garmin Ltd or its subsidiaries registered in the USA and other countries Reactor and Shadow Drive are trademarks of Garmin Ltd or its subsidiaries These trademarks may not be used without the express permission of Garmin NMEA NMEA 2000 and the NMEA 2000 logo are trademarks of the Nationa...

Page 12: ......

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