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GHP 12 Installation Instructions

 

19

•  If you have a powerboat, select an option:

 

Select 

Low Speed

 or 

High Speed 

and use the arrows on the 

GHC 10 to adjust how tightly the rudder holds the heading 

and makes turns at low speed or high speed.

If you set this value too high, the autopilot may be 

overactive, attempting to constantly adjust the heading at the 

slightest deviation. An overactive autopilot can cause excess 

wear and tear on the drive unit, and drains the battery at a 

faster-than-normal rate.

 

Select 

Low Speed Counter 

or 

High Speed Counter 

to 

adjust how tightly the rudder corrects the turn overshoot. If 

you set this value too high, the autopilot can overshoot the 

turn again when attempting to counter the original turn.

4.  Test the autopilot configuration, and repeat steps 2 and 3 until the 

GHP 12 performance is satisfactory.

Reducing the Risk of ECu Drive Circuit overload

This applies only when the GHP 12 is installed on a power boat.
If you receive an “Error: ECU Drive Circuit Overload. See manual for 

tips on reducing load error” message, use these tips to help reduce the 

load:
•  Ensure the appropriate pump has been correctly installed on your 

boat.

•  If possible, use larger inside diameter hydraulic hoses on your 

steering system.

•  Mount the pump closer to the cylinder to limit the length of the hose 

runs.

•  Eliminate unneeded hydraulic fittings in the hydraulic system.
•  If overloading occurs during the autotune procedure, skip the 

procedure and manually tune the autopilot.

•  Increase the rudder rate limiter setting to slow the fluid rate.
•  Reduce rudder gain to limit pump activity.

adjusting the Rudder Rate Limiter

This applies only when the GHP 12 is installed on a power boat.
If the “ECU Drive Circuit Overload. See manual for tips on reducing 

load error” message continues to appear, you may need to adjust the 

rudder rate limiter.

NOTE

: Complete rudder rate adjustments only at the dock or while 

your boat is not moving.

NOTE

: If you adjust the rudder rate limiter, you must perform the 

autotune procedure.
1.  Enable the advanced configuration procedure (

page 19

).

2.  On the GHC 10, select 

Menu

 > 

Setup 

Dealer Autopilot 

Configuration 

Autopilot Tuning 

Rudder Rate Limiter

.

3.  Select 

Continue

.

Autopilot takes control of the rudder.

4.  Use the arrows on the GHC 10 to adjust the speed of the limiter.

•  0% is the is the default speed for the rudder rate limiter.
•  Lower rudder rate limiter numbers allow the rudder to move 

faster between the right rail and left rail.

•  Lower rudder rate limiter numbers increase the running current. 
•  Higher rudder rate limiter numbers decrease the running current.

5.  Select 

Done

.

6.  Test the rudder rate limiter settings.
7.  Repeat steps 2–6 until rudder rate limiter performance is 

satisfactory.

8.  Perform the autotune procedure. 

advanced Configuration

Advanced configuration options are not available on the GHC 10 under 

normal conditions. To access the advanced configuration settings of the 

GHP 12, enable Dealer Mode.

Enabling Dealer autopilot Configuration

1.  From the heading screen, select 

Menu

 > 

Setup 

System 

System 

Information

.

2.  Press and hold the center soft key 

➊ 

for 5 seconds.

Dealer Mode appears.

3.  Press 

Back

 > 

Back

.

  If the option for Dealer Autopilot Configuration is available on the 

Setup screen, the procedure was successful.

advanced Configuration Settings

You can run the Autotune automated configuration process, calibrate the 

compass, and define north on the GHP 12 through the GHC 10 without 

running the wizards. You can also define each setting individually, 

without running the configuration processes.

Manually Running the automated Configuration 

Procedures

1.  Enable Dealer Mode (

page 19

).

2.  From the Heading screen, select 

Menu

 > 

Setup

 > 

Dealer Autopilot 

Configuration

 > 

Automated Setup

.

3.  Select 

Autotune

Calibrate Compass

, or 

Set North

.

4.  Follow the on-screen instructions (

page 15)

.

Manually Defining Individual Configuration Settings

1.  Enable Dealer Mode (

page 19

).

2.  From the Heading screen, select 

Menu

 > 

Setup

 > 

Dealer Autopilot 

Configuration

.

3.  Select the a setting category.
4.  Select a setting to configure.
  Descriptions of each setting are available in the appendix (

page 25

).

5.  Configure the value of the setting.

NOTE

: Configuring certain settings in the advanced configuration 

procedure may require you to modify other settings. Review the GHP 

12 Configurations Settings section (

page 25

) prior to modifying any 

settings.

Summary of Contents for GHP 12 Autopilot System

Page 1: ...n each component Contacting Garmin Product Support Go to www garmin com support and click Contact Support for in country support information In the USA call 913 397 8200 or 800 800 1020 In the UK call...

Page 2: ...rations 14 Connecting an Optional NMEA 0183 compatible Device to the GHC 10 14 Shadow Drive Installation 14 Connecting the Shadow Drive to the Hydraulics 14 Connecting the Shadow Drive 14 Configuring...

Page 3: ...to the drive unit The ECU controls the drive unit based on information from the CCU The ECU powers both the CCU and the drive unit Serial Number GHC 10 The GHC 10 is the primary interface used to oper...

Page 4: ...e NMEA 2000 network Either connect the CCU and the GHC 10 to an existing NMEA 2000 network using the included T connectors and drop cables use all of the included NMEA 2000 cables and connectors to bu...

Page 5: ...n the location you want to mount the CCU then there is magnetic interference Choose another location and test again The CCU can be mounted below the waterline if it is not in a location where it will...

Page 6: ...fitting at the helm and the Shadow Drive Do not install the Shadow Drive directly to a hydraulic T connector in the hydraulic line Install a length of hose between a T connector and the Shadow Drive...

Page 7: ...ctors page 12 If there is not an existing NMEA 2000 network on your boat you can build one using the supplied cables and connectors page 13 Drive unit The drive unit must be installed by an experience...

Page 8: ...Vdc battery The ECU can connect to a 12 24 Vdc power source The NMEA 2000 power cable must be connected to a 9 16 Vdc power source CCU The CCU must be installed in the front half of the boat no highe...

Page 9: ...he GHP 12 rudder feedback cable not included to your drive unit based on the wire colors and functions defined below Wire Color Function Red Feedback positive Black Feedback negative Yellow Feedback w...

Page 10: ...power cable to a terminal block or other source connect it through a 40 A fuse If you plan to route the ECU through a breaker or a switch near the helm consider using an appropriately sized relay and...

Page 11: ...8 F from 15 C to 70 C Extended exposure to temperatures outside of this range in storage or operating conditions may cause failure of the LCD screen or other components This type of failure and relate...

Page 12: ...d to power Do not connect the included NMEA 2000 power cable to an existing NMEA 2000 network because only one power source should be connected to a NMEA 2000 network You can connect the GHC 10 to the...

Page 13: ...CU Building a Basic NMEA 2000 Network for the GHC 10 and the CCU Notice You must connect the included NMEA 2000 power cable to the boat ignition switch or through another in line switch The GHC 10 wil...

Page 14: ...lor Function Black CCU signal ground Yellow CCU signal Blue Tx A White Tx B Brown Rx A Green Rx B Three examples of various wiring situations are provided in the appendix page 21 3 If necessary use 22...

Page 15: ...rrect drive unit voltage value for your non Garmin drive unit can damage your drive unit NOTE This setting applies only to non Garmin other drive units 1 Consult the manufacturer of your non Garmin dr...

Page 16: ...select the engine or engines to which you connected the tachometer sensor from the CCU For a single engine boat select Tachometer Analog Port or Tachometer Analog Starboard according to how you conne...

Page 17: ...is only applicable to power boats and appears only when GPS is selected as the speed source and Planing Hull is selected as the vessel type 1 Note the speed over ground reading from the instrument on...

Page 18: ...he boat using the autopilot the boat should approach and settle on the desired heading with minimal overshoot and oscillation 3 Select an option If the boat turns too quickly or too sluggishly adjust...

Page 19: ...2 On the GHC 10 select Menu Setup DealerAutopilot Configuration Autopilot Tuning Rudder Rate Limiter 3 Select Continue Autopilot takes control of the rudder 4 Use the arrows on the GHC 10 to adjust t...

Page 20: ...e GHP 12 Use the advanced tuning procedures only if you would like to make slight adjustments to the performance of the drive unit Tuning the Speed on a non Garmin Drive Unit This setting does not app...

Page 21: ...ields for 30 seconds If the power usage field fluctuates then your error tolerance is set too low If the power usage field stays at 0 but the rudder error field shows and unacceptable degree of error...

Page 22: ...one receiving Rx line the NMEA 2000 bus and the NMEA 0183 device must be connected to a common ground Example Three of Three Only One Transmitting Wire If your NMEA 0183 compatible device has only one...

Page 23: ...inum alloy waterproof to IEC 529 IPX7 standards GHC 10 power usage 2 5 W max NMEA 2000 input voltage 9 16 Vdc NMEA 2000 LEN 6 300 mA NMEA 2000 PGN Information CCU Type PGN Description Receive 059392 I...

Page 24: ...ct Information 128259 Water Speed 129025 Position Rapid Update 129026 COG SOG Rapid Update 129283 Cross Track Error 129284 Navigation Data 129540 GNSS Sats in View 130306 Wind Data The GHP 12 and the...

Page 25: ...the arrows to adjust the value Speed Source Setup power boat only Max Speed Allows you to adjust the maximum speed of your boat If the value does not match the value on the GHC 10 use the arrows to ad...

Page 26: ...been set If this value is too high the autopilot will overcompensate for cross track error If this value is too low the autopilot will allow a large long term cross track error Steering System Setup...

Page 27: ...ng System Setup Rudder Sensor Setup Calibrate Rudder Sensor Initiates a procedure which establishes the maximum range of movement of the rudder and calibrates the rudder sensor If an error appears dur...

Page 28: ...iated Would you like to continue The autopilot has detected that the user has attempted to initiate a gybe Sounds alarm GHC10 prompts for user input Selecting Gybe initiates the gybe and selecting Can...

Page 29: ...P 12 Installation Instructions 29 Mounting Templates Use the following mounting templates during the mounting process ECU Mounting Template CCU Mounting Template Up when installing on a vertical surfa...

Page 30: ...30 GHP 12 Installation Instructions This page is intentionally left blank...

Page 31: ...Connect the drive unit to the ECU Mount the CCU page 10 in a location free of magnetic interference Use a handheld compass to test for magnetic interference in the area Mount the CCU in the bracket s...

Page 32: ...bligation to notify any person or organization of such changes or improvements Visit the Garmin Web site www garmin com for current updates and supplemental information concerning the use and operatio...

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