Garmin GHP 12 Autopilot System Installation Instructions Manual

Also see for GHP 12: Reference guide

Garmin GHP 12 Autopilot System Installation Instructions Manual Manual pdf 19 page image

GHP 12 Installation Instructions 19• If you have a powerboat, select an option:◦ Select Low Speed or High Speed and use the arrows on theGHC 10 to adjust how tightly the rudder holds the headingand makes turns at low speed or high speed.If you set this value too high, the autopilot may beoveractive, attempting to constantly adjust the heading at theslightest deviation. An overactive autopilot can cause excesswear and tear on the drive unit, and drains the battery at afaster-than-normal rate.◦ Select Low Speed Counter or High Speed Counter toadjust how tightly the rudder corrects the turn overshoot. Ifyou set this value too high, the autopilot can overshoot theturn again when attempting to counter the original turn.4. Test the autopilot configuration, and repeat steps 2 and 3 until theGHP 12 performance is satisfactory.Reducing the Risk of ECu Drive Circuit overloadThis applies only when the GHP 12 is installed on a power boat.If you receive an “Error: ECU Drive Circuit Overload. See manual fortips on reducing load error” message, use these tips to help reduce theload:• Ensure the appropriate pump has been correctly installed on yourboat.• If possible, use larger inside diameter hydraulic hoses on yoursteering system.• Mount the pump closer to the cylinder to limit the length of the hoseruns.• Eliminate unneeded hydraulic fittings in the hydraulic system.• If overloading occurs during the autotune procedure, skip theprocedure 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 LimiterThis applies only when the GHP 12 is installed on a power boat.If the “ECU Drive Circuit Overload. See manual for tips on reducingload error” message continues to appear, you may need to adjust therudder rate limiter.NOTE: Complete rudder rate adjustments only at the dock or whileyour boat is not moving.NOTE: If you adjust the rudder rate limiter, you must perform theautotune procedure.1. Enable the advanced configuration procedure (page 19).2. On the GHC 10, select Menu > Setup > Dealer AutopilotConfiguration > 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 movefaster 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 issatisfactory.8. Perform the autotune procedure.advanced ConfigurationAdvanced configuration options are not available on the GHC 10 undernormal conditions. To access the advanced configuration settings of theGHP 12, enable Dealer Mode.Enabling Dealer autopilot Configuration1. From the heading screen, select Menu > Setup > System > SystemInformation.2. Press and hold the center soft key ➊ for 5 seconds.Dealer Mode appears.➊3. Press Back > Back.If the option for Dealer Autopilot Configuration is available on theSetup screen, the procedure was successful.advanced Configuration SettingsYou can run the Autotune automated configuration process, calibrate thecompass, and define north on the GHP 12 through the GHC 10 withoutrunning the wizards. You can also define each setting individually,without running the configuration processes.Manually Running the automated ConfigurationProcedures1. Enable Dealer Mode (page 19).2. From the Heading screen, select Menu > Setup > Dealer AutopilotConfiguration > Automated Setup.3. Select Autotune, Calibrate Compass, or Set North.4. Follow the on-screen instructions (page 15).Manually Defining Individual Configuration Settings1. Enable Dealer Mode (page 19).2. From the Heading screen, select Menu > Setup > Dealer AutopilotConfiguration.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 configurationprocedure may require you to modify other settings. Review the GHP12 Configurations Settings section (page 25) prior to modifying anysettings.