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Navico NAC-2, Commissioning Manual

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Compliance statements

Europe

Navico declare under our sole responsibility that the product
conforms with the requirements of:

•

CE under EMC Directive 2014/30/EU

The relevant declarations of conformity are available in the
product's section at:

•

www.lowrance.com 

•

www.simrad-yachting.com

•

www.bandg.com

United Kingdom

Navico declare under our sole responsibility that the product
conforms with the requirements of:

•

UKCA under the Electromagnetic Compatibility Regulations 2016.

The relevant declarations of conformity are available in the
product's section at:

•

www.lowrance.com 

•

www.simrad-yachting.com

•

www.bandg.com

United States of America

 Warning: 

The user is cautioned that any changes or

modifications not expressly approved by the party
responsible for compliance could void the user’s
authority to operate the equipment.

Australia and New Zealand

Navico declare under our sole responsibility that the product
conforms with the requirements of:

4

Preface

 | NAC-2/NAC-3 Commissioning Manual

Summary of Contents for NAC-2

Page 1: ...ENGLISH NAC 2 NAC 3 Commissioning Manual www lowrance com www simrad yachting com www bandg com...

Page 2: ......

Page 3: ...VIOLATE THE LAW This manual represents the product as at the time of printing Navico Holding AS and its subsidiaries branches and affiliates reserve the right to make changes to specifications withou...

Page 4: ...requirements of UKCA under the Electromagnetic Compatibility Regulations 2016 The relevant declarations of conformity are available in the product s section at www lowrance com www simrad yachting co...

Page 5: ...trademark of Navico Holding AS Live is a trademark of Navico Holding AS NAC is a trademark of Navico Holding AS NEON is a trademark of Navico Holding AS NMEA and NMEA 2000 are trademarks of the Natio...

Page 6: ...d carefully to prevent risk of injury and or damage to equipment personnel Translated manuals Available translated versions of this manual can be found on the following website www simrad yachting com...

Page 7: ...characteristics 15 Drive configuration 18 Rudder setup 21 Sea trial 21 Compass setup 22 Transition speed 23 Set rudder zero position 23 Set turn rate 24 Tuning the autopilot 28 User settings 28 Steeri...

Page 8: ...37 Resetting the autopilot computer 39 Technical specifications 39 NAC 2 40 NAC 3 8 Contents NAC 2 NAC 3 Commissioning Manual...

Page 9: ...ays MFD and autopilot controllers AP44 or AP48 This manual shows screen examples from both an MFD running NOS software and the AP48 MFDs running NOS software and autopilot controller displays The inst...

Page 10: ...systems including only an autopilot remote controller without display unit do not have access to turn patterns Autopilot computer setup When the autopilot installation is completed the setup of the au...

Page 11: ...an be a key on the autopilot controller on an autopilot remote controller or it can be a separate standby key Warning When the autopilot is delivered from factory and any time after an autopilot reset...

Page 12: ...Installation setup workflow 12 Introduction NAC 2 NAC 3 Commissioning Manual...

Page 13: ...tically You can let the system automatically select your sources or set up each source manually Refer to documentation for the autopilot controller or for the display unit for details about how to per...

Page 14: ...ontroller SteadySteer Select this mode if you have a SteadySteer connected to your NAC 2 NAC 3 Manual steering overrides the active mode If Auto mode or NoDrift mode was active before going into manua...

Page 15: ...g parameters Cruising speed Used if no speed info is available It is used by the autopilot system to calculate steering parameters Drive configuration The drive configuration controls how the autopilo...

Page 16: ...trolling the rudder In standby the clutch is released to allow manual steering Check specification of your drive unit to determine whether clutch is required Auto Output activated when autopilot compu...

Page 17: ...sly operative It will also optimize the deadband to the pressure on the rudder Manual If the Auto setting doesn t perform properly due to extreme rudder speed and or overshoot it can be adjusted manua...

Page 18: ...dder commands Stand clear of the helm and do not attempt to take manual control of the rudder during this test Rudder source The correct rudder source has to be selected before the rudder feedback cal...

Page 19: ...ces the rudder speed if it exceeds the maximum preferred speed for autopilot operation Note If the boat uses power assisted steering it is important that the engine or electric motor used to enable th...

Page 20: ...e VRF calibration you must be able to view the movement of the rudder Follow the on screen guided steps until the VRF calibration is completed Note When you get asked if the rudder moved you may have...

Page 21: ...med in calm conditions in open waters and at a safe distance from other traffic Compass setup To achieve the best possible performance the compass should be calibrated and any offsets should be compen...

Page 22: ...to exhibit different steering characteristics at different speeds You may also have different preferences about the steering performance of your boat required at low and high speeds It is recommended...

Page 23: ...and or current Bring the rudder to the position where the boat steers straight then activate the Set rudder zero option to save the rudder zero parameter Note On dual engine boats verify that the eng...

Page 24: ...oot See Rudder gain on page 26 and Counterrudder on page 26 If the autopilot is not keeping the heading satisfactorily or not making the turns satisfactorily you may now either try the Autotune functi...

Page 25: ...y adjust the steering parameters after running the autotune Manual tuning Rudder gain and Counter rudder can be manually adjusted Stabilize the vessel on a heading and set the speed in the middle of t...

Page 26: ...ill increase and the steering will be unstable A B A The value is set too high Steering becomes unstable and often the overshoot will increase B The value is set too low It will take a long time to co...

Page 27: ...too low overshoot response B Counter rudder value is too high sluggish and creeping response C Correct setting of Counter rudder ideal response Perform various course changes and observe how the boat...

Page 28: ...rudder see Ruddergain on page 26 and Counterrudder on page 26 Turn rate Used for manually setting the turn rate used when the heading change is larger than 5 Autotrim Controls how fast the autopilot w...

Page 29: ...eer towards the active route s leg Track approach angle This setting is a limit to prevent approaching the track too steeply Approaching the track at shallower angles is permitted depending on the cro...

Page 30: ...ta are available and or deemed unreliable a manual value for speed can be entered and used by the autopilot to aid steering calculations Turn pattern settings The autopilot computer supports a number...

Page 31: ...ers include turn pattern steering Refer to your autopilot controller for more information C turn Continuous turn Steers the vessel in a circle Turn variable Rate of turn Increasing the value makes the...

Page 32: ...ius while positive values indicate increasing radius Note This turn pattern is not available for HDS Live multi function displays Zigzag turn Steers the vessel in a zigzag pattern Turn variables Cours...

Page 33: ...the value is set too high the overshoot will increase and the steering will be unstable CCA The CCA is an angle that is added to or subtracted from the set course With this parameter you can make the...

Page 34: ...according to instructions Installation instructions for the units Network powered and terminated according to instructions Wiring instructions for the units Sources selected Autopilot control unit do...

Page 35: ...eadband Manual deadband Minimum output Maximum output Sailing parameters Settings Wind mode Tack time Tack angle Manual speed Steering profiles Settings Low Speed High Speed Turn Rate Rudder gain Coun...

Page 36: ...e change confirm angle Turn Pattern settings Settings Continuous Rate of turn Spiral Initial radius Change turn Zigzag Course change Leg distance Square Leg distance Lazy S Course change Turn radius D...

Page 37: ...th a lock ensure that it is in the correct position Software update You can update the software for the autopilot computer from a display unit connected to the network You can check the autopilot comp...

Page 38: ...is started after reset it will run through the automatic setup procedure Note Unless you need to clear all values set during the installation set up procedure you should not perform a reset of the au...

Page 39: ...ator See pump motor power ratings Recommended fuse rating 20 A Environmental Operating temperature 25 C to 55 C 13 F to 131 F Storage temperature 30 C to 70 C 22 F to 158 F Waterproof rating IPx5 Humi...

Page 40: ...torage temperature 30 70 C 22 F 158 F Waterproof rating IPx5 Humidity 100 Shock and vibration Acc to EN60945 Connectivity NMEA 2000 1 Micro C port 1 LEN NMEA 0183 1 port IN OUT 4 8 9 6 19 2 38 4 kbaud...

Page 41: ...ut High Low mode indicator signal Mode External open close or pulse contact for autopilot disengage Alarm External alarm output for buzzer relay Max 100 mA voltage level as local supply Physical Weigh...

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Page 44: ...988 11233 004...

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