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Table of Contents

Introduction…………………………………….…….3

Safety……………………………………………………..3

How Do Trim Tabs Work…………………….…..4

Operational Overview………………………….…5

Control Box Installation………………………….6

Display Panel Installation……………………….6

Wiring Connections……………………………….7

Wiring Diagram……………………………………..8

Control Box Calibration………………………….9

Verify Connection/Operation…….………....9

Automatic Control Setting…………………….10

Adjusting Gain………………………………….……10

Troubleshooting……………………………….……11

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Summary of Contents for ALC-1D

Page 1: ...ual Stations or Dual Actuators per tab ALC 1D and ALC 2D models ELECTROMECHANICAL TRIM TAB SYSTEMS Linear Devices Corporation dba Lectrotab 11126 Air Park Road Suite G Ashland VA 23005 www lectrotab c...

Page 2: ...Tabs Work 4 Operational Overview 5 Control Box Installation 6 Display Panel Installation 6 Wiring Connections 7 Wiring Diagram 8 Control Box Calibration 9 Verify Connection Operation 9 Automatic Cont...

Page 3: ...n a level plane and ensure a comfortable ride If sea conditions change adjustments in boat speed occur or passengers move about the boat the automatic leveling control system utilizes built in sensors...

Page 4: ...er Faster planing can be accomplished by lowering the tabs to the fully deployed position As the boat achieves plane trim tabs may be raised until the boat is level Porpoising Occasionally an uneven l...

Page 5: ...l to actuators and tabs Control adapts to varying sea conditions In calm seas a list condition is corrected faster than in rough seas This allows for faster tab reaction when needed and avoids unneces...

Page 6: ...facing parallel towards the boat s bow A bracket is also provided for floor and overhead mounting so the box will maintain a fore to aft and upright vertical mounted position See diagram below for mo...

Page 7: ...ve wire from the fuse panel to the green 12 pin plug located that will eventually be connected to the black control box A fuse or breaker must be inline with the 12 or 24vdc supply wire to the black c...

Page 8: ...2D For ALC 1D single actuator dual station display or ALC 2D dual actuator single or dual stations 8 Note For ALC 2D dual actuators per tab connect second actuator in parallel with one shown in diagra...

Page 9: ...n and Operation 1 IMPORTANT After calibration verify the connection by pressing the buttons one by one and observing the trim tabs 2 Press and hold the top button Bow Down Both trim tabs should deploy...

Page 10: ...peeds or in turns ALC reverts back to AUTO mode at speeds above planing and once a turn is completed 5 Press the AUTO button to switch between Automatic and Manual modes 6 Display Shut Down When the b...

Page 11: ...between battery negative and primary station keypad red wire 3 Measure voltage at terminal 1 green plug 12 or 24vdc and terminal 2 battery negative for proper voltage see wiring diagram Replace fuse o...

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