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SECTION 4

ACTIVATING AND DEACTIVATING THE AUTO TAB CONTROL

The ATC system is activated by pressing the ON/OFF button for 2-3 seconds.  

When the button is released, the red ON/OFF LED lights up indicating the unit 

is operating. Once activated, the ATC continuously analyzes and calculates the 

attitude of your boat and directs messages to operate the trim tabs.

The ATC continues to make corrections as necessary until deactivated. 

The yellow LED “arrows” on the Keypad flash, indicating direction of trim tab 

movement. Example: When the bottom direction arrow marked PORT TAB 

 

flashes, the port trim tab is deflecting downward. Conversely, when the top 

direction arrow flashes, the port trim tab is retracting. The same is true for the 

starboard trim tab direction arrows. 

When one or both of the ATC Keypad’s trim tab direction arrows remains in the 

on mode, the ATC has determined one or more of the trim tabs has reached a 

limit. Unit resumes operation once the boat’s attitude changes.

ONCE ACTIVATED, THE ATC SYSTEM ADJUSTS THE TRIM TABS  

AUTOMATICALLY UNTIL YOU DEACTIVATE IT BY EITHER:

1. PRESSING THE ATC KEYPAD’S ON/OFF BUTTON (Recommended method)
2. PRESSING ANY POSITION OF THE TRIM TAB HELM CONTROL 

OR

3. CUTTING THE POWER SOURCE TO THE ATC SYSTEM

SECTION 5

SAFETY PRECAUTIONS AND INFORMATION

For bow high attitude, the ATC system should be deactivated and the trim    

 

• 

tabs manually placed in the full-up position when running in a following sea.

For bow high attitude, the ATC system should be deactivated and the trim    

 

• 

tabs manually placed in the full-up position when running an inlet.

The boat must be properly trimmed when the ATC Zero Point is set.

• 

The ATC system is programmed not to activate during sharp turns.

• 

Speed, load, and trim tab size may be such that the ATC and trim tabs are  

• 

  unable to trim the boat at certain speeds.

Occasionally check for loose or corroded wiring connections on the ATC 

• 

  system and trim tab system and lubricate when necessary.

To avoid component damage, when power is “ON” do not connect or disconnect any   

• 

  plugs connected into the Control Unit or any other component of the system.

Take immediate action to correct any malfunction or failure of your trim tabs.

• 

Improper use of the ATC system or trim tabs can cause an accident or injury.

 

• 

6

This pdf was downloaded from 

MarineSupplyDock.com

Summary of Contents for AUTO TAB CONTROL

Page 1: ...T This manual contains critical information directly affecting the safe and efficient operation of your boat Please read thoroughly before operating the Auto Tab Control system SAVE AND KEEP WITH BOAT...

Page 2: ...OFF and set the Zero Point for your boat s best running attitude The up and down arrows will flash showing trim tab adjust ments B ATC Control Unit The ATC Control Unit is a sophisticated processor a...

Page 3: ...harness leading to the back of the trim tab helm control is wired as follows For Single Lever and Rocker Switch Controls Notice the indented letters on the back of the control make sure connections ar...

Page 4: ...G THE AUTO TAB CONTROL FOR THE FIRST TIME How to Set the Zero Point IMPORTANT NOTE The ATC won t turn on or function correctly until you ve set the Zero Point If the Zero Point has not been set the bl...

Page 5: ...the brightness of the ATC LEDs using the Sun and Moon buttons for different times of day or night These buttons are also used for setting the Zero Point Optimal Running Attitude A good way to reveal y...

Page 6: ...EACTIVATE IT BY EITHER 1 PRESSING THE ATC KEYPAD S ON OFF BUTTON Recommended method 2 PRESSING ANY POSITION OF THE TRIM TAB HELM CONTROL OR 3 CUTTING THE POWER SOURCE TO THE ATC SYSTEM SECTION 5 SAFET...

Page 7: ...ightly higher 3 All LEDs on the ATC Keypad flash simultaneously Control Unit signal is interrupted Check Keypad cable for breaks and check firmness of connection into ATC Control Unit 4 SET ZERO light...

Page 8: ...at is free of excessive vibration Dry Environment Mount the Control Unit in a dry location Level Surface Mount the Control Unit on a relatively level surface It is not necessary to mount the Control U...

Page 9: ...ail Connect the orange wire to a 12 volt positive power source that is switched on with the ignition Connect the black wire to ground Do not plug the ATC Power Pigtail into the Control Unit yet Step 4...

Page 10: ...nnector coming out of the Relay Module Attach the black wire of the Relay Module Power Connectors to ground or to the ground stud on the back of the HPU motor and the orange wire with the in line 20 a...

Page 11: ...re Harness to the desired length and strip the wire ends Strip approximately 3 16ths of an inch on each wire Crimp the butt splices on the Pigtail for Wire Harness PT109 onto the Wire Harness matching...

Page 12: ...t RM12 or RM24 8 ATC Hardware Bag AC3200 System Schematic and Parts List for Non Electronic Trim Tab Controls Wire Harness Existing Control Existing Hydraulic Power Unit Existing 7 6 5 Optional Upper...

Page 13: ...Unit Existing Description Part 1 ATC Keypad AC3250 2 ATC 6 Keypad Cable AC32506 3 ATC Control Unit AC3400 4 ATC Power Pigtail AC3121 5 Pigtail for Wire Harness PT109 6 25 Wire Harness WH100025 7 ATC...

Page 14: ...on of the Bennett Auto Tab Control please contact us at Bennett Marine Inc 550 Jim Moran Blvd Deerfield Beach FL 33442 Phone 954 427 1400 Email info BennettTrimTabs com Web www BennettTrimTabs com 14...

Page 15: ...15 7 3 02817 1 7 03 7 This pdf was downloaded from MarineSupplyDock com...

Page 16: ...ATC20 P ATC X This pdf was downloaded from MarineSupplyDock com...

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