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Lit # 4H06 

Revised 8/18/2006 

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Model SETR-50 and SETR-51 

Trim Tab Control 

              

Pictured above is the SETR-50 with black switches on a gray background. The SETR-51 is identical except for the color, wherein it 

has black switches on a black background.  The actual size is about 4” wide, 3 ½” high and ½” deep. 

 

Introduction 

Thanks for your interest in the Lectrotab model SETR-50/51, Sealed Electronic Trim and Retract system, with tab position indication.  
The SETR-50/51 “Oval” is either a stand alone or multi-station, software driven, microprocessor based control, featuring positive 
click switches with integrated LED position indicators, in a single waterproof unit.  The SETR-50/51 “Oval” is unique in that no 
position feedback device is needed in the actuator.  Also unique is the single component design of this control; no other interface box 
or components are required for operation, and all connections are made directly to the back of the control. 

 

SETR-50/51, “Oval” Features 

 

Multi station capable, supporting up to 6 Ovals in the same trim tab system wherein each Oval is a full function control 
with no switchover requirements. 

 

High current outputs; 20 amps for both Port & Starboard actuators. 

 

Mirror operation at all Ovals; simultaneous use at different stations is OK. 

 

Independent control of Starboard and Port actuators. 

 

Eight LED’s, operating sequentially, indicate the position of each tab. 

 

Automatic dimming for night operation, with each Oval dimming independently. 

 

Salt water hose down proof and UV protected. 

 

Ergonomically designed keypad for “Heads Up” operation with tactile feed back switches. 

 

Any Oval can operate as the master control or as a remote; therefore, only one model is required.  Expanding a single 
station system to multi-station is a simple add-on with no changes to the original control. 

Summary of Contents for SETR-50

Page 1: ...s control no other interface box or components are required for operation and all connections are made directly to the back of the control SETR 50 51 Oval Features Multi station capable supporting up to 6 Ovals in the same trim tab system wherein each Oval is a full function control with no switchover requirements High current outputs 20 amps for both Port Starboard actuators Mirror operation at a...

Page 2: ...im control push the bottom of the port switch until the click is felt The starboard tab will retract and the starboard indicator will show the tab position Pushing both buttons simultaneously will retract or deploy both tabs Also the tabs may be simultaneously moved in opposite directions if need be The right indicator will move with the right tab the left indicator moves with the left tab However...

Page 3: ...ound Point 3 Auxiliary or engine gauge or ignition switch See page 6 for more options While the main D C trim tab system power remains on applying power to this point will activate the Oval Denergizing the point will deactivate the Oval leaving a 6 MA standby current flow Provide power to this point with a dedicated switch marked Trim Tabs or use the engine gauge switch The reason for controlling ...

Page 4: ...eeds to be connected to each one from any convenient source to power the tab position indicator LED s and the internal microprocessor Operating current with all at points 1 and 2 LED s lit is 10 milliamps Standby current is about 6 milliamps Early production wires were blue and orange When mixing the two treat brown and orange as the same Always connect blue to blue WARNING Do not make any connect...

Page 5: ... a safety standpoint all Lectrotab boats operate the same and most popular way Calibration Programming Some Background The Oval tab position indicator operates on a time basis With our mechanical approach as opposed to the hydraulic approach the Lectrotab actuator inherently moves the tab at a predictable rate of time so that a simple timer can effectively keep track of tab position The simplicity...

Page 6: ...b retraction but will remain on This feature will accommodate connecting point 3 through a gearshift switch which is open circuit at neutral In this case after the engine is started and put in gear point 3 would be energized readying the Oval for use Then at the end of the trip when the gearshift is returned to neutral or even passed through neutral to reverse the Oval would initiate full tab retr...

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