Lectrotab Oval SETR-61 Operating Manual page 7

Per the industry standard, set by most U.S. trim tab manufacturers some years ago, the Lectrotab control switches are set up to be
pushed directly according to what the helmsman needs the boat to do. If the bow is high, push the upper portion of both switches to
make the bow go DOWN. If the bow is high on the left, push only the LEFT switch to make the LEFT bow go DOWN. Pressing the
lower part of the rocker switch causes the bow to come up: This is the way the rocker switches, or buttons, on the "Oval" are marked.
Refer to the illustration on page 1. Tab position indicators it is important to know that to make the left bow go down, the right tab
must go down. (Deploying the right tab at the stern causes the right stern to rise and the left bow to lower.) The "Oval" indicators on
the SETR-61 model are opposite from where the tabs are: left indicator, right tab; right indicator left tab. As a result, when the LEFT
or "Port Bow Down" button is pressed, the RIGHT tab goes down and the LEFT indicator depicts this movement.
But some like it different. If the wire pairs from each tab actuator are interchanged, the left button will actuate the left tab and the
right button the right tab, but the indicators will still be opposite the buttons. If the two wires from each actuator are interchanged, the
tabs will go down instead of up when the tabs are turned off, so don't make that change with the "Oval". But in any case, the position
indicators always respond to the opposite buttons and that can't be changed. In summary, we think it's best to leave the "Oval" wired
as presented in these instructions so that, from a safety standpoint, all Lectrotab boats operate the same, and most popular, way.
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 of this allows the Lectrotab indicators to operate without a feedback transducer of any sort;
no additional device is needed inside, or strapped on the outside, of the actuator.
Lectrotab now offers actuators with 4, 6, and 8 second stroke times, so the "Oval" is programmable accordingly. For example, when
using a 4 second stroke time actuator, the 8 LED's which make up each indicator must light up at the rate of 2 per second so that all 8
are lit to show the tab fully down in the 4 seconds it takes the 4 second actuator to lower the tab. All "Ovals" are shipped programmed
for 8 seconds. To change the timing for other stroke times, proceed as follows:
1. Make sure the trim tab main power is ON (see page 3, Terminal 1).
2. Make sure the trim tab switch is OFF. (see page 3, Terminal 3).
3. Press "Port Bow Down" and hold for at least 2 seconds, and then, while continuing to hold "Port Bow Down", turn the trim
tab switch on (see page 3, Terminal 3). Some indicator LED's will begin to flash. Release "Port Bow Down".
4. The number of LED's flashing indicates the timing. For example, if 8 LED's are flashing, the "Oval" is set for 8 seconds for
use with 8 second stroke time actuators, etc.
5. To decrease the timing, press "Starboard Bow Up" and one LED will extinguish each time the LED's blink. To increase the
stroke timing, press "Starboard Bow Down" and one additional LED will come on each time the LED's blink. Make this
adjustment until the number of LED's lit is equal to the trim tab actuator's stroke time in seconds. Choices are from 4 to 12
seconds in 1 second increments. Lectrotab currently offers 4, 6 and 8 seconds actuators.
6. To exit, press and hold "Port Bow Up" for 2 seconds, then release. This will save the setting in permanent memory, and will
not be lost if the main power is turned off. At release, the "Oval" will execute full retraction of the tabs and the indicators
will confirm tabs up with one LED blinking at the top
7. Turn the tab switch off and confirm a full tab retraction sequence, after which the "Oval" will shut down.
Alternative Wiring and Operation
Calibration/Programming
After entering the calibration mode, and after the last button push, if the
exit procedure, item 6, is not done within 90 seconds, the calibration
procedure will be exited with no changes saved.
NOTE
7
Lit # J1107
Revised January 2014