Data Sheet

ModelSelection

L12optionsareidentifiedaccordingtothefollowingscheme:

L12‐SS‐GG‐VV‐C
feature Options
SS:StrokeLength 10,30,50,100
GG:Gearreduction
ratio(refertoload
curvesabove)
50,100,210
(lowerratiosarefasterbutpush
lessforce,andviceversa)
VV:Voltage 6,12
(DCvolts)
C:Controller SLimitSwitches
PPotentiometerFeedback
IIntegratedController
RRCServoIntegratedController

L12ControllerOptions

OptionS–EndofStrokeLimitSwitches
WIRING:(seelastpageforpinnumbering)
1‐Red–MotorV+
2–Black–MotorV‐(Gnd)

The–Sactuatorshavelimitswitchesthatwillturnoffpowerto
themotorwhentheactuatorreacheswithin0.5mmoftheend

ofstroke.Internaldiodes allow theactuatortoreverse away
from the limit switch.The limit switches cannot be moved
oncetheactuatorismanufactured.Whilevoltageisappliedto
themotor power pins, (1 & 2)the actuator extends.Reverse
the polarity and the actuator retracts. This can be
accomplished manually with a DPDT switch or relay, or using
anH‐Bridgecircuit.The–SmodelcannotbeusedwiththeLAC
controlboard.



OptionP–PotentiometerPositionFeedback
WIRING:(seelastpageforpinnumbering)
1‐Orange–FeedbackPotentiometernegativereferencerail
2‐Purple
–FeedbackPotentiometerwiper
3‐Red
–MotorV+(6Vor12V)
4‐Black–MotorV‐(Ground)
5‐Yellow–FeedbackPotentiometerpositivereferencerail

The–Pactuatorshavenobuiltincontroller,butdoprovidean
analog position feedback signal that can be input to an
external controller.While voltage is applied to the
motor
powerpins,(3&4)theactuatorextends.Reversethepolarity
andtheactuatorretracts.Thiscanbeaccomplishedmanually
with a DPDT switch or relay, or using an H‐Bridge circuit.
Positionoftheactuatorstrokecanbemonitoredbyproviding
anystablelowandhighreferencevoltageon
pins1&5,then
readingthepositionsignalonpin2.Thevoltageonpin2will
vary linearly between the two reference voltages in
proportiontothepositionoftheactuatorstroke.

The L12 –P actuator can be used as a linear servo by
connecting the actuatorto
an external controller such as the
LAC board offered by Firgelli.This control board reads the
position signal from the L12, compares it with your input
controlsignalthencommandstheactuatortomoveviaanon‐
board H‐bridge circuit.The LAC allowsany one of the
following control
inputs:Analog0‐5V or4‐20mA,or Digital 0‐
5VPWM,1‐2msStandardRC,orUSB.TheRCinputeffectively
transforms your L12 into a linear servo, which is a direct
replacement for any  common hobby servo used  in RC toys
androbotics.RefertotheLACdatasheetfor
moredetails.

SpecialNotes:
TheL12–Bcontroloptionhasbeendiscontinuedandreplaced
bythe‐S.The–Sisadirectreplacementrequiringnochanges
toexistinginstallations.
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
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Rev C
Copyright 2016 Firgelli Technologies Inc.