Datasheet

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.
Copyright 2018

Actuonix Motion Devices
Inc.
L12 Specification
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