Installation & Operating Instructions
1. Application
The LS series actuators are intended for industrial use only and should not be used to lift, support, or otherwise transport people or
loads over people. The actuator is designed for lifting or pushing loads no more than its load rating, on an intermittent basis, not for
applications requiring continuous operation. The actuator is designed for clevis mounting and cannot support side loading of the tubes.
The actuator is not suitable for use in uncovered outdoor locations or areas containing explosive dust, vapors, or gases.
2. Installation
The actuator should be connected with a 10mm (.394”) steel clevis pin at each end. An M10, grade 8.8, DIN 931 cap screw can be
used. Use a screw at least 75mm long to obtain at least 50mm of unthreaded shank.
3. Wiring
All electrical connections are made to the pigtail cable. Refer to the diagrams below for 115 Vac and 12 Vdc models. End of travel limit
switches are internally connected. AC units can be operated with a SPDT-center-off switch. DC units require a DPDT-center-off switch.
AC units must be connected according to local electrical codes, with the green wire grounded.
4. Limit Switch Adjustment
a. Temporarily connect power, per the appropriate wiring diagram. Run actuator in the “Retract” direction until stopped by the limit
switch. Rotate translating tube until the pin-to-pin dimension of the clevis holes match the installed, fully retracted position. Translating
tube should not be fully retracted against internal stop. At least 1/4” of overtravel allowance is recommended.
b. With the translating tube restrained against rotation, run the actuator to the desired extended position.
c. Disconnect power. Remove round limit switch cover.
d. Loosen the flat head screw in the middle of the round plastic cam. Loosen
screw about three turns – complete removal is not required. Rotate the cam
counterclockwise until the limit switch just clicks. Hold the cam in this position
and retighten screw.
e. Restore power and, with the translating tube restrained from rotation, operate
the actuator to check limit switch setting.
f. If settings are correct, disconnect power and reinstall round cover. Note: moving the cam one notch changes limit switch setting
about 4mm (5/32”).
Notes:
1.Exercise care to avoid jamminig the actuator.
2.With no load, some actuator drift is typical. If precise setting is required,
it must be done with the expected operating load.
3.46"
Wire length
2.91"
0.394"
LENGTH(RET)
2"±0.5
0.47"
1.465"
1.77"
STROKE
"
5.998"
1.457"
2.858"
0.79"
0.91"
1.46"
0.98"
6.77"
3.345"
3.74"
0.394
0.98"
BLK
RED
COM
EXT
18AWGX4C
WHT
BLK
RED
GRN
WHT
L.S(NC)
L.S(NC)
CIRCUIT DIAGRAM
GRN
RET
LS25, 26, 28 AC Series
Dimensional/Wiring Drawing
Travel
Retracted Length
GLS1_0807 8/29/07 8:41 AM Page 2
(12 pages)
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