Thomson
Thomson Electrak
®
MD Actuator - Installation Manual - 2020-02
15
4.6.8 Control option LXX
In addition to all of the features included in the EXX version (section 4.6.6), the LXX option allows the
end user to extend, retract or stop the actuator using low current (<22 mA) input signals instead of
switching the polarity of the input power voltage.
It also includes:
• An automatic soft start capability reducing the inrush current (section 4.5.5).
• A “sleep” mode function is activated when no motion is commanded for 15 seconds. In sleep mode
the current draw is less than 1 mA for a 12 Vdc actuator and less the 2 mA for a 24 Vdc actuator. The
sleep mode will exit and return to normal operation when the next move command is received.
• Dynamic braking throughout the entire stroke length whenever a motion command is removed.
Power the actuator by connecting red to + Vdc and black to - Vdc in the power cable. To extend the
actuator apply +Vdc to violet and to retract apply +Vdc to orange in the signal cable while applying -Vdc
to grey.
LXX Control Option Specifications
Input voltage
MD12
MD24
[Vdc]
9 - 16
18 - 32
Max. actuator current draw [A] see product label
Extend / retract input voltage [Vdc]
9 - 32
Extend / retract input current [mA]
6 - 22
F Fuse
S1 Extend switch
S2 Retract switch
not used
not used
not used
- Vdc
red
black
white
blue
orange
violet
brown
grey
red/white
black/white
ext/ret + Vdc