Thomson
Thomson Electrak
®
MD Actuator - Installation Manual - 2020-02
13
not used
4.6.6 Control option EXX
Utilizing the internal control system the actuator will:
• Stop the actuator immeditately at each end of mechanical travel and throughout the stroke anytime
current exceeds a factory preset value for the rated load (over load condition). This value is adjusted
during operation automatically to provide consistent force. Resetting the actuator requires motion in
opposite direction to continue normal operation.
• Stop the actuator when the current move is finished in the situation where voltage or temperature
are outside their normal operating ranges. Once within the normal operating range the actuator will
automatically reset and normal operation can be continued.
Always turn power off to the actuator before working on it to eleminate the risk of the actuator
making unplanned moves after it has carried out the automatic reset.
To extend the actuator apply +Vdc to red and -Vdc to black. To retract apply -Vdc to red and +Vdc to black.
EXX Control Option Specifications
Input voltage
MD12
MD24
[Vdc]
9 - 16
18 - 32
Max. actuator current draw
[A]
see product label
F Fuse
S1 Double pole double throw switch
red
black
white
blue
orange
violet
brown
grey
red/white
black/white
