18
CAMT 20
The upper and the lower end position may be adjusted by
changing the position of the end stops using standard tools:
• 22 mm flat wrench for the front end-stop
• 22 mm tube spanner for the rear end-stop
In case of a system malfunction, when the spindle moves
beyond the end limit switches, the end-stops act as me-
chanical safety end-stops and halt the movement.
When an end-stop hits a fixed surface on the housing or
cover, the external control unit detects the peak of current
that results of this and consequently cuts it off, preventing
the motor from overheating.
WARNING
Safety hazard caused by loosen and stop
The end stops are designed to be adjusted several times.
However, after every adjustment it must be checked that the
torque is still high enough to hold the position.
Minimum torque must be 0,5 Nm.
In case the torque is too low, there is a risk that the end stop
could unintentionally change the position or in the worst case the
rear end stop could drop from the leadsrew. this could lead to
collapse of the actuator.
External control unit
The DC motor is powered via an external control unit
through the connection port. The control unit controls the
running direction of the linear actuator. The 2 motor built-in
hall encoders signals can be accessed by the controller to
enable variable speed control or positioning.
The control unit is also used to provide a soft start/stop
function in order to avoid shocks that could negatively affect
the user experience of the device on which the CAMT is
mounted.
Ultimately, in case of overload, the control limits the current
in order to prevent the motor from overheating and damag-
ing the actuator.
Ewellix advises to use one of the following control units to-
gether with the CAMT actuator:
Control units
SC
U 1
SC
U 5
SC
U 9
VC
U
5
VC
U
8
VC
U
9
*BCU
5
*BCU
8
CAMT
NOTE
In case of use of a third-party control unit, refer to chapter
5.4 Requirements for third party control units (mandatory
in medical applications) (⮑ page 24) and chapter 4.6
Connections (⮑ page 25).
Summary of Contents for CAMT20
Page 1: ...CATEGORY MAX 2 LINES INSTALLATION OPERATION AND MAINTENANCE MANUAL CAMT20 Linear actuator...
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