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7.5
Position Detection with Magnetic Switches
7.5.1 Definition
End position switch
The use of end position switches is highly recommended for operating electric linear drives to prevent mechanical
damage in the end positions. End position switches must be implemented in the NC (normally closed) function so that
any cable breaks can be detected by the controller.
Homing switch
In addition to the end position switches, a homing switch can be used to assign a repeatable zero point to the linear
system. Homing switches are normally implemented in the NO (normally open) function. In this process, the homing
switch must be between the end position switches.
Switch types
The magnetic switches described in the following can be used as switches. The switch function is triggered by the
magnetic package mounted under the carriage. The user can use mechanical switches, proximity sensors etc. in the
same manner.
Setting up switch points
SS
SS
The switch point for the end position switches must be selected on both sides of the linear drive so as to ensure
braking of the payload up to a standstill (depending on the motor system used) within the safety distance and at any
time during operation. Depending on the application, the homing switch can be set up anywhere between the end
position switches. If the switch points are not indicated when ordering, the user must carry out the alignment as well
as the connection of the magnetic switches.
Example: Product code with digit in bold which displays the position of the safety distance
HMRxxxx-xxxx-xxxx2xxxx => 2 = 20 mm safety distance.
ATTENTION
Potential damage to equipment!
Missing or incorrect signals from the end position
switches in the controller.
► Essentially, clamp and set up end switches
before commissioning!
E-
R
E-
R
NOTE
Essentially, the user is responsible for checking each linear
drive for proper setup and the function of the magnetic
switches.
ES
21
EN
SS = Safety Stroke
ES = Effective Stroke
SS
Verfahrweg
E+
ES
SS
E+
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