PI L-412 211E1 Series, User Manual

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4.3 Overview
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Figure 4: Elements of the L-412.xx9211E1[B]
1. Base body
2. Motion platform
3. Drive
4. L-412.xx9211E1B: Holding brake
5. Drive and rotary encoder connector
6. Purge air connector
7. Linear encoder connector
8. Grease nipple for relubricating the drive screw
9. Drag chain
4.3.1 Base Body
The base body is the basis of the positioner. The L-412.xx9211E1 is mounted onto a surface
via the base body (p. 18) .
The base body comprises the following subassembly (subassemblies):
Reference switch
The reference switch (p. 33) is a sensor whose fixed position serves as the reference point
for incremental sensor signals.
Limit switches
The limit switches (p. 34) are sensors at each end of the travel range that enable the
electronics to abort motion in order to prevent the motion platform from colliding with the
mechanical hard stop.
Incremental linear encoder
The L-412.xx9211E1's linear encoder is an incremental sensor: It measures the position of the
motion platform relative to a known reference point. Linear encoders measure the actual
position directly. Therefore, drive errors such as nonlinearity, backlash or elastic deformation
cannot influence position measuring.
4.3.2 Drive
The drive generates the force that is required for the dynamics of the L-412.xx9211E1.
4 PRODUCT DESCRIPTION L412UM0003EN
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10/24/2022
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