Overview; Base Body; Drive - PI L-412.039211E0 User Manual

4 PRODUCT DESCRIPTION
4.4

Overview

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Figure 3: Elements of the L-412.xx9211E0

1. Base body

2. Motion platform

3. Drive

4. Drive and rotary encoder connector
5. Purge air connector
6. Linear encoder connector
7. Grease nipple for relubricating the drive screw
4.4.1 Base Body
The base body is the basis of the positioner. The L-412.xx9211E0
via the base body (p.
The base body comprises the following subassembly (subassemblies):
Drive screw
The drive screw converts the rotary motion of the drive to linear motion of the motion
platform.
Reference Point Switch
The reference point switch is a sensor whose fixed position serves as the reference point for
incremental sensor signals.
Limit switches
The limit switches 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
An incremental linear encoder is a sensor that measures the position of the motion platform
incremental to a known reference point. Optical linear encoders measure the actual position
directly. Therefore, errors in the drive, such as nonlinearity, backlash or elastic deformations
cannot influence the measurement of the position.
4.4.2 Drive
The drive generates the torque required for the dynamics of the motion platform.
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L412M0016EN ‒ 3/14/2019
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14).
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is mounted onto a surface
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