PI L-417 9025E1 Series, User Manual

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4.3.1 Base Body
The base body is the basis of the positioner. The L-417.xx9025E1 is mounted onto a surface
via the base body (p. 17) .
The base body comprises the following subassembly (subassemblies):
Absolute linear encoder
Absolute encoders supply explicit position information that enables immediate
determination of the position. Therefore, no referencing is necessary when switching on.
The position is measured directly at the motion platform, which minimizes the influence of
mechanical play and deformation when measuring the position.
4.3.2 Drive
The drive generates the force that is required for the dynamics of the L-417.xx9025E1.
Figure 5: Drive with holding brake of the L-417
The drive comprises the following subassembly or subassemblies:
Motor
The motor generates the force required to move the fixed load.
The motor of the L-417.xx9025E1 has a commutation encoder. For information on coding,
refer to
"Commutation Encoder" (p. 35) .
In the case of the L-417.xx9025E1, overheating is prevented using temperature
sensors (p. 33) .
Drive screw
The drive screw converts the rotary motion of the drive to linear motion of the motion
platform.
Rotary encoder
The rotary encoder measures the motor shaft's angle of rotation. This signal can be used by
suitable electronics for commutating the motor .
4.3.3 Holding Brake
For L-417.xx9025E1B models:
The holding brake blocks the drivetrain at rest.
The holding brake is designed for holding only and is not suitable for continuous braking
during operation.
The holding brake blocks in a zero voltage state.
4 PRODUCT DESCRIPTION L417UM0002EN
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10/25/2022
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