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Shaft copying systems


  • SIL3, EN 81-20/21/50
  • Eliminates existing components
  • Reduces total costs
  • Simple integration
  • Safe evaluation
SSI, binary

Product is discontinued

A new / comparable product is available for this product.

Shaft copy system – Realization of elevator and safety functions.

The PSU01 is an SIL3-certified safe system consisting of a sensor (Ants LES01) and an evaluation unit (PSU) for implementing lift and safety functions in accordance with EN81-20/21/50. The Ants LES01 is used to determine the absolute car position 100% slip-free. The PSU evaluates the safe position feedback and triggers the required safety functions via safety relays together with the lift controller. Existing limit switches as well as inspection limit switches can be replaced when the shaft head/pit is shortened. In addition to UCM, numerous other EN81-20/21/50 requirements can also be met. The safe system thus not only saves installation and maintenance time, but above all costs.

Measuring system Shaft copying systems
Dimension 115,6 mm x 96 mm x 30,8 mm
Working temperature -5 °C ... 55 °C
Weight 440 g
Interfaces CANopen-Lift
SSI, binary


  • Secure position detection and evaluation
  • Integrated UCM function
  • Extremely compact
  • SIL3-certified

  • Implementation of lift and safety functions according to EN81-20/-21/-50.
  • Replaces existing components such as limit switches, magnetic flags and door zone magnets
  • Reduces installation and maintenance time
  • Exact car positioning
Data sheet


PDF ∼ 767,9 KB | 02.2019
Operation manual


Multilingual: German, English, English (USA), French, Italian, Spanish
PDF ∼ 2,1 MB | 01.2019

Installation manual

Coded band packaging Ants

Multilingual: Chinese, German, English, French, Italian, Spanish
PDF ∼ 1,1 MB | 04.2019



PDF ∼ 724,2 KB | 01.2019


Cables and connectors

„Do you have technical questions about the linear measurement technology or are you looking for individual solutions? I would be pleased to help you.“

Stefan Schubert
Application support
Stefan Schubert
Head of Application Engineering
+49 7720 3903 35
+49 7720 21564

„We will be pleased to give you information about prices and delivery times. We are looking forward to your inquiry.“

Fritz Kübler GmbH