Safe positioning and control system

The FST-S1 safety system is a safe positioning and control system for lift systems. It consists primarily of three components: magnetic tape, position sensor and Safebox S1.

Main features

  • Replaces conventional safety functions
  • Reduces material expenses
  • Reduces installation work
  • Optimal addition to the FST-2 family
  • Operation and diagnostics via FST-2XT/s graphics display
Magnetic tape

The magnetic tape holds the unique position information as a magnetic code. It is mounted free-hanging in the shaft using a mounting kit and guided by means of a plastic guide on the sensor. The measurement is thereby always performed contact-free. The guide serves only to keep the tape within a defined distance to the sensor.

Position sensor

The position sensor is designed for the FST controller and, together with the Safebox S1 analysis unit, forms a complete system that satisfies the safety functions in the lift in accordance with EN 81-20/50 and EN 81-21.

Safebox S1

Safebox S1 is used to monitor the car positions and speed as well as the shaft and car doors. Important safety-relevant requirements in the lift shaft are thereby ensured. Should a failure occur, the safety circuit opens and/or the safety brake is triggered depending on the event. The hardware components, such as relay contacts and microprocessors, are each present twice to ensure redundancy of all functions. The S1 Safebox can be installed in or on the control cabinet as well as in the machine room or in the shaft. The connection is pluggable, thereby enabling a fast, uncomplicated connection. The S1 Safebox is operated/diagnosed via the CAN interface of the FST-2XT/s. The system states are thereby clearly conveyed to the lift engineer via the FST-2XT/s graphic display as a complete or partial representation. Operational instructions and information are communicated via the FST Guide to help ensure understandable and fast commissioning as well as diagnostics of the complete system. The S1 and FST status and error messages are centrally stored in chronological plain text messages in the FST error list. This amalgamation of both systems enables optimum operation, diagnostics and transparency, all from a single source.

Technical data

Dimensions (L x W x H) 134 mm x 134 mm x 220 mm
Connection Pluggable
Operating temperature -10 °C to +70 °C (-25 °C to +85 °C on request)
Cable length 3 m, 5 m (others on request)
Installation location In or on the control cabinet, in the machine room or in the shaft
Protection type IP 54 (higher on request)
Power supply 24 V DC
Dimensions (W/W1 x H) 10 mm/8 mm x 1.35 mm
Operating temperature -20 °C to +70 °C
Protection type Carrier strip made of stainless steel
Dimensions (L x W x H) 58 mm x 50.5 mm x 31 mm
Connection 9-pin SUB-D connector
Operating temperature -10 °C to +70 °C (-20 °C to +75 °C on request)
Cable length 2 m, 5 m (others on request)
Maximum measurement length 262 m
Maximum drive speed 10 m/s
Measurement principle Absolute
Protection type IP 54 (higher on request)

Service & Downloads

Serviceline FST

+49 (0) 89 - 898 66 - 110

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Tutorials & Schulungen

Ein Trainingsvideo für die Montage und Inbetriebnahme unserer FST-2XT-Steuerung finden Sie auf
unserem YouTube-Kanal.

Darüber hinaus bieten wir in regelmäßigen Abständen Schulungen für Montage- und Servicepersonal an. Eine aktuelle Übersicht der Veranstaltungen finden Sie hier.