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.
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.
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 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-2XTs. The system states are thereby clearly conveyed to the lift engineer via the FST-2XTs 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.
- SHAFT POSITIONING SYSTEM
The S1 shaft positioning system
replaces the conventional absolute positioning system.
- SPEED MONITORING AND TRIGGERING
The absolute position control of the S1 speed monitoring
enables permanent monitoring in both
directions of travel.
- SHAFT DOOR MONITORING (EMERGENCY RELEASE)
The emergency release is monitored by the S1.
- PROTECTED SPACE MONITORING
The protected space alternative measures are monitored by the
S1. The protective measures are not necessary if a
“pre-triggered stopping system” is used (option).
- INSPECTION END SWITCHES
The need for the classic inspection end switches is
eliminated through the absolute, reliable position control.
- EMERGENCY END SWITCH
The need for the classic emergency end switch is
eliminated through the absolute position control.
- DOOR BYPASS
The car and blocking-agent contacts are bypassed
for “approach and re-levelling with open door” by the S1.
The magnet switches and magnets do not need to be installed.
- LOCKING OF THE INSPECTION DRIVE EQUIPMENT IN ACCORDANCE WITH EN 81-20
Per the requirements of EN81-20, the locking of the
inspection drive equipment of car and pit as well as
priorities for auxiliary mode control and bypass is performed by the S1.
- UCM-A3 DETECTION AND TRIGGERING
No additional UCMA3 sensors
and analysis units need to be mounted; these functions are performed by the S1.
|Dimensions (L x W x H)||134 mm x 134 mm x 220 mm|
|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)||134 mm x 134 mm x 220 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|
|Protection||IP 54 (higher on request)|