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INDUSTRIES Elevator Technology Elevator- and safety functions Without intelligent safety gear management

Digital security functions without breaking the system - modernize instead of replace

Not every modernization requires a complete conversion. Replaces door zone monitoring, inspection and emergency limit switches.

In many systems, the safety gear is intact or has already been updated - the cost of a complete replacement, including the braking system, would be disproportionately high. Our solution makes it possible to replace additional mechanical functions such as door zone monitoring, inspection and emergency limit switches with software-based, digital position management. Existing safety functions are retained and supplemented by controller-independent modules that work according to the plug & drive principle.

In this way, elevator and safety functions can be implemented in a modern and standard-compliant manner in accordance with EN 81-20/50 - without changing the existing structure and with a clear step towards full digitalization.
  • Elevator and safety functions according to
  • EN 81-20/-21/-50
  • Elimination of mechanical components
  • Plug & Drive

Digital security functions without breaking the system - modernize instead of replace

Not every modernization requires a complete conversion. Replaces door zone monitoring, inspection and emergency limit switches.

In many systems, the safety gear is intact or has already been updated - the cost of a complete replacement, including the braking system, would be disproportionately high. Our solution makes it possible to replace additional mechanical functions such as door zone monitoring, inspection and emergency limit switches with software-based, digital position management. Existing safety functions are retained and supplemented by controller-independent modules that work according to the plug & drive principle.

In this way, elevator and safety functions can be implemented in a modern and standard-compliant manner in accordance with EN 81-20/50 - without changing the existing structure and with a clear step towards full digitalization.

Elevator and safety functions – reliably realized digitally

Our components are more than just individual parts - they form a digital security architecture that intelligently networks all relevant functions. From the sensor to the evaluation to the catch release, a system is created that not only complies with current standards, but also flexibly maps future requirements.

UCM B
UCM

Unintentional car movement

If the cabin leaves a defined door zone in an uncontrolled manner with the doors open, the safety circuit is opened or the electromechanical safety gear is triggered.

Shelters Mounting Shield Mode E
Shelters Mounting Shield Mode

Shield mode installation ensures a protected space for personnel even before the elevator is put into operation. During installation, such as rail fastening, a protective space is created sequentially according to the installation progress. Depending on the position, the cabin is secured with a tolerance of ± 5 cm.

Absolute position feedback Emergency limit switch F
Absolute position feedback Emergency limit switch

The SIL3-certified measuring system consisting of Sensor Ants LES03 and Codeband determines both absolute position values and the speed of the car without slippage using a non-contact measuring principle. Many functions, such as emergency limit switches, can be implemented using this system.

When mechanics are no longer enough

New TÜV regulations and stricter safety standards present elevator operators with a clear decision: Continue with outdated technology - or take the step into the digital future with Kübler LES03 / PSU03.

Function 1) Standard notes SIL LES03 / PSU03
Safe positioning system with safety catch release		 LES03 / PSU03
Safe positioning system		 LES03 / SGT03
Safety catch release		 LES03 / SGT03
Safety catch release with limit switch and
interlock control
A Self-sufficient system (independent of the elevator control system) No standard reference - ✔ ✔ ✔ ✔
B UCM (Unintentional car movement) EN 81-20: 5.6.7.7 2 ✔ ✔ - -
C Release of safety catch at overspeed EN 81-20: 5.6.2.2.1 a), 5.6.6.10 3 ✔ - ✔ ✔
Monitoring status of safety gear EN 81-20: 5.6.2.1.5 1 ✔ - ✔ ✔
Reset function of the electromechanical safety gear No standard reference 3 ✔ - ✔ ✔
Release of safety catch when car moves upwards EN 81-20: 5.6.6.5 2 ✔ - ✔ ✔
Safety catch triggered by emergency brake switch No standard reference 3 ✔ - ✔ ✔
Safety catch switch that opens the safety circuit EN 81-20: 5.6.2.1.5, 5.6.6.5
EN 81-21: 5.5.2.3.3 f), 5.7.2.3.3 f)		 1
2		 ✔ - ✔ ✔
Monitoring of the electrical reset device EN 81-21: 5.5.3.2, 5.5.3.3 c), 5.7.3.2, 5.7.3.3 c) 2 ✔ - ✔ ✔
Shield mode: Safety release with reduced shaft head/pit to create a personal protection space EN 81-21: 5.5.2.3.1, 5.7.2.3.1 2 ✔ - ✔ ✔
D Shield mode: Creation of protective space during scaffold-free assembly No standard reference 3 ✔ - ✔ ✔
E Absolute position feedback No standard reference 1 ✔ ✔ ✔ ✔
F Emergency limit switch EN 81-20: 5.12.2.3.1 b) 1 ✔ ✔ - ✔
Inspection limit switch with reduced shaft head/pit EN 81-21: 5.5.3.4, 5.7.3.4 2 ✔ - ✔ ✔
Functional safety right from wiring (without presetting) No standard reference 3 ✔ - ✔ ✔
Delay control (with shortened buffer stroke) EN 81-20: 5.12.1.3 3 ✔ ✔ - ✔
Pre-tripping overspeed 115 % (pretripping) EN 81-20: 5.6.2.2.1.6 a) 2 ✔ ✔ ✔ ✔
Monitoring the speed in inspection mode (0.63 m/s) EN 81-20: 5.12.1.5.1 e) - ✔ ✔ ✔ ✔
Secure configuration management for accelerated approvals No standard reference - ✔ ✔ ✔ ✔
Monitoring access to the car roof or shaft pit EN 81-21: 5.5.3.1, 5.7.3.1 3 ✔ ✔ ✔ ✔
Door bridging EN 81-20: 5.12.1.4 a), b), c), 2), d) 2 ✔ ✔ - -
Door zone signaling for emergency release in 12 V emergency power mode No standard reference - ✔ ✔ - -
Buffer batteries for emergency release with power supply unit for ESG no standard reference ✔ - ✔ -

Mechanics are a thing of the past - discover the digital solution

The following components form the core of our solution: they replace door zone monitoring, inspection and emergency limit switches with intelligent, standard-compliant modules. An intact or already updated safety gear remains in place.

Compatible with all electromechanical safety gears from Cobianchi, Dynatech and Wittur.

SIL3 certified sensor for position and speed detection.
SIL3 certified sensor for position and speed detection.
To the LES03
Ensures standard-compliant, fast installation - even for retrofit projects.
Ensures standard-compliant, fast installation - even for retrofit projects.
To the mounting kit
Evaluating the sensor data
Evaluating the sensor data
To the PSU03

Further concepts for our elevator solutions

Implementation of elevator and safety functions with intelligent safety gear management

Learn more

Electronic speed limiter with intelligent safety gear management

Learn more

19.02.2026
∼ 2.872 MB
Brochures Shaft copying systems

Safe shaft copying systems

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                27.02.2026
	            	                            

                ∼ 2.809 MB
	            	                        

            

                
                    Brochures Shaft copying systems 
                
                

	                Shaft copying systems - Sensors                

                	                                        

        

    

    

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