Due to a technical problem, our website is only available to a limited extent. This also affects our download service area. We are already working on the solution and ask for your understanding.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.
The architecture behind the solution - clearly structured, integrated in line with standards
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.
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.
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.
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 were yesterday - this is where digital security architecture begins
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.
Detects positions and security statuses precisely and tamper-proof.
Ensures standard-compliant, fast installation - even for retrofit projects.
Evaluating the sensor data
Further concepts for our elevator solutions
Implementation of elevator and safety functions with intelligent safety gear management
Electronic speed limiter with intelligent safety gear management
Security begins with trust.
As an industry manager for elevator technology, I am familiar with the challenges of implementing standards, modernization and digital safety architecture. I support you in setting up your projects in a structured, standard-compliant and future-proof manner.
Felix Baier
Industry Manager Elevator Technology
Make an appointment now
07.10.2025
∼ 2.87 MB
Safe shaft copying systems
07.10.2025
∼ 2.809 MB
Shaft copying systems - Sensors
