Control panel display rounds off the emergency call system

When it comes to lift emergency calls, operators also have to think of the optical signalling. This is required by DIN EN 81-28:2018.

With the amendment of the Operational Safety Ordinance in 2015, the restructuring of the communication networks in Germany and not least the result of the revised DIN EN 81-28:2018, the technical components of the lift emergency calling are becoming increasingly important.

The good old analogue times are long since history. Other fundamental changes in the transmission of emergency calls and reports are already coming into view. Standards from the areas of services and transmission technology already exist.

Considerably increase

In future, they will most probably play an elementary role in lift emergency calls. The logical conclusion from this is that the existing emergency call technology and the associated processes in emergency call and service control centres have to undergo further development.

As a result, the lift emergency call equipment will increase considerably in technological complexity. The contents of standards and guidelines and the consequences of their non-observance are sufficiently well-known. However, the operators are often not aware of their responsibility and the associated liability.

Visible signalisation in lift car

Visible signalling in the lift car is also defined very clearly in connection with the remote emergency call system in DIN EN 81-28:2018. While the requirements for a display for the emergency call status in the past were formulated in the standard for disabled-friendly lifts, DIN EN 81-28:2018 includes an additional requirement profile.

For example, the standard says that a yellow pictogram has to be illuminated with a bell signal in the case of an emergency call recognised as genuine. During the vocal communication between the person in the lift car and the continuously occupied office (normally, emergency call centre or rescue organisation), a green illuminated pictogram has to be permanently illuminated with "head symbols" (for listening and speaking).

Moreover, both pictograms have to signal by flashing alternately if the prescribed routine message has not been properly transmitted after 72 hours at the latest by the lift emergency call system to the emergency call centre.

Retrofitting an optical display

Telegärtner Elektronik is a development company and manufacturer and supplier of lift emergency call systems with a 30-year market presence. Apart from the tried-and-tested and forward-oriented emergency call components, it has set itself the task of developing standard-compliant control panels and pictograms and producing them in its own company.

Especially in the case of older lift generations, it is advisable to retrofit the optical display in addition to the prescribed emergency call system. Apart from the normative requirements, the product management of Telegärtner takes the mechanical and electronic circumstances of the lifts into account in drawing up the product brief.

Easy to mount

Direct voltage supply between 10 V and 30 V is required in lifts for operating the control panel display. Thanks to the integrated LED technology, the electricity consumption is less than 20 mA, which distinguishes the display as sustainable.

At just 6 mm, the entire display unit in the car is extremely flat and projects a mere 8 mm in the shaft direction. With four drill holes, two 5 mm and two 10 mm each, the display can easily be mounted without much effort and without complicated and expensive special tools.

In the case of less precisely executed drill holes, the control panel display can be aligned and adjusted during installation. The surface made of VA-steel with laser inscription is not just wear-proof, but also durable.

Frank Spickeneder
The author works in Telegärtner Elektronik distribution and is responsible for the emergency call department

More information:www.prolift-aufzugnotruf.de