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building has perhaps altered due to environ-

mental influences (strong heating due to inso-

lation, building subsidence...). The main area of

use for floor sensors is for precise positioning in

high-rise buildings and in special installations,

which for example have forklift truck traffic; as

feedback systems for catch devices.


The sensor technology for the lift includes in-

terfaces with SSI, CANopen (DS406 and DS417)

as well as special RS-485 and RS-422 protocols.

ELGO also provides special protocols based on

the above-mentioned interfaces for customer

versions. CANopen DS406 and DS417 are available

for sensors certified according to EN61508 (SIL3).

As a result, all standard commercial interfaces

are covered. Apart from certification according

to EN81-20, -21 and 50 (Europe), the ELGO sensor

systems are also certified for UL/CSA (USA) and

TSG T7007 (China), meaning the products can be

used worldwide.

The measurement and positioning specialist

also wishes to convince customers at the interlift

2019 once again with new solutions for the lift

sector and make a contribution to enabling lifts

to be positioned safely and quickly.

The ELGO Group has been involved with

solutions for measurements and positio-

ning for over 40 years. ELGO offers a wide

range of sensors for lifts. These range

from the smallest sensor, the Limax2M,

with which conveyance heights of 160 m

and speeds of up to 4 m/s are possible, to

the SIL3 certified sensor, the Limax3CP,

which is designed for conveyance heights

up to 262 m and speeds of up to 10 m/s.


LGO has developed a special sensor for the

high-rise market segment, the Limax4RED,

which covers conveyance heights of 1,500

m and can reliably detect speeds of up to 20 m/s.

This sensor is available both in a guided as well as

unguided version. Both versions can very easily

be used for inclined lifts, where a reliable, touch-

less sensor system resistant to environmental

influences is needed.

Other products that have already been in

successful use in other market segments for

years are magnet wheels and high resolution

linear measurement systems, which have very

successfully demonstrated their suitability in

tough environments, such as mobile automati-

on applications. ELGO now also provides these

sensors with corresponding interfaces especially

for the lift market.

ELGO has developed a new product for the

speed monitoring of the main axis of an escalator

with which safety in the modernisation of esca-

lators can be enhanced by mounting a pole ring

around the main axis. The special magnetisation

of the ring permits uninterrupted scanning of

the coding and as a result reliable monitoring

of the main axis.



Standardised products, like the LMIX and EMAX

sensor series have been on the market for years

and have proven their value in numerous ap-

plications. They permit incremental or absolute

rotational registration of the position and speed

of drive shafts of all kinds and are considered to

be sturdy, easy-to-install alternatives to optical


Another product for use in the lift sector is

the floor sensor, which is used for monitoring

building subsidence and to recognise the flush

position of the car under all conditions. This

flush sensor can in addition be compared with

the absolute position of the sensor technology.

Consequently, it is possible to find out at any

time whether the car has sunk or whether the

Polring und Magnetsensor zur

Geschwindigkeitsüberwachung der

Hauptachse einer Fahrtreppe,

zweitgeteilter Ring einfaches Retrofit.

Pole ring and magnetic sensor for

monitoring the speed of the main axis of

an escalator; split ring easy retrofit.

Stockwerksensor, zur Überwachung

von Gebäudesetzung und zur Erkennung

einer präzisen Bündig-Stellung des


Landing sensor, to monitor building

subsidence and recognise precise flush

position of the car.

LIMAX3CP installiert auf Fahrkorbkabine

LIMAX3CP installed on car cabin