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U-ONE® system: EGS module

The universal encoder system U-ONE from Johannes Huebner Giessen offers ten function modules in a single unit. The EGS module UO-EM-EGS 4 is an electronic overspeed switch designed to detect over- and underspeeds. Module functionality includes switch delay, inverse direction of rotation evaluation, switching function dependent on the direction of rotation and an option to perform switch tests. The module is programmed via the decoder interface.

Other function modules belonging to the U-ONE system offer the following functions: Speed monitoring, position detection, a large variety of bus interfaces, diverse Ethernet connections, electronic cam controller, synchronization module and graphic display of sequential processes.


Supply voltage

12 - 30 VDC

Connection technology

Internal bus connection


COMBICON terminal block

Switching speed ranges

0.63 to 300 rpm

2.5 to 1200 rpm

5 to 2400 rpm

10 to 3000 rpm

Switching speed

2 programmable switching points (normally-open contacts)

1 system monitor (normally-open contact)

Switching voltage/switching current

2 - 250 V AC/DC, max. 0.5 A

Programmable functions

Password protection

Inverse rotation evaluation

Overspeed and underspeed

Switch delay

Switching function according to direction of rotation

Switch test


Device temperature range

-25 °C to +70 °C

Programming manual (PDF, 1.15 MB) Download
Catalog - U-ONE (PDF, 2.99 MB) Download
Software EGS4x Pro (ZIP, 5.18 MB) Download

Version: 4 Rev 4.4

Microsoft Windows® XP, Vista, 7, 8, 8.1, 10

Case Study - Blast furnace skip hoist, rolling mill (PDF, 1.21 MB) Download
Case Study - Hoist/drum, rolling mill (PDF, 163 KB) Download


Standard dimension drawings and connection diagrams are provided in the Operating and Installation Instructions. We would be pleased to send you individual variations as well as DXF/STEP files on request.