Our website uses functional cookies. When remaining on this site, you are explicitly agreeing to the use of those cookies.

UOM 41L basic unit SIL 2

U-ONE® system: Basic unit SIL 2 certified

Speed, position and overspeed detection in one – U-ONE the universal encoder system from Johannes Huebner Giessen offers up to ten functions in a single unit. The system includes a universal basic unit that is connected to the electronic function modules on the switchboard via EMC proof fiber optic cable. The basic unit UOM 41L-1212 in a rugged aluminium casing is certified to EN 61508 SIL CL2 and EN 13849 PL d. It is designed for maximum speeds up to 3000 rpm; it is available as construction types B5 with flange and B35 with flange and foot. It is possible to arrange the ten function modules belonging to the system side-by-side in any order to facilitate flexible configuration.


Diameter solid shaft

11 mm or 14 mm

Supply voltage

12 - 30 VDC

Pulse rates


Resolution singleturn

12 bit (4096 pulses per revolution)

Resolution multiturn

12 bit (4096 revolutions)

Signal transmission

optical via FOC

Device temperature range

-25 °C to +85 °C

Degree of protection

IP65 / IP66


approx. 2.5 kg

Special features

Certified to EN 61508 SIL CL2 and EN 13849 PL d

Diameter hollow shaft 20 mm available

Operating and Assembly Instructions (PDF, 4.24 MB) Download
Catalog - U-ONE (PDF, 2.99 MB) Download
Case Study - Side guides/screw downs, rolling mill (PDF, 218 KB) Download
Case Study - Blast furnace skip hoist, rolling mill (PDF, 1.21 MB) Download
Case Study - Hoist/drum, rolling mill (PDF, 163 KB) Download
Case Study - RTG hoist, cranes (PDF, 1.19 MB) Download
Software U-ONE basic unit (ZIP, 10.09 MB) Download

Version: 2 Rev 5.0

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

Software UO-AWG-PRO (ZIP, 1.62 MB) Download

Version: 1 Rev 1.0

Microsoft Windows® 98, NT, 2000, XP, Vista, 7, 8, 8.1, 10

Software ERC Pro (ZIP, 1.78 MB) Download

Version: 3 Rev 9.6

Microsoft Windows® 98, NT, 2000, XP, Vista, 7, 8, 8.1, 10

Software CanOpen driver (ZIP, 2 KB) Download
Software PROFIBUS driver (ZIP, 9 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.