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With U-ONE-SAFETY it is easy to realize motion and position dependent safety functions. New features include a safe position and error switch as well as the latest intrinsically safe absolute encoder interfaces. In addition, the system offers a reliable speed switch as well as optional current or incremental outputs.

U-ONE-SAFETY is available in two construction types:

Basic unit with directly attached modules housed in a compact, robust casing.

Basic unit in a robust casing connected to modules on a switchboard via fiber-optic cable.



Diameter solid shaft

14 mm 

Supply voltage

13 - 27 VDC 

Pulse rates

 4096 / 1024 (configurable)

Resolution singleturn

13 bit

Resolution multiturn

15 bit

Device temperature range

 -25 °C to +70 °C

Degree of protection



approx. 3,6 kg + 0,8 kg/module 

Possible switching outputs

Safe speed switch, safe position switch, safe error switch;

other switching functions on request

Possible signal outputs

Incremental, 4 ... 20 mA, PROFIsafe on PROFIBUS, PROFIsafe on PROFINET;

other interfaces on request

Special features

integrated dual channel architecture with internal cross-checking;

for applications up to safety category 3 and PL d to DIN EN ISO 13849 as well as SIL 2 to DIN EN 61508.

Operating and Assembly Instructions (PDF, 3.47 MB) Download
Configuration Instructions (PDF, 1.47 MB) Download
Catalog - U-ONE-SAFETY (PDF, 1.14 MB) Download
Inquiry form - U-ONE-SAFETY-Compact (PDF, 263 KB) Download
Case Study - Safely-limited position, mining (PDF, 1.55 MB) Download
Product Article U-ONE-SAFETY (PDF, 269 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.