POSITAL releases rotary encoders for safety-critical systems | Automation.com

POSITAL releases rotary encoders for safety-critical systems

November 102015
POSITAL releases rotary encoders for safety-critical systems

November 10, 2015 - POSITAL expanded its family of IXARC absolute rotary encoders to include models explicitly designed for use in safety-critical motion control systems. The devices are certified to Safety Integrity Level 2 (SIL 2) and Performance Level d (PL d) and feature a PROFINET communications interface as well as support PROFIsafe protocols. PROFIsafe-based control systems are used for critical applications such as industrial robots or material handling equipment, where loss of control could result in serious hazard.

The sensing elements in these devices are more mechanically rugged than optical measurement systems and significantly more resistant to presence of moisture and dust. Moreover, with no direct contact between sensing elements, IXARC magnetic encoders will retain their accuracy and reliability for very long periods. The measurement system is backed up by advanced signal processing and interface management software that supports a full range of PROFINET and PROFIsafe capabilities, including prioritized startup, media redundancy and the possibility of firmware updates through the PROFINET communications network. Ethernet bridging functionality is built into the communications interface, enabling integration in a variety of network topologies. System troubleshooting is simplified by the presence of LEDs that indicate the device’s operating status and help to isolate faults.

Like other members of POSITAL’s IXARC family, the SIL2-certified absolute rotary encoders are available in a wide range of mechanical configurations. Saltwater-resistant aluminum housings make these devices suitable for use in harsh environments.


POSITAL, a highly specialized manufacturer of absolute and incremental rotary encoders as well as inclinometers, belongs to the FRABA group which dates back to 1918, when its predecessor Franz Baumgartner elektrische Apparate GmbH, a producer of relays, was established. Today, the group consists of independent companies that employ a staff of 120 at locations in Germany, Singapore, and the USA, and operate a state-of-the-art production plant in Poland. Over the last few years, POSITAL has developed various innovative products, including optical and magnetic safety encoders as well as high-resolution magnetic multi-turn encoders.