Attachable to existing encoders,
Johannes Huebner’s new electronic
overspeed switch EGS(H) 41 is
suitable for applications ranging from
steelworks and rolling mills to
mining, crane systems and nuclear
power plants. When an incident
occurs, the operator can use the
switch to transition to ‘Safety Limited
Speed’ or ‘Zero Rotation’ and start
servicing and repair immediately.

EGS(H) 41 is certified to the
international IEC 61508 standard for
use in safety-oriented applications up
to Safety Integrity Level (SIL) 2 and to
Performance Level (PL) d in
accordance with DIN EN ISO 13849.
It comes with two separate,
galvanically isolated switches for
rotation speed monitoring, each
independently programmable for
over- and underspeed from a value of
0.5min-1. Functions for integrated
downtime and slip monitoring are
included, plus a diagnostic switch that
monitors the device’s safety functions.