Press release wpi 438 / 1211 Area: position sensors
Safe detection of metal.
Essen, December 2011 – The new fail-safe inductive sensor GG851S of ifm electronic enables a simpler solution to certain applications
than today. The definition of the safety function is new: The safe state is reached when the damping element is within the safe
switch-off zone. If, however, metal is in the enable zone, the outputs
are switched on.
The innovative operating principle can be illustrated using the example of crane bridge monitoring: A fail-safe sensor monitors the position of the
crane on the rail. So far the sensor was damped across the whole travel;
the sensor was undamped only at the stop positions. This new fail-safe sensor allows mounting of only one damping element each at the
beginning and the end of the crane bridge, which saves material and
The GG851S sensor has two OSSD outputs for connection to a safety relay or PLC The diagnosis of the different operating states is made via
LEDs. As damping element a metal target is sufficient, a magnetic or
coded target is not necessary. Integration into the machine is done due to flush mounting. The fail-safe sensor is certified to ISO 13849-1 PL d, IEC
61508 SIL 2 and IEC 62061 SIL cl2.
ifm electronic gmbh Friedrichstr. 1 45128 Essen wpi_438_print.jpg Germany www.ifm.com Safe detection of metal: fail-E-Mail: firstname.lastname@example.org
safe inductive sensor
Simone Felderhoff GG851S. Press officer
Tel. +49 (0)201 / 24 22-1411 email@example.com
Dipl.-Ing. Andreas Biniasch Technical writing Tel. +49 (0)201 / 24 22-1425 firstname.lastname@example.org Text and images are available on our website at: www.ifm.com/gb/press