6
4 Functions and features
The fail-safe inductive sensor GF711S detects metal without contact�
Safety function SF: the safe state (output stage switched off; logic "0") is achieved
when undamping greater than or equal to the safe switch-off distance s
ar
(→ 9
Technical data)�
Also observe the notes on installation of the sensor (→ 6 Installation)�
The fail-safe inductive sensor is a proximity device with defined behaviour under
fault conditions (PDDB) to IEC 60947-5-3�
The fail-safe sensor conforms to Performance Level d according to
EN ISO 13849-1 as well as to the requirements SIL 2 to IEC 61508 and meets
SILcl 2 to IEC 62061�
The unit corresponds to the classification I2A12SP2 to IEC 60947-5-2 for non-
flush installation (→ 6 Installation)�
The fail-safe inductive sensor has been certified by TÜVNord�
5 Function
"0"
"1"
1: dual LED: signal (yellow); power (green)
2: close zone
3: enable zone
4: safe switch-off distance s
ar
5: target
5.1 Enable zone
The outputs (OSSD) are only enabled when a damping target is present in the
enable zone� Outside this enable zone the outputs remain switched off�
The safe switch-off distance s
ar
is > 6 mm�
The enable zone is different if damping elements which deviate from the
standard target plate in terms of material, form and size are used�
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