STO
–
Safe Torque OFF
Safety information
Operating Manual Rev. 1.3
www.engelantriebe.de
page 6
5.3
Non-intended use
The non-intended use of the HFI integrated drives includes, among other things:
-
Use outdoors.
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Use in non-industrial areas (residential areas).
-
Use in applications where switching off can lead to dangerous movements or conditions.
5.4
Achievable safety level
The drives of the HFI series with integrated STO function meet the requirements of the test specifications:
-
Category 3 / PL e
according to EN ISO 13849-1/-2
-
SIL 3
according to EN61508, IEC 61800-5-2, EN62061
Note!
The achievable safety level depends on the other components used to implement a safety
function.
5.5
Requirements for safe operation
The requirements for safe operation are:
-
The correct integration of the safety function of the device into the overall system. The system/machine manufacturer
must always carry out a system/machine-specific risk assessment in accordance with DIN EN 60204-1.
-
Compliance with the specifications in this STO document and in the operating manual of the entire drive.
-
Consideration of the legal regulations for the place of destination.
-
For emergency stop applications, protection against automatic restart must be provided according to the required
safety category.
Note!
Depending on the application, measures may be required to prevent the drive from restarting
immediately upon deactivation of the STO safety function.
Note!
Depending on the application of the drive and irrespective of its STO safety function, measures
in accordance with DIN EN 60204-1 may become necessary to prevent unexpected start-up.
Attention!
Suspended loads or externally acting load forces must be secured by means of additional
measures!
