Engel HFI2230-S200, Operating Manual

Page: 5 / 20

STO – Safe Torque OFF
Abbreviations used in this document
Operating Manual Rev. 1.3 www.engelantriebe.de page 5
4 Abbreviations used in this document
Abbreviation Meaning
DCavg Average D iagnostic C overage
HFT H ardware F ault T olerance
MTTFd M ean T ime T o D angerous F ailure
OSSD O utput S ignal S witching D evice
PELV P rotected E xtra L ow V oltage
PFD P robability of dangerous F ailure on D emand
PFH P robability of dangerous F ailure per H our
PL P erformance L evel
SELV S afety E xtra L ow V oltage
SFF S afe F ailure F raction
SIL (SC) S afety I ntegrity L evel ( S ystematic C apability)
STO S afe T orque O ff
5 Safety information
5.1 General safety information
Always observe the safety information in the operating manual of the drive used.
5.2 Intended use
The drives of the HFI series with integrated STO module may only be used under the following conditions:
- The drive is in technically perfect condition.
- The drive is in its original condition without any unauthorised modifications.
- The limit values listed in the Technical Data chapters of the operating manual and in this STO document
(see chapter 7 Technical data ) are complied with.
- Use in the industrial sector.
Attention!
Potential danger of the safety function becoming ineffective:
• Observe the ambient and installation conditions! (see chapter 7.1 System data )
• Never bypass the safety function!
• Do not open the housing!
• Never carry out unauthorised repairs on the device!
Attention!
In the event of damage resulting from unauthorised modification or non-intended use,
the warranty and liability claim against the manufacturer shall expire.