Application Example
EP7211-0034 - STO Function
1.0.02019-11-11
Version:Date:
Page 1: ...Application Example EP7211 0034 STO Function 1 0 0 2019 11 11 Version Date...
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Page 3: ...2 Safety instructions 8 2 1 Delivery state 8 2 2 Operator s obligation to exercise diligence 8 2 3 Description of instructions 9 3 STO function with EP7211 0034 category 3 PL d 10 3 1 Parameters of t...
Page 4: ...Table of contents EP7211 0034 STO Function 4 Version 1 0 0...
Page 5: ...ocumentation are valid Further information given on the product pages of the Beckhoff homepage in emails or in other publications is not authoritative Disclaimer The documentation has been prepared wi...
Page 6: ...0 First release version 1 3 Purpose and area of application The Application Guide provides the user with examples for the calculation of safety parameters for safety functions according to the standar...
Page 7: ...typically yields an analog value corresponding to a category 3 and PL d This technology does not support digital input signals and cannot be used in a single channel structure only one TwinSAFE SC ch...
Page 8: ...only used as intended see chapter Product description the TwinSAFE products are only operated in sound condition and in working order the TwinSAFE products are operated only by suitably qualified and...
Page 9: ...n directly endangers the life and health of persons WARNING Risk of injury Failure to follow this safety instruction endangers the life and health of persons CAUTION Personal injuries Failure to follo...
Page 10: ...nput of the EP7211 0034 is operated via the delayed output EStopDelOut Forwarding this signal to further EP7211 0034 via the second connection is allowed The EP7211 0034 supplies the information that...
Page 11: ...s permissible must be done by the machine manufacturer or user NOTE Calculation EP7211 0034 The EP7211 0034 is not taken into account in the calculation of the Performance Level according to DIN EN IS...
Page 12: ...per hour Lifetime T1 20 years 175200 hours 3 3 2 Diagnostic Coverage DC Component Value S1 S2 with testing plausibility DCavg 99 EL2904 with testing DCavg 99 3 3 3 Calculation of safety function 1 Ca...
Page 13: ...h this factor can be precisely determined Further it is assumed that all usual measures have been taken to prevent both channels failing unsafely at the same time due to an error e g overcurrent throu...
Page 14: ...C MTTF y h PFH E E h y y 6900 6900 6900 1 1 0 99 0 01 1108 6 1 1 1 03 09 8760 9 02 06 EL D EL EL DC MTTF y h PFH E E h y y 2904 2904 2904 1 1 0 99 0 01 913 2 1 1 1 25 09 8760 1 1 05 EL D EL EL DC MTTF...
Page 15: ...Designation for each channel Range for each channel low 3 years MTTFD 10 years medium 10 years MTTFD 30 years high 30 years MTTFD 100 years DC Name Range none DC 60 low 60 DC 90 medium 90 DC 99 high 9...
Page 16: ...on for Beckhoff components there Beckhoff Headquarters Beckhoff Automation GmbH Co KG Huelshorstweg 20 33415 Verl Germany Phone 49 5246 963 0 Fax 49 5246 963 198 e mail info beckhoff com Beckhoff Supp...
