Benutzerhandbuch / User Manual - TR Electronic
Benutzerhandbuch / User Manual - TR Electronic
Benutzerhandbuch / User Manual - TR Electronic
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Appendix<br />
15 Appendix<br />
15.1 Abbreviations and terms used<br />
CDH<br />
CDV<br />
CDx<br />
CRC<br />
EC<br />
EMC<br />
ESD<br />
IEC<br />
VDE<br />
Engineering<br />
tool<br />
F<br />
F-Device<br />
F-Host<br />
Fault<br />
exclusion<br />
FMEA<br />
Passivation<br />
DC avg<br />
PFD av<br />
PFH<br />
MTTF d<br />
SIL<br />
Absolute encoder with redundant dual scanning,<br />
hollow shaft design<br />
Absolute encoder with redundant dual scanning,<br />
solid shaft design<br />
Absolute encoder with redundant dual scanning,<br />
all designs<br />
Cylic Redundancy Check<br />
European Community<br />
Electro Magnetic Compatibility<br />
Electro Static Discharge<br />
International Electrotechnical Commission<br />
Verein Deutscher Elektrotechniker (Association of German<br />
Electrotechnicians)<br />
Projection and commissioning tool<br />
Generally stands for the term safety or fail-safe<br />
Safety device for safety applications<br />
Safety control for safety applications<br />
Compromise between the technical safety requirements and the<br />
theoretical possibility of an error occurring<br />
Failure Mode and Effects Analysis, reliability engineering methods, for<br />
finding potential weak points<br />
In the case of an F-Periphery with outputs, the F-System transmits<br />
substitute values (e.g. 0) to the fail-safe outputs during a passivation<br />
instead of the output values provided in the process image by the<br />
safety program.<br />
Diagnostic Coverage<br />
Average diagnostic coverage<br />
Average Probability of Failure on Demand<br />
Average probability of failure of a safety function with low demand<br />
Probability of Failure per Hour<br />
Operating mode with high requirement rate or continuous demand.<br />
Probability of dangerous failure per hour.<br />
Mean Time To Failure (dangerous)<br />
Mean time until dangerous failure<br />
Safety Integrity Level: Four discrete levels (SIL1 to SIL4). The higher<br />
the SIL of a safety-related system, the lower the probability that the<br />
system cannot execute the required safety functions.<br />
© <strong>TR</strong>-<strong>Electronic</strong> GmbH 2010, All Rights Reserved Printed in the Federal Republic of Germany<br />
Page 202 of 207 <strong>TR</strong> - ECE - BA - DGB - 0079 - 03 05/25/2011