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About this document Operating Instructions Chapter 1 C4000 Select Note We also refer you to the SICK homepage on the Internet at www.sickusa.com and www.sick.com Here you will find information on: sample applications a list of frequently asked questions about the C4000 Select these operating instructions in different languages for viewing and printing certificates on the prototype test, the EC declaration of conformity and other documents 1.5 Abbreviations ESPE Electro-sensitive protective equipment (e.g. C4000 Select) OSSD Output signal switching device PFH The probability of failure per hour in accordance with the functional safety testing requirements outlined in IEC 61 508 PL Performance level in accordance with EN ISO 13 849A1 SIL Safety integrity level in accordance with IEC 61 508 SILCL SIL claim limit in accordance with EN 62 061 1.6 Recommendation Note Symbols used Recommendations are designed to give you some assistance in your decision-making process with respect to a certain function or a technical measure. Refer to notes for special features of the device. Display indicators show the status of the 7Asegment display of sender or receiver: Constant indication of characters, e.g. 2 When using an inverted mounting of the C4000 Select, you must take into account that the information presented by the 7-segment display will also be inverted. Red, Red, Off Take action … LED symbols describe the state of a diagnostics LED. Examples: Red The red LED is illuminated constantly. Red The red LED is flashing. Off The LED is off. Instructions for taking action are shown by an arrow. Read carefully and follow the instructions for action. Warning! WARNING A warning indicates an actual or potential risk or health hazard. They are designed to help you to prevent accidents. Read carefully and follow the warnings! Sender and receiver In drawings and diagrams, the symbol the receiver. 8012247/TI77/2011-03-07 Subject to change without notice denotes the sender and the symbol © SICK AG • Industrial Safety Systems • Germany • All rights reserved denotes 7
