поискавой системы для электроныых деталей |
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EL6910 датащи(PDF) 26 Page - Beckhoff Automation GmbH & Co. KG |
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EL6910 датащи(HTML) 26 Page - Beckhoff Automation GmbH & Co. KG |
26 / 144 page Operation EL6910 26 Version: 1.8.0 Note the connection of the power contacts During the design of a Bus Terminal block, the pin assignment of the individual Bus Terminals must be taken account of, since some types (e.g. analog Bus Terminals or digital 4-channel Bus Termi- nals) do not or not fully loop through the power contacts. Potential supply terminals (EL91xx, EL92xx) interrupt the power contacts and thus represent the start of a new supply rail. PE power contact The power contact labelled PE can be used as a protective earth. For safety reasons this contact mates first when plugging together, and can ground short-circuit currents of up to 125 A. Fig. 9: PE power contact CAUTION Insulation tests Note that, for reasons of electromagnetic compatibility, the PE contacts are capacitatively coupled to the mounting rail. This may lead to incorrect results during insulation testing or to damage on the terminal (e.g. disruptive discharge to the PE line during insulation testing of a consumer with a rated voltage of 230 V). For insulation testing, disconnect the PE supply line at the Bus Coupler or the Potential Supply Terminal! In order to decouple further feed points for testing, these Power Feed Terminals can be released and pulled at least 10 mm from the group of terminals. DANGER Serious risk of injury! The PE power contact must not be used for other potentials! 4.2.4.2 Overvoltage protection If protection against overvoltage is necessary in your plant, provide a surge filter for the voltage supply to the Bus Terminal blocks and the TwinSAFE terminals. |
Аналогичный номер детали - EL6910 |
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Аналогичное описание - EL6910 |
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