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EL6910 ๋ฐ์ดํ„ฐ์‹œํŠธ(HTML) 26 Page - Beckhoff Automation GmbH & Co. KG

๋ถ€ํ’ˆ๋ช… EL6910
์ƒ์„ธ๋‚ด์šฉ  TwinSAFE Logic Terminal
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์ œ์กฐ์‚ฌ  BECKHOFF [Beckhoff Automation GmbH & Co. KG]
ํ™ˆํŽ˜์ด์ง€  https://beckhoff.com/
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EL6910 ๋ฐ์ดํ„ฐ์‹œํŠธ(HTML) 26 Page - Beckhoff Automation GmbH & Co. KG

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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 125ย A.
Fig.ย 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 230ย 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 10ย 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.


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