Logo! Installation And Wiring; General Guidelines - Siemens Logo! Manual

2 LOGO! installation and wiring

General guidelines

Please note the following guidelines for installing and wiring
your LOGO! :
S
Always ensure that the wiring of your LOGO! is
compliant with current rules and standards. Also,
conform with all national and regional regulations when
you install and operate the devices. For information on
standards and regulations that apply to your specific
case, contact your local authorities.
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Make sure that the device is de-energised.
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Always use cables with appropriate conductor
cross-sections for the relevant current. You can wire the
LOGO! with cable conductor cross-sections from
1.5 mm
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Only use approved bus cables.
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Do not exceed the screw torque of the terminals. The
maximum torque is: 0.5 N/m, see Chapter 2.3.
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Keep the cabling as short as possible. If longer cables
are necessary, you should use shielded versions. You
should always route your cables in pairs: i.e. one neutral
conductor plus one phase conductor or signal line.
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Always keep separate:
– The AC wiring
– High-voltage DC circuits with high-frequency
– Low-voltage signal wiring.
– The EIB bus cable may also be laid in parallel to
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Ensure that the wires are installed with appropriate
strain relief.
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Provide a suitable lightning surge arrester for cables
installed in hazardous areas.
LOGO! Manual
A5E00380835-01
2
to 2.5 mm
switching cycles
other cables.
2
; see Chapter 2.3.
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