Mounting; Mounting Sequence - WAGO 750-439/040-000 Manual

36

Mounting

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5 Mounting
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5.1

Mounting Sequence

Fieldbus couplers, controllers and I/O modules of the WAGO I/O SYSTEM 750
are snapped directly on a carrier rail in accordance with the European standard
EN 60175 (DIN 35).
The reliable positioning and connection is made using a tongue and groove
system. Due to the automatic locking, the individual devices are securely seated
on the rail after installation.
Starting with the fieldbus coupler or controller, the I/O modules are mounted
adjacent to each other according to the project design. Errors in the design of the
node in terms of the potential groups (connection via the power contacts) are
recognized, as the I/O modules with power contacts (blade contacts) cannot be
linked to I/O modules with fewer power contacts.
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Risk of injury due to sharp-edged blade contacts!
The blade contacts are sharp-edged. Handle the I/O module carefully to prevent
injury. Do not touch the blade contacts.
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Requirements for Clearances and Creepage Distances
For all sections of a node that contain I/O modules for Ex-i use, stricter require-
ments with regard to clearances and creepage distances apply.
• Before such a node section, the respective Power supply 24 VDC Diagn
for Ex i XTR Modules (750-606/040-000) ensures the required distance.
After such a node section, 4 Distance Modules XTR (750-616/040-000)
•
must be used.
Exception: If the following section consists only of an End Module XTR
(750-600), no distance modules are required.
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Insert I/O modules only from the proper direction!
All I/O modules feature grooves for power jumper contacts on the right side. For
some I/O modules, the grooves are closed on the top. Therefore, I/O modules
featuring a power jumper contact on the left side cannot be snapped from the
top. This mechanical coding helps to avoid configuration errors, which may
destroy the I/O modules. Therefore, insert I/O modules only from the right and
from the top.
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Manual
Version 1.1.0
WAGO I/O SYSTEM 750 XTR
750-439/040-000 8DI NAMUR Ex i XTR