Electrical Installation - Wieland samos PRO Manual

4.2

Electrical installation

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Switch off the power supply to the system!
It is possible for the system to be unexpectedly started while you are connecting the devices.
ATTENTION
NOTICE
• samosPRO gateways meet EMC conditions as set out in the EN 61000-6-2 specification for use
in an industrial environment.
• In order to ensure complete EMC safety, the hat rail must be connected to functional earth
(FE).
• The switch box or installation housing for the samosPRO system must meet at least the requi-
rements of protection class IP 54.
• Installation according to EN 50274.
• Electrical installation as per EN 60204-1.
• The external power supply of the devices must be able to bridge a short-term power outage of
20 ms in accordance with EN 60204-1.
• The power supply must meet the regulations for low-voltage with safe disconnection (SELV,
PELV) in accordance with EN 60664 and EN 50178 (equipping high-voltage systems with
electronic equipment).
• Ensure that all modules of the samosPRO system, the connected protective devices and the
power supplies are connected to the same ground connection. The ground of the RS-232 inter-
face is internally connected to the ground of the power supply for the controller module (A2).
• Connect the shielding of all field bus and Ethernet cables to functional earth (FE) just before
they lead into the switch box.
Wieland Electric GmbH | BA000970 | 07/2019 [9855]
Installation and basic configuration
37