Serie 750, 753
Planning
System manual | Version: 3.0.2
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• Offer adequate protection against direct or indirect contact.
• Offer adequate protection against UV irradiation.
• Restrict access to authorized personnel and may only be opened with tools.
• Ensure the required pollution degree in the vicinity of the system.
• Prevent fire from spreading outside of the enclosure.
• Guarantee mechanical stability.
4.2.2 Overcurrent Protection
System and field supply are through the head station and/or additional supply modules.
Protect the power supply as specified in the technical product data. Use:
• Supply modules with integrated fuses
• External fuses
You can find more information in the
&
Product Manual
.
4.2.3 Ground Conductor
The I/O system does not require a protective conductor connection for proper operation.
In addition, the I/O system does not provide any protective conductor functionality via the
field connections. If a protective conductor connection is required, it must be implemented
outside the system.
4.2.4 Buffering
To compensate for power interruptions per IEC 61131 (PS-1 or PS-2), external buffering
is required.
Buffer capacity depends on the node configuration, which is why it is not possible to pro-
vide general information on the required capacity.
4.2.5 Mounting Position
All specifications and handling steps refer to the nominal mounting position. Deviating
mounting positions affect, for example:
• Air circulation
• Measuring accuracy
Maintain the following clearances to adjacent components, cable ducts and the sides of
housings and frames for the entire node structure.
