14
Installation GRS103
Release
01
03/2022
2.9.4 Requirements for connecting the signal contact
Before connecting the signal contact, always verify that the requirements
listed are complied with.
The following requirements apply without restrictions:
The switched voltage complies with the requirements for a safety extra-
low voltage (SELV) according to IEC 60950-1 or ES1 according to IEC/
EN 62368-1.
The connected voltage is limited by a current limitation device or a fuse.
Observe the electrical threshold values for the signal contact.
See “Technical data” on page 62.
2.10 Connecting data cables
Note the following general recommendations for data cable connections in
environments with high electrical interference levels:
Keep the length of the data cables as short as possible.
Use optical data cables for the data transmission between the buildings.
When using copper cables, provide a sufficient separation between the
power supply cables and the data cables. Ideally, install the cables in
separate cable channels.
Verify that power supply cables and data cables do not run parallel over
longer distances. To reduce inductive coupling, verify that the power
supply cables and data cables cross at a 90 ° angle.
Use shielded data cables for gigabit transmission via copper cables, for
example SF/UTP cables according to ISO/IEC 11801. To meet
EN 50121-4 and marine application requirements, use shielded data
cables at all transmission rates.
Connect the data cables according to your requirements.
Please note that products recommended as accessories may have
characteristics that do not fully correspond to those of the corresponding
product. This may limit their possible usage in the overall system.
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