7.9.4 Rules for the laying of PROFIBUS cables
Laying of bus cables
During laying of the PROFIBUS cable, you must avoid:
• twisting
• stretching and
• squeezing
Supplementary conditions
During laying of the indoor bus cable, you must also consider the following supplementary
conditions (d
O
= outer diameter of the cable):
Table 7-23 Supplementary conditions for the laying of PROFIBUS cables
Features Supplementary conditions
Bending radius for a single bend 80 mm (10xd
O
)
Bending radius (multiple times) 160 mm (20xd
O
)
Permissible temperature range for cable routing -5 °C to +50°C
Temperature range for storage and stationary operation -30°C to +65°C
Additional references
For length codes of prefabricated cables and additional information on PROFIBUS cables, refer
to "Electrical networks" in the PROFIBUS section of the IK PI catalog titled "Industrial
Communication and Field Devices".
7.9.5 Connecting PROFIBUS DP
Introduction
PROFIBUS cables are connected to the X126/X136 interface by means of a bus connector.
Connecting
7.9 PROFIBUS DP
NCU 7x0.3B PN
70 Equipment Manual, 10/2020, 6FC5397-1EP40-6BA1
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