Wiring Of Programmable Controllers For Emc; Routing Of Cables - Siemens S5-135U/155U System Manual

Installation Guidelines
3.3

Wiring of Programmable Controllers for EMC

The following section describes:
3.3.1

Routing of Cables

This section covers the routing of bus, signal and supply lines. The purpose
cable routing is to suppress crosstalk between cables laid in parallel.
Routing of Cables For electromagnetically compatible routing of cables and lines, it is
Within and expedient to subdivide the lines into the following line groups and lay the
Outside Cabinets
groups separately.
Group A
Group B
Group C
Group D
From the combination of individual groups in the following table, you can
read off the conditions for laying the line groups.
Group A
Group B
Group C
Group D
3-12
Routing of cables within and outside cabinets
Equipotential bonding between devices
Single and double-ended connection of cable shields
Checklist for electromagnetically compatible installation
Shielded bus and data lines (for programmer, OP, SINEC L1, SINEC L2,
printer, etc.)
Shielded analog lines
Unshielded lines for DC voltage
Unshielded lines for AC voltage
Coaxial cables for monitors
Unshielded lines for DC voltage > 60V and
Unshielded lines for AC voltage > 25V and
Unshielded lines for DC and AC voltage > 400V
Lines for SINEC H1
Group A
60 V
25 V
400V
400V
Group B Group C
C79000-G8576-C199-06
Group D
System Manual