3.3
Wiring of Programmable Controllers for EMC
The following section describes:
••
Routing of cables within and outside cabinets
••
Equipotential bonding between devices
••
Single and double-ended connection of cable shields
••
Checklist for electromagnetically compatible installation
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 within
and outside cabinets
For electromagnetically compatible routing of cables and lines, it is
expedient to subdivide the lines into the following line groups and lay
the groups separately.
Group A
••
Shielded bus and data lines (for programmer, OP, SINEC L1,
SINEC L2, printer, etc.)
••
Shielded analog lines
••
Unshielded lines for DC voltage
≤
60 V
••
Unshielded lines for AC voltage
≤
25 V
••
Coaxial cables for monitors
Group B
••
Unshielded lines for DC voltage > 60 V and
≤
400 V
••
Unshielded lines for AC voltage > 25 V and
≤
400 V
Group C
••
Unshielded lines for DC and AC voltage > 400 V
Group D
••
Lines for SINEC H1
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
Group A
➀
➁
➂
➃
Group B
➁
➀
➂
➃
Group C
➂
➂
➀
➃
Group D
➃
➃
➃
➀
Wiring of Programmable Controllers for EMC
System Manual
3 - 14
C79000-B8576-C199-03
