Download - ISI D. Gatermann

Appendix
A.2 Protection against electromagnetic interference
Cables for ...
and cables for ...
Run ...

DC voltage (> 60 V and ≤ 400 V),
unshielded

Bus signals, shielded (for example,
PROFIBUS, PROFINET)

AC voltage (> 25 V and ≤ 400 V),
unshielded

Data signals, shielded
(programming devices, operator
panels, printers, counter inputs,
etc.)

Analog signals, shielded

DC voltage ( ≤ 60 V), unshielded

Process signals ( ≤ 25 V), shielded

AC voltage (≤ 25 V), unshielded

Monitors (coaxial cable)

DC voltage (> 60 V and ≤ 400 V),
unshielded

AC voltage (> 25 V and ≤ 400 V),
unshielded

DC and AC voltage (> 400 V),
unshielded
In separate bundles or cable ducts (no
minimum clearance necessary)
In common bundles or cable ducts
Inside cabinets:
In separate bundles or cable ducts (no
minimum clearance necessary)
Outside cabinets:
On separate cable racks with a
clearance of at least 10 cm
DC and AC voltage (> 400 V),
unshielded


Inside cabinets:
Bus signals, shielded (e.g.
PROFIBUS, PROFINET)
In separate bundles or cable ducts (no
minimum clearance necessary)
Data signals, shielded
(programming devices, operator
panels, printers, counter inputs,
etc.)
Outside cabinets:
On separate cable racks with a
clearance of at least 10 cm

Analog signals, shielded

DC voltage ( ≤ 60 V), unshielded

Process signals ( ≤ 25 V), shielded

AC voltage (≤ 25 V), unshielded

Monitors (coaxial cable)

DC and AC voltage (> 400 V),
unshielded
In common bundles or cable ducts
CPU 31xC and CPU 31x: Installation
276
Operating Instructions, 03/2011, A5E00105492-12