CTI 2500-RIO-B Installation and Operation Guide V1.4
19
Cable Routing and Layout Guidelines
Cables containing the following
should be routed
Bus signals, e.g. Remote I/O
Data signals for PCs, programming devices, printers etc.
Screened analog inputs
Unscreened DC voltages (<= 60V)
Screened process signals (<= 25 V)
Unscreened AC voltages (<= 25V)
Coaxial cables for monitors
in the same cable loom or cable duct
DC voltages from 60 V to 400 V (unscreened)
AC voltages from 25V to 400 V (unscreened)
in separate cable looms or cable ducts
without minimum spacing requirements
DC and AC voltages > 400 V (unscreened)
Telephone cables
For areas with explosion hazard
in separate cable looms or cable ducts
without minimum spacing requirements
Laying Cables Outside of Control Cabinets
All cable ducts should be constructed of electrically conducting material and connected to functional
ground at regular intervals. Cables should not be subject to mechanical loads which exceed the
manufacturer’s specifications. If this cannot be avoided, additional protective measures should be taken,
such as laying the cables in a steel pipe or rugged metal duct. The pipe or duct should then be grounded
at regular intervals and protected against corrosion.
