Relay Cable; Routing The Cables - ABB ACS150 User Manual

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A double-shielded cable is the best alternative for low-voltage digital signals, but a
single-shielded or unshielded twisted multipair cable (Figure b) is also usable.
However, for frequency input, always use a shielded cable.
a b
A double-shielded twisted A single-shielded twisted
multipair cable multipair cable
Run the analog signal and digital signals in separate cables.
Relay-controlled signals, providing their voltage does not exceed 48 V, can be run in
the same cables as digital input signals. It is recommended that the relay-controlled
signals are run as twisted pairs.
Never mix 24 VDC and 115/230 VAC signals in the same cable.

Relay cable

The cable type with braided metallic screen (e.g. ÖLFLEX by LAPPKABEL) has
been tested and approved by ABB.

Routing the cables

Route the motor cable away from other cable routes. Motor cables of several drives
can be run in parallel installed next to each other. It is recommended that the motor
cable, input power cable and control cables be installed on separate trays. Avoid
long parallel runs of motor cables with other cables to decrease electromagnetic
interference caused by the rapid changes in the drive output voltage.
Where control cables must cross power cables make sure that they are arranged at
an angle as near to 90 degrees as possible.
The cable trays must have good electrical bonding to each other and to the
grounding electrodes. Aluminium tray systems can be used to improve local
equalizing of potential.
Planning electrical installation