Planning the electrical installation
39
Selecting the control cables
All control cables must be shielded.
Use a double-shielded twisted pair cable (Figure a, e.g. JAMAK by NK Cables,
Finland) for analogue signals. This type of cable is recommended for the pulse
encoder signals also. Employ one individually shielded pair for each signal. Do not
use common return for different analogue signals.
A double-shielded cable is the best alternative for low-voltage digital signals but
single-shielded twisted multipair cable (Figure b) is also usable.
Run analogue and digital signals in separate, shielded 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 be 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,
Germany) has been tested and approved by ABB.
Control panel cable
In remote use, the cable connecting the control panel to the drive must not exceed 3
metres (10 ft). The cable type tested and approved by ABB is used in control panel
option kits.
a
A double shielded twisted
pair cable
b
A single shielded twisted
multipair cable
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