3.7 Electrical Installation
3.7.1 Cabling Requirements
•
Select cables suitable for Ethernet data
transmission. Normally, CAT5e and CAT6 cables
are recommended for industrial applications.
•
Both types are available as unshielded twisted
pair and shielded twisted pair. Shielded cables are
recommended for use in industrial environments
and with frequency converters.
•
A maximum cable length of 100 m (328 ft) is
allowed between the switches.
•
Use optical fibers for gapping longer distances
and providing galvanic isolation.
3.7.2 Wiring Procedures
Wiring procedure for enclosure types A1–A3
1.
Mount the pre-configured cable wires with the
connectors on the fieldbus option. For A1 and A2
enclosures, mount the supplied strain relief on
top of the frequency converter with 2 screws, as
shown in
Illustration 3.10
. For cable specifications,
refer to
chapter 3.7.1 Cabling Requirements
.
2.
Position the cable between the spring loaded
metal clamps to establish mechanical fixation and
electrical contact between the cable and ground.
130
BT797.11
Illustration 3.10 Wiring for Enclosure Types A1–A3
Installation
VLT
®
BACnet/IP MCA 125
10
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Summary of Contents for VLT BACnet/IP MCA 125
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