ABB AC 800M, Руководство по установке

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Section 3 Installation Quick Start
9ARD000015-600 65
The trunk line can be constructed using single cable types within a segment. As
defined in the individual examples of cable profiles in
Cable Types on page 21,
mixing of cable types in the same segment is permitted with appropriate de-rating.
The electric current availability on the network depends on the following
limitations. More than one limitation can exist at the same time.
• Cable Type (electric current capacity).
• Connector Type (contact rating).
• The maximum common mode limit of the transceiver (this parameter limits the
voltage drop that can be tolerated on the power cable.)
For trunk cable electric current that corresponds to the maximum common mode
voltage drop, refer to
Cable Types on page 21.
Quick Start
Execute the following steps to configure power:
1. Add all the electric current requirements for each device on the network.
2. Measure the total length of the network.
3. For electric current capability based on the network length and the cable type
used, refer to Section
Cable Types on page 21 or the catalogue of the cable
supplier.
4. If the electric current accumulated from each device is less than the value given
in the catalogue for the cable, then any one of the configurations available in
the
Primary Network Configuration on page 66 can be used.
5. If the electric current accumulated from each device is greater than the value
given in the catalogue for the cable, then refer to
Single supply end-connected
on page 66. The section Single supply end-connected on page 66 duplicates the
Before installing the DeviceNet, the user should be familiar with the country and
local codes of the location where it is to be installed. In U.S. and Canada, while
installing the DeviceNet cable types in building wiring, it must be installed as a
Class 2 circuit. This requires electric current limiting to 4 amps in all sections.
The system components rating is 8 amps.