DC−bus operation
Introduction
Terminology and abbreviations used
7
l
110
EDS700ACBA EN 5.1
7 DC−bus operation
7.1 Introduction
7.1.1 Terminology and abbreviations used
Explanations of special terms concerning DC−bus operation can be found in the chapter
"About this documentation" under "Terminology and abbreviations used" (¶ 10).
7.1.2 Advantages of a drive system
When several controllers are operated in a DC−bus connection (DC bus), this offers the
following advantages:
ƒ Energy exchange between controllers in generator−mode (braking) and motor−mode
operation.
ƒ The energy exchange reduces the supply power from the AC mains.
ƒ DC−supply modules or feeding single−axis controllers can be dimensioned with a
lower rated power.
ƒ The energy exchange reduces the braking losses in generator−mode operation.
Advantages for installation:
ƒ Only one AC−mains connection (e.g. at the DC−supply module).
ƒ Reduced wiring costs.
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