Schneider Electric Altivar 32 Manuel d'installation télécharger pdf (Page 40)

Installation

S1A28686 03/2010

DC bus connection

Uses overview

Drive fed by the AC mains with common DC link

This use is suitable in case of equivalent drive ratings (or not more than 1 rating difference). Each product is fed

by the standard main inputs and all products are linked by their DC Bus connection.

The goal of this DC Bus sharing function is to save energy. When a drive is braking, the energy can be reused

by another drive on the DC Bus network instead of being dissipated (and so wasted) in a braking resistor.

Moreover, this kind of cabling enables to reduce the braking resistor value and help improving braking

performance without braking resistor.

Drive only fed by the DC link

This use is suitable when combining different drive ratings (more than one rating different).

One product is fed by the main network and feeds other products via the DC Bus cable connection.

This kind of installation has the same energy benefit than the previous one but requires at least one higher rating

product, able to supply the other ones.

Drive fed by a DC power supply

All products are fed by an external DC power supply via the DC Bus cable connection.

This kind of installation requires to achieve the following requirements:

z This source must be protected against phase to phase short-circuit and earth short-circuit.

z The source must be able to give the sum of all DC drive current used in same time.

z This DC source must integrate DC choke to limit the ripple current less than 5%.

Drive preparation

DC bus connectors are located on top of the drive on size A and B. Break the protective covers, using a

screwdriver. These covers can easily be removed using a screwdriver

 . Remove the plastic protective caps

from the terminals

. When not connected, the DC bus terminals should be covered using the plastic caps. Once

this is done the drive becomes IP20 again. If lost, the plastic caps are also available as spare parts.

DANGER

HAZARD OF ELECTRIC SHOCK OR ARC FLASH

z Only use dedicated cable references from the catalog.

z As cable is the same for both voltage ranges, ensure voltage range before cabling.

z Use a screwdriver to remove the DC connector protective covers, instead of precision knife or scissors.

z If the DC bus cable is removed, replace the DC bus protective plastic caps provided with the drive.

Failure to follow these instructions will result in death or serious injury.





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Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-www.stevenengineering.com

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Schneider Electric Altivar 32 Manuel d'installation Page 40

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