Siemens SIMOVERT MASTERDRIVES 6SE7087-6CX86-2BA1 Manual page 34

Active front end (afe) afe rectifier / regenerative feedback unit ac-dc modular design for construction types e to j

Table of Contents

Installation

Water cooling

Built-in components

in the roof section

Implementation of

24 V DC auxiliary

supply

5-12

Inverters with water cooling (item number suffix: -1AA0) are suitable for

mounting in enclosed cabinets (IP54). The components not mounted on

the heat sink, such as the electronics and the DC link capacitors, are

cooled by heat transfer at the heat sink fins. To enable this heat

transfer to take place, air circulation inside the unit is necessary.

Therefore, when installing the chassis unit in a cabinet, you must make

sure that the air being discharged from the fan can flow into the inside

of the chassis. The partitions to be provided in units with air cooling

are a disturbing factor in this case! They should not be mounted.

For an application in the types of protection > IP40, a distance of at

least 90 mm must be observed between the top of the units and the top

of the cabinet.

The units do not require external cooling air.

Additional losses cannot be dissipated!

1-inch internal threads are envisaged for the water connection. The

connecting nipples should be made of stainless steel or thick-walled

aluminum. Ideally, the connection should have flat seals. If the

connecting pieces enclosed with the units are used, these should be

sealed with Loctite 542 or with teflon tape.

Cooling water infeed (blue) and return (red) must be connected

according to the color scheme! The color markings can be found next to

the 1-inch water connection below the heat sink.

If components are built into a cabinet roof section (DC bus, DC 24 V

supply), these should be placed in the center if possible so that the air

leaving the fans can reach the openings in the roof cover unobstructed.

In order to ensure fault-free operation of the equipment (in terms of

electromagnetic compatibility), it is advisable to provide each chassis

unit with its own 24 V DC auxiliary supply with isolating transformer.

6SE7087-6CX86-2BA1

Operating Instructions SIMOVERT MASTERDRIVES AFE

04.2006

Siemens AG

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