WEG MW500 Bedienungsanleitung PDF herunterladen (Seite 17)

MW500 | 11

Installation and Connection

- English -

Power supply capacity

 The MW500 is suitable for use in a circuit capable of delivering not more than 30.000 Arms

symmetrically (200 V - 480 V).

 In case the MW500 is installed in power supplies with current capacity over 30.000 Arms,

it is necessary to use proper protection circuits for those power supplies, such as

fuses or circuit breakers.

3.2.3.2 IT Networks

ATTENTION!

When drives with internal RFI filter is used in IT networks (neutral conductor

not grounded or grounded through a high ohmic value resistor), remove

grounding screw XE1, since those kinds of network cause damage to

the filter capacitors of the drive.

3.2.3.3 Dynamic Braking

Refer to ta b le B.1 for the following specifications of the dynamic braking: maximum

current, recommended resistance, effective current (*) and cable gauge.

Input Power

supply

Thermostat

Brake

resistor

Thermal

relay

Control power

supply

Contactor

DC+

Figure 3.2: Installation of brake resistor

(*) The effective braking current can be calculated as follows:

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WEG MW500 Bedienungsanleitung Seite 17