Rockwell-automation 6012DB PowerFlex Medium Voltage Variable Frequency Manual do Utilizador descarregar pdf (Página 27)

Rockwell Automation Publication 6000-UM001B-EN-P - October 2014 27

Drive System Layout Chapter 2

The status information of the Power Module is transmitted through the

electrical-optical converter and sent to the main control unit. When there is a

fault, the main control unit sends control signals to lockout or bypass the affected

Power Module.

The Power Module cabinet consists of Power Modules, current transformers and

high-voltage cable.

The Power Modules are divided evenly into three phases (U, V, and W). The

units in each phase are connected end-to-end at the output terminals. Then

individual phases are formed, using a star connection. Current transformers are

installed into the U phase and W phase.

Different models of Power Modules are used for VFDs of different power ratings

(Figure 19

Figure 19 - Typical Fixed-mounted Power Module

Line Terminals

Fuse

Optic Fiber Socket

and Status Indicator

Output Terminal

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Rockwell-automation 6012DB PowerFlex Medium Voltage Variable Frequency Manual do Utilizador Página 27