Rockwell-automation 20P PowerFlex DC Drive - Frame A SCR Modules for D Manual do Utilizador descarregar pdf (Página 2)

2 PowerFlex® DC Drive - Frame A SCR Modules for Drives with Bus Bars

What You Need to Do

The SCR modules are located on the heat sink of the drive chassis, below all

circuit boards and components. To install the SCR modules:

❐ Step 1: Remove power from the drive

❐ Step 2: Remove the protective covers

❐ Step 3: Remove the Control EMI shield and Control board

❐ Step 4: Remove the Pulse Transformer and Switching Power Supply

boards

❐ Step 5: Remove the bus bars

❐ Step 6: Remove the existing SCR modules

❐ Step 7: Install the new SCR modules

❐ Step 8: Install the bus bars

❐ Step 9: Install the Pulse Transformer and Switching Power Supply

boards

❐ Step 10: Install the Control EMI Shield and Control board

❐ Step 11: Replace the protective covers and document the change

Step 1: Remove Power

from the Drive

1. Remove and lock-out all incoming power to the drive.

ATTENTION: Remove power before making or breaking cable

connections. When you remove or insert a cable connector with

power applied, an electrical arc may occur. An electrical arc can

cause personal injury or property damage by:

• sending an erroneous signal to your system’s field devices,

causing unintended machine motion

• causing an explosion in a hazardous environment

Electrical arcing causes excessive wear to contacts on both the

module and its mating connector. Worn contacts may create

electrical resistance.

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Rockwell-automation 20P PowerFlex DC Drive - Frame A SCR Modules for D Manual do Utilizador Página 2