Rockwell-automation 20P PowerFlex DC Drive - Frame A Field SCR/Dual Di Manual do Utilizador descarregar pdf (Página 2)

2 PowerFlex® DC Drive - Frame A Field SCR/Dual Diode Bridge Module

What You Need to Do

The Field SCR/Dual Diode Bridge module is located on the heat sink of the

drive chassis. To install the new Field SCR/Dual Diode Bridge module:

❐ 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 existing Field SCR/Dual Diode Bridge module

❐ Step 6: Install the new Field SCR/Dual Diode Bridge module

❐ Step 7: Install the Pulse Transformer and Switching Power Supply

boards

❐ Step 8: Install the Control EMI Shield and Control board

❐ Step 9: 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 Field SCR/Dual Di Manual do Utilizador Página 2