Rockwell Automation 20P PowerFlex DC Drive - Frame A Field SCR/Dual Diode Bridge Module - Manual (Page 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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