Rockwell Automation PF700 Power Interface Board and SMPS Board Replacement - Frames 7, 8, 9, 10 - Manual (Page 6)

6 Publication 20B-IN22B-EN-P — December 2009
Preface
Safety Precautions The precautions and general installation requirements provided in the
PowerFlex 700 Frame 7-10 Installation Instructions (publication 20B-IN014)
and the PowerFlex 700 User Manual (publication 20B-UM002) must be
followed in addition to those included here.
1. Turn off and lock out input power. Wait five minutes.
2. Verify that there is no voltage at the drive’s input power terminals.
3. Check the DC bus voltage at the Power Terminal Block by measuring
between the +DC and –DC terminals, between the +DC terminal and
the chassis, and between the –DC terminal and the chassis. The voltage
must be zero for all three measurements.
ATTENTION
To avoid an electric shock hazard, ensure that all
power has been removed before proceeding. In
addition, before servicing, verify that the voltage on
the bus capacitors has discharged. Check the DC bus
voltage at the Power Terminal Block by measuring
between the +DC and -DC terminals, between the
+DC terminal and the chassis, and between the -DC
terminal and the chassis. The voltage must be zero
for all three measurements.
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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