Rockwell Automation 20D PowerFlex 700H and 700S AC Drives Frame 9 Main Fan Capacitor Replacement Kit - Manual (Page 3)

Rockwell Automation Publication PFLEX-IN024B-EN-P - September 2011 3
PowerFlex 700H and 700S AC Drives Frame 9 Main Fan Capacitor Replacement Kit
Step: 1 Remove Power
from the Drive
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. Measure the DC bus voltage at the DC+ & DC- terminals on the power
terminal block. The voltage must be zero.
Step: 2 Remove the Lower
Protective Cover
• Remove the eight POZIDRIV screws that secure the bottom protective
cover to the drive and remove the cover. Tightening torque for re-assembly
is 3 N
• m (27 lb • in.).
ATTENTION: To avoid an electric shock hazard, verify that the voltage on
the bus capacitors has discharged before performing any work on the
drive. Measure the DC bus voltage at the DC+ & DC- terminals. The
voltage must be zero.
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.
L1 L2 L3
O
I
L1 L2 L3 L1 L2 L3 U/T1 V/T2 W/T3 U/T1 V/T2 W/T3