Rockwell Automation Single Precharge Contactor Replacement Kit for LiquiFlo 2.0 AC Fr 3 Drive Ass'y - Manual (Page 3)

Instruction Manual D2-8100 3
Step 1: Disconnect Power
at the Branch Circuit Disconnect input power upstream of the drive assembly cabinet. Follow
required safety procedures to lock out circuit during the repair.
Step 2: Turn Off Drive
Cabinet Circuit Breaker Turn off the drive cabinet circuit breaker and open the drive cabinet doors.
Step 3: Verify that DC Bus
Capacitors are Discharged
!
ATTENTION: DC Bus capacitors retain hazardous voltages
after input power has been disconnected. After disconnecting
input power, wait five (5) minutes for the DC bus capacitors to
discharge and then check the voltage with a voltmeter to ensure
that the DC bus capacitors are discharged before touching any
internal components. Failure to observe this precaution could
result in severe bodily injury or loss of life.
Task Description
Turn off and lock out input power. Wait five minutes.
Verify that there is no voltage at the drive’s input power terminals.
Remove top cover.
Measure the DC bus potential with a voltmeter while standing on a non-conductive surface
and wearing insulated gloves (1000V).
A
B
C
D
L1 L2 L3
O
I
DC
Neg
(-)
DC
Pos
(+)
DC Bus Measurement Points on
Laminated Bus Assembly
(0.25 x 0.32 in. male Faston).
Accessible by removal of top cover.
Front View of Inverter Right Side View of Inverter
Top Cover (Removed)