Rockwell Automation 7000A PowerFlex Medium Voltage AC Drive (A Frame) - ForGe Control - Manual (Page 95)

Rockwell Automation Publication 7000A-UM200C-EN-P - June 2014 95
Component Definition and Maintenance Chapter 3
D.C. Link / Fan / Control
Components
When the door is opened, control components are accessible. Behind the low
voltage swing-out panel is the medium voltage compartment where the DC link
and fan are located. The D.C. link is mounted on the floor plate of the cabinet
above the capacitors.
Power connections are made to the inductor via its flexible leads. There are four
power connection points labeled L+, L-, M+, and M-.
The D.C. link is equipped with thermal protection for the windings.
There is a current sensor on the M+ conductor.
The fan is located above the D.C. link; the primary elements of the fan are the
inlet ring, impeller and motor.
Figure 80 - DC Link and Fan Cabinet w/ low voltage control tub shown Figure 81 - DC Link and Fan Cabinet w/ low voltage control tub removed
Analog Drive
Control Board
Medium Voltage
Barrier (for
access to
Line/Motor
Capacitors)
Low voltage
Control Tub
Retaining
Hardware
AC/DC
Power
Supply
Fan
Inlet Ring
DC Link
Inductor
Grounding
Network/
Filter
Motor Filter
Capacitor
Line Filter
Capacitor
M+ L+ L- M-
IMPORTANT The inlet ring is stationary and must not contact the rotating impeller.