Rockwell Automation 7000A PowerFlex Medium Voltage AC Drive (A Frame) - ForGe Control - Manual (Page 114)

114 Rockwell Automation Publication 7000A-UM200C-EN-P - June 2014
Chapter 3 Component Definition and Maintenance
Control Power Components There are two configurations in which control power will be distributed for the
drive. The different methods are dependent on what drive option the customer
has chosen:
1. Direct-to-Drive (transformerless AFE rectifier) ( Figure 93 )
2. AFE rectifier with separate isolation transformer ( Figure 94 ).
3. AFE rectifier with integral isolation transformer ( Figure 95 ).
Ride-Through
Standard controls with 5 cycle ride-through – The drive main control boards
will remain energized for a total of 5 cycles after control power is interrupted. If
control power is not restored during the 5 cycles, a controlled shutdown will
occur.
Figure 93 illustrates the control power distribution for AFE drives with integral
starter/line reactor.
Figure 93 - Direct-to-Drive (transformerless AFE rectifier)
Printer
Operator Interface
Relays
DC/DC CONVERTER
VFD
AC/DC Converter
56V DC
600W/1000W/
1500W
+5V-LOGIC
+/-15V-LOGIC
+/-24V-HECS
+24V-ISOLATORS
+24-XIO
SENSE CABLE
20V
C Hold-up
Fan
20V Isolated
Gate Driver
Power Supply
380V 50Hz
or
460V 60Hz
3-ph
DC Fail
Fuse
Line
Reactance
120V
1-ph
Inverter only for SPS Drives