Rockwell Automation 7000L PowerFlex Medium Voltage AC Drive (C Frame) - Classic Control - Manual (Page 400)

6-56 Component Definition and Maintenance
7000L-UM300I-EN-P – June 2013 7000 “C” Frame
The installer needs to verify that the DC Link power connectors go
to the proper locations. You must also ensure that they are routed
the same way so that electrical clearances are not compromised.
The nameplate data must be compared to the old DC Link to ensure
that the ratings are appropriate for the drive system. Any changes in
the nameplate should be noted since the parameters within the drive
will need to be changed.
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. Standard control with 5 cycle ride-through, or
2. Standard control with extended ride-through capabilities.
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.
Standard controls with extended ride-through capabilities – The
drive controls will remain energized for an extended period time
greater than 5 cycles after control power is interrupted. The length
of time the boards will remain energized is dependent on the capacity
of the UPS and power consumption of loads connected to the UPS.
Figure 6.45 illustrates the control design with standard offering and 5
cycle ride-through. The ride-through is provided by the hold-up
capacitors on the output of the AC/DC converter. The stored energy
in the capacitors is sufficient to maintain 56 V supply to the DC/DC
and IGDPS loads for 5 cycles. Other loads such as the printer,
PV550, pilot lights, relays, etc. will remain in the same state prior to
interruption of control power.