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Ac/dc power supply – Rockwell Automation 7000A PowerFlex Medium Voltage Drive (A-Frame) - Classic Control User Manual

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Component Definition and Maintenance

7000A-UM150F-EN-P –June 2013

7000 “A” Frame

AC/DC Power Supply

The load demands on the AC/DC converters are the DC/DC converter and
up to six IGDPS modules. The DC/DC is a fixed load; however, the
quantity of IGDPS modules will vary depending upon the drive
configuration.

Description

The AC/DC power supply accepts single phase voltage and produces a
regulated 56Vdc output for the DC/DC power supply and the HV IGDPS
modules for the SGCTs. The input and output voltages are monitored and
fail signals are annunciated upon either voltage going below a pre-set
level.

Single phase

95-265V ac

47-63 Hz

0.95 PF @ 1500 W

DC

FAIL

AC

FAIL

AC/DC

Power Supply

56V, 1500 W

4

DC/DC

Power

Supply

HV IGDPS

Power

Supply

Figure 6.57 – AC/DC Converter Power Supply


AC FAIL:

Upon loss of AC line (V input ≤ 90 VAC), this open collector
output goes from low to high before loss of output regulation.

DC FAIL:

Upon loss of DC output (V outputs ≤ 49 VDC) this output goes
from low to high.