Rockwell Automation Publication 750-RM004A-EN-P - April 2018 27
Selection Considerations Chapter 1
The general recommendation is that all connected DC input common bus
inverters have their respective DC common mode (PE-B1) jumpers in the
disconnected (OUT) position when powered by a PowerFlex 755TM bus
supply. See the applicable sections of publication DRIVES-AT005
.
Circuit Protection
Branch circuit protection must be provided in accordance with all applicable
electrical codes (CEC/CSA/NEC) and any additional or equivalent local
electrical installation codes.
User-supplied protective device (fuse and circuit breaker) sizing may be
different between equivalent PowerFlex 700S and PowerFlex 755TL/TR
drives or PowerFlex 755TM common bus inverters. Verify that the existing
protective devices are suitable for use with the selected PowerFlex 755
products. It may be necessary to change the types and ratings of the existing
user-supplied protective devices with the new 755T products.
See the manuals for the PowerFlex 700S and PowerFlex 755T products,
publications 20D-TD002
and 750-TD100 respectively. Fuse and Circuit
Breaker Ratings selection tables to compare requirements for external
protective devices.
IMPORTANT There could be multiple PE-A2 jumpers depending on the frame size of the
PowerFlex 755TL/TR drive. Each LCL Filter roll-in assembly has a separate PE-
A2 jumper. All PE-A2 jumpers MUST be in the same position.
IMPORTANT There could be multiple PE-B1 jumpers depending on the frame size of the
PowerFlex 755TL/TR drive or PowerFlex 755TM common bus inverter. Each
IGBT power supply roll-in assembly has a separate PE-B1 jumper. All PE-B1
jumpers MUST be in the same position.
IMPORTANT If additional EMI filtering is specified by catalog code (-J) or (-K) in position
‘g’ of the catalog number and EMI filtering is required for EMC compliance,
then CM jumper PE-B1 may need to be connected (IN). It is important to
consider the EMC requirements and grounding configuration of the power
source. Certain power source grounding configurations may require removal
of the PE-B1 power jumpers. Please contact an Authorized Rockwell
Automation Distributor specialist, Solution Partner, Recognized System
Integrator or Rockwell Automation account manager to discuss EMC,
grounding and power jumper settings if your system does not match
Rockwell Automation recommendations.
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