46 Rockwell Automation Publication 750-RM004A-EN-P - April 2018
Chapter 1 Selection Considerations
Cross Reference Guides
Use the following tables to compare output power, output current, overload
capacity, and dimensions for migrating your PowerFlex 700S drive to a
PowerFlex 755T product. Because of the wide variety of possible migration
options, we provide these tables as an example of how you can cross-reference
your PowerFlex 700S drive rating to an equivalent PowerFlex 755T product.
Shaded rows in the tables indicate that, unless noted otherwise, a suitable
PowerFlex 755T migration product may be available.
Follow this procedure when using the tables.
1. Find the existing PowerFlex 700S input voltage (AC or DC), voltage
class, overload rating (ND or HD), and catalog number.
2. Use the row in the electrical rating cross-reference table with your
PowerFlex 700S to see the catalog number and ratings of a suitable
migration solution to PowerFlex 755T product.
3. Note the catalog number of the PowerFlex 755T product.
4. See the AC Input Dimensional Cross Reference
on page 56 or DC
Input Dimensional Cross Reference on page 61 to see if the new drive is
dimensionally compatible.
Reference all applicable footnotes at the end of each section.
AC Input Electrical Cross-reference
The following four tables are used to cross-reference 6-pulse, 400/480/600/
690V AC input PowerFlex 700S drives to either PowerFlex 755TL Low
Harmonic or PowerFlex 755TR Regenerative AC input drives.
Although PowerFlex 755T light duty (LD) ratings are available, these ratings
are not shown because there are no equivalent light duty ratings for PowerFlex
700S drives.
Use Table 1 5
to help decide whether you need a Low Harmonic or
Regenerative PowerFlex 755T AC drive.
Table 15 - Suggested Migration Solution
Existing PowerFlex 700S Configuration Suggested PowerFlex 755T AC Drive Solution
Separate Braking Chopper and Brake Resistor PowerFlex 755TL drive
The existing Brake Chopper and Resistor must be reused
--- OR ---
PowerFlex 755TR drive
The existing Brake Chopper and Resistor must be removed
This option is preferred due to the potential energy savings compared to wasting regenerative energy as heat in the braking
resistor.
Separate Regen Unit PowerFlex 755TR drive
The existing Regen Unit must be removed
Separate DC bus supply or active front end
converter
PowerFlex 755TM common bus inverter (DC input)
The PowerFlex 700S DC input drive is fed from the external DC bus supply rectifier/converter. See DC Input Electrical Cross
Reference on page 51.
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