100 Rockwell Automation Publication 750-RM004A-EN-P - April 2018
Chapter 2 Drive Configuration
Standalone Drive
Configuration
The PowerFlex 700S drive is typically used as part of a high-performance drive
system that is controlled by a PLC or automation controller with the
PowerFlex 700S drives connected on a communication network. To obtain the
highest performance, the PowerFlex 700S was configured for flux vector motor
control with motor encoder feedback.
Chapter 3
covers communication configurations in more detail.
This section covers a basic standalone application where the drive is controlled
by digital I/O and analog speed reference with encoder feedback.
The PowerFlex 700S has standard digital and analog I/O and encoder inputs
on the main control board as shown on page 66
. Applications that use the
PowerFlex 700S DriveLogix expansion and associated optional I/O are not
covered in this migration guide.
Review your current PowerFlex 700S drive digital and analog I/O
configurations, and determine the required PowerFlex 755T I/O option
modules and associated parameters you will need to configure to build a
functional PowerFlex 755T product migration solution. See these
programming manuals to help you understand and identify the different drive
configuration and programming options:
• PowerFlex Drive with TotalFORCE Control Programming Manual,
publication 750-PM100
• PowerFlex 700S AC Drive with Phase II Control Programming Manual,
publication 20D-PM001
Example, Three-wire Control with Analog Speed Reference and
Encoder Feedback
This section provides a common example of the PowerFlex 700S drive using a
potentiometer analog speed reference along with hard-wired start/stop/
direction control, and the equivalent PowerFlex 755T product configuration.
The 3-wire control method is start/stop/direction. The digital control inputs
use the internal 24V DC supply of the drive, and the analog speed reference
uses a 10,000 Ohm potentiometer that is wired to the internal 10V DC power
supply of the drive. The encoder device uses the internal 12V DC supply of the
drive.
For this example, the PowerFlex 750-Series single encoder option is shown in
slot/port 5 and the I/O option module is shown in slot/port 4. These option
modules can be installed in any valid slot/port.
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