Rockwell Automation Publication 750-RN034B-EN-P - November 2014
15
PowerFlex 753 Drives (revision 10.003)
Enhancements
This section describes the enhancements included in this revision.
Scratch Pad and Scale Block Parameters for Options Developer Toolkit
This revision of drive firmware adds parameters to support the options developer
toolkit. The additions include “User Data” integer [1700-1731], “User Data”
floating point [1800-1831], and “Scale Block” integer/floating point [1900-
1931].
Drive Performance Parameter Updates
With this revision of drive firmware two parameters have been updated to
increase performance. First, the maximum limit of the “Notch Filter
Attenuation” [688] has been increased to 1000. The previous limit was 500.
Second, the maximum limit of the “Position KI Limit” [838] has been increased
to 12500. The pervious limit was 2500.
Corrected Anomalies
This section describes the anomalies corrected in this revision.
High Torque with IPM Motors
This revision of drive firmware increases the max allowable percentage of motor
toque for IPM motors. The calculation for torque in previous firmware revisions
did not accommodate for the derived formula used with IPM motors which have
different
d
and
q
inductance values. This limited the max percentage of motor
torque that could be applied to 150%. With this release of drive firmware, the
derived calculation for IPM motors has been updated to enable IPM motors to
calculate up to 250% of motor torque within the drive.
Fatal Exception 917 for Low Power Drives
A fatal 917 exception is a FPGA CRC fault. This fault occurs when the FPGA
on the main control board experiences a soft error and is in place to prevent
potential changes in drive performance. Previous revisions of drive firmware
would require a power cycle of the drive when the fault occurs. With this revision
of drive firmware the default fault behavior remains the same, but can be
configured if the default behavior is undesirable. The “CRC Fault Config” [964]
parameter can be configured as a response to this drive behavior.
