Rockwell Automation 20-COMM-R Remote I/O Adapter - Manual (Page 42)

4-6 Using Discrete and Block Transfer I/O
20-COMM-R Remote I/O Adapter User Manual
Publication 20COMM-UM004D-EN-P
If parameter 82 - [Maximum Speed] is changed to 90 Hz, then:
90 Hz = 32767
Speed Feedback uses the same scaling as the speed Reference.
PowerFlex 700S and PowerFlex 700L Drives with 700S Control
The Reference/Feedback value is:
32767 = Base Motor Speed
The base speed is set using drive parameter 4 - [Motor RPM]. To set a speed
Reference/Feedback above base speed, a value greater than 32767 must be
entered.
For 16-bit processors, such as PLC-5 and SLC 500 controllers, the data
requires manipulation to set a speed Reference above 32767 or below
-32767. Please see the PowerFlex 700S AC Drives Phase II Control
Reference Manual, publication PFLEX-RM003, in the Chapter 1
‘Communications’ section. Then go to the ‘PLC 5 or SLC System’
subsection and see the ‘Reference/Feedback Programming’ sub-subsection.
PowerFlex 753/755 Drives
The Reference/Feedback value is Hz x 1000 or RPM x 1000. Drive
Parameter 300 - [Speed Units] determines whether the scaling is Hz or
RPM. The default scaling is Hz, where 0…60,000 equates to 0…60.000 Hz.
When Parameter 300 is set to RPM, then 0…1,765,000 equates to
0…1765.000 RPM.
For 16-bit processors, such as PLC-5 and SLC 500 controllers, the data
requires manipulation to set a speed Reference above 32767 or below
-32767. Please see the PowerFlex 700S AC Drives Phase II Control
Reference Manual, publication PFLEX-RM003, in the Chapter 1
‘Communications’ section. Then go to the ‘PLC 5 or SLC System’
subsection and see the ‘Reference/Feedback Programming’ sub-subsection.
PowerFlex Digital DC Drives
The Reference/Feedback value is:
25000 = Maximum Reference Speed
The maximum reference speed is set using drive parameter 45 - [Max Ref
Speed].
TIP: For PowerFlex 700 drives with vector control, firmware 3.xxx or later,
parameter 299 - [DPI Fdbk Select] enables you to select the feedback data
coming from the drive over DPI. The default is ‘Speed Fdbk’ in Hz or RPM
determined by Parameter 079 - [Speed Units]. The data selection for
parameter 299 is also displayed on the 1st line of the HIM and on
DriveExplorer and DriveExecutive software screens in the drive status area
of the screen.