How to scale values from 16 bit integers to floats with the AN-X2-AB-DHRIO gateway running the RIO DRV firmware
When migrating an old 1305 or 1336 drive to a new PowerFlex 753 or PowerFlex 755 drive it is necessary to scale some of the parameters. When scaling from an integer to a float the following formula is used to generate a multiplier which is then inserted into the RioDef template file.
Formula:
New Scale Maximum Value and divide it by the current maximum scaled value
Example:
Output Frequency as an input to the PLC or SLC
Maximum in the drive is 650.00
Maximum in the PLC or SLC is 32767
32767/650 = 50.41 I:1 <-
Feedback *50.41
Example:
Commanded Speed Reference as an input to the Drive
Maximum value in the drive is 13920
Maximum in the PLC or SLC is 32767
13920/32767 = .4248 O:1
*.4248
-> Reference
Article ID: 516
Created On: Mon, Aug 4, 2014 at 9:38 PM
Last Updated On: Mon, Aug 4, 2014 at 9:42 PM
Authored by: Administrator