Rockwell Automation GV3000/SE AC Gen. Purpose & Vector Bookshelf Drive Start-Up and Reference Manual - Manual (Page 118)

4-32 GV3000/SE AC Bookshelf Drive Software Reference, Version 6.06
P.028 Speed Display Scaling (continued)
For V/Hz regulation, P.028 will correspond to H.001:
Actual Speed in Hz x P.028 = value displayed when speed monitor mode
H.001 or selected reference is selected
Note that the values entered for P.003 and P.004 are automatically converted to P.028
units by the system. Therefore, the adjustment range for the manual reference is
limited as follows:
For vector regulation:
Minimum reference = P.003 x P.028 Maximum reference = P.004 x P.028
U.017 U.017
For V/Hz regulation:
Minimum reference = P.003 x P.028 Maximum reference = P.004 x P.028
H.001 H.001
Important: This parameter does not change the speed. It changes only the scaling
value applied to the display.
V/Hz Speed Display Scaling Example
Your application requires the display to be scaled to show the speed reference or
the output speed as 800 gallons/minute when operating at maximum speed.
H.001 (Motor Nameplate Base Frequency) = 60
Step 1. Set parameter P.028 = 800
Step 2. Enter speed monitor mode by pressing the PROG key until the PROG LED
turns off and the RPM LED turns on.
Step 3. Start the drive (press the START key).
Step 4. When the drive is running at half of rated speed, the display shows that
speed is 400 (gallons/minute).
Using the equation for V/Hz regulation: 30 x 800 = 400
60