Rockwell Automation GV3000/SE AC Gen. Purpose and Vector Drive Software Start-Up and Ref. Manual - Manual (Page 214)

G-4 GV3000/SE AC Drive Software Reference, Version 6.06
To adjust the offset (P.009):
Step 1. Verify that the analog input is configured as the speed reference control
source (P.000 = rE or LOCL and AUTO is selected), P.008 = 0, and
U.000 = 0).
Step 2. Display the converted value of the analog input using the selected speed
reference display mode. (Refer to chapter 3 for the procedure for displaying
the selected speed reference.)
Step 3. Adjust P.009 to achieve the value of minimum speed when the analog input is
set to the position where minimum speed is desired.
The gain parameter is typically used to compensate for saturation or insufficient
voltage from the input source.
Unless the input is a 4 to 20 mA signal, before adjusting the gain, set P.011 to 0 to
avoid clamping the reference at 0. After adjusting P.009 and P.010, change P.011 to
reflect the intended input.
To adjust the gain (P.010):
Step 1. Verify that the analog input is configured as the speed reference control
source (P.000 = rE or LOCL and AUTO is selected), P.008 = 0, and U.000 =
0).
Step 2. Display the converted value of the analog input using the selected speed
reference display mode. (Refer to chapter 3 for the procedure for displaying
the selected speed reference.)
Step 3. Adjust P.010 to achieve the value of maximum speed when the analog input
is set to the position where maximum speed is desired. For example, if a
speed pot is used, rotate the pot to its maximum position.
The adjustment range for P.010 is 0.100 to 5.000.
G.3 Using the Analog Input for Vector Torque Reference
(U.000 = 1)
When the analog input is used as the vector control torque reference (U.000 = 1), the
analog input value will be interpreted internally as shown in table G.2 and described
below. Note that P.009 and P.010 are not used when U.001 = 1. Parameter P.011 is
used only to enable the analog input signal loss detection feature.
• The maximum positive analog input value (+10 VDC or 20 mA) corresponds to the
positive torque limit of the drive (+150% of the rated motor torque).
Table G.2 – Analog Input Conversion Scaling for Torque Reference
Analog Input
Value Corresponding Internal Value
+10 VDC (20 mA) Positive torque limit of the drive. (+150% of the rated motor
torque.
0 VDC (0 mA) Zero torque reference.
-10 VDC Negative torque limit of the drive (-150% of the rated motor
torque.)