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Section 6
Manual Tuning the Series 23H Control
Manually Tuning the Control
Current Prop Gain Parameter
Current INT Gain Parameter This parameter is located in the Level 1, Brushless Control Block. The factory setting is
Speed Prop Gain Parameter
MN723
In some applications the drive cannot be accurately auto-tuned. In these cases, it is
necessary to calculate the values needed to tune the drive and manually enter these
calculated parameter values.
This parameter is located in the Level 1, Brushless Control Block. The Current
Prop Gain parameter is normally autotuned when motor inductance is not known. Where
autotuning can't be used, the proper manual setting for the proportional gain can be
calculated by:
740 x L x A V
Current PROP Gain +
Where:
L = Line to neutral leakage inductance of the motor in mH
VAC = Nominal line volts
A/V = The amps/volt scaling of the current feedback
Motor line to neutral leakage inductance can be obtained either from the motor
manufacturer or for WYE connected motors, by measuring the line–to–line inductance
and dividing the measured value by two.
The A/V scaling for the controller can be found in the diagnostic information located in the
DISPLAY MODE.
For most applications setting the Current Prop Gain parameter to a value of 20 will yield
adequate performance.
suitable for essentially all systems. Do not change without factory approval.
The Speed Prop Gain parameter is located in the Level 1 Brushless Control Block. This
gain may be increased or decreased to suit the application. Increasing the Speed Prop
Gain parameter will result in faster response, excessive proportional gain will cause
overshoot and ringing. Decreasing the Speed Prop Gain parameter will cause slower
response and decrease overshoot and ringing caused by excessive proportional gain.
VAC
Manual Tuning the Series 23H Control 6-1
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Troubleshooting
