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3-2 Adjustments
Minimum Speed Adjustment
1. Set the Speed Pot to zero speed (fully CCW).
2. Set the MIN pot on the upper board (Figure 2-2) fully CCW.
3. Apply power to the control.
4. Slowly rotate the MIN CW until the motor begins to rotate. Then
turn the pot CCW until the motor just stops. The control will now
run with a near–zero deadband.
5. If a non–zero minimum speed is desired, rotate the MIN pot CW to
the desired minimum speed setting.
Adjusting Closed Loop Gain
1. Set the MAX pot on the upper board (Figure 2-2) to the
approximate position shown in the figure.
2. Set the Speed Pot to maximum speed (fully CW).
3. Set the “Closed Loop Gain” pot (Figure 2-2) to its’ fully
CCW position.
4. Apply power to the control. The motor should operate at full speed.
If not, adjust the MAX pot setting until full motor speed is obtained.
5. Adjust the “Closed Loop Gain” pot CW until the motor speed
decreases slightly.
Note: If the “Closed Loop Gain” pot is fully CW and the motor speed
does not decrease, rotate the MAX pot CCW just enough to
make the motor speed decrease slightly. Then adjust the
“Closed Loop Gain” pot CCW just enough so the motor runs at
full speed.