Baldor BSC 7107 DC manual Minimum Speed Adjustment, Adjusting Closed Loop Gain

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.

3-2 Adjustments