230 VAC User Manual

Application Notes

Multiple fixed speeds

Replace the speed adjust potentiometer with series resistors with a total series

resistance of 5K ohm or 10K ohms (Figure 17). Add a single pole, multi-position

switch with the correct number of positions for the desired number of fixed speeds.

Figure 17. Multiple Fixed Speeds

Adjustable speeds using potentiometers in series

Replace the speed adjust potentiometer with a single pole, multi-position switch,

and two or more potentiometers in series, with a total series resistance of 10K

ohms. Figure 18 shows a connection for fixed high and low speed adjust

potentiometers.

If desired, you can use two 5K ohm or 10K ohm potentiometers in parallel;

however, the maximum speed adjust trimpot must then be recalibrated. Refer to

the Max Spd section (page 32) of Calibration for more information.

Figure 18. Adjustable Fixed Speeds Using

Potentiometers in Series