important because of the interdependency of these functions. See Table 6. The settings should
be made in the following sequence:
Potentiometer Adjustment
Note: All potentiometers are factory set. The following information is provided for reference.
Adjustment potentiometers are nearly linear. To make an initial setting, determine the
percentage of the potentiometer rotation. Use the following formula to calculate the percent of
rotation. See Figure 32 and Figure 33.
Example: Starting current is adjustable between 100% and 400% of motor full load current.
The initial setting for 200% starting current is as follows:
% of rotation =
(desired setting) – (minimum setting)
(maximum setting) – (minimum setting)
% of rotation =
(200%) – (100%)
= 1/3
of full rotation (33%)
(400%) – (100%)
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