LEESON PWM DC Control: 174299 - Manual (Page 22)

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The MIN SPD setting determines the motor speed when the speed adjust potentiometer is turned full
CCW or when the BRAKE is closed. It is factory set for zero speed.
To Calibrate MIN SPD:
1. Close the BRAKE terminals.
2. Turn the MIN SPD trimpot clock-wise until the desired motor speed is reached (usually zero).
MINIMUM SPEED (MIN SPD)
The MAX SPD setting determines the motor speed when the speed adjust potentiometer is turned full
CW. It is factory set for maximum rated speed.
To Calibrate MAX SPD:
1. Set the MAX SPD trimpot full CCW.
2. Apply power to the drive and turn the speed adjust potentiometer full CW. If an input voltage signal
is used instead of a speed adjust pot, set the input signal to maximum.
3. Adjust the MAX SPD trimpot until the desired maximum motor speed is reached.
MAXIMUM SPEED (MAX SPD)
ACCELERATION (ACCEL)
The ACCEL setting determines the time the motor takes to accelerate to a higher speed. See
Specifications for approximate accelerating times. The ACCEL setting is factory set to its minimum
value (full CCW).
To Calibrate ACCEL:
1. Set the ACCEL trimpot full CCW.
2. Apply power to the drive and turn the main speed adjust potentiometer full CW. If an input voltage
signal is used instead of a speed adjust pot, set the input signal to maximum. Note the time that
the drive takes to accelerate to the desired speed.
3. Adjust the ACCEL trimpot until the desired acceleration time is reached. Turn the ACCEL trimpot
CW to increase the acceleration time, and CCW to decrease the acceleration time.