Rockwell Automation DC3N DC Drive User Guide, 1/4-2HP-115/230 VAC - Manual (Page 34)

The DC3N chassis drive has six user adjustable trimpots: MIN SPD, MAX SPD,
TORQUE, IR COMP, ACCEL, and DECEL. Each drive is factory calibrated to its
maximum horsepower rating. Readjust the calibration trimpot settings to
accommodate lower horsepower motors.
All trimpot settings increase with clockwise (CW) rotation, and decrease with
counterclockwise (CCW) rotation. Use a non-metallic screwdriver for calibration.
Each trimpot is identified on the printed circuit board. Refer to Figure 15 for
locations.
26
Calibration
Figure 15. Calibration Trimpot Layout
MINIMUM
SPEED
MAXIMUM
SPEED
ACCELERATION
DECELERATION IR
COMP
TORQUE
ATTENTION: Dangerous voltages exist on the drive when it is powered, and
up to 30 seconds after power is removed and the motor stops. When possible,
disconnect the voltage input from the drive before adjusting the trimpots. If the
trimpots must be adjusted with power applied, use insulated tools and the
appropriate personal protection equipment. BE ALERT. High voltages can
cause serious or fatal injury.
ATTENTION: The control circuit is at line potential when the drive is
energized. Use a non-metallic screwdriver when making adjustments to the
circuit board potentiometers. Exercise extreme caution as hazardous voltage
exists. Failure to observe these precautions could result in severe bodily injury
of loss of life.
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