Rockwell Automation DC3R Regenerative DC Drive User Guide 1/4 - 2 HP, 115/230 VAC - Manual (Page 37)

29 Calibration
ATTENTION: The DC3 Drive is intended to operate at a
predetermined minimum speed. If the application requires zero speed
operation, the user is responsible for assuring safe conditions for
operating personnel by providing suitable guards, audio or visual
alarms, or other devices. Failure to observe these precautions could
result in bodily injury.
ATTENTION: At very low input levels, noise or drift could cause
analog input polarity to change. This could cause the motor to rotate in
the opposite direction. Proper precautions should be taken as this could
result in damage to, or destruction of, the equipment.
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MIN SPD
The MIN SPD setting determines the minimum speed when the speed
adjust potentiometer is turned full CCW. It is factory set to zero speed.
IMPORTANT : The minimum speed feature applies only when the drive
is operating in unidirectional mode.
To calibrate, set the speed adjust potentiometer full CCW. Adjust the MIN
SPD trimpot until the motor turns at the desired minimum speed.
MAX SPD
The MAX SPD setting determines the maximum motor speed when the
speed adjust potentiometer is turned full CW. It is factory set for maximum
rated motor speed.
To calibrate, set the speed adjust potentiometer full CW. Adjust the MAX
SPD trimpot until the motor turns at the desired maximum speed.