Rockwell Automation DC3R Regenerative DC Drive User Guide 1/4 - 2 HP, 115/230 VAC - Manual (Page 24)

16 Installation
Speed adjust potentiometer connections
Figure 8. Speed Adjust Potentiometer Connections for (a)
Unidirectional Operation, and (b) Bidirectional Operation
(a)
(b)
The motor can operate in one direction (unidirectional) or in two directions
(bidirectional) depending on how the speed adjust potentiometer is
connected to the drive.
Connect the speed adjust potentiometer as shown in Figure 8(a) for speed
control in one direction.
Connect the speed adjust potentiometer as shown in Figure 8(b) for speed
control in two directions. The motor does not rotate when the wiper is in
the center position. Turning the wiper CW from the center position causes
the motor to rotate in one direction, while turning the wiper CCW from the
center position causes the motor to rotate in the opposite direction.
Refer to the Application Notes section for additional speed adjust
potentiometer connections.
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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