Rockwell Automation DC3N DC Drive User Guide, 1/4-2HP-115/230 VAC - Manual (Page 30)

22 Operation
Figure 12. Run/Decelerate to Minimum Speed Switch
Decelerating to minimum speed
The switch shown in Figure 12 may be used to decelerate a motor to a minimum
speed. Closing the switch between S1 and S2 decelerates the motor from set speed
to a minimum speed determined by the MIN SPD trimpot setting. If the MIN SPD
trimpot is set full CCW, the motor decelerates to zero speed when the switch
between S1 and S2 is closed. The DECEL trimpot setting determines the rate at
which the drive decelerates. By opening the switch, the motor accelerates to set
speed at a rate determined by the ACCEL trimpot setting.
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.
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