Rockwell Automation DC3N DC Drive User Guide, 1/4-2HP-115/230 VAC - Manual (Page 40)

32 Application Notes
RUN/JOG switch
Using a RUN/JOG switch is recommended in applications where quick stopping is
not needed and frequent jogging is required. Use a single pole, two position switch
for the RUN/JOG switch, and a single pole, normally closed, momentary operated
pushbutton for the JOG pushbutton.
In the first wiring option, connect the RUN/JOG switch and JOG pushbutton to the
inhibit plug as shown in Figure 20. The motor coasts to a stop when the RUN/JOG
switch is set to JOG. Press the JOG pushbutton to jog the motor. Return the
RUN/JOG switch to RUN for normal operation.
ATTENTION: Starting and stopping with the inhibit terminal pins does not
disconnect AC power in the stop position. A hardwired AC power
disconnection switch must be mounted in close proximity to the operator’s
start/stop controls. This is required, as the DC3 drive does not have an armature
loop contactor. A single fault like a power device short may cause motor
rotation when in the stop mode. 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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Independent adjustable speeds
Replace the speed adjust potentiometer with a single pole, multi-position
switch, and two or more potentiometers in parallel, with a total parallel
resistance of 10K ohms. Figure 19 shows the connection of two
independent speed adjust potentiometers that can be mounted at two
separate operating stations.
If desired, you can use two 5K ohm or 10K ohm potentiometers in parallel;
however, the maximum speed adjust trimpot must then be recalibrated.
Refer to the Max Spd section of Calibration for more information.
Figure 19. Independent Adjustable Speeds