Rockwell Automation DC3R Regenerative DC Drive User Guide 1/4 - 2 HP, 115/230 VAC - Manual (Page 46)

38 Application Notes
Independent Forward and Reverse Speeds with a
Forward-Stop-Reverse Switch
Figure 22. Independent Forward and Reverse Speeds with a
Forward-Stop-Reverse Switch
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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Use a single-pole, three-position switch to stop the motor when the switch
is in the center position ( Figure 22).