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Page 16
IronHorse GSD4A / GSD4 DC Drives User Manual – 2nd Ed. Rev. A – 10/14/2019
Start, Stop and Inhibit Operation (GSD4A Models)
When a Start/Stop action is required by means of a switch, the following hook-ups may be used to
achieve the necessary function. Starting and Stopping by means of the Inhibit pin (P13) will result in
a hard Start/Stop. Use of the Inhibit input bypasses the Accel and Decel ramps. Start/Stop actions via
the Wiper input signal (P12-W) will result in a soft Start/Stop. Refer to the diagrams below for several
methods of starting and stopping that may meet you application requirements.
“Soft” Start/Stop
P12 - LO
P12- W
P12 - HI
SPST
W
LO
HI
“
Soft” Start/Stop
Using a SPDT switch in series with the
Wiper input signal will give you a “soft”
Start/Stop (Closed = Run)
“Hard” Start/Stop
P12 - LO
P12 - W
P12 - HI
SPST
W
LO
HI
“Hard” Start/Stop
Using a SPDT switch connectedt to (P14) COM will
give you a “hard” Start/Stop (Open = Run)
P14
P13