SIn: 3-wire control; FWD: Forward running; REV:
Reverse running
3: 3-wire control mode 2. In this mode, SIn is
defined as the enabling terminal, the running
command is determined by the FWD or REV
terminal, and the direction is determined by the
FWD and REV terminals. When the VFD is
running, terminal SIn must be in the connected
state. Terminal FWD or REV generates a rising
edge signal to run the VFD and determine its
running direction. To stop the running of the VFD,
you need to disconnect terminal SIn.
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