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, and the running
direction is determined by terminal REV. To stop the
running of the VFD, you need to disconnect terminal
SIn.
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