|The figure on the left shows the layout of a
sample circuit for a multi-speed operation with a Mitsubishi PLC.
The PLC is equipped with a digital output module AY80.
To prevent wrap-arounds, the output modules common pin 10 for
preventing wrap-arounds must be connected to inverter terminal SD.
A variety of functions for the inverters transistor output signals (RH,
RM, STOP ect.) are selectable using parameter 180 to 183. The
inverter output signals, however can be received at a seperate digital
Up to 15 speeds can be set with the multi-speed setter, but an
additional two speeds can be obtained by shorting terminals 10 and 2 for
an upper limit frequency setting (Pr.1) and terminals 2 and 5 for a lower
limit frequency setting (Pr.2)