Mitsubishi 700 Series Instruction Manual page 79

Make a start and stop with terminals (External operation)
REMARKS
The motor will not rotate...Why?
Check that [EXT] is lit.
[EXT] is valid when Pr. 79 = "0" (initial value) or "2".
Use to lit [EXT].
Check that the AU signal is ON.
Turn the AU signal ON.
Check that wiring is correct. Check it again.
Change the frequency (0Hz) at the minimum current input (at 4mA, initial value)
Adjust the frequency in calibration parameter C5 Terminal 4 frequency setting bias frequency. (
Instruction Manual (Applied)).
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Refer to Chapter 4 of the