Mitsubishi Electric fr-e700 series, Instruction Manual

Page: 142 / 608

External operation Basic settings
5 - 30
5.3 External operation
When operating the inverter via external signals, the motor is started or stopped by external signals
connected to terminals STF and STR of the inverter. Just as when operating using the parameter unit,
the set frequency value may originate from various sources:
●
A fixed set value
Operation at the frequency set in the frequency setting mode of the PU. (Refer to section 5.3.1.)
●
Selection of stored set values by external signals
Give a frequency command by switch (multi-speed setting). (Refer to section 5.3.2).
●
Setpoint setting made by external analog signals
Frequency setting with a voltage output device (refer to section 5.3.3) or with a current output
device (refer to section 5.3.4)
5.3.1 Use the set frequency set by PU (Pr. 79 = 3)
●
Set "3" in Pr. 79 (External/PU combined operation mode 1).
●
Switch terminal STF (STR)-PC on to give a start command.
●
Refer to section 5.2.1 for the set frequency by the operation panel.
I001775E
Fig. 5-21: External operation
Power supply
Motor
Inverter
Forward rotation start
Reverse rotation start
Set frequency