Perform Frequency Setting By Analog Current Input - Mitsubishi Electric FR-D720S SC EC Instruction Manual

External operation
5.3.5

Perform frequency setting by analog current input

An external current source is connected to the frequency inverter for setpoint default setting.
● Switch terminal STF (STR)-PC on to give a start command.
● Turn the AU signal on.
● Pr. 79 "Operation mode selection" must be set to "2" (external operation mode).
Fig. 5-28: Frequency setting by analog current input
NOTE For the analog current input (0/4 to 20 mA) to become effective for setpoint default setting,
the AU signal on the AU terminal must be activated. This is done, for example, by means of
a bridge as shown in Fig. 5-28.
5 - 40
Power supply
Forward rotation start
Reverse rotation start
AU signal
Current signal
source
(0/4–20mA DC)
Inverter
Basic settings
Motor
I001094E