Mitsubishi Electric FR-D720S SC EC Instruction Manual page 328

Selection of operation mode and operation location
PU/external combined operation mode 1 (Pr. 79 = 3)
Select the PU/external combined operation mode 1 when applying frequency command from
the operation panel or parameter unit (FR-PU04/FR-PU07) and inputting the start command
with the external start switch.
Select "3" for Pr. 79. You cannot change to the other operation mode by using the PU/EXT-key.
When a frequency is input from the external signal by multi-speed setting, it has a higher priority
than the frequency setting of the PU. When AU is on, the terminal 4 is used.
PU/external combined operation mode 2 (Pr. 79 = 4)
Select the PU/external combined operation mode 2 when applying frequency command from
the external potentiometer, multi-speed or JOG signal and inputting the start command by key
operation of the operation panel (FR-PU04/FR-PU07).
Select "4" for Pr. 79. You cannot change to the other operation mode by using the PU/EXT-key.
potentiomer
6 - 178
Inverter
Forward
rotation start
STF
Reverse STR
rotation start
PC
Operation panel
Inverter
10
Frequency
2
setting
5
Operation panel
Fig. 6-94:
Combined operation mode 1
Fig. 6-95:
Combined operation mode 2
Parameter
I002087E
I002088E