Mitsubishi Electric FR-D720S SC EC Instruction Manual page 142

External operation
Example
Set "40Hz" in Pr. 4 "Multi-speed setting (high speed)" and turn on terminals RH and STF
(STR)-PC to operate.
Power on → operation mode check
For the initial setting, the inverter operates in the
external operation mode "EXT" when powering
on. Check that the operation command
indication is "EXT". If not displayed, press the
PU/EXT key to change to the external "EXT"
operation mode.
If the operation mode still does not change, set
Pr. 79 to change to the external operation mode.
(Refer to section 5.1.6).
Change the Pr. 4 setting to "40.00" (40.00Hz).
(Refer to section 4.3.8 for change of the setting.)
Turn on the high speed switch (RH).
Turn the start switch (STF or STR) on.
40Hz appears (30Hz appears when RM is on
and 10Hz appears when RL is on.)
"RUN" display is lit during forward rotation
operation and flickers during reverse rotation
operation.
Stop
Turn the start switch (STF or STR) off.
The motor stops according to Pr. 8
"Deceleration time".
Fig. 5-24: Operate the inverter by using external signals
5 - 34
Operation
ON
High speed
Middle speed
Low speed
ON
Forward rotation
Reverse rotation
ON
Forward rotation
Reverse rotation
OFF
Basic settings
Display
Stop
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