Mitsubishi Electric FR-D720-0.1K Instruction Manual page 240

Setting the parameter unit and operation panel
REMARKS
If the display changes from flickering "60.00" to "0.00", the setting of Pr. 161 Frequency setting/key lock operation selection may not
be "1".
Independently of whether the inverter is running or at a stop, the frequency can be set by merely turning the dial.
When the frequency is changed, it will be stored in EEPROM as the set frequency after 10s.
NOTE
When setting frequency by turning setting dial, the frequency goes up to the set value of Pr.1 Maximum frequency
(initial value: 120Hz). Adjust Pr.1 Maximum frequency setting according to the application.
(2) Disable the setting dial and key operation of the operation panel (Press [MODE] long (2s))
Operation using the setting dial and key of the operation panel can be invalid to prevent parameter change, and
unexpected start or frequency setting.
Set "10 or 11" in Pr. 161, then press
When the setting dial and key operation are invalid,
attempted while dial and key operation are invalid,
display appears.)
To make the setting dial and key operation valid again, press
REMARKS
Even if the setting dial and key operation are disabled, the monitor display and
NOTE
Release the operation lock to release the PU stop by key operation.
238
for 2s to make the setting dial and key operation invalid.
appears on the operation panel. If dial or key operation is
appears. (When dial or key is not touched for 2s, monitor
for 2s.
are valid.