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 PU/External combined operation mode 2 (Pr.79 = "4")
• Select the PU/External combined operation mode 2 when giving a frequency command from the external potentiometer,
or using the multi-speed setting signals or the JOG signal, and giving a start command by key operation of the operation
panel or the parameter unit.
• Set "4" in Pr.79. The mode cannot be changed to other operation modes.
Frequency setting
potentiometer
Potentiometer
 Operation mode switchover during operation (Pr.79 = "6")
• During operation, the inverter operation mode can be switched from among the PU, External, and Network (Network
operation mode is selectable when RS-485 terminals or communication option is used).
Operation mode
switchover
External operation→PU
operation
External operation→NET
operation
PU operation→External
operation
PU operation→NET
operation
NET operation→External
operation
NET operation→PU
operation
 PU operation interlock (Pr.79 = "7")
• The operation mode can be forcibly switched to the External operation mode by turning OFF the PU operation external
interlock (X12) signal. This function will be usable in a case where the inverter does not reply to external command signals
during operation due to the operation mode accidentally unswitched from the PU operation mode to the External operation
mode.
• To input the X12 signal, set "12" in any of Pr.178 to Pr.189 (Input terminal function selection) to assign the function.
(For details on Pr.178 to Pr.189, refer to
• Set Pr.79 = "7" (PU operation interlock).
234
5. PARAMETERS
5.6 (D) Operation command and frequency command
Inverter
Operation panel
(FR-DU08)
10
2
5
Use the operation panel or parameter unit to change to the PU operation mode.
• The direction of motor rotation does not change due to the operation mode change from the External
operation mode.
• The previous setting of frequency which has been set using a potentiometer (frequency command) is taken
over. (However, note that the setting disappears when the power is turned OFF or when the inverter is reset.)
Give the command through communication to change the operation mode to the Network operation mode.
• The direction of motor rotation does not change due to the operation mode change from the External
operation mode.
• The previous setting of frequency which has been set using a potentiometer (frequency command) is taken
over. (However, note that the setting disappears when the power is turned OFF or when the inverter is reset.)
Press the key on the operation panel or parameter unit to change the operation mode to the External operation
mode.
• The direction of operation is determined by external input signals used in the External operation mode.
• The setting frequency is determined by the external frequency command signal.
Give the command through communication to change the operation mode to the Network operation mode.
• The direction of motor rotation and the frequency setting does not change due to the operation mode change
from the PU operation mode.
Give the command through communication to change the operation mode to the External operation mode.
• The direction of operation is determined by external input signals used in the External operation mode.
• The setting frequency is determined by the external frequency command signal.
Use the operation panel or parameter unit to change to the PU operation mode.
• The direction of motor rotation and the frequency setting does not change due to the operation mode change
from the Network operation mode.
page
355.)
Operation/operating status

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