Mitsubishi Electric FR-A820-00046 Instruction Manual page 448

(D) Operation command and frequency command
PU/External combined operation mode 2 (Pr. 79 = "4")
● Select the PU/External combined operation mode 2 when applying a frequency command from
the external potentiometer, or multi-speed and JOG signals, and inputting 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.
Fig. 5-112:
Switchover mode (Pr. 79 = "6")
PU, External and Network operation (when RS-485 terminals or communication option is used) can be
switched among during operation.
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
Tab. 5-101: Operation states in the switch-over mode
PU operation interlock (Pr. 79 = "7")
● The operation mode can be forcibly switched to the External operation mode by input of the PU
operation interlock (X12) signal. This function prevents the operation mode from being acciden-
tally unswitched from the PU operation mode. If the operation mode left unswitched from the PU
operation mode, the inverter does not reply to the commands sent through external commands.
● Set Pr. 79 = "7" (PU operation interlock).
● To input the X12 signal, set "12" in any of Pr. 178 to Pr. 189 (input terminal function selection) to
assign the function to a terminal. (For details on Pr. 178 to Pr. 189, refer to page 5-422.)
5 - 268
Frequency setting
potentiometer
Potentiometer
Combined operation mode 2
Operation switchover/Operating status
Set to the PU operation mode on the operation panel and parameter unit.
As the direction of rotation, the direction that was active by External operation is continued.
For the setting frequency, the setting of the potentiometer (frequency command) is
continued. (Note, however, that the setting disappears when the power is turned OFF or
when the inverter is reset.)
The switchover command to the Network operation mode is transmitted via communication.
As the direction of rotation, the direction that was active by External operation is continued.
The setting by the setting potentiometer (frequency command) is kept. (Note, however,
that the setting disappears when the power is turned OFF or when the inverter is reset.)
Press the External operation key on the operation panel and parameter unit.
The direction of operation is determined by the External operation input signal.
The setting frequency is determined by the external frequency command signal.
The switchover command to the Network operation mode is transmitted via communication.
For the direction of operation and setting frequency, the status during PU operation is
continued.
The switchover command to the External operation mode is transmitted via communication.
The direction of operation is determined by the External operation input signal.
The setting frequency is determined by the external frequency command signal.
Switch to the PU operation mode on the operation panel and parameter unit.
For the direction of operation and frequency, the status during Network operation is
continued.
Inverter
Operation panel
(FR-DU08)
10
2
5
Parameters
I002449E