Mitsubishi Electric FR-A700 Instruction Manual page 602

Frequency inverter
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Selection of operation mode and operation location
Switch-over mode (Pr. 79 = 6)
While continuing operation, you can switch between the PU operation, external operation and
network operation (when RS-485 terminals or communication option is used).
Operation Mode Switching
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. 6-118: Operation states in the switch-over mode
m
WARNING:
When using switch-over mode please note that in some switch-over operations the
rotation direction command and the frequency setting value are "transferred" to the
"new" operating mode (refer to Tab. 6-118 for details). When this happens the drive
will run in the new operating mode even though it has not (yet) received any control
commands.
It is extremely important to take this into account and take the necessary steps to
ensure that performing these switch-over operations cannot cause hazardous
conditions.
6 - 422
Switching Operation/Operating Status
Select the PU operation mode with the operation panel or parameter
unit.
Rotation direction is the same as that of external operation.
The frequency set with the volume (frequency setting potentiometer) or
like is used unchanged.
(Note that the setting will disappear when power is switched off or the
inverter is reset.)
Send the mode change command to network operation mode through
communication.
Rotation direction is the same as that of external operation.
The value set with the setting volume (frequency setting potentiometer)
or like is used unchanged.
(Note that the setting will disappear when power is switched off or the
inverter is reset.)
Press the external operation key of the operation panel, parameter unit.
The rotation direction is determined by the input signal of the external
operation.
The set frequency is determined by the external frequency setting
signal.
Send the mode change command to network operation mode through
communication.
Rotation direction and set frequency are the same as those of PU oper-
ation.
Command to change to external mode is transmitted by communica-
tion.
Rotation direction is determined by the external operation input signal.
The set frequency is determined by the external frequency setting
signal.
Select the PU operation mode with the operation panel or parameter
unit.
The rotation direction and set frequency signal in network operation
mode are used unchanged.
Parameter

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