Mitsubishi Electric FR-D720S SC EC, Инструкция по эксплуатации

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Parameter Selection of operation mode and operation location
FR-D700 SC EC 6 - 179
Switch-over mode (Pr. 79 = 6)
While continuing operation, you can switch between the PU operation, external operation and
network operation (NET operation).
Operation Mode Switching Switching Operation/Operating Status
External operation
⇒
PU operation 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 potentiometer (frequency command) or like
is used unchanged.
(Note that the setting will disappear when power is switched off or the
inverter is reset.)
External operation
⇒
NET operation Send the mode change command to the network operation mode
through communication.
Rotation direction is the same as that of external operation.
The value set with the setting potentiometer (frequency command) or
like is used unchanged.
(Note that the setting will disappear when power is switched off or the
inverter is reset.)
PU operation
⇒
external operation Press the external operation key of the parameter unit.
The rotation direction is determined by the input signal of the external
operation.
The set frequency is determined by the external frequency command
signal.
PU operation
⇒
NET operation Send the mode change command to the network operation mode
through communication.
Rotation direction and set frequency are the same as those of PU oper-
ation.
NET operation
⇒
external operation 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 command
signal.
NET operation
⇒
PU operation Select the PU operation mode with the operation panel or parameter
unit.
The rotation direction and frequency command in the network opera-
tion mode are used unchanged.
Tab. 6-36: 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. 6-36 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 condi-
tions.