Mitsubishi Electric FR-A800 Series Instruction Manual page 481

• The Inverter running and start command ON (RUN3) signal is ON while the inverter is running or while the start command
signal is ON (When the start command signal is ON, the RUN3 signal is ON even while the inverter's protective function
is activated or while the MRS signal is ON.) The RUN3 signal is ON even during the DC injection brake operation, and the
signal is OFF when the inverter stops.
Power ON
supply
STF
RH
Reset
processing
RY
RUN
(RUN2)
RUN3
• The ON/OFF state of each signal according to the inverter operating status is shown in the matrix below.
Start signal
Output
OFF (inverter
signal
stopped)
*3
ON
RY
RY2 OFF
RUN OFF
RUN2 OFF
RUN3 OFF
*1 The signal is OFF during power failure or undervoltage.
*2 This means the state during a fault occurrence or while the MRS signal is ON, etc.
*3 The signal is OFF while power is not supplied to the main circuit.
 Operation under Real sensorless vector control, Vector control, and PM sensorless vector
control
• When the inverter is ready for operation, the Inverter operation ready (RY) signal turns ON (and stays ON during
operation).
• When the inverter output frequency reaches the setting of Pr.13 Starting frequency or higher, the Inverter running (RUN)
turns ON. The signal is OFF during an inverter stop, during the DC injection brake operation, during tuning at start-up, or
during pre-excitation.
• The Inverter running 2 (RUN2) signal is ON while the inverter is running or while the start command signal is ON. (When
the inverter's protective function is activated or the MRS signal is ON, the RUN2 signal turns OFF.)
• The Inverter running and start command ON (RUN3) signal is ON while the inverter is running or while the start command
signal is ON.
• The RUN2 and RUN3 signals are also ON when the start command signal is ON or during pre-excitation with the speed
command value 0. (However, the RUN2 signal is OFF during pre-excitation with the LX signal ON.)
480
5. PARAMETERS
5.11 (M) Item and output signal for monitoring
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ON
OFF
ON
DC injection brake
operation point
DC injection
brake
operation
Pr. 13
ON
ON
OFF
ON
OFF
Start signal
Start signal
ON
ON (inverter
(inverter
stopped)
running)
ON ON
OFF OFF
OFF ON
OFF ON
ON ON
search engine
OFF
Time
OFF
Inverter output
During DC
*2
shutoff
injection
brake
Start
operation
signal ON signal OFF
ON OFF
OFF OFF
OFF OFF
OFF OFF
ON ON OFF
Automatic restart after
instantaneous power failure
During coasting
Start Start Start
signal ON signal OFF
*1
ON
OFF
OFF
OFF
ON OFF
Inverter
running
after
restart
ON
OFF
ON
ON
ON