Mitsubishi FR-A800

(M) Monitor display and monitor output signal
PARAMETERS
389
5
GROUP
M
NOTE
• When pre-excitation is activated by the pre-excitation signal (LX), the RY2 signal turns ON 100 ms (500 ms for FR-A820-
03800(75K) or higher, FR-A840-02160(75K) or higher) after the LX signal turns ON. (When online auto tuning at start-up
(Pr.95 = "1") is selected, the ON timing is delayed by the tuning time.)
• According to the inverter condition, the ON/OFF operation of each signal is as shown below.
 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. (stays ON during operation.)
• When the inverter output frequency reaches Pr.13 Starting
frequency or higher, the output of Inverter running (RUN) turns
ON. The signal is OFF while the inverter is stopped, the DC
injection brake is operating, during tuning at start-up, or during
pre-excitation.
• The Inverter running 2 (RUN2) signal is ON while the inverter is
running or the start signal is ON. (When the inverter's protective
function is activated or the MRS is ON, the RUN2 signal turns
OFF.)
• The Inverter running and start command is ON (RUN3) signal
output is ON while the inverter is running or the start signal is
ON.
• The RUN2 and RUN3 signals also are ON when the start
command is ON and when pre-excitation is operating with the
speed command = 0. (However, the RUN2 signal is OFF during
pre-excitation operation activated by LX signal ON.)
• The Operation ready 2 (RY2) signal turns ON when the pre-
excitation starts. It stays ON while pre-excitation is operating
even when the inverter is stopped.
Output
signal
Start
signal
OFF
(during
stop)
Start
signal
ON

(pre-
excitation)
Start
signal
ON
(running)
LX
signal ON
(pre-
excitation)
DC injection
brake
operating
(pre-
excitation)
Output shutoff
Automatic restart after
instantaneous power failure
Coasting
Restarting
Start
signal
ON
Start
signal
OFF
Start
signal
ON
Start
signal
OFF
RY ON ON ON ON ON OFF ON ON
RY2 OFF
ON ON ON ON OFF OFF OFF
RUN OFF OFF
ON OFF OFF OFF OFF ON
RUN2 OFF
ON ON OFF OFF OFF OFF ON
RUN3 OFF
ON ON ON ON ON OFF ON OFF ON
 When the start signal is ON and the frequency command is 0 Hz, pre-excitation is entered.
 Turns OFF during power failure or undervoltage.
 A delay of 100 ms (500 ms for FR-A820-03800(75K) or higher, FR-A840-02160(75K) or higher) occurs when turned ON.
 Turns ON while the servo is ON (LX signal ON) under position control.
 Output is shutoff in conditions like a fault and when the MRS signal is ON.
 OFF while power is not supplied to the main circuit power supply.
Time
Power
supply
STF
RH
RY
RY2
Reset
processing
ON OFF
OFF
OFF
OFF
MRS
Pr. 13
RUN
RUN2
OFF
OFF
RUN3
OFF
Output frequency
ON
ON
ON
ON
ON
ON
ON
ON
Pre-excitation
(zero speed control)
100(500)ms
LX
RY2
ON
ON