Mitsubishi Electric FR-A820-00046 Instruction Manual page 588

(M) Monitor display and monitor output signal
– 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.
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.)
LX
RY2
● According to the inverter condition, the ON/OFF operation of each signal is as shown below.
Output
signal
RY
RY2
RUN
RUN2
RUN3
Tab. 5-146: Output signal output
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.
5 - 386
ON
100 (500) ms
ON
Start
Start Start
signal
signal signal
ON
OFF ON
(pre-
(during (run-
excita-
stop) ning)
tion)
ON ON ON
OFF ON ON
OFF OFF ON
OFF ON ON
OFF ON ON
LX
DC injec-
Output shutoff
signal
tion brake
ON
operating
(pre-
(pre-
Start
excita-
excitation)
signal
tion)
ON
ON ON
ON
ON
OFF
OFF
OFF
OFF
ON ON ON
Parameters
Automatic restart after
instantaneous power failure
Coasting
Start Start Start
signal signal signal
OFF ON OFF
OFF
ON
OFF OFF
OFF OFF
OFF OFF
OFF ON OFF
Restart-
ing
ON
OFF
ON
ON
ON