Mitsubishi Electric FR-A800, Instruction Manual

Page: 549 / 1042

Parameters (M) Monitor display and monitor output signal
FR-A800 5 - 369
– 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.
●
According to the inverter condition, the ON/OFF operation of each signal is as shown below.
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.
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.)
Output
signal
Start
signal
OFF
(during
stop)
Start
signal
ON
(pre-
excita-
tion)
Start
signal
ON
(run-
ning)
LX
signal
ON
(pre-
excita-
tion)
DC injec-
tion brake
operating
(pre-
excitation)
Output shutoff
,
Automatic restart after
instantaneous power failure
Coasting
Restart-
ing
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
Tab. 5-142: Output signal output
LX
RY2 ON
ON
100 (500) ms