Mitsubishi Electric FR-A820-00046 (0.4K) Instruction Manual page 459

• The Operation ready 2 (RY2) signal turns ON when the pre-excitation starts. The signal is ON during pre-excitation even
while the inverter stops its output. The signal is OFF during the inverter output shutoff.
Power
ON
supply
STF
RH
MRS
Pre-excitation
(zero speed control)
Reset
processing
RY
RY2
RUN
RUN2
RUN3
NOTE
• When pre-excitation works with thePre-excitation/servo ON (LX) signal ON, the RY2 signal turns ON after 100 ms (500 ms for
FR-A820-03800(75K) or higher, FR-A840-02160(75K) or higher) from the time the LX signal turns ON. (When online auto
tuning at start-up is selected (Pr.95 = "1"), the time the signal turns ON is delayed by the tuning time.)
LX
RY2
• The ON/OFF state of each signal according to the inverter operating status is shown in the matrix below.
Start
signal
Output
OFF
signal
(inverter
stopped)
*6
ON
RY
RY2 OFF
RUN OFF
RUN2 OFF
RUN3 OFF
*1 When the start signal is ON and the frequency command is 0 Hz, such state is designated as "during pre-excitation".
*2 The signal is OFF during power failure or undervoltage.
*3 The RY2 signal turns ON after 100 ms (500 ms for FR-A820-03800(75K) or higher, FR-A840-02160(75K) or higher) from the time the LX signal
turns ON.
*4 The signal is ON while the servo-lock function is ON (the LX signal is ON) in the position control mode.
*5 This means the state during a fault occurrence or while the MRS signal is ON, etc.
*6 The signal is OFF while power is not supplied to the main circuit.
458
5. PARAMETERS
5.11 (M) Item and output signal for monitoring
ON
ON
ON
Pr. 13
ON OFF
ON OFF
ON OFF
ON OFF
ON OFF
ON
100(500)ms
ON
LX signal
Start signal Start
*1
ON (during signal ON
pre- (inverter
excitation) running)
excitation)
ON ON ON
ON ON
ON
OFF ON
OFF
ON ON
OFF
ON ON ON
OFF
OFF
Time
During DC
Inverter output
injection
ON brake
(during operation
pre- (during
Start
pre-
signal ON
excitation)
ON OFF
*3
ON OFF
*4
OFF OFF
*4
OFF OFF
ON ON
Automatic restart after
instantaneous power failure
*5
shutoff
During coasting
Start Start
signal signal
OFF ON
*2
ON
OFF
OFF
OFF
OFF ON OFF
Inverter
running
Start
after
signal
restart
OFF
ON
OFF
ON
ON
ON