Mitsubishi Electric FR-A800 Series Instruction Manual page 482

• 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
supply
STF
RH
MRS
Pre-excitation
(zero speed control)
processing
RY
RY2
RUN
RUN2
RUN3
NOTE
• When pre-excitation works with the Pre-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.)
• 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.
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ON
ON
ON
Pr. 13
Reset
ON
ON
ON
ON
ON
LX
ON
100(500)ms
RY2
ON
Start signal Start
*1
ON (during signal ON
pre- (inverter
excitation) running)
ON ON
ON ON
OFF ON
ON ON
ON ON
search engine
OFF
OFF
ON
Time
OFF
OFF
OFF
OFF
OFF
During DC
injection
LX signal
brake
ON (during
operation
pre-
(during
excitation)
pre-
signal ON
excitation)
ON ON OFF
*3
ON OFF
ON
*4
OFF OFF
OFF
*4
OFF OFF
OFF
ON ON ON
Automatic restart after
Inverter output
instantaneous power failure
*5
shutoff
During coasting
Start Start
Start
signal signal
OFF ON
*2
ON
OFF
OFF
OFF
OFF ON
5.11 (M) Item and output signal for monitoring
1
2
3
4
5
6
7
8
9
10
Inverter
running
Start
after
signal
restart
OFF
ON
ON
ON
ON
OFF ON
481
5. PARAMETERS