Mitsubishi Electric 800 Series Instruction Manual page 78

(b) Checking the inverter operating status by the inverter
operation ready completion signal
Operation ready signal (RY signal) is output when the
inverter power is ON and the inverter becomes
operative. Check if the RY signal is output after
powering ON the inverter.
(c) Checking the inverter operating status by the start
signal input to the inverter and inverter running signal
The inverter running signal (RUN signal) is output
when the inverter is running. (RUN signal is assigned
to terminal RUN in the initial setting.)
Check if RUN signal is being output while inputting a
start signal to the inverter. (STF signal is a forward
rotation signal, and STR is a reverse rotation signal.)
Even after the start signal is turned OFF, the RUN
signal is kept output until the inverter makes the motor
to decelerate and to stop. For the logic check,
configure a sequence considering the inverter's
deceleration time.
(d) Checking the motor operating status by the start signal input to the inverter and inverter output current detection signal
The output current detection signal (Y12 signal) is output when the inverter operates and currents flows into the motor.
Check if Y12 signal is being output while inputting a start signal to the inverter. (STF signal is a forward rotation signal,
and STR is a reverse rotation signal.) The Y12 signal is initially set to be output at 150% rated inverter current. Adjust
the level to around 20% using no load current of the motor as reference with Pr.150 Output current detection level.
Like the inverter running signal (RUN signal), even after the start signal is turned OFF, the Y12 signal is kept output until
the inverter stops the output to a decelerating motor. For the logic check, configure a sequence considering the
inverter's deceleration time.
Pr.190 to Pr.196 setting
Output
signal
Positive logic
ALM 99
RY 11
RUN 0
Y12 12
NOTE
• Changing the terminal assignment using Pr.190 and Pr.196 (Output terminal function selection) may affect the other
functions. Set parameters after confirming the function of each terminal.
Power
supply
STF
RUN
• When using various signals, assign the functions to Pr.190 and
Pr.196 (Output terminal function selection) referring to the
Negative logic
table on the left.
199
111
100
112
PRECAUTIONS FOR USE OF THE INVERTER
Failsafe system which uses the inverter
ON
ON
ON
RH
Pr. 13 Starting
frequency
Reset
processing
ON
RY
ON
OFF
OFF
DC injection brake
operation point
DC injection
brake operation
Time
OFF
OFF
3
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