Mitsubishi Electric FR-D720S SC EC Instruction Manual page 93

Operation
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 be-
comes operative. Check if the RY signal is output after powering on the inverter.
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 as-
signed to terminal RUN in the initial setting).
Check if RUN signal is output when inputting the start signal to the inverter (forward signal is STF
signal and reverse signal is STR signal). For logic check, note that RUN signal is output for the
period from the inverter decelerates until output to the motor is stopped, configure a sequence
considering the inverter deceleration time.
Fig. 4-3: Ready status and motor running
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 cur-
rents flows in the motor. Check if Y12 signal is output when inputting the start signal to the in-
verter (forward signal is STF signal and reverse signal is STR signal).
Note that the current level at which Y12 signal is output is set to 150% of the inverter rated cur-
rent in the initial setting, it is necessary to adjust the level to around 20% using no load current
of the motor as reference with Pr. 150 "Output current detection level".
For logic check, as same as the inverter running signal (RUN signal), the inverter outputs for the
period from the inverter decelerates until output to the motor is stopped, configure a sequence
considering the inverter deceleration time.
FR-D700 SC EC
Power supply
ON
STF
RH
Pr. 13 "Starting frequency"
Reset processing
RY
RUN
Precautions for use of the inverter
ON OFF
ON
DC injection brake
operation point
DC injection
brake operation
ON
OFF
ON
OFF
Time
OFF
I001878E
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