Mitsubishi Electric fr-e700 series, Инструкция по эксплуатации

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Precautions for use of the inverter Operation
4 - 6
Output terminal function assignment
When using various signals, assign functions to Pr. 190 to Pr. 192 (output terminal function selection)
referring to the table below.
Backup method outside the inverter
Even if the interlock is provided by the inverter status signal, enough failsafe is not ensured depend-
ing on the failure status of the inverter itself. For example, even if the interlock is provided using the
inverter fault output signal, start signal and RUN signal output, there is a case where a fault output sig-
nal is not output and RUN signal is kept output even if an inverter fault occurs. Provide a speed de-
tector to detect the motor speed and current detector to detect the motor current and consider the
backup system such as checking up as below according to the level of importance of the system.
●
Start signal and actual operation check
Check the motor running and motor current while the start signal is input to the inverter by
comparing the start signal to the inverter and detected speed of the speed detector or detected
current of the current detector. Note that the motor current runs as the motor is running for the
period until the motor stops since the inverter starts decelerating even if the start signal turns off.
For the logic check, configure a sequence considering the inverter deceleration time. In addition,
it is recommended to check the three-phase current when using the current detector.
●
Command speed and actual operation check
Check if there is no gap between the actual speed and commanded speed by comparing the
inverter speed command and detected speed of the speed detector.
Output Signal
190 to 192 Setting
Positive Logic Negative Logic
ALM 99 199
RY 11 111
RUN 0 100
Y12 12 112
Tab. 4-2: Setting in positive and negative logic
NOTE
Changing the terminal assignment using Pr. 190 to Pr. 192 "Output terminal function selection"
may affect the other functions. Make setting after confirming the function of each terminal.
I001879E
Fig. 4-4: Backup method outside the inverter
System failure
Inverter
Controller
Sensor
(speed,
temperature,
air volume, etc.)
To the alarm detection sensor