Factory Automation

Inverters-FREQROL-F Series　-FREQROL-F700PJ- Optimum for Fan and Pump Applications

    Enhanced PID control

    • To save energy in low-speed operation : PID output shutoff (sleep) function
    • To shorten the start-up time of PID control : PID automatic switchover function
    • For air conditioning applications : Forward/reverse rotation switching by external signals
    • To use various types of detectors : PID set point and measured value outputs in voltage (0 to 5V / 0 to 10V) and current (4 to 20mA)

    Regeneration avoidance function

    • The operation frequency is automatically increased to prevent the regenerative overvoltage fault from occurring. This function is useful when a load is forcibly rotated by another fan in the duct.

    Automatic restart after instantaneous power failure function / flying start function

    After an instantaneous power failure, the operation is re-startable from the coasting motor speed.
    Even if the rotation direction has been forcibly reversed, the operation can be smoothly restarted in the original direction.