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.
