Fuji Electric FRENIC-HVAC User Manual page 23

● Password function
Function codes can be read/write, displayed or hidden by setting the two passwords. This
prevents erroneous operation or overwriting of function codes. In addition, if a wrong password
was input exceeding the specified number of times, the inverter is restricted from operating as
the user is regarded as improper.
● Filter clogging prevention function
This function detects clogging of the fan filter with dust or other materials using the output
current and pressure sensor value. When clogging is detected, the fan is rotated in reverse
to eject dust, and then resumes rotation in forward to blow air. In addition, the function notifies
you of maintenance necessity with the alarm signal.
 Equipped with function that contributes to energy conservation.
 Automatic energy-saving operation
Considering that fact that "control that minimizes motor loss" has evolved and the loss of the
inverter itself, the device has been "equipped with a new type of control to minimize loss of the
motor plus the inverter" to further conserve electric power for fan and pump applications.
Example of features when using damper
or valve
Energy
conservation
effect
Inverter control (V/f control)
Air flow or flow rate (%)
*Effect differs according to motor characteristics
Example of energy saving effect characteristics
1-7
Inverter control
(For automatic energy
control)
1.1 Features