Fuji Electric FRENIC-HVAC User Manual page 21

● Trip-less by regenerative avoidance control (effective for acceleration, deceleration
and fixed speed)
Because amount of energy to be regenerated to the inverter is limited and
acceleration/deceleration time is controlled, equipment can be operated without overvoltage
trip.
● Standardly equipped with Real time clock (RTC)
∙ Alarm information date/time display
∙ Timer operation function
∙ You can set up to 4 timers by units of 1 week.
∙ Holiday setting (20 days a year) is also possible.
∙ Daylight saving time auxiliary function
∙ Battery (optional) * Battery connection status displayed on the LCD monitor.
When operation is performed in the
same schedule through a week
● Continued operation of equipment by overload avoidance control
If the inverter becomes overloaded in the case where inverter internal temperature rises
radically from increased load or ambient temperature rises abnormally, operation is continued
by reducing the load by reducing motor speed.
Load status
Inverter temperature
Output frequency
<Example: Operation when decelerating>
Run
command
Rotation
speed
DC
intermedi
ate circuit
voltage
Current
Time
OH trip
1-5
When operation schedule varies
depending on the day of the week
Time
1.1 Features