Fuji Electric FRENIC-Ace series - Page 268

5.3 Description of Function Codes
5-98
■ Discharging capability (F50)
The discharging capability refers to kWs allowance for a single braking cycle. It can be calculated from breaking
F50 data Function
1 to 9000 1 to 9000 (kWs)
OFF Disable the electronic thermal overload protection
Discharging capability (kWs) =
2
Braking time (s) × Motor rated capacity (kW)
(1)
Discharging capability (kWs) = Braking time (s) x Motor rated capacity (kW) (2)
■ Allowable average loss (F51)
Allowance average loss is the resistor capacitor that enables continuous operation of motor. It can be calculated
from ED (%) and motor capacity (kW).
F51 data Function
0.001 to 99.99 0.001 to 99.99 (kW)
Allowable average loss (kWs) =
2
× Motor rated capacity (kW)
100
%ED(%)
(3)
Allowable average loss (kWs) =
× Motor rated capacity (kW)
100
%ED(%)
(4)
■ Braking resistance value (F52)
F52 specifies the resistance of the braking resistor.
F52 data Function
0.00
Braking resistor protection method by FRENIC-Multi series method (Resistance
not required)
0.01 to 999 0.01 to 999 (Ω)