Mitsubishi Electric FR-D720S SC EC, Instruction Manual

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Specifications Appendix
A - 2
A.1.2 3-phase, 400V class
The applied motor capacity indicated is the maximum capacity applicable for use of the
Mitsubishi 4-pole standard motor.
The rated output capacity indicated assumes that the output voltage is 440V.
When operating the inverter with surrounding air temperature of 40°C, the rated output
current is shown in ( ).
The % value of the overload current rating indicated is the ratio of the overload current to
the inverter’s rated output current (surrounding air temperature of 50°C max.). For repeated
duty, allow time for the inverter and motor to return to or below the temperatures under 100%
load.
The maximum output voltage does not exceed the power supply voltage. The maximum
output voltage can be changed within the setting range. However, the pulse voltage value
of the inverter output side voltage remains unchanged at about
that of the power supply.
The braking torque indicated is a short-duration average torque (which varies with motor
loss) when the motor alone is decelerated from 60Hz in the shortest time and is not a
continuous regenerative torque. When the motor is decelerated from the frequency higher
than the base frequency, the average deceleration torque will reduce. Since the inverter
does not contain a brake resistor, use the optional brake resistor when regenerative energy
is large. A brake unit (FR-BU2) may also be used.
The power supply capacity varies with the value of the power supply side inverter impedance
(including those of the input reactor and cables).
Model FR-D740- SC-EC 012 022 036 050 080 120 160
Rated motor capacity [kW]
0.4 0.75 1.5 2.2 3.7 5.5 7.5
Output
Output capacity [kVA]
0.9 1.7 2.7 3.8 6.1 9.1 12.2
Rated current [A]
1.2
(1.4)
2.2
(2.6)
3.6
(4.3)
5.0
(6.0)
8.0
(9.6)
12.0
(14.4)
16.0
(19.2)
Overload current rating
200% of rated motor capacity for 0.5 s; 150% for 60 s
Voltage
3-phase AC, 0V to power supply voltage
Regenerative braking torque
100% 50% 20%
Power supply
Power supply voltage 3-phase, 380–480V AC
Voltage range 325–528V AC at 50/60Hz
Power supply frequency 50/60 Hz ± 5%
Rated input capacity [kVA]
1.5 2.5 4.5 5.5 9.5 12 17
Protective structure IP20
Cooling system Self cooling Forced air cooling
Weight [kg] 1.3 1.3 1.4 1.5 1.5 3.3 3.3
Tab. A-2: Specifications
2