Mitsubishi Electric 800 Series Instruction Manual page 112

*9 · Connect the DC power supply to the inverter terminals P/+ and N/-. Connect the positive terminal of the power supply to terminal P/+ and the
negative terminal to terminal N/-.
· When the energy is regenerated from the motor, the voltage between terminals P/+ and N/- may temporarily rise to 415 V or more. Use a DC
power supply resistant to the regenerative voltage/energy. When a power supply that cannot resist the regenerative voltage/energy is used,
connect a reverse current prevention diode in series.
· Powering ON produces up to four times as large current as the inverter rated current. Prepare a DC power supply resistant to the inrush current
at power ON, although an inrush current limit circuit is provided in the FR-E800 series inverter.
· The power capacity depends on the output impedance of the power supply. Select a power capacity around the AC power supply capacity.
 Three-phase 400 V power supply
Model FR-E840-[]
Applicable motor LD
*1
capacity (kW)
ND (initial setting)
Rated LD
capacity
ND (initial setting)
*2
(kVA)
LD
Rated current
*7
(A)
ND (initial setting)
Overload LD
current
*3
rating ND (initial setting)
*4
Voltage
Brake transistor
Regenerative
Maximum brake torque (ND
braking
*5
reference)
Rated input AC (DC) voltage/frequency
Permissible AC (DC) voltage fluctuation
Permissible frequency fluctuation
Without DC reactor
LD
With DC reactor
Rated input
*8
current (A) Without DC reactor
ND
With DC reactor
Without DC reactor
LD
Power supply
With DC reactor
capacity
Without DC reactor
*6
(kVA)
ND
With DC reactor
Protective structure (IEC 60529)
Cooling system
Approx. mass (kg)
*1 The applicable motor capacity indicated is the maximum capacity applicable for use of the Mitsubishi Electric 4-pole standard efficiency motor.
*2 The rated output capacity is the value with respect to 440 V output voltage.
*3 The percentage of the overload current rating is the ratio of the overload current to the inverter's rated output current. For repeated duty, allow
time for the inverter and motor to return to or below the temperatures under 100% load.
*4 The maximum output voltage does not exceed the power supply voltage. The maximum output voltage can be changed within the setting range.
The maximum point of the voltage waveform at the output side of the inverter is approximately the power supply voltage multiplied by
*5 The amount of braking torque is the average short-term torque (which varies depending on motor loss) that is generated when a motor
decelerates in the shortest time by itself from 60 Hz. It is not continuous regenerative torque. The average deceleration torque becomes lower
when a motor decelerates from a frequency higher than the base frequency. The inverter is not equipped with a built-in brake resistor. Use an
option brake resistor for an operation with large regenerative power. The brake unit (FR-BU2) can be also used.
*6 The power supply capacity varies with the value of the input power impedance (including those of the input reactor and cables).
*7 The value in parentheses is the rated output current when the low acoustic noise operation is performed with the surrounding air temperature
exceeding 40°C while 2 kHz or higher value is selected in Pr.72 PWM frequency selection.
*8 The rated input current is the value at a rated output voltage. The input power impedances (including those of the input reactor and cables) affect
the value.
*9 · Connect the DC power supply to the inverter terminals P/+ and N/-. Connect the positive terminal of the power supply to terminal P/+ and the
negative terminal to terminal N/-.
· When the energy is regenerated from the motor, the voltage between terminals P/+ and N/- may temporarily rise to 830 V or more. Use a DC
power supply resistant to the regenerative voltage/energy. When a power supply that cannot resist the regenerative voltage/energy is used,
connect a reverse current prevention diode in series.
· Powering ON produces up to four times as large current as the inverter rated current. Prepare a DC power supply resistant to the inrush current
at power ON, although an inrush current limit circuit is provided in the FR-E800 series inverter.
· The power capacity depends on the output impedance of the power supply. Select a power capacity around the AC power supply capacity.
0016 0026 0040 0060
0.4K 0.75K 1.5K 2.2K
0.75 1.5 2.2 3.0 5.5
0.4 0.75 1.5 2.2 3.7
1.6 2.7 4.2 5.3 8.5
1.2 2.0 3.0 4.6 7.2
2.1 3.5 5.5 6.9 11.1
(1.8) (3.0) (4.7) (5.9) (9.4)
1.6 2.6 4.0 6.0 9.5
(1.4) (2.2) (3.8) (5.4) (8.7)
120% 60 s, 150% 3 s (inverse-time characteristics) at
surrounding air temperature of 50°C
150% 60 s, 200% 3 s (inverse-time characteristics) at
surrounding air temperature of 50°C
Three-phase 380 to 480 V
Built-in
100% 50% 20%
Three-phase 380 to 480 V, 50/60 Hz (537 to 679 VDC
323 to 528 V, 50/60 Hz (457 to 740 VDC
±5%
3.3 6.0 8.9 11.0 16.0
2.1 3.5 5.5 6.9 11.0
2.7 4.4 6.7 9.5 14.0
1.6 2.6 4.0 6.0 9.5
2.5 4.5 6.8 8.2 12.0
1.6 2.7 4.2 5.3 8.5
2.1 3.4 5.1 7.2 11.0
1.2 2.0 3.0 4.6 7.2
Open type (IP20)
Natural Forced air
1.2 1.2 1.4 1.8 1.8
0095 0120 0170
3.7K 5.5K 7.5K
7.5 11.0
5.5 7.5
13.3 17.5
9.1 13.0
17.5 23.0
(14.9) (19.6)
12.0 17.0
*9
)
*9
)
25.0 32.0
18.0 23.0
18.0 25.0
12.0 17.0
19.0 25.0
13.0 18.0
14.0 19.0
9.1 13.0
2.4 2.4
1
2
3
4
5
6
7
8
9
10
√
2 .
111
4. Specifications
4.1 Inverter rating