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Inverter Specifications Chapter 9-1
1. The power supply capacity is the capacity for the Inverter’s rated output. It
will vary depending on the impedance at the input power supply. (This is
due to fluctuations in the power factor. The power factor can be improved
by inserting an AC reactor.) There will also be variations in the ratio
between the rated current of the motor that is used and the rated output
current of the Inverter.
2. The heat radiation is the electric power consumed in the Inverter at the
Inverter’s rated output.
Max. applicable motor capacity (kW) 0.2 0.4 0.75 1.5 2.2 3.7
Output
specifi-
cations
Rated output capacity (kVA) 0.9 1.4 2.6 3.7 4.2 6.6
Rated output current (A) 1.2 1.8 3.4 4.8 5.5 8.6
Rated output voltage (V) 3-phase 380 to 460 V AC (according to the input voltage)
Max. output frequency 400 Hz parameter setting
Control
charac-
teristics
Harmonic-current
countermeasures
DC reactor (option) connection possible
Control method Sine wave PWM (V/f control)
Carrier frequency 2.5 to 10.0 kHz (in vector control)
Frequency control range 0.1 to 400 Hz
Frequency precision
(temperature characteristics)
Digital commands: ±0.01% (–10°C to 50°C)
Analog commands: ±0.5% (25°C ±10°C)
Frequency setting resolution Digital commands: 0.1 Hz (less than 100 Hz) and 1 Hz (100 Hz or over)
Analog commands: 0.06 Hz/60 Hz (equivalent to 1/1000)
Output frequency resolution 0.01 Hz
Overload capacity 150% of rated output current for 1 min
External frequency set signal Selectable with FREQ adjuster: 0 to 10 V DC (20 kW),
4 to 20 mA (250 W), and 0 to 20 mA (250 W)
Acceleration/deceleration time 0.0 to 999 s (Independent acceleration and deceleration time settings:
2 types)
Braking torque Approx. 20% (Braking Resistor and Braking Unit cannot be connected.)
Voltage/frequency
characteristics
Set a user V/f pattern
Protective
functions
Motor protection Protection by electronic thermal
Instantaneous overcurrent
protection
Stops at approx. 250% of rated output current
Overload protection Stops in 1 min at approximately 150% of rated output current
Overvoltage protection Stops when main-circuit DC voltage is approximately 820 V
Undervoltage protection Stops when main-circuit DC voltage is approximately 400 V
Momentary power interruption
compensation (selection)
Stops for 15 ms or more. By setting the Inverter to momentary power
interruption mode, operation can be continued if power is restored
within approximately 0.5 s.
Cooling fin overheating Detects at 110°C ±10°C
Grounding protection Protection at rated output current level
Charge indicator (RUN indicator) Lit when the main circuit DC voltage is approximately 50 V or less.
Environ-
ment
Location Indoors (with no corrosive gas, oil spray, or metallic dust)
Ambient temperature Operating: –10°C to 50°C
Ambient humidity Operating: 95% max. (with no condensation)
Ambient temperature –20°C to 60°C
Altitude 1,000 m max.
Insulation resistance 5 MWmin. (Do not carry out any insulation resistance or withstand
voltage tests)
Vibration resistance 9.8 m/s2max. between 10 to 20 Hz 2.0 m/s2max. between 20 and
50 Hz
Degree of protection Panel-mounting models: Conforms to IP20
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