9-5
Protec-
Motor protection Protection by electronic thermal
tive func-
tions
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-
Location Indoors (with no corrosive gas, oil spray, or metallic dust)
ment
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 MΩ min. (Do not carry out any insulation resistance or
withstand voltage tests)
Vibration resistance 9.8 m/s
2
max. between 10 to 20 Hz
2.0 m/s
2
max. between 20 and 50 Hz
Degree of protection Panel-mounting models: Conforms to IP20
Note 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.
Note 2. The heat radiation is the electric power consumed in the Inverter at the Inverter’s rated output.
Specifications Chapter 9
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