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Safety Instructions
Precautions Concerning Electromagnetic Compatibility (EMC)
The SJ700 series inverter conforms to the requirements of Electromagnetic Compatibility (EMC) Directive
(2004/108/EC). However, when using the inverter in Europe, you must comply with the following
specifications and requirements to meet the EMC Directive and other standards in Europe:
WARNING: This equipment must be installed, adjusted, and maintained by qualified engineers who
have expert knowledge of electric work, inverter operation, and the hazardous circumstances that can
occur. Otherwise, personal injury may result.
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1. Power supply requirements
a. Voltage fluctuation must be -15% to +10% or less.
b. Voltage imbalance must be ±3% or less.
c. Frequency variation must be ±4% or less.
d. Total harmonic distortion (THD) of voltage must be ±10% or less.
2. Installation requirement
a. A special filter intended for the SJ700 series inverter must be installed.
3. Wiring requirements
a. A shielded wire (screened cable) must be used for motor wiring, and the length of the cable must be
according to the following table (Table 1).
b. The carrier frequency must be set according to the following table to meet an EMC requirement
(Table 1).
c. The main circuit wiring must be separated from the control circuit wiring.
4. Environmental requirements (to be met when a filter is used)
a. Ambient temperature must be within the range -10°C to +40°C.
b. Relative humidity must be within the range 20% to 90% (non-condensing).
c. Vibrations must be 5.9 m/s
2
(0.6 G) (10 to 55 Hz) or less. (5.5-22kW)
2.94 m/s
2
(0.3 G) (10 to 55Hz) or less. (30 to 55kW)
d. The inverter must be installed indoors (not exposed to corrosive gases and dust) at an altitude of
1,000 m or less.
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