Precautions For Emc (Electromagnetic Compatibility) - Hitachi L100 Series User Manual

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Precautions for EMC (Electromagnetic Compatibility)

You are required to satisfy the EMC directive (89/336/EEC) when using an L100

inverter in a European country. To satisfy the EMC directive and to comply with

standard, follow the checklist below.

WARNING: This equipment should be installed, adjusted, and serviced by qualified

personal familiar with construction and operation of the equipment and the hazards

involved. Failure to observe this precaution could result in bodily injury.

1. The power supply to L100 inverter must meet these specifications:

a. Voltage fluctuation+/- 10% or less

b. Voltage imbalance +/- 3% or less

c. Frequency variation +/- 4% or less

d. Voltage distortion THD = 10% or less

2. Installation measure:

a. Use a filter designed for L100 inverter

3. Wiring:

a. Shielded wire (screened cable) is required for motor wiring, and the length must

be less than 50 meters.

b. The carrier frequency setting must be less than 5 kHz to satisfy EMC require-

ments.

c. Separate the main circuit from the signal/process circuit wiring.

4. Environmental conditions - when using a filter, follow these guidelines:

a. Ambient temperature: -10 to 40 °C

b. Humidity: 20 to 90% RH (non-condensing)

c. Vibration: 5.9 m/sec

d. Location: 1000 meters or less altitude, indoors (no corrosive gas or dust)

(0.6 G) 10 ~ 55Hz

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