Chapter 1 - Warnings And Instructions - Hitachi WJ200 Installation Manual

Chapter 1 – Warnings and Instructions
WARNING The motor cable should be kept as short as possible in order to avoid
electromagnetic emission as well as capacitive currents. The rapid voltage
changes of the Hitachi WJ200 series cause capacitive currents through the
motor cable stray capacitances.
The cable length increases the capacitive current and electromagnetic
emission.
It is recommended that the motor cable length does not exceed 50m.
It is always recommended to install output AC-Reactors (motor
chokes) if the cable length exceeds 50 m.
WARNING The filters contain capacitors between the phases and the phases to ground
as well as suitable discharging resistors. But after switching off the line
voltage you should wait a minimum of 60 seconds before removing
protective covers or touching terminals etc. Ignore this and you may get an
electric shock!
WARNING The protective conductor connection between filter and drive must be
designed as a solid and permanent installation. Plug-in connections are not
permissible.
WARNING The use of ground fault monitoring devices is not recommended. Should
they be compulsory in certain applications for safety reasons, you should
choose monitoring devices which are suited for DC-, AC- and HF-ground
currents.
WARNING The thermal capacity of the line filter is guaranteed up to a maximum
motor cable length of 50 m.
WARNING The line filters have been developed for use in grounded systems. Use in
ungrounded systems is not recommended.
WARNING The Hitachi WJ200 series is not intended for sales to general public but a
professional equipment to be used in trades, professions and industries.
If installed according to the following directions, the frequency inverter comply with the
following standards:
Emmissions:
Immunity:
EN 61800-3 (EN 55011 group 1, Category C1/C2/C3[Class B/A])
EN 61800-3, industrial environments
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Chapter 1 – Warnings and instructions