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Thank you for purchase of “HITACHI INVERTER”. This manual explains about handling of “SJ-DG (digital
input option)”.
This instruction manual explains about treatment and maintenance of “SJ-DG”. Before using the product,
carefully read this manual with the instruction manual of inverter, and keeps it handy for quick reference of
operator and maintenance inspector. Before installing, operating, maintenance and inspection read this manual
carefully and follow the instructions exactly.
Always keep various kinds of specification mentioned in this manual and use exactly. And make sure to
prevent trouble by correct inspection and maintenance. Make sure to reach this manual to the end user.
About treatment of this manual
Please consent that mentioned items of this manual may be change without permission.
Keep this manual carefully not to lose because it cannot be reissued.
All right reserved.
Contents in this manual is written to make assurance doubly sure but, but please contact if you have some
doubts about spelling mistakes, omitted word etc.
Please agree that there is no responsibility for effects resulted, in spite of contents above mentioned.
Revision History Table
No.
Revision contents The date of issue Manual No
1. Initial release 1999/12 NB617X
Except this table, revised only spelling mistakes omitted words, and error writings without notice.