User manual HITACHI SJ300

[. . . ] Cover SJ300 Series Inverter Instruction Manual · Three-phase Input · Three-phase Input U. S. Version Models 200V Class 400V Class European Version Models Manual Number: NB613XJ September 2006 After reading this manual, keep it handy for future reference. Hitachi Industrial Equipment Systems Co. , Ltd. SJ300 Inverter i Safety Messages For the best results with the SJ300 Series inverter, carefully read this manual and all of the warning labels attached to the inverter before installing and operating it, and follow the instructions exactly. Keep this manual handy for quick reference. Definitions and Symbols A safety instruction (message) includes a hazard alert symbol and a signal word, WARNING or CAUTION. Each signal word has the following meaning: This symbol indicates HIGH VOLTAGE. [. . . ] The basic installation covered in Chapter 2 concluded with the powerup test and running the motor. Now, this chapter starts from that point and shows how to make the inverter part of a larger control or automation system. Operations and Monitoring Cautions for Operating Procedures Before continuing, please read the following Caution messages. CAUTION: The heat sink fins will have a high temperature. CAUTION: The operation of the inverter can be easily changed from low speed to high speed. Be sure check the capability and limitations of the motor and machine before operating the inverter. CAUTION: If you operate a motor at a frequency higher than the inverter standard default setting (50Hz/60Hz), be sure to check the motor and machine specifications with the respective manufacturer. Only operate the motor at elevated frequencies after getting their approval. Otherwise, there is the danger of equipment damage. SJ300 Inverter 4­3 Warnings for Operating Procedures Before continuing, please read the following Warning messages. WARNING: Be sure to turn ON the input power supply only after closing the front case. WARNING: While the inverter is energized, be sure not to touch the inverter terminals even when the motor is stopped. WARNING: If the Retry Mode is selected, the motor may suddenly restart after a trip stop. Be sure to stop the inverter before approaching the machine (be sure to design the machine so that safety for personnel is secure even if it restarts. ) Otherwise, it may cause injury to personnel. WARNING: If the power supply is cut OFF for a short period of time, the inverter may restart operation after the power supply recovers if the Run command is active. If a restart may pose danger to personnel, so be sure to use a lock-out circuit so that it will not restart after power recovery. WARNING: The Stop Key is effective only when the Stop function is enabled. WARNING: During a trip event, if the alarm reset is applied and the Run command is present, the inverter will automatically restart. Be sure to apply the alarm reset only after verifying the Run command is OFF. WARNING: Be sure not to touch the inside of the energized inverter or to put any conductive object into it. WARNING: If power is turned ON when the Run command is already active, the motor will automatically start and injury may result. Before turning ON the power, confirm that the RUN command is not present. WARNING: When the Stop key function is disabled, pressing the Stop key does not stop the inverter, nor will it reset a trip alarm. WARNING: Be sure to provide a separate, hard-wired emergency stop switch when the application warrants it. Operations and Monitoring 4­4 Optional Controlled Decel and Alarm at Power Loss Optional Controlled Decel and Alarm at Power Loss With the default SJ300 inverter configuration, a sudden power loss will cause the inverter to shut down immediately. And without power, the inverter's alarm output will not activate. This default performance may be fine for applications with loads such as fans and pumps. [. . . ] If the use of reactors, contactors, terminals, or safety switches in the motor output is necessary, the unshielded section should be kept as short as possible. · Some motors have a rubber gasket between terminal box and motor housing. Very often, the terminal boxes, and particularly the threads for the metal PG screw connections, are painted. Make sure there is always a good metallic connection between the shielding of the motor cable, the metal PG screw connection, the terminal box, and the motor housing. [. . . ]