User manual HITACHI SJ700-2

[. . . ] HITACHI INVERTER SJ700-2 SERIES INSTRUCTION MANUAL Read through this Instruction Manual, and keep it handy for future reference. NT204X Introduction Thank you for purchasing the Hitachi SJ700-2 Series Inverter. This Instruction Manual describes how to handle and maintain the Hitachi SJ700 Series Inverter. Read this Instruction Manual carefully before using the inverter, and then keep it handy for those who operate, maintain, and inspect the inverter. Before and during the installation, operation, inspection, and maintenance of the inverter, always refer to this Instruction Manual to obtain the necessary related knowledge, and ensure you understand and follow all safety information, precautions, and operating and handling instructions for the correct use of the inverter. [. . . ] If the primary resistance of the motor is less than the standard motor specification, try to increase the setting of "H006/H206/H306" step by step. Try to reduce the setting of "H006/H206/H306" if the inverter is driving a motor of which the capacity is higher than the inverter rating. You can also use the following methods to stabilize the motor operation: 1) Reducing the carrier frequency (b083) (See Section 4. 2. 11. ) 2) Reducing the V/f gain setting (A045) (See Section 4. 2. 17. ) Item Stabilization constant V/f gain setting Carrier frequency setting Function code H006/H206/ H306 A045 b083 Data 0. (%) 0. 5 to 15. 0 (kHz) Description Increase or reduce the setting to stabilize the motor. Reduce the setting to stabilize the motor. Reduce the setting to stabilize the motor. 4. 2. 88 Selection of operation at option board error You can select how the inverter operates when an error results from a built-in option board between two modes. In the other mode, the inverter ignores the error and continues the operation. When you use the feedback option board (SJ-FB) as option board 1, specify "01" for "P001". When you use the SJ-FB as option board 2, specify "01" for "P002". Item Operation mode on expansion card 1 and 2 errors Function code P001/P002 Data 00 01 Related code P001: Operation mode on expansion card 1 error P002: Operation mode on expansion card 2 error Description TRP: Alarm output RUN: Continuation of operation 4 - 79 Chapter 4 Explanation of Functions 4. 2. 89 Optimum accel/decel operation function Related code The optimum accel/decel operation function eliminates the need A044/A244/A344: V/F characteristic curve for acceleration time and deceleration time settings for the motor selection, 1st/2nd/3rd motors A085: Operation mode selection operation by the inverter. Conventional inverters required you to b021/b024: Overload restriction operation adjust the acceleration and deceleration time according to the mode (1) (2) b022/b025: Overload restriction setting (1) (2) status of the load. Based on fuzzy logic, this function automatically adjusts the acceleration and deceleration time to minimize the inverter performance. This function adjusts the acceleration time so that during acceleration, the inverter output current does not exceed the current level specified by the deceleration rate at overload restriction (when the overload restriction is enabled) or about 150% of the inverter's rated current (when the overload restriction is disabled). This function adjusts the deceleration time so that, during deceleration, the output current does not exceed about 150% of the inverter's rated current or the DC voltage in the inverter circuits does not exceed about 370 V (in the case of 200 V class models) or about 740 V (in the case of 400 V class models). Thus, this function automatically adjusts the acceleration and deceleration time appropriately on a real-time basis even when the motor load or the motor's moment of inertia changes. Item Operation mode selection Function code A085 Data 00 01 02 Description Normal operation Energy-saving operation Fuzzy operation Observe the following precautions and instructions when using this function: Note 1: This function is not suited for machines that require fixed acceleration and deceleration times. This function varies the acceleration and deceleration time according to the changes in the load and the moment of inertia. Note 2: If the inertial force produced in the machine becomes about 20 times as high as the motor shaft capacity, the inverter may trip. If this occurs, reduce the carrier frequency. Note 3: Even when the inverter is driving the same motor, the actual acceleration/deceleration time always changes according to current fluctuation. Note 4: The selection of the fuzzy acceleration/deceleration function is valid only when the control mode is a V/f characteristic control mode. When a sensorless vector control mode is selected, the selection of this function is ignored (normal operation is performed). Note 5: When the fuzzy acceleration/deceleration function is enabled, the jogging operation differs from the normal jogging operation because of fuzzy acceleration. Note 6: When the fuzzy acceleration/deceleration function is enabled, the deceleration time may be prolonged if the motor load exceeds the inverter's rated load. [. . . ] 4-56 UP/DWN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-55 User Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5 user parameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-77 user setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ]