SJ700-2 Instruction Manual NT204DX - Hitachi America, Ltd.

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Chapter 4 Explanation of Functions 4.2.93 Online auto-tuning function The online auto-tuning function allows you to compensate the motor constants for alterations caused by the rise of motor temperature and other factors to ensure stable motor operation. The online auto-tuning function applies only to the 1st motor and 2nd motor controls. Do not apply this function to the 3rd motor control. Item Function code Data Description 00 Hitachi general-purpose motor data Motor constant selection H002/H202 01 Automatically tuned data 02 Automatically tuned data (online auto-tuning enabled) When using this function, follow the instructions below. 1) Be sure to perform the offline auto-tuning before the online auto-tuning. 2) Since the data for online tuning is calculated by the offline auto-tuning, perform the offline tuning at least once, even when the inverter is used to drive a Hitachi general-purpose motor. 3) The online auto-tuning operates for a maximum of 5 seconds after the motor has stopped. (DC excitation is executed once to tune constants R1 and R2. The result of tuning is not reflected in the data displayed on the monitor.) If an operation command is input during the auto-tuning operation, the online auto-tuning ends midway because the operation command has priority over the online auto-tuning. (In such cases, the result of tuning is not reflected in the inverter settings.) 4) When the DC braking at stopping has been specified, the online tuning is performed after the DC braking operation ends. 5) When FOC, SON terminals are assigned, online auto-tuning is not executed. Operating procedure 1) Specify "02" (enabling the online auto-tuning) for the motor constant selection "H002". (Specify "00" [disabling the auto-tuning] for the Auto-tuning Setting "H001".) 2) Input an operation command. (The inverter will automatically perform the online auto-tuning after the motor stops.) 4.2.94 Secondary resistance compensation (temperature compensation) function The secondary resistance compensation function allows you to compensate for the secondary resistance to control the motor speed fluctuations due to the changes in the motor temperature. This function can operate when the control mode is the sensorless vector control, 0Hz-range sensorless vector control, or vector control with sensor. (Use the thermistor model PB-41E made by Shibaura Electronics Corporation.) Related code P025: Temperature compensation thermistor enable b098: Thermistor for thermal protection control When using this function, specify "02" (NTC) for the thermistor for thermal protection control (b098). (With a thermistor other than the PB-41E or another setting of the thermistor for thermal protection control, the motor temperature cannot be detected correctly.) Item Function code Data Description Temperature compensation 00 Disabling the secondary resistance compensation P025 thermistor enable 01 Enabling the secondary resistance compensation 4 - 88
Chapter 4 Explanation of Functions 4.2.95 Motor constants selection Adjust the motor constant settings to the motor to be driven by the inverter. When using a single inverter to drive multiple motors in the control mode based on VC, VP, or free V/f characteristic, calculate the total capacity of the motors, and specify a value close to the total capacity for the motor capacity selection (H003/H203). When the automatic torque boost function is used, the motor constant settings that do not match the motor may result in a reduced motor or unstable motor operation. You can select the motor constants that are used when the control mode is the sensorless vector control, 0Hz-range sensorless vector control, or vector control with sensor from the following three types: (1) Motor constants of Hitachi general-purpose motor (2) Motor constants tuned by offline auto-tuning (3) Arbitrarily set motor constants The motor constants set for the 1st motor control apply to the 3rd motor control. Item Function code Data or range of data Description 00 Constant torque characteristic (VC) V/F characteristic curve selection Motor data selection Motor capacity A044/A244/ A344 H002/H202 H003/H203 01 Reduced-torque characteristic (1.7th power of VP) 02 (*1) Free V/f characteristic 03 (*1) Sensorless vector control (SLV) 04 (*1) 0 Hz-range sensorless vector control 05 (*1) Vector control with sensor (V2) 00 Hitachi general-purpose motor constants 01 Motor constants tuned by auto-tuning 02 Motor constants tuned by online auto-tuning 0.2 to 75.0 (kW) Note)applied for 75 to 150kW Motor poles setting H004/H204 2, 4, 6, 8, or 10 (poles) Motor constant R1 H020/H220 0.000 to 65.53 (Ω) (*2) Motor constant R2 H021/H221 0.000 to 65.53 (kgm 2 ) (*2) Motor constant L H022/H222 0.00 to 655.3 (mH) Motor constant Io H023/H223 0.00 to 655.3 (A) (*2) Motor constant J H024/H224 0.001 to 9999. (kgm 2 ) (*3) Auto constant R1 H030/H230 0.000 to 65.53 (Ω) Auto constant R2 H031/H231 0.000 to 65.53 (Ω) Auto constant L H032/H232 0.00 to 655.3 (mH) Auto constant Io H033/H233 0.00 to 655.3 (A) Auto constant J H034/H234 0.001 to 9999. (kgm 2 ) *1 Any of "00" to "05" can be selected for the 1st motor (A044). Only "00" to "04" can be selected for the 2nd motor (A244). Only "00" or "01" can be selected for the 3rd motor (A344). *2 If you copy the data from a J300 series inverter to your SJ700 series inverter, set constants R1, R2, and Io as follows: R1 SJ700 = R1 J300 /1.125 R2 SJ700 = R2 J300 /1.2 Io = V/{272 x (2 x M J300 + L J300 ) x 10 -3 } V: Voltage class (200 or 400 V) *3 Convert the moment of inertia (J) into the motor shaft data. When the value of J is large, the motor response is fast, and the motor torque increases quickly. When the value of J is small, the motor response is slow, and the motor torque increases slowly. To control the response, set the value of J, and then adjust the speed response (H005/H205). *4 In the modes of sensorless vector control, 0Hz-range sensorless vector control and vector control with sensor, inverter may output reverse to given operation command in the low speed range as a nature of those control. In case there is a specific inconvenience for example reverse rotation damage the machine, enable the reverse run protection (b046). (see 4.2.101: Reverse run protection function) Arbitrary setting of motor constants For the arbitrary setting of the motor constants, the function codes requiring settings vary depending on the settings of the 1st/2nd control function and the motor constant selection. - When the 1st/2nd control function is enabled and "00" is specified for the motor constant selection → Directly input the desired values for "H020" to "H024". - When the 1st/2nd control function is enabled and "01" or "02" is specified for the motor constant selection → Directly input the desired values for "H030" to "H034". When the offline auto-tuning has not been performed, the constants (Hitachi general-purpose motor constants) of the motors in the same capacity class as the inverter have been set for "H030/H230" to "H034/H234". 4 - 89
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HITACHI INVERTER SJ700-2 SERIES INS
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Safety Instructions Safety Instruct
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Safety Instructions 3. Operation !
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Safety Instructions Precautions Con
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Safety Instructions 10. Distributio
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Contents Chapter 1 Overview 1.1 Ins
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Contents 4.2.30 Overload restrictio
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Contents 4.3.15 Speed/position swit
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Chapter 1 Overview This chapter des
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Chapter 1 Overview 1.2 Method of In
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Chapter 2 Installation and Wiring T
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Chapter 3 Operation You can operate
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Chapter 3 Operation 3.2.2 Code disp
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Chapter 3 Operation Key operation a
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Chapter 3 Operation (3) Code/data d
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Chapter 3 Operation 3.3 How To Make
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Chapter 4 Explanation of Functions
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Chapter 5 Error Codes 5.1 Error Cod
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Chapter 5 Error Codes Name Gate arr
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Chapter 5 Error Codes 5.1.2 Option
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Chapter 5 Error Codes 3) Error indi
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Chapter 5 Error Codes 5.1.3 Trip co
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Chapter 6 Maintenance and Inspectio
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Chapter 7 Specifications 7.1 Specif
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Chapter 7 Specifications (3) Common
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Chapter 7 Specifications SJ700-150
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Chapter 7 Specifications SJ700-750
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Chapter 8 List of Data Settings 8.1
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Chapter 8 List of Data Settings 8.4
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Chapter 8 List of Data Settings AVR
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Chapter 8 List of Data Settings Oth
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Appendix Upgrading from the SJ300 S
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Index A B C a/b....................
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Index O P O........................
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SJ700-2 Instruction Manual NT204DX - Hitachi America, Ltd.

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