Precautions | Hitachi J300U Series specs

3.Fuzzy most suitable acceleration and deceleration

[Outline of the function]

The fuzzy most suitable acceleration and deceleration function realizes acceleration and decelera- tion characteristics using the inverter capability at its maximum under fuzzy control to eliminate troublesome setting of the acceleration and deceleration time.

The acceleration time is a time for acceleration at the current specified by the overload restriction constant.

The deceleration time is a time for decelerating so that the current does not exceed 150% of the specified one or the DC voltage in the inverter circuit does not exceed 385V. (770 V for the 400V class.)

The function sets the acceleration and deceleration time automatically in response to a change in the load or inertia in real time.

[Precautions]

1.This function is not suitable for a machine which requires a constant acceleration and decel- eration time. The acceleration and deceleration time varies with the magnitude of the load or inertia.

2.When the inertia of the machine is more than about 20 times of that of the motor shaft, a trip may occur.

3.The acceleration and deceleration time of the same motor always varies with a change of the current.

4.The fuzzy most suitable acceleration and deceleration setting function is valid only under the V/F control. In the high start torque running mode (under the sensorless vector control), the normal running is performed.

5.If the jogging running is executed when the fuzzy most suitable acceleration and decelera- tion setting function is selected, the jogging operation cannot be performed due to the fuzzy control.

6.When the load is more than the rated one, the deceleration time may be increased.

7.When acceleration and deceleration (the cycle is 2 [s] or less) are repeated frequently, a trip may occur.

8.If an external braking unit is used, the motor cannot stop within the deceleration time set with a braking resistor. In such a case, do not use the fuzzy acceleration/deceleration func- tion.

A-11

Image 123

Hitachi J300U Series instruction manual Precautions

Contents

J300 Series Definitions and Symbols Safety Precautions Page Iii Pollution degree Aug Revision History Table Table of Contents Installation Safety Precautions Inputoutput Input phase failure protection Noise filter Fuse Good example Power supplyBad example Control and operation Maintenance, inspection and part replacement Appendix Megohm-meter Earth leakage breaker MgoTurn on and OFF Good example Earth LeakageSurge absorber breaker Power Supply Leading power factor capacitorMotor General Caution To be grounded or shielded wire Inspection Upon Unpacking Contents of Specifications Label Names of Parts Appearance and Names of Parts Installation Be sure to check the ambient temperature Vent hole Cm or more Precaution for installation and wiring Wiring Power supply ELB Wiring the Power Supply and MotorL3 RB + T1 T2 T3 PE Dynamic Braking Resistor Braking Units Inverter At the site Improper grounding Proper grounding Inverter Wiring of Control Circuit Terminals FM CM1 PLC P24 CM2 AL2 AL1 AL0CM2 AL2 AL1 AL0 Page Connection to the Programmable Controller 200V class Wiring Equipment, Options EMI filter, etcStandard equipment Power supply Magnetic Inverter RB P Terminal Run signal 27 VDC Intelligent output signal Free run input signalCurrent frequency command Common for frequency command Output PLC Control Circuit Terminals Cosø=0.4 10 mA 30 VDC Resistor load Abnormal, Power offAL0-AL1 open Contact rating 250 VAC Resistor load Terminal Connection Diagram Before Starting Operation OperationPage Operating with digital operator Running from external commandFor sink type wiring Test Run Key to Key and then press PressKey to set Press Key to Key to set Press Contact b Contact a Contact specification Resetting Any one of A, B and C is possible Func Function key Up key, Down key Power Lamp Monitor LED displaySTOP/RESET key Operation of the Digital Operator Key Description Key is pressed, the extension function mode can be selected Explanation of Screen Display Monitor mode Transition of Each CodeOutput frequency Digital Operator Initialization List Screen display Explanation of Modes Monitor mode contents Is displayed 10.00 to 100.00 toTrip current Trip cause Function mode SettingFrequency Direction Running Tion time 1 Manual torque boost Accelera- tion time 1 Decelera Run Extension function Motor receiving voltage setting How to Delete Trip History Data , Extension function mode contents Initial value Constant between 99.9 is set in units Start frequency adjustmentExtension Function Code Speed control response constant Frequency upper, lower limiter Multispeed setting Extension Function Code Contents and displayCarrier frequency setting Frequency command sampling frequency setting 100 150 Setting method 20% 120%Motor poles setting for motor speed monitor Initial value Func Same as A26 Setting endInitial value Setting method 400 External frequency External Operation will be stoppedInverter requiring an external resistor T1 + t2 + t3 100 Model 055, 075LF Terminal connection example Output full-scale valueCurrent monitor Torque monitor 200% of the rated torque Only optionally set frequency Frequency arrival signal output methodAt the time of constant Speed arrival Swfw Swjg Base frequency setting Maximum frequencyFrequency at the start of running PID This function is valid when 0 is set for Setting method Auto tuning settingMotor data selection Ro-T- option selection Unusable Input Terminal Setting Extension Function Code Function name Frequency arrival signalSignal during running Setting method is the same Overtorque signal Note As that of the input terminals Input Protection Functions Other display Error Messages and Diagnosis Troubleshooting BRD%ED Ground fault on Symptom Display onCheck Countermeasure Appropriate value Trouble shooting HRW-OJ Page Insulation resistance tests, withstand voltage tests Maintenance and InspectionMaintenance and Inspection Precautions Inspection Items 10-2 Applied voltage Good example Time Megohm-meterBad example Time Location Daily Periodic 10-3Daily Inspection and Periodic Inspection 1/3 Instruments Daily Inspection and Periodic Inspection 2/3 10-4 Replacement Daily Inspection and Periodic Inspection 3/3No blown out LEDs Parts to be measured Measurement Method for I/O Voltage, Current, and Power Measurement method for output voltage 10-7 Standard Specifications Common Standarsd Specifications11-1 Description Input voltage Class Model Name Type 11-2 11-3 Individual Specification USA version J300 Functions When Using the Optional Remote Operator Connecting the remote operator12-1 Switch Model J300 series 12-2Same as VWA, J100 12-3 Monitor mode Term Lllllllll 12-4 12-5 Function mode 12-6 12-7 12-8 12-9 12-10 12-11 12-12 12-13 12-14 12-15 For error contents, see Other displays12-16 Fmax Fch Forced rewriting Description AlarmValue. Note that when Automatically rewritten 12-17 Dimensions Remote operator, copy unit12-18 12-19 Copy Unit Function 12-20 Data to be copied by the copy unit Precautions for copying 13-1 ServicePage Precautions Autotuning start Setting method Select 2 Motor in the third hierarchy New remote operatorSelect 3 Function in the first hierarchy Select 1 Control in the second hierarchy Tuning END Tuning NGDisplay in the failure state Select Sensorless vector control by Control method Running method by autotuning data 0VC to 4SLV in the fourth hierarchy Change the content of 6 Mode fromWhen the data is changed, press Key Select 1 V/f in the third hierarchy Carrier 50% Range where the energy conservation is effective Energy conservation running Outline of the functionLarge load Initial display SPD Precautions Principle Setting process Digital operator Select Running mode selec Tion STR Mode 2GOD IPS Trip OFF IPS Powr Alarm Time chart for retry mode Digitaloperator Commercial power source switchingSet TRM terminal mode Function mode F-34 Elbc Appendix 3 Capacitor Life Curve Ambient Temperature Hours Operation/day Capacitor life year Deceleration Appendix 4 Acceleration/Deceleration Curve ConstantsCurve RU curve Acceleration AUX When V/f control is selected Function modeWhen sensor-less vector control is selected Function mode Operation conditions Load varies Operation conditions Phenomena Improvements Display, etcQuickly varying load Motor revolution varies when AUX K 022.00 kW 005.50 kW Select the most approximate value Select the motor capacity which is the most approxiMate to the total capacity of the motors used For example, 7.5 kW, 5.5 kW, and 3.7 kW Function name Second function setting Appendix 6 Supplementaly Explanation of the Function Mode Monitor mode HOP, HRW DOP, DRWHRW DRW SET Selectrem 4RESETInitreseton 1F-SET 3LINE Acclinel Controlvc1AUTO 0NOR 2DATA 0NOR 2FRS 1ZST Runfrs ZST 3LINE Decline L4GAIN Decgain 2TIME 2LIMH 1LEVEL2CONST1.0 1LIML IN-TM4FRS IN-TM1RSIN-TM2AT IN-TM3JG 1RYA 3RUN 1BAUD2NUMBER1 0EVN Wiring Sketch Appendix 8 PID FunctionPID Gain Data Setting Method