Hitachi SJ700-2 specs

Chapter 6 Maintenance and Inspection

6.5 Method of Checking the Inverter and Converter Circuits

You can check the quality of the inverter and converter circuits by using a tester.

(Preparation)

1)Remove the external power supply cables from terminals R, T, and T, the motor cables from terminals U, V, and W, and the regenerative braking resistor cables from terminals P and RB.

2)Prepare a tester. (Use the 1Ω-measuring range.)

(Checking method)

Measure the current conduction at each of the inverter's main circuit terminals R, S, T, U, V, W, RB, P, and N while switching the tester polarity alternately.

Note 1: Before checking the circuits, measure the voltage across terminals P and N with the tester in DC voltage range mode to confirm that the smoothing capacitor has fully discharged electricity.

Note 2: When the measured terminal is nonconductive, the tester reads a nearly infinite resistance. The tester may not read the infinite resistance if the measured terminal flows a current momentarily under the influence of the smoothing capacitor.

When the measured terminal is conductive, the tester reading is several ohms to several tens of ohms. The measured values may vary slightly, depending on the types of circuit devices and tester. However, if the values measured at the terminals are almost the same, the inverter and converter circuits have adequate quality.

Note 3: Only inverter models with capacity of 22 kW or less have the BRD circuit.

Tester polarity

Measurement result

⊕ (red)

(black)

D1

R

PD

Nonconductive

PD

R

Conductive

BRD circuit

D2

S

PD

Nonconductive

PD

P

circuit

PD

S

Conductive

Converter circuit

RB

T

PD

Nonconductive

D3

Converter

PD

T

Conductive

R

D4

R

N

Conductive

D1

D2

D3

N

R

Nonconductive

D5

S

N

Conductive

N

S

Nonconductive

S

D6

T

N

Conductive

C+

N

T

Nonconductive

T

TR1

U

P

Nonconductive

TR7

P

U

Conductive

TR2

V

P

Nonconductive

P

V

Conductive

D4

D5

D6

circuit

W

P

Nonconductive

TR3

P

W

Conductive

Inverter

N

U

N

Conductive

TR4

N

U

Nonconductive

TR5

V

N

Conductive

N

V

Nonconductive

TR6

W

N

Conductive

N

W

Nonconductive

circuit

RB

P

Nonconductive

TR7

P

RB

Conductive

BRD

RB

N

Nonconductive

N

RV

Nonconductive

Inverter circuit

TR1 TR2 TR3

U

V

W

TR4 TR5 TR6

6 - 4

Image 238

Hitachi SJ700-2 instruction manual Method of Checking the Inverter and Converter Circuits

Contents

SJ700-2 Series Page Safety Instructions Installation Wiring ！ Warning Operation Maintenance, inspection, and parts replacement Precautions Concerning Electromagnetic Compatibility EMC Or 1/0 Model No Required torque N-m Wire range AWG13.7 40 a Model No Fuse/circuit breaker a Type Rating30 a 60 a Contents Contents Running time over and power-on time over signals RNT and ONT Contents Error Codes Xii Index Xiii Overview Page Inspection of the Purchased Product Specification labelInspecting the product Warranty Terms Method of Inquiry and Product WarrantyProduct warranty Method of inquiry Exterior Views and Names of Parts Installation and Wiring Page Installation and Wiring Precautions for installation Inverter Inverter capacity kW 18.5 Loss with 70% load W Ventilation fanInverter AcceptableUnacceptable Loss with 100% load W Joint Section to be cut off Backing plate Rubber bushing Wiring Phase power supply Hitachi Explanation of main circuit terminals Explanation of control circuit terminals AL0 SW1 OFF on Wiring of the main circuit Inverter Grounding bolt prepared by user Terminal layout Inverter model Terminal layout Charge lump Terminal layout Inverter model Charge lump 100 Applicable peripheral equipmentInverter Motor 380 to 480 V +10%, -15% 200 to 240 V +10%, -15%50/60 Hz ±5% 282 to 339 VDC 50/60 Hz ±5% FW 8 CM1 14 13 11 AL1 TH FW 8 CM1PL CM1 7 6 CM1 15 CM2 12 AL0 AL2 Sink logic When using the internal interface power supplyWhen using an external power supply Source logic BRD Operation Page Operating Methods ！ Warning Input device control Device switch Frequency-setting commandControl circuit terminal block Monitor Power lamp Digit LED display How To Operate the Digital Operator OPE-SNames and functions of components Code display system and key operations Operation Corresponding to the function code. Data display *1*2 Parameter type STR key after changing the data Pressing the STR key Display the monitor mode code. d001 is displayed How To Make a Test Run ELB Key to start the motor RUN lamp green LED goes on Press Key to decelerate or stop the motor CM1 PLC Explanation of Functions This chapter describes the functions of the inverterPage Output current monitoring Monitor ModeOutput frequency monitoring Rotation direction monitoring Intelligent output terminal status Intelligent input terminal statusScaled output frequency monitoring Actual-frequency monitoring Torque command monitoringPower monitoring Torque bias monitoring Heat sink temperature monitoring Cumulative power monitoringCumulative power-on time monitoring Motor temperature monitoring Program counter display easy sequence function Current position monitor in absolute position control modeLife-check monitoring Program number monitoring easy sequence function DC voltage monitoring Programming error monitoringTrip monitoring 1 to BRD load factor monitoring Keypad Run key routing Function ModeOutput frequency setting Rotational direction restriction No contact Frequency source settingRun command source setting Active state C011 to C018 NC contact Stop mode selection Stop key enable Acceleration/deceleration time setting Deceleration time tB Base frequency setting Maximum frequency setting External analog input setting O, OI, and O2 Frequency operation function +fO2 + fO2 Start/end frequency setting for external analog input Frequency addition function 16 V/f gain setting External analog input O/OI/O2 filter settingStart/end frequency settings for the O2-L terminal 17 V/F characteristic curve selection VPf To free-setting V/f frequency 7 Hz Free-setting V/f frequencyTo 400.Hz Free-setting V/f frequency To free-setting V/f frequency 6 Hz Torque boost setting B083 DC braking DB setting Example 2-a Example 2-b Edge mode A056Example 1-a Example 1-b Example 3-a Example 3-b Ii Example 5-a when the stop command is input Ii Example 6-a when the stop command is input Example 7-a Edge modeExample 7-b When the O-L or OI-L terminal is used Frequency upper limit settingWhen the O2-L terminal is used Setting of the length of time to stop Acceleration stop frequency settingSetting of 0 Hz disables the jump frequency function Frequency setting Acceleration PID function Operation targets include + O2 Input to the OI terminal OI-L + O2OI + O2 Operation targets are the inputs To the OI and O terminals 01 % FW on OFF FBV Onoff Two-stage acceleration/deceleration function 2CH Inverter Acceleration/deceleration curve selectionYou can set different patterns of motor acceleration Use functions A097 and A098 to select acceleration Energy-saver operation Energy saving mode tuning A086Accuracy Retry or trip after instantaneous power failure Power supply Inverter output Motor speed Example 7 b00402 Example 5 b00400Example 6 b00401 Example 8 b00400 Enable Enabling the protection Phase loss power input protectionFunction code Data Description Phase loss detection Disabling the protection Free setting of electronic thermal characteristic Constant-torque characteristicCharacteristic Electronic thermal protection Thermal warning signal Setting of the current at each breakpointSetting of the threshold level to output Disabling the electronic thermal protection Overload restriction/overload notice Overcurrent restraint Over voltage supression during deceleration Start frequency setting Reduced voltage start function Carrier frequency setting Class Function code Range of data Description Automatic carrier Automatic carrier frequency reduction00/01 Invalid, 01 valid Frequency reduction Cooling-fan operation setting Dynamic braking BRD function Intelligent input terminal setting Input terminal a/b NO/NC selection Make multispeed s 0 to 7 available for selection Bit operation modeBy setting multispeeds 1 to 7 A021 to A027 If two or more input terminals are turned on at the same Jogging JG command setting Jog stop mode 43 2nd/3rd motor control function SET and SET3 Software lock SFT function Forcible-operation from terminal F-TM function Free-run stop FRS function Commercial power source switching CS function Reset RS function Example 4 Restarting with active matching frequency Remote control function UP and DWN Unattended start protection USP function 53 3-wire interface operation function STA, STP, and F/R External trip EXT function Control gain switching function CAS 55 P/PI switching function PPI Intelligent pulse counter Pcnt and PCC Analog command holding function AHDSpeed error at rated torque a Synchronous rotation speed at base frequency Intelligent output terminal setting Example of operation as an alarm output terminal Intelligent output terminal a/b NO/NC selection Disabling the output of frequency C042/C045 043/C046 63 0 Hz speed detection signal ZS Over-torque signal OTQ Alarm code output function AC0 to AC3 Logical output signal operation function LOG1 to LOG6 Capacitor life warning signal WAC Communication line disconnection signal NDc Starting contact signal FR Cooling-fan speed drop signal WAFHeat sink overheat warning signal OHF Irdy Inverter ready signal Low-current indication LOC signalForward rotation signal FWR FWR Forward rotation signal RVR Reverse rotation signal Reverse rotation signal RVRMajor failure signal MJA MJA Major failure signal WCO/WCOI/WCO2 Input terminal response time Output signal delay/hold functionExternal thermistor function TH FM siginal selection FM terminalPulse output terminal Function code Range of data Description AM and AMI terminals Initialization setting Function code display restriction Explanation of Functions Last equivalent to the setting on SJ300 Stabilization constant setting Automatic user-parameter settingSelection of operation at option board error Page Brake control function Wait time longer than the delay after Signal has been output until the brake isBrake Wait Time for Mechanical delay after the release Release signal output until the release B054 B053 B052 Offline auto-tuning function When using this function, follow the instructions below Normal end Abnormal end Function code Data Description Temperature compensation Online auto-tuning functionAutomatically tuned data online auto-tuning enabled Disabling the secondary resistance compensation Io as follows Then adjust the speed response H005/H205Motor constants selection Voltage class 200 or 400 Sensorless vector control Current limiter for the low-speed range Sensorless vector, 0 Hz domain controlZero LV lmit Zero LV starting boost current Output torque Torque monitoring functionForcing function FOC Motor capacity selection Torque limitation function B041 B042 B044 B043 Enable Enabling counterrotation preventionReverse Run protection function Disabling counterrotation prevention Torque LAD stop function High-torque multi-motor operation Easy sequence function Personal computer Windows system 2 V2 control pulse setting Functions requiring the SJ-FB Torque-limited operation at Vector control with encoder feedbackOperation Torque limiter level Torque biasing function Torque control function Frequency command Hz = Pulse train position control modeControl block diagram 255 MD1 Forward/reverse operation command with pulse train SBP ＳＢＰ P019 = 00 FB Electronic gear functionP019 = 01 REF Master inverter Slave inverter Example of use Synchronous operationMain motor Sub-motor Setting of the actual pulse Motor gear ratio setting functionCount of encoder Home search function １０２４３０７２２０４８ Absolute position control mode Operation in absolute position control mode Operation Output frequency Speed setting POK signal Multistage position switching function CP1/CP2/CP3 Speed/position switching function SPD Forward direction at the low-speed Teaching function Position range specification functionForward/reverse drive stop function FOT/ROT Teaching selection P074 Servo-on function SON Fwrv Pulse train frequency input Block diagram for pulse train frequency inputSetting of the filter time constant for To +100. % Pulse train frequency limit Communication specifications Communication Functions Ascii mode Set this item when your inverter isCommunication mode Selection Modbus-RTU mode Explanation of Functions Communication in Ascii mode STX 0101000500 BCC CR 0230 3130 3130 30 30 35 30 3030 350D Data to be transmitted Explanation of Functions Response frame Frame format Data Bytes See Note DataInverter status a Inverter status B Inverter status C Status a Status B Status C Reserved Inverter status C Bytes Data monitored at trippingInverter status B Bytes Bytes Decimal Ascii code Output current Data parameter number Bytes See Note Station No. Command ParameterResponse frame Positive response Frame format Station No Station No. Command Station No. Command Parameter DataParameter data decimal Ascii Bytes See Note Code Data Bytes Enabling data storage Explanation of Functions Ii Negative response Response frame Frame format This result is used as BCC Transmission frame configuration Station No. CommandReference Ascii code conversion table Character data Ascii code Communication in Modbus-RTU mode Reads registers Function code Maximum number of dataReads the coil status Writes data to a coil CRC*1 An unsupported function is specified Slave address Function code Exception code CRC-16Code Description Specified address is not found Intelligent input terminal Coil number Terminal status Read the data received in the response as follows Updating data upper digit FFh Field name Sample settingCoil status Updating data lower digit Query Response Field name Sample setting Intelligent input terminal 01h An unsupported function is specified Slave address Function code Exception code CRC-16 codeException codes 02h Specified address is not found Recalculating the motor constants Data to be written DescriptionStoring the register data Coil No Setting LOG2 logical operation result ON, 0 OFF Ii List of registers frequency settings and trip monitoring Register Function name Monitoring and setting items Data Option 2 error 0 to Option 1 error 0 toList of inverter trip factors Iii List of registers monitoring Iv List of registers List of registers function modes Start frequency to Monitoring and setting items Data resolution 12B4h Failure time Monitoring and setting items Data resolution Register During inverter operation including 5 minutes after EXT external trip, 13 USP unattended start Thermal overload, 07 LAD frequency, 09 motor C042 high 1487h Output 11 off-delay time C131 1506h Over-speed error detection level P026 Setting To the allowable maximum frequency Code data Vi List of registers 2nd control settings 2506h Motor Viii List of registers 3rd control settings Ix List of registers 3rd control setting Error Codes Error Codes and Troubleshooting ···················· 5Page Error Codes and Troubleshooting Error Codes CPU GA.COM Adjust Option boards error codes Input mode specified by switch settings Baud rate Kbps DIP switch setting Setting of MAC ID DIP switches No to No= 29 hexadecimal = 41 decimal Error code is output when the relevant program runs Trip conditions monitoring 305 A004/A204/A304 A202/A220/A320 *2 006 Method of Checking the Inverter Precautions for MaintenanceGround Resistance Test with a Megger DC-Bus Capacitor Life CurvePage Daily inspection Precautions for Maintenance and InspectionCleaning Periodic inspection Daily and Periodic Inspections Ground terminals with a megger Ground Resistance Test with a Megger Withstand Voltage Test Method of Checking the Inverter and Converter Circuits DC-Bus Capacitor Life Curve Output of Life Warning Method to measure the output voltage PfIN＝Motor 2W 220ｋΩ Specifications Specifications External dimensionsPage Specifications of the 400 V class model SpecificationsSpecifications of the 200 V class model Common specifications of 200 V class and 400 V class models Standard Model name type 055 075 110 150 185 220 300 370 450 550 Name SJ700-055 to110LFF2/LFUF2 / HFF2/HFEF2/HFUF2 External dimensionsSJ700-150 to 220 LFF2/LFUF2 / HFF2/HFEF2/HFUF2 SJ700-300 LFF2/LFUF2 / HFF2/HFEF2/HFUF2 SJ700-550 LFF2/LFUF2 List of Data Settings Monitoring Mode Function Mode Extended Function ModePage Precautions for Data Setting Function Mode Extended Function Mode PID AVR B004 Failure/under-voltage trip alarm To stop Enable Power Free-setting V/f voltage To 800.0 Input Analog C107 AMI gain adjustment To 200. % Setting C163 Input terminal response time To 200. ¯2ms Control Control RPM Specification List of Data Settings Allowed or Not No/d001 to P131 Appendix Upgrading from the SJ300 Series Copying the parameter settings Index Instantaneous power failure or High-resolution absolute position Control 106Instantaneous power failure Monitor mode Motor constant Remote operator Appendix-1 Reset Operation time over signal RNT/plug-in time over signalPhase loss input Phase loss input protection Running time over / power-on time Over Thermistor Gain setting VP 1.7 th powerWindow comparator Wiring of control circuit terminal Torque biasing