Start frequency setting | Hitachi SJ700-2 manual

Related code b082: Start frequency adjustment

Chapter 4 Explanation of Functions

4.2.33 Start frequency setting

The start frequency setting function allows you to specify the inverter output frequency that the inverter initially outputs when an operation command is input.

Use this function mainly to adjust the start torque.

If the start frequency (b082) is set too high, the inverter will start the motor with a full voltage, which will increase the start current. Such status may trigger the overload restriction operation or make the inverter prone to easily tripping because of the overcurrent protection.

Specifying "04" (0SLV: 0Hz-range sensorless vector control) or "05" (V2: vector control with sensor) for the V/F characteristic curve selection (A044) disables the start frequency setting function.

	Item	Function code	Range of data	Description
	Start frequency	b082	0.10 to 9.99 (Hz)	Setting of the start frequency
	adjustment	b082	0.10 to 9.99 (Hz)	Setting of the start frequency
	adjustment

FW

b082

Output frequency

Output voltage

4.2.34 Reduced voltage start function

The reduced voltage start function enables you to make the inverter increase the output voltage gradually when starting the motor.

Set a small value for the reduced voltage start selection (b036) if you intend to increase the start torque. On the other hand, setting a small value will cause the inverter to perform full-voltage starting and to easily trip because of overcurrent.

Related code

b036: Reduced voltage start selection

b082: Start frequency adjustment

Item	Function code			Range of data		Description
Reduced voltage start			00		Disabling the reduced voltage starting
Reduced voltage start	b036				01: Short (about 6 ms)
selection	b036			01 to 255
selection				01 to 255	255: Long (about 1.53 s)
					255: Long (about 1.53 s)
	FW

Start frequency b082

Output frequency

Output voltage

Reduced Voltage Start		00	01 ･･･ 06
b036

4 - 42

Image 100

Hitachi SJ700-2 instruction manual Start frequency setting, Reduced voltage start function

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 Model No Fuse/circuit breaker a Type Rating 30 a40 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 Method of Inquiry and Product Warranty Product warrantyWarranty Terms Method of inquiry Exterior Views and Names of Parts Installation and Wiring Page Installation and Wiring Precautions for installation Inverter Ventilation fan Inverter AcceptableUnacceptableInverter capacity kW 18.5 Loss with 70% load W 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 200 to 240 V +10%, -15% 50/60 Hz ±5% 282 to 339 VDC380 to 480 V +10%, -15% 50/60 Hz ±5% TH FW 8 CM1 PL CM1 7 6FW 8 CM1 14 13 11 AL1 CM1 15 CM2 12 AL0 AL2 When using the internal interface power supply When using an external power supplySink logic 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 Monitor Mode Output frequency monitoringOutput current monitoring Rotation direction monitoring Intelligent output terminal status Intelligent input terminal statusScaled output frequency monitoring Torque command monitoring Power monitoringActual-frequency monitoring Torque bias monitoring Cumulative power monitoring Cumulative power-on time monitoringHeat sink temperature monitoring Motor temperature monitoring Current position monitor in absolute position control mode Life-check monitoringProgram counter display easy sequence function Program number monitoring easy sequence function Programming error monitoring Trip monitoring 1 toDC voltage monitoring BRD load factor monitoring Function Mode Output frequency settingKeypad Run key routing Rotational direction restriction Frequency source setting Run command source settingNo contact 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 Free-setting V/f frequency To 400.Hz Free-setting V/f frequencyTo free-setting V/f frequency 7 Hz To free-setting V/f frequency 6 Hz Torque boost setting B083 DC braking DB setting Edge mode A056 Example 1-a Example 1-bExample 2-a Example 2-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 Acceleration stop frequency setting Setting of 0 Hz disables the jump frequency functionSetting of the length of time to stop Frequency setting Acceleration PID function OI-L + O2 OI + O2Operation targets include + O2 Input to the OI terminal Operation targets are the inputs To the OI and O terminals 01 % FW on OFF FBV Onoff Two-stage acceleration/deceleration function 2CH Acceleration/deceleration curve selection You can set different patterns of motor accelerationInverter 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 5 b00400 Example 6 b00401Example 7 b00402 Example 8 b00400 Phase loss power input protection Function code Data Description Phase loss detectionEnable Enabling the protection Disabling the protection Constant-torque characteristic CharacteristicFree setting of electronic thermal characteristic Electronic thermal protection Setting of the current at each breakpoint Setting of the threshold level to outputThermal warning signal 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 Bit operation mode By setting multispeeds 1 to 7 A021 to A027Make multispeed s 0 to 7 available for selection 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 Analog command holding function AHD Speed error at rated torque aIntelligent pulse counter Pcnt and PCC 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 Low-current indication LOC signal Forward rotation signal FWRIrdy Inverter ready signal FWR Forward rotation signal Reverse rotation signal RVR Major failure signal MJARVR Reverse rotation signal MJA Major failure signal WCO/WCOI/WCO2 Input terminal response time Output signal delay/hold functionExternal thermistor function TH FM terminal Pulse output terminalFM siginal selection 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 Signal has been output until the brake is Brake Wait Time for Mechanical delay after the releaseWait time longer than the delay after 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 Online auto-tuning function Automatically tuned data online auto-tuning enabledFunction code Data Description Temperature compensation Disabling the secondary resistance compensation Then adjust the speed response H005/H205 Motor constants selectionIo as follows Voltage class 200 or 400 Sensorless vector control Sensorless vector, 0 Hz domain control Zero LV lmitCurrent limiter for the low-speed range Zero LV starting boost current Torque monitoring function Forcing function FOCOutput torque Motor capacity selection Torque limitation function Enable Enabling counterrotation prevention Reverse Run protection functionB041 B042 B044 B043 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 Pulse train position control mode Control block diagramFrequency command Hz = 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 Position range specification function Forward/reverse drive stop function FOT/ROTTeaching function Teaching selection P074 Servo-on function SON Fwrv Block diagram for pulse train frequency input Setting of the filter time constant forPulse train frequency input To +100. % Pulse train frequency limit Communication specifications Communication Functions Set this item when your inverter is Communication modeAscii 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 Inverter status a Inverter status B Inverter status CData Bytes See Note Status a Status B Status C Reserved Data monitored at tripping Inverter status B BytesInverter status C Bytes Bytes Decimal Ascii code Output current Station No. Command Parameter Response frame Positive response Frame formatData parameter number Bytes See Note 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 Transmission frame configuration Station No. Command Reference Ascii code conversion tableThis result is used as BCC Character data Ascii code Communication in Modbus-RTU mode Function code Maximum number of data Reads the coil statusReads registers Writes data to a coil CRC*1 Slave address Function code Exception code CRC-16 Code DescriptionAn unsupported function is specified Specified address is not found Intelligent input terminal Coil number Terminal status Read the data received in the response as follows Field name Sample setting Coil statusUpdating data upper digit FFh Updating data lower digit Query Response Field name Sample setting Intelligent input terminal Slave address Function code Exception code CRC-16 code Exception codes01h An unsupported function is specified 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 Precautions for Maintenance Ground Resistance Test with a MeggerMethod of Checking the Inverter DC-Bus Capacitor Life CurvePage Precautions for Maintenance and Inspection CleaningDaily inspection 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 Specifications of the 200 V class modelSpecifications of the 400 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 High-resolution absolute position Control 106 Instantaneous power failureInstantaneous power failure or Monitor mode Motor constant Operation time over signal RNT/plug-in time over signal Phase loss input Phase loss input protectionRemote operator Appendix-1 Reset Running time over / power-on time Over Gain setting VP 1.7 th power Window comparator Wiring of control circuit terminalThermistor Torque biasing