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User Manual of EM730/EM730E Series Inverter

145

Table 7-4 Relationship between Rated Power and Carrier Frequency Setting of Inverter

Inverter power

Pe≤4kW

5.5kW

～

7.5kW

11kW

～

45kW

55kW

～

90kW

110kW

～

560kW

Rated carrier

frequency

4.0kHz

2.0kHz

Maximum

allowable

carrier

frequency

16.0 kHz

10.0kHz

8.0kHz

4.0kHz

3.0kHz

Function code

name

Parameter description

Unit

Default

setting

Attribute

F00.24

Automatic
adjustment of
carrier frequency

0: Invalid
1: valid 1
2: valid 2

〇

F00.24=0: invalid

The carrier frequency is dependent on F00.23, but limited by the allowable maximum

carrier frequency. It will not change during operation.

F00.24=1: valid 1

The carrier frequency is affected by the inverter temperature and load based on the F00.23

setting. If the inverter temperature is too high or the load is too heavy, the carrier frequency will

be limited. When the set carrier frequency F00.23 is greater than the limit, the carrier frequency

of the inverter will be the limit during operation.

F00.24=2: valid 2

The carrier frequency is auto-tuned on the basis of the F00.23 setting.

Function

code

Function code name

Parameter description

Unit

Default

setting

Attribute

F00.25

Noise suppression of
carrier frequency

0: Invalid
1: valid

〇

F00.27

Noise suppression
intensity

～

150

100

●

When the noise suppression function is enabled (F00.25=1), the motor noise can be

suppressed to a certain extent.

Function code Function code name

Parameter description

Unit

Default

setting

Attribute

F00.28

Options of motor

0: parameter group of motor

〇

Содержание EM730 Series

Страница 1: ...ter status Support Wi Fi module or serial port access Rich and convenient PC background software functions No need for derating at the ambient temperature of 50 Support one key shuttle for fast and ac...

Страница 2: ...for any injury or loss arising from nonconforming operations Precautions Before installation Danger 1 Do not install the product in the case of water in the package or missing or damaged components fo...

Страница 3: ...e electric shock may be caused 4 Never connect the input power supply to the output terminals U V W of the inverter Pay attention to the marks of wiring terminals and connect wires correctly Otherwise...

Страница 4: ...rcuit connections in this manual Otherwise an accident may occur After power on Danger 1 Never touch the inverter and surrounding circuits with wet hands otherwise electric shock may occur 2 If the in...

Страница 5: ...the inverter otherwise personal injury or inverter damage may be caused 4 The parameters must be set after the inverter is replaced Plugs in all interfaces must be operated in the power off status 5...

Страница 6: ...uld not be used beyond the allowable working voltage range specified in this manual otherwise the components inside the inverter are prone to damage If necessary use the appropriate step up or step do...

Страница 7: ...llation dimensions 20 2 3 Installation Site Requirements and Management 24 2 4 Installation Direction and Space 25 Chapter 3 Wiring 26 3 1 Connection of Peripheral Device 26 3 2 Wiring of Main Circuit...

Страница 8: ...eter Group of Output Terminal of F03 Group 166 7 5 Start Stop Control Parameter Group of F04 Group 177 7 6 VF Control Parameter Group of F05 Group 185 7 7 Vector Control Parameter Group of F06 Group 1...

Страница 9: ...tion 299 8 3 Self identification Steps 300 Chapter 9 Protection Warning Solutions 301 9 1 Protection content 301 9 2 Protection analysis 306 9 3 Daily Maintenance of Inverter 310 9 4 Instructions for...

Страница 10: ...d output current A Single phase three p hase AC 200V 240V EM730 EM730E 0R4 2B 0 4 2 8 3 2 EM730 EM730E 0R7 2B 0 75 4 8 5 0 EM730 EM730E 1R5 2B 1 5 8 8 5 EM730 EM730E 2R2 2B 2 2 10 11 5 Three phase AC...

Страница 11: ...r supply Three phase 340V 10 to 460V 10 Single phase three phase 200V 10 to 240V 10 50 60Hz 5 voltage unbalance rate 3 Output Maximum output voltage The maximum output voltage is the same as the input...

Страница 12: ...ut voltage will basically remain unchanged Automatic current limit Output current is automatically limited to avoid frequent overcurrent trips DC braking Braking frequency 0 01 to maximum frequency Br...

Страница 13: ...n 1km it is derated by 1 per 100m The maximum allowable altitude is 3km Applicable environment 10 to 50 5 to 95 RH no condensation When the ambient temperature exceeds 50 C it needs to be derated by 3...

Страница 14: ...tion 1 2 2 Running mode of inverter The running mode of the inverter refers to the control law of the inverter to drive the motor to rotate at the required speed and torque The running mode includes G...

Страница 15: ...EM730E series inverter is mainly divided into the setting of main frequency source A setting referred to as main A setting of auxiliary frequency source B referred to as auxiliary B and setting of mai...

Страница 16: ...xiliary Frequency Source B As shown in Fig 1 3 the current setting channel is determined directly by the function code F00 05 during the setting of the auxiliary frequency source B and the process PID...

Страница 17: ...iction 8 digital potentiometer 8 Fig 1 5 Schematic Diagram of Torque Input Mode The jog speed setting mode is superior to other setting modes That is when the control terminals FJOG and RJOG are enabl...

Страница 18: ...sconneted 0 closed 1 disconneted a Two line running mode 0 F00 03 0 b Two line running mode 1 F00 03 1 Forward button RUN Stop button Xi CO M F R Run button RUN Xi F R 1 0 Stop button Forward Reverse...

Страница 19: ...Items Item to be confirmed Confirming methods Check whether the product is consistent with the order Check the nameplate on the side face of the inverter Check whether any part is damaged Check the ov...

Страница 20: ...0kW 0 37 37kW Input power voltage level 2 Single three phase 220V 3 Three phase 380V B Built in braking unit 2 2 Outline dimensions and installation dimensions EM730 EM730E series inverters involve 25...

Страница 21: ...User Manual of EM730 EM730E Series Inverter 21 W1 W H1 H D D1 d H2 D2 b Appearance of EM730 EM730E 030 3B to EM730 EM730E 075 3 inverters...

Страница 22: ...ies Inverter 22 D2 D1 W W1 H H1 H2 D c Appearance of EM730 EM730E 090 3 to EM730 EM730E 160 3 inverters 75 57 18 20 6 8 70 6 72 49 d EM730 keyboard appearance Fig 2 1 Outline Dimensions of EM730 EM730...

Страница 23: ...EM730 EM730E 4R0 3B EM730 EM730E 5R5 3B 109 98 207 196 154 103 160 5 5 EM730 EM730E 7R5 3B EM730 EM730E 011 3B 136 125 250 240 169 115 174 5 5 EM730 EM730E 015 3B EM730 EM730E 018 3B 190 175 293 280 1...

Страница 24: ...the plastic case is used at the ambient temperature above 40 remove the top baffle 3 The controller should be free from high temperature and humidity less than 90 RH or rainwater and other liquid dro...

Страница 25: ...er Remove the protection after installation 2 4 Installation Direction and Space The EM730 EM730E 1R5 3B inverters and above are equipped with the cooling fan for forced air cooling To ensure good cyc...

Страница 26: ...verter and peripheral devices is shown in Fig 3 1 Fig 3 1 Connection of Inverter and Peripheral Devices Power supply Circuit breaker or leakage protection switch Contactor AC input reactor Input side...

Страница 27: ...n circuit terminal of the EM730 EM730E series inverter consists of the following parts Three phase AC power input terminals R S T Earth terminal DC bus terminals Terminals of dynamic braking resistor...

Страница 28: ...User Manual of EM730 EM730E Series Inverter 28 b Schematic Diagram of Terminals 380V 2 2kW 4 0kW c Schematic Diagram of Terminals 380V 5 5kW 22kW with slight difference in the grounding position...

Страница 29: ...User Manual of EM730 EM730E Series Inverter 29 d Schematic Diagram of Terminals 380V 30kW 37kW e Schematic Diagram of Terminals 380V 45kW 110kW...

Страница 30: ...circuit terminals Terminal label Function description R L1 S L2 T L3 AC power input terminal connected to three phase AC power supply the single phase power input terminal can be connected with any tw...

Страница 31: ...circuit Installation of circuit breaker Install the air circuit breaker MCCB corresponding to the inverter between the power supply and input terminal The MCCB capacity should be 1 5 2 times the rated...

Страница 32: ...power of the inverter as shown in Fig 3 4 Do not control the operation and stop of the inverter via the electromagnetic contactor on the incoming line side Frequent use of this method is an important...

Страница 33: ...tromagnetic circuit breaker etc is connected near the inverter please install a surge suppressor Installation of noise filter on power supply side The noise filter is used to suppress the noise that i...

Страница 34: ...nnect the output terminals U V W of the inverter to those U V W of the motor During operation check whether the motor rotates forward when a forward rotation command is sent If the motor rotates rever...

Страница 35: ...tion and even damage the internal components of the inverter in severe cases When an electromagnetic contactor is used to switch the PF power supply make sure that switching is not performed until the...

Страница 36: ...uctive Interference Solution to RF interference The input cable output cable and inverter itself generates RF interference which can be reduced by installing noise filters on the input and output side...

Страница 37: ...n circuit are shown in Table 3 3 Table3 3 Cable Dimensions and Terminal Screw Specifications Frequency converter model Terminal Symbol Terminal Screw Tightening Torque N m Wire diameter mm Wire Type E...

Страница 38: ...ew 4 The specification of the ground wire should be the same as that of the power cable smaller than 16mm2 When the power cable is 16mm2 or larger the ground wire should not be smaller than 1 2 of the...

Страница 39: ...sition of control circuit terminal Fig 3 11 Layout of Control Circuit Terminals 1 3 3 2 Functions and wiring of control circuit terminals Table 3 3 Functions of Control Circuit Terminals Category Term...

Страница 40: ...PN input modes and the default mode is the NPN input mode X5 can also be used as the high frequency pulse input with the input frequency up to 100kHz X2 X3 X4 X5 Multi function digital output Y1 Open...

Страница 41: ...put signal is powered by an external power supply the wiring of terminals AI1 and AI2 is shown inFig 3 12 a When the analog voltage input signal is sent by a potentiometer the terminals AI1 and AI2 ar...

Страница 42: ...xibly connected with external devices The NPN or PNP mode NPN by default can be selected via the jumper cap J10 on the control panel The wiring of the multi function input terminal in different modes...

Страница 43: ...of internal power supply PNP b Use of external power supply PNP Fig 3 15 Wiring of Multi function Output Terminals Note 1 An anti parallel diode must be included in the relay wire package The absorpt...

Страница 44: ...nd inverter is performed through the connection and communication with the host The connection of the RS485 and RS485 RS232 adapters to EM730 EM730E series inverter is shown in Fig 3 16 Fig 3 17 and F...

Страница 45: ...n cable should be less than 50 m long and the distance between the control signal connection cable and power line should be greater than 30 cm Use the twisted pair shielded cable when analog signals a...

Страница 46: ...Grounding A A GND Multi function input terminal MC S L2 T L3 R L1 Inverter Open collector output 24V 50mA EC EB X1 X2 Y1 X5 X4 X3 Relay output contact DC30V 10mA to 1A AC250V 10mA to 3A EA Grounding...

Страница 47: ...e keyboard to that of the control panel via a network cable The keyboard extension cable should be no longer than 3m Then extension cable may be 10m long in the presence of Cat5E wires and good electr...

Страница 48: ...n the LED keyboard are as shown in Table 4 1 Table 4 1 Functions of Keys and Indicators on LED Keyboard Key Indicator Name Function Right Select the group number and function number of the currently m...

Страница 49: ...e potentiometer rotates clockwise and counterclockwise 4 2 Operation Mode of Keyboard with Digital Tube Display The LED keyboard menu is divided into the monitoring level Level 0 menu mode selection l...

Страница 50: ...l 2 menu and select any function code Then press the ENTER key to enter the Level 3 menu and view or modify the function code Except for a few special ones the function codes needed by general users c...

Страница 51: ...t has been successfully modified In the user defined mode enter the user defined function code according to the sequence defined in F11 00 F11 31 following the function code that has been successfully...

Страница 52: ...r defined menu mode to display the set function code For example F11 00 is set to U00 07 and F11 01 to U00 09 F11 00 and F11 01 will be defined as F00 07 and F00 09 respectively They are distinguished...

Страница 53: ...mode press the ENTER key to enter the Level 2 menu The first parameter different from the default settings of the inverter will be displayed starting from F00 00 When the right shift key is pressed i...

Страница 54: ...to switch the display of the protection code protection output frequency protection output current protection bus voltage and protection operation status 4 3 Protection Monitoring When the inverter i...

Страница 55: ...entiometer In this case turn the potentiometer key to enter the editing mode The value will change from the second digit of the digital tube by default The digital tube corresponding to the changed di...

Страница 56: ...ted P OFF will be displayed and the keyboard can be operated freely to exit the P OFF display and display normal information In case of no keyboard operation within 5s P OFF will be displayed again Af...

Страница 57: ...User Manual of EM730 EM730E Series Inverter 57 Chapter 5 Trial run 5 1 Inverter Commissioning Process Fig 5 1 Inverter Commissioning Flowchart...

Страница 58: ...al wiring confirmation Check whether the control terminals of the inverter are correctly and reliably connected to other controls Control terminal status confirmation Make sure that the control termin...

Страница 59: ...tart and stop are controlled by the host through the RS485 communication port Function code Function code name Parameter description Default setting Attribute F04 00 Start up method 0 direct start 1 s...

Страница 60: ...the terminal RUN to control the start and stop of the inverter and the terminal F R to control the forward reverse running If F00 21 is set to 1 and reverse running is disabled the F R terminal will...

Страница 61: ...erminal F R is normally ON for reverse running with valid pulse edges The terminal Xi is normally closed for stop with the valid level When the inverter is in the running status press Xi to stop it In...

Страница 62: ...rol SVC 0 F00 04 Options of main frequency source A 0 digital frequency setting F00 07 1 AI1 2 AI2 5 high frequency pulse input X5 6 Percentage setting of main frequency communication 7 Direct setting...

Страница 63: ...Parameter identification steps Where the motor and load can be separated the mechanical load and motor should be completely separated in the power off status After the power on set the command source...

Страница 64: ...s in Table 6 2 and each group contains several function codes Among them the F18 group is a monitoring parameter group used to view the inverter status the F19 group is a protection record group used...

Страница 65: ...current parameter selection or meaning Quantifier The ones tens hundreds thousands and tens of thousands represent one option or the current meaning of the function code Binary Each binary bit represe...

Страница 66: ...ged except in the running status Read only The current function code cannot be changed in any status 6 2 Table of functional parameters Function code Function code name Parameter description Unit Defa...

Страница 67: ...cy source B 4 switching between main frequency source A and main and auxiliary operation results 5 switching between auxiliary frequency source B and main and auxiliary operation results 6 Auxiliary f...

Страница 68: ...control 0 set by F00 18 1 AI1 2 AI2 3 retention 4 retention 5 high frequency pulse input X5 6 Communication setting percentage 7 Communication setting direct frequency 0 F00 18 Upper frequency limit...

Страница 69: ...tric motor 0 10 650 00 kW Depending on the motor type F01 02 Rated voltage of motor 50 2000 V Depending on the motor type F01 03 Rated current of motor 0 01 to 600 00 rated power of motor 75 kW 0 1 to...

Страница 70: ...ning coefficient 5 f asynchronous motor 10 00 100 00 70 00 F01 19 Stator resistance of synchronous motor 1 60000 rated power of motor 75kW 0 1 to 6000 0 rated power of motor 75 kW m Depending on the m...

Страница 71: ...tion input 24 Switching of RUN command to keyboard 25 switching of RUN command to communication 26 Frequency source switching 27 clearing of regular running time 28 speed control torque control switch...

Страница 72: ...121 External material cutoff signal 122 Wiring detection signal 123 Brake reset terminal F02 15 Positive negative logic 1 of digital input terminal D7 D6 D5 D4 D3 D2 D1 D0 00000 X5 X4 X3 X2 X1 0 posi...

Страница 73: ...ace AI1 0 analog input 1 digital input 0 below 1V 1 above 3V the same as last time under 1 3V Tens place AI2 0 analog input 1 digital input the same as above 00B F02 32 Options of analog input curve O...

Страница 74: ...2 52 Input setting of inflection point 1 of curve 4 100 0 100 0 50 0 F02 53 Input of inflection point 2 of curve 4 F02 51 F02 55 V 5 00 F02 54 Input setting of inflection point 2 of curve 4 100 0 100...

Страница 75: ...level detection ADT2 24 undervoltage state 26 up to the set time 27 zero speed running 38 off load 47 PLC output 67 Brake control 68 Material cutoff detection output 69 FDT1 lower limit pulse 70 FDT2...

Страница 76: ...tions of analog output M1 0 running frequency absolute value 1 set frequency absolute value 2 output torque absolute value 3 set torque absolute value 4 output current 5 Output voltage 6 bus voltage 7...

Страница 77: ...DC braking 0 00 30 00 0 00 invalid s 0 00 F04 06 Pre excitatio n current 50 0 500 0 100 0 no load current 100 0 F04 07 Pre excitatio n time 0 00 10 00 s 0 10 F04 08 Speed tracking mode Ones place Tra...

Страница 78: ...13 1 0 3000 F15 13 2 s 1 00 F04 18 Ending time of S curve in deceleration 0 00 30 00 F15 13 0 0 0 300 0 F15 13 1 0 3000 F15 13 2 s 1 00 F04 19 Stop mode 0 slow down to stop 1 free stop 0 F04 20 Start...

Страница 79: ...4 square V F 5 VF complete separation mode Ud 0 Uq K t voltage of separation voltage source 6 VF semi separation mode Ud 0 Uq K t F Fe 2 voltage of separation voltage source 0 F05 01 Frequency point...

Страница 80: ...oltage 0 0 100 0 100 0 rated voltage of motor 0 0 F05 09 Rise time of VF separation voltage 0 00 60 00 s 2 00 F05 10 Compensatio n gain of V F stator voltage drop 0 00 200 00 100 00 F05 11 V F slip co...

Страница 81: ...proportional gain ASR_P1 0 00 100 00 12 00 F06 01 Speed integral time constant ASR_T1 0 000 30 000 0 000 no integral s 0 200 F06 02 Speed proportional gain ASR_P2 0 00 100 00 8 00 F06 03 Speed integra...

Страница 82: ...I1 and AI2 0 F06 10 Upper limit of speed control motor torque 0 0 250 0 165 0 F06 11 Upper limit of speed control brake torque 0 0 250 0 165 0 F06 12 Excitation current proportional gain ACR P1 0 00 1...

Страница 83: ...ening voltage 70 00 100 00 95 00 F06 23 Maximum field weakening current of synchronous motor 0 0 150 0 100 0 is the rated current of the motor 100 0 F06 24 Proportional gain of flux weakening regulato...

Страница 84: ...quency band of injection current 0 00 300 00 ms 10 00 F06 32 Frequency of high frequency band of injection current 0 00 100 00 100 00 is the rated frequency of the motor 20 00 F06 33 Injection current...

Страница 85: ...of sliding mode of synchronous motor 0 005 0 100 0 100 F06 40 Amplitude of injected reactive current of synchronous motor 0 0 20 0 10 0 F06 41 Open loop low frequenc y processing of synchronous motor...

Страница 86: ...al gain of synchronous motor 0 00 10 00 1 00 F06 48 Filtering time constant of speed tracking of synchronous motor 0 00 10 00 ms 0 40 F06 49 Speed tracking control intensity of synchronous motor 1 0 1...

Страница 87: ...d protection 1 shielded protection F07 01 Motor overload protection gain 0 20 10 00 1 00 F07 02 Motor overload pre alarm coefficient 50 100 80 F07 06 Bus voltage control options Ones place Instantaneo...

Страница 88: ...F07 14 Protection retries 0 20 0 Disable protection retry 0 F07 15 Options of digital output action in protection retries 0 no action 1 action 0 F07 16 Interval of protection retries 0 01 30 00 s 0 5...

Страница 89: ...d protection s 1 0 F07 27 AVR function 0 Invalid 1 valid 2 automatic 1 F07 28 Stall protection detection time 0 0 6000 0 0 0 no stallprotection detection s 0 0 F07 29 Stall control intensity 0 100 20...

Страница 90: ...8 11 Multi segme nt speed 12 0 00 to maximum frequency F00 16 Hz 50 00 F08 12 Multi segme nt speed 13 0 00 to maximum frequency F00 16 Hz 50 00 F08 13 Multi segme nt speed 14 0 00 to maximum frequency...

Страница 91: ...ng time of the second segment 0 0 6000 0 s min 5 0 F08 23 Setting of the third segment Ones place Running direction options 0 forward 1 reverse Tens place Acceleration and deceleration time options 0...

Страница 92: ...ation and deceleration time 4 0 F08 30 Running time of the sixth segment 0 0 6000 0 s min 5 0 F08 31 Setting of the seventh segment Ones place Running direction options 0 forward 1 reverse Tens place...

Страница 93: ...ration time 2 2 acceleration and deceleration time 3 3 acceleration and deceleration time 4 0 F08 38 Running time of the tenth segment 0 0 6000 0 s min 5 0 F08 39 Setting of the eleventh segment Ones...

Страница 94: ...ons 0 forward 1 reverse Tens place Acceleration and deceleration time options 0 acceleration and deceleration time 1 1 acceleration and deceleration time 2 2 acceleration and deceleration time 3 3 acc...

Страница 95: ...ve 1 negative 0 F09 05 Proportional gain 1 0 00 100 00 0 40 F09 06 Integral time 1 0 000 30 000 0 000 no integral s 2 000 F09 07 Differential time 1 0 000 30 000 ms 0 000 F09 08 Proportional gain 2 0...

Страница 96: ...0 00 100 00 100 00 invalid integral separation 100 00 F09 21 PID setting change time 0 000 30 000 s 0 000 F09 22 PID feedback filtering time 0 000 30 000 s 0 000 F09 23 PID output filtering time 0 000...

Страница 97: ...09 34 Multi segme nt PID setting 3 0 0 to PID setting feedback range F09 03 0 0 F09 35 Upper limit of feedback voltage Lower limit of feedback voltage to 10 00 V 10 00 F09 36 Lower limit of feedback v...

Страница 98: ...F10 02 Modbus data format 0 1 8 N 1 1 start bit 8 data bits 1 stop bit 1 1 8 E 1 1 start bit 8 data bits 1 even parity check bit 1 stop bit 2 1 8 O 1 1 start bit 8 data bits 1 odd parity check bit 1...

Страница 99: ...CI sending timeout resetting 0 invalid resetting 1 valid resetting 1 F10 58 Delay time of SCI sending timeout resetting 110 10000 mS 150 F10 59 SCI response option 0 Reply to both read and write comma...

Страница 100: ...ected parameter 14 U02 01 F11 14 User selected parameter 15 U02 02 F11 15 User selected parameter 16 U03 00 F11 16 User selected parameter 17 U03 02 F11 17 User selected parameter 18 U03 21 F11 18 Use...

Страница 101: ...l command channels valid 1 F12 02 Parameter locking 0 do not lock 1 reference input not locked 2 all locked except for this function code 0 F12 03 Parameter copying 0 No operation 1 parameter upload t...

Страница 102: ...65535 h XXX F12 18 Cumulative running time min 0 59 min XXX F12 19 Rated power of inverter 0 40 650 00 kW Depending on the motor type F12 20 Rated voltage of inverter 60 690 V Depending on the motor...

Страница 103: ...ter 1 of Mode 1 LED stop status display parameter 5 0 00 99 99 18 00 F12 34 Running status display parameter 2 of Mode 1 LED stop status display parameter 1 0 00 99 99 18 01 F12 35 Running status disp...

Страница 104: ...nvalid 1 valid 0 F12 42 Frequency setting of digital potentiomete r 0 00 to maximum frequency F00 16 Hz 0 00 F12 43 Digital potentiomete r torque setting 0 00 Digital torque setting F13 02 0 0 F12 45...

Страница 105: ...t torque 2 200 0 200 0 0 0 F13 05 Multi segme nt torque 3 200 0 200 0 0 0 F13 06 Torque control acceleration and deceleration time 0 00 120 00 s 0 00 F13 08 Upper frequency limit options of torque con...

Страница 106: ...otor type F14 02 Rated voltage of motor 50 2000 V Depending on the motor type F14 03 Rated current of motor 0 01 to 600 00 rated power of motor 75 kW 0 1 to 6000 0 rated power of motor 75 kW A Dependi...

Страница 107: ...the motor type F14 13 No load excitation current of asynchronous motor 0 01 to 600 00 rated power of motor 75 kW 0 1 to 6000 0 rated power of motor 75 kW A Depending on the motor type F14 14 Flux wea...

Страница 108: ...ronous motor F14 34 Motor parameter self learning 00 No operation 01 static self learning of asynchronous motor 02 rotation self learning of asynchronous motor 03 inertia self learning of asynchronous...

Страница 109: ...0 and F06 11 1 AI1 2 AI2 3 retention 4 retention 5 Communication setting percentage 6 the larger of AI1 and AI2 7 The smaller of AI1 and AI2 0 F14 46 Upper limit of speed control motor torque 0 0 250...

Страница 110: ...lid 1 direct calculation 2 automatic adjustment 2 F14 58 Flux weakening voltage 70 00 100 00 95 00 F14 59 Maximum field weakening current of synchronous motor 0 0 150 0 100 0 is the rated current of t...

Страница 111: ...ction current 0 00 100 00 100 00 is the rated frequency of the motor 20 00 F14 69 Injection current f high frequency band 0 0 30 0 100 0 is the rated current of the motor 8 0 F14 70 Regulator gain of...

Страница 112: ...tage of separation voltage source 0 F14 81 Multi point VF frequency F1 of motor 2 0 00 F14 83 Hz 0 50 F14 82 Multi point VF voltage V1 of motor 2 0 0 100 0 100 0 Rated voltage 1 0 F14 83 Multi point V...

Страница 113: ...ime 2 0 00 650 00 F15 13 0 0 0 6500 0 F15 13 1 0 65000 F15 13 2 s 15 00 F15 04 Deceleration time 2 0 00 650 00 F15 13 0 0 0 6500 0 F15 13 1 0 65000 F15 13 2 s 15 00 F15 05 Acceleration time 3 0 00 650...

Страница 114: ...0 1s 2 1s 0 F15 14 Frequency hopping point 1 0 00 600 00 Hz 600 00 F15 15 Hopping range 1 0 00 20 00 0 00 is invalid Hz 0 00 F15 16 Frequency hopping point 2 0 00 600 00 Hz 600 00 F15 17 Hopping range...

Страница 115: ...sis 0 00 to F15 28 valid down in one direction 5 00 F15 30 Options of energy consumption braking function 0 Invalid 1 valid 0 F15 31 Energy consumption braking voltage 110 0 140 0 380V 100 0 537V 125...

Страница 116: ...15 13 2 s 1 00 F15 66 Overcurrent detection level 0 1 300 0 0 0 no detection 100 0 corresponding to the rated current of motor 200 0 F15 67 Overcurrent detection delay time 0 00 600 00 s 0 00 F15 68 M...

Страница 117: ...when the power on time is up h 0 F16 08 Setting of cumulative running arrival time 0 65535 0 disable the protection when the running time is up h 0 F16 09 Factory password 0 65535 XXXX F16 10 Analog o...

Страница 118: ...n options 0 F17 08 Virtual input positive nega tive logic D7 D6 D5 D4 D3 D2 D1 D0 000 00000 VX8 VX7 VX6 VX5 VX4 VX3 VX2 VX1 0 positive logic valid in the closed state invalid in the open state 1 Negat...

Страница 119: ...s 0 000 F17 17 VX4 valid delay time 0 000 30 000 s 0 000 F17 18 VX4 invalid delay time 0 000 30 000 s 0 000 F17 19 VY1 virtual output function options The same as the function options of digital outp...

Страница 120: ...d delay time 0 000 30 000 s 0 000 F17 32 VY2 invalid delay time 0 000 30 000 s 0 000 F17 33 VY3 valid delay time 0 000 30 000 s 0 000 F17 34 VY3 invalid delay time 0 000 30 000 s 0 000 F17 35 VY4 vali...

Страница 121: ...ge 1 15 XXX F18 12 PLC running time at the current stage 0 0 6000 0 XXX F18 14 Load rate 0 65535 rpm XXX F18 15 UP DOWN offset frequency 0 00 to 2 Maximum frequency F00 16 Hz XXX F18 16 PID setting 0...

Страница 122: ...F18 34 Actual length 0 65535 m XXX F18 35 Remaining time of regular running 0 0 6500 0 min XXX F18 36 Rotor position of synchronous motor 0 0 359 9 XXX F18 39 VF separation target voltage 0 690 V XXX...

Страница 123: ...ircuit protection E02 instantaneous overcurrent E04 steady state overcurrent E05 Overvoltage E06 Undervoltage E07 input phase loss E08 output phase loss E09 inverter overload E10 inverter overheat pro...

Страница 124: ...9 04 Operating status in protection 0 not running 1 forward acceleration 2 reverse acceleration 3 forward deceleration 4 reverse deceleration 5 constant speed in forward running 6 reverse constant spe...

Страница 125: ...action channel 0 feedforward gain set source B 1 Feedforward gain set source A 2 Feedforward gain 10V 1 F27 02 Feedforward gain input mode 0 No change in feedforward gain 1 0 00 to upper limit of feed...

Страница 126: ...11 F27 15 Feedforward increment 2 0 00 50 00 S 0 30 F27 16 Feedforward increment 3 0 00 50 00 S 0 75 F27 17 Feedforward increment 4 0 00 50 00 S 1 55 F27 18 Feedforward increment 5 0 00 50 00 S 4 00...

Страница 127: ...t of material cutoff detection after parking 0 00 60 00 Hz 5 00 F27 23 Time of continuous running after material cutoff 0 0 60 0 S 10 0 F27 24 Frequency of continuous running after material cutoff 0 0...

Страница 128: ...User Manual of EM730 EM730E Series Inverter 128 signal F27 30 Filtering time for material cutoff detection 1 100 ms 5 F27 36 Current value of feedforward gain 500 0 500 0...

Страница 129: ...nd other loads 1 In order to improve the control performance self learning is needed to obtain the correct motor parameters before vector control 2 In the vector control mode the inverter can be used...

Страница 130: ...inal command source also depends on the input functions 24 switching from the Run command to keyboard and 25 switching from the Run command to communication If the input function 24 switching from the...

Страница 131: ...s RUN and F R are enabled simultaneously the inverter will be stopped If reverse running is disabled the terminal F R will not be available If the mode of deceleration to stop is selected the forward...

Страница 132: ...is as shown in Fig 7 7 b The terminal Xi is for three line running and stop control as defined by F02 00 to F02 04 F00 03 3 the terminal RUN is for running Xi for stop and F R for forward reverse cont...

Страница 133: ...Direct setting of main frequency communication 8 digital potentiometer setting 8 F00 04 0 digital frequency setting F00 07 The main frequency source A depends on the digital frequency setting F00 07 F...

Страница 134: ...ion setting of the main channel frequency A The 7001H data range is 100 00 to 100 00 and the 7015H data range is 0 00 to F00 16 maximum frequency as detailed in Table 12 31 F00 04 8 digital potentiome...

Страница 135: ...tching of main frequency source to communication setting Valid depending on the communication input the same as the function code F00 04 6 7 All invalid depending on the setting of function code F00 0...

Страница 136: ...he auxiliary frequency B is set to 7002H communication setting of the auxiliary channel frequency B F00 16 maximum frequency b F00 05 7 the auxiliary frequency B is set to 7016H communication setting...

Страница 137: ...ncy source B The final set frequency only depends on the auxiliary frequency source B F00 06 2 main and auxiliary operation results The final set frequency depends on the main and auxiliary operation...

Страница 138: ...f main and auxiliary frequency sources 0 Select the main and auxiliary operation mode The final results are limited by the lower frequency limit F00 19 and upper frequency limit F00 18 F00 08 0 main f...

Страница 139: ...auxiliary frequency source B will change along with that of the main frequency source A according to the maximum frequency by default Function code Function code name Parameter description Unit Defaul...

Страница 140: ...requency is directly set to the synthetic frequency of main and auxiliary channels F00 13 1 AI1 synthetic frequency of main and auxiliary channels F00 13 2 AI2 synthetic frequency of main and auxiliar...

Страница 141: ...ation and deceleration time is in 0 01 s 0 1 s or 1s depending on the F15 13 Function code Function code name Parameter description Unit Default setting Attribute F00 16 Maximum frequency 1 00 600 00...

Страница 142: ...n and the like If the master slave communication F10 05 1 is enabled and the inverter works as the slave F10 06 0 the actual upper frequency limit is 700FH master slave communication setting F10 08 sl...

Страница 143: ...rection of the motor is controlled by the setting of the F R terminal or F00 20 F00 21 1 reverse running is prohibited The motor can only work in one direction and the F R terminal and F00 20 are inva...

Страница 144: ...d power of inverter 110 00kW and above kHz 4 0 7 5 and below 2 0 Increasing the carrier frequency can reduce the motor noise but will lead to the heat increase of the inverter When the carrier frequen...

Страница 145: ...requency is affected by the inverter temperature and load based on the F00 23 setting If the inverter temperature is too high or the load is too heavy the carrier frequency will be limited When the se...

Страница 146: ...Motor 2 Valid Motor 1 F00 F01 F06 Function code Function code name Parameter description Unit Default setting Attribute F00 29 User password 0 65535 0 F00 29 is used to set a password to enable the p...

Страница 147: ...F01 00 Motor type 0 ordinary asynchronous motor 1 variable frequency asynchronous motor 2 permanent magnet synchronous motor 0 The EM730 EM730E series inverter supports asynchronous and synchronous mo...

Страница 148: ...s of F01 03 to F01 08 of the inverter will change automatically Pay attention to this during operation Function code Function code name Parameter description Unit Default setting Attribute F01 09 Stat...

Страница 149: ...lf identification be sure to set F01 00 to F01 08 correctly according to the actual situation The specific meanings of motor parameters are shown in Fig 7 11 U1 I1 I2 I0 Lm R1 L1 Lm R2 L2 Lm 1 s s R2...

Страница 150: ...del Confirm F01 21 q axis inductance of synchronous motor 0 01 to 600 00 rated power of motor 75 kW 0 001 to 60 000 rated power of motor 75 kW mH Model Confirm F01 22 Counter electromotive force of sy...

Страница 151: ...arning This mode is mainly used when the motor can rotate However loads should be avoided or minimized otherwise self learning will have poor effects F01 34 11 the synchronous motor remains stationary...

Страница 152: ...ding function set to digital input as detailed in the F02 31 description Function code Function code name Parameter description Unit Default setting Attribute F02 00 Options of X1 digital input functi...

Страница 153: ...source is set to terminal control F00 02 1 the terminal control mode is set to three line control F00 03 2 3 and the function terminal is valid the inverter will execute the stop command See the expla...

Страница 154: ...lid 0 by default 14 13 12 11 Set frequency of the inverter 0 0 0 0 Depending on the option F00 04 of the main frequency source A 0 0 0 1 Multi segment speed 1 F08 00 0 0 1 0 Multi segment speed 2 F08...

Страница 155: ...F15 13 for details 20 Acceleration and deceleration time terminal 2 20 19 Acceleration and deceleration time 0 0 The first group acceleration time F00 14 deceleration time F00 15 0 1 The second group...

Страница 156: ...30 Motor 1 Motor 2 switching This terminal is used to determine the current valid motor in conjunction with F00 28 If 30 terminal is valid the motors will be switched based on the F00 28 setting See...

Страница 157: ...d the output of the process PID module will remain unchanged For more information refer to the description of the function code F09 18 42 Process PID integral pause When this terminal is valid the PID...

Страница 158: ...of main frequency source to AI1 53 Switching of main frequency source to AI2 55 Switching of main frequency source to high frequency pulse input 56 Switching of main frequency source to communication...

Страница 159: ...al This is a dedicated function for winding applications which is used for wiring detection When the valid or invalid time of the wiring detection signal expires E44 protection will be reported 123 Br...

Страница 160: ...in the following table Table 7 7 Function Code Details of Bit Operation Setting item X5 X4 X3 X2 X1 Corresponding bit 4 3 2 1 0 Settings 0 1 0 1 0 1 0 1 0 1 The seventh bit is reserved and cannot be...

Страница 161: ...al circumstances Where adjustment is required pay attention to the relationship between the filtering time and terminal action duration to avoid the susceptibility to interference due to insufficient...

Страница 162: ...code is set to 0 000s the corresponding delay will be invalid Function code Function code name Parameter description Unit Default setting Attribute F02 31 Options of analog input function Ones place...

Страница 163: ...Default setting Attribute F02 32 Options of analog input curve Ones place Options of AI1 curve 0 curve 1 1 curve 2 2 curve 3 3 curve 4 Tens place AI2 curve selection 0 curve 1 1 curve 2 2 curve 3 3 c...

Страница 164: ...F02 51 F02 55 V 7 50 F02 54 Input setting of inflection point 2 of curve 4 100 0 100 0 75 F02 55 Maximum input of curve 4 F02 53 10 00 V 8 80 F02 56 Maximum input setting of curve 4 100 0 100 0 100 F0...

Страница 165: ...o 0 and 10V corresponds to 100 F02 62 3 10 10V AI1 is the voltage type with a range of 10 10V The input voltage 10 to 10V corresponds to the setting 100 to 100 10V corresponds to 100 and 10V correspon...

Страница 166: ...ital output terminal Y1 and one relay output terminal R1 Function code Function code name Parameter description Unit Default setting Attribute F03 00 Options of Y1 output function SeeTable 7 8 Functio...

Страница 167: ...requency detection FDT2 When the output frequency is greater than the result of output frequency detection FDT2 F15 23 in the running status the current output will be valid When the inverter is not i...

Страница 168: ...F07 12 5 0 the current output will be invalid and when the output current is an intermediate value the current output will remain unchanged 12 Valid overvoltage stall When the output voltage F18 07 i...

Страница 169: ...7 is greater than or equal to the upper limit F09 16 of PID output during operation the current output will be valid otherwise the output will be invalid 20 Reach the lower limit of PID feedback If th...

Страница 170: ...enabled the output of this function will be valid 68 Material cutoff detection output This is a dedicated function for winding applications In case of material cutoff the output of this function will...

Страница 171: ...When the selected function is disabled the EB EC is normally closed and EA EC is normally open When the selected function is enabled the internal relay coil will be powered on the EB EC will be disco...

Страница 172: ...is valid in the closed state invalid in the open state Pre output Positive logic output Negative logic output Valid Active level Inactive level Inactive level Active level Invalid Fig 7 14 Schematic D...

Страница 173: ...tting the corresponding bit of this function code to 1 If F03 08 xxx1x is set and the FAR output is valid the actually selected output terminal will not output the active level This function code is s...

Страница 174: ...ith the valid delay the corresponding output terminal will output the active level When the function changes from the valid to invalid status and is maintained with the invalid delay the corresponding...

Страница 175: ...owing the same change trend Specific options are described in Table 7 9 Table 7 9 Function List of Multi function Analog Output Terminal Settings Function Description 0 Operating frequency absolute va...

Страница 176: ...orresponding to the output 0 0 to 100 0 Fmax maximum frequency F00 16 Ie rated current of the inverter F12 21 Ue rated voltage of the inverter F12 20 Pe rated power of the inverter F12 19 The output p...

Страница 177: ...o output 1 Output When the output functions of Y1 and R1 are set to 47 PLC output the output result will be controlled by the corresponding bit of F03 31 0 indicates no output and 1 indicates that the...

Страница 178: ...starting frequency should be maintained for some time The starting frequency F04 01 is not limited by the lower frequency limit Function code Function code name Parameter description Unit Default sett...

Страница 179: ...fault setting Attribute F04 08 Speed tracking mode Ones place Tracking start frequency 0 maximum frequency 1 stop frequency 2 power frequency Tens place Selection of search direction 0 search only in...

Страница 180: ...ed tracking from the predetermined frequency The duration is the time for the rated frequency to decrease to 0 00Hz F04 11 current tracking ratio to the rated current of the inverter The lower the cur...

Страница 181: ...time is set by the function codes F00 14 and F00 15 by default F04 14 1 continuous S curve acceleration and deceleration The output frequency increases or decreases according to the curve The S curve...

Страница 182: ...ction code name Parameter description Unit Default setting Attribute F04 19 Stop mode 0 slow down to stop 1 Free stop 0 F04 19 0 deceleration to stop The motor decelerates to stop according to the set...

Страница 183: ...in stop 0 00 30 00 s 0 50 F04 20 Set the starting frequency of DC braking in deceleration to stop Once the output frequency is less than the set frequency during deceleration stop and the time of DC...

Страница 184: ...te F04 24 Flux braking gain 100 150 100 no flux braking 100 When the magnetic flux braking is valid F04 24 100 the motor can be quickly slowed down by increasing its magnetic flux and the electric ene...

Страница 185: ...code Function code name Parameter description Unit Default setting Attribute F04 29 Zero speed check frequency 0 00 5 00 Hz 0 25 When the output frequency is lower than the zero speed judgment freque...

Страница 186: ...a VF curve between the linear VF and square VF F05 00 4 square V F It is suitable for centrifugal loads such as fans and pumps F05 00 5 VF complete separation mode In this case the output frequency an...

Страница 187: ...multi point polyline VF is selected F05 00 1 All V F curves are dependent on the curve set by the percentage of input frequency and the percentage of output voltage linearized in sections within diff...

Страница 188: ...tting of VF separation voltage 0 0 to 100 0 100 0 Rated voltage of motor 0 0 VF separation is usally applied in induction heating inverter power supply torque motor control etc When VF separation cont...

Страница 189: ...cation F10 05 1 is enabled and the inverter works as the slave F10 06 0 the VF separation output voltage is 700FH master slave communication setting F01 02 or others rated voltage of the motor F10 08...

Страница 190: ...iltering time 0 00 10 00 s 1 00 As the load increases the rotor speed of the motor will decrease To make the rotor speed of the motor close to the synchronous speed under rated load slip compensation...

Страница 191: ...ors This parameter refers to the output frequency drop of the inverter under the rated load Function code Function code name Parameter description Unit Default setting Attribute F05 16 Energy saving r...

Страница 192: ...small however the system may be over tuned to cause oscillation Users should adjust the above speed PI parameters according to the actual load characteristics Generally as long as the system does not...

Страница 193: ...s 0 001 Speed loop output filtering can reduce the impact on the current loop but the value of F06 07 should not be too large Otherwise slow responses may be caused Use the default settings under norm...

Страница 194: ...peed control torque F06 09 0 depending on F06 10 and F06 11 The upper limit of electric torque is F06 10 and that of braking torque is F06 11 F06 09 1 AI1 F06 09 2 AI2 The upper torque limit is depend...

Страница 195: ...rtional gain ACR P1 0 00 100 00 0 50 F06 13 Excitation current integral time constant ACR T1 0 0 00 600 00 0 00 no integral ms 10 00 F06 14 Torque current proportional gain ACR P2 0 00 100 00 0 50 F06...

Страница 196: ...r When the maximum speed of the motor does not meet user requirements the flux weakening function of the synchronous motor should be enabled to increase the speed EM730 EM730E has two flux weakening m...

Страница 197: ...Frequency of low frequency band of injection current 0 00 100 00 100 00 is the rated frequency of the motor 10 00 F06 29 Injection current of low frequency band 0 0 60 0 100 0 is the rated current of...

Страница 198: ...mic speed response of the inverter is adjusted by changing the speed proportional gain ASR_P and speed integral time ASR_T of the speed PI regulator The increase in ASR_P or decrease in ASR_T may acce...

Страница 199: ...king of synchronous motor 0 00 10 00 ms 0 40 F06 49 Speed tracking control intensity of synchronous motor 1 0 100 0 5 0 F06 50 Speed tracking control threshold of synchronous motor 0 00 10 00 0 20 F06...

Страница 200: ...The inverse time curve of motor overload protection is 200 F07 01 rated current of the motor sending an alarm of motor overload protection E13 if the duration reaches one minute 150 F07 01 rated curre...

Страница 201: ...rence deceleration time F07 06 1X Valid overvoltage stall When the overvoltage stall is valid the stall control voltage is dependent on F07 07 The DC bus overvoltage is usually caused by deceleration...

Страница 202: ...p recovery voltage 0 00 100 00 s 0 5 F07 30 Instantaneous stop no stop deceleration time 0 00 300 00 s 20 00 When the bus voltage is lower than the instantaneous stop non stop action voltage F07 08 th...

Страница 203: ...hen the bus voltage reaches the instantaneous stop non stop action voltage the speed set based on the instantaneous stop non stop slowdown time F07 30 will constantly decrease to 0 regardless of volta...

Страница 204: ...Fig 7 25 Fig 7 25 Current Limit Process F07 12 is used to set the operating conditions of current limit If the current of the inverter is greater than the set value of this code the current limit fun...

Страница 205: ...impact of occasional protection on the normal operation of the system This is valid only for protections of F07 18 F07 32 and F07 34 If protection retry is enabled this will be performed after a corr...

Страница 206: ...1 E16 E15 E14 E13 E08 E07 F07 20 E28 E27 E23 Correspond ing bit 7 6 5 4 3 2 1 0 Settings 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 For example To stop the inverter according to the stop mode F04 19 after the E0...

Страница 207: ...keep it at the rated output voltage Function code Function code name Parameter description Unit Default setting Attribute F07 28 Stall protection detection time 0 0 6000 0 0 0 no stall protection dete...

Страница 208: ...ncy F00 16 Hz 50 00 The 16 segment speed can be provided according to the multi segment speed control terminal 15 segment frequency command and digital frequency setting F00 07 Table 7 12 Combination...

Страница 209: ...d 15 F08 14 Precautions for setting The start and stop in multi segment speed operation depends on the function code F00 02 The acceleration deceleration time in multi segment speed operation can be c...

Страница 210: ...The last segment refers to the segment that is not set to 0 judged from the running time F08 48 of the 15th segment toward the 1st segment T1 T2 T4 T5 T12 T13 1 2 4 5 12 13 Output frequency Hz Time s...

Страница 211: ...tinue to run from the memory stage when the inverter is powered on again If you choose no memory the PLC process will be performed every time the inverter is powered on Function code Function code nam...

Страница 212: ...time 3 3 acceleration and deceleration time 4 0 F08 22 Running time of the second segment 0 0 6000 0 s min 5 0 F08 23 Setting of the third segment Ones place Running direction options 0 forward 1 reve...

Страница 213: ...ration and deceleration time 1 1 acceleration and deceleration time 2 2 acceleration and deceleration time 3 3 acceleration and deceleration time 4 0 F08 28 Running time of the fifth segment 0 0 6000...

Страница 214: ...egment Ones place Running direction options 0 forward 1 reverse Tens place Acceleration and deceleration time options 0 acceleration and deceleration time 1 1 acceleration and deceleration time 2 2 ac...

Страница 215: ...nd deceleration time 4 0 F08 38 Running time of the tenth segment 0 0 6000 0 s min 5 0 F08 39 Setting of the eleventh segment Ones place Running direction options 0 forward 1 reverse Tens place Accele...

Страница 216: ...acceleration and deceleration time 2 2 acceleration and deceleration time 3 3 acceleration and deceleration time 4 0 F08 44 Running time of the thirteenth segment 0 0 6000 0 s min 5 0 F08 45 Setting...

Страница 217: ...ibed below with the 13th segment the last segment as an example The specific operation is shown in Fig 7 F08 12 50 00 the operating frequency of 13th segment is 50 00Hz F08 43 31 the operating directi...

Страница 218: ...ly proportional control is enabled there are steady state errors in the system output Integral I In the integral control mode the output of the controller is proportional to the integral of the input...

Страница 219: ...mmunication F10 05 1 is enabled and the inverter works as the slave F10 06 0 the specific setting percentage is 700FH master slave communication setting F10 08 slave receiving proportional coefficient...

Страница 220: ...e is 7005H communication setting of process PID feedback and the 7005H data range is 100 00 to 100 00 as detailed in Table 12 31 Function code Function code name Parameter description Unit Default set...

Страница 221: ...0 40 F09 06 Integral time 1 0 000 to 30 000 0 000 no integral s 2 000 F09 07 Differential time 1 0 000 30 000 ms 0 000 F09 08 Proportional gain 2 0 00 100 00 0 40 F09 09 Integral time 2 0 000 to 30 00...

Страница 222: ...of parameters As described in the table when the function code F09 11 is set to 0 the PID parameters will not be switched and the first group of parameters F09 05 to F09 07 will prevail when the funct...

Страница 223: ...iption Unit Default setting Attribute F09 14 Initial PID value 0 00 100 00 0 00 F09 15 PID initial value holding time 0 00 650 00 s 0 00 The inverter starts running and the process PID module constant...

Страница 224: ...t range of the PID module in the whole process is F09 17 F09 16 That is if the actual adjustment result is beyond this range the output will be based on the boundaries Function code Function code name...

Страница 225: ...needed sometimes while integral adjustment is not needed For this reason the EM730 EM730E series inverter has a special integral separation function When the deviation between the PID setting and feed...

Страница 226: ...he process closed loop system F09 23 is used to filter the PID output This is helpful to reduce the sudden changes in the output frequency of the inverter but will also cause the decline of the respon...

Страница 227: ...he PID setting feedback range 100 00 F09 29 Sleep delay time 0 0 6500 0 s 0 0 F09 30 Wake up action point 0 00 100 00 100 00 corresponds to the PID setting feedback range 0 00 F09 31 Wake up delay tim...

Страница 228: ...restart after the stop or sleep or the output frequency of the inverter reaches the lower limit causing the failure to continue to decelerate due to the lower frequency limit or lower output limit of...

Страница 229: ...nction code Function code name Parameter description Unit Default setting Attribute F09 35 Upper limit of feedback voltage Lower limit of feedback voltage to 10 00 V 10 00 F09 36 Lower limit of feedba...

Страница 230: ...PID setting 90 0 F09 39 0 target pressure F09 01 coefficient of wake up action point F09 40 preset F09 39 1 wake up action point F09 30 The PID will wake up if the value is less than the wake up poin...

Страница 231: ...stations at most 0 is the broadcast address which does not need to be set All slave inverters can be recognized The slaves and hosts attached to the same network must follow the same sending and recei...

Страница 232: ...data formats according to the Modbus RTU combinations in communication Start Bit Valid Data Check Bit Stop Bit 1 7 6 5 4 3 2 1 0 N O E 1 If F10 02 0 it means that the current data consists of one star...

Страница 233: ...arising from too long operation in the protection status F10 03 should be set to be invalid under normal circumstances This parameter will be set only in the continuous communication system to monito...

Страница 234: ...8 Proportional factor of slave reception 0 00 10 00 multiple 1 00 F10 09 Host sending interval 0 000 30 000 s 0 200 The EM730 EM730E series inverter supports the master slave communication function Th...

Страница 235: ...0 For the application PLC controller HMI inverter you can set F10 56 11 after debugging Then all write data of PLC communication will not be stored which can avoid damage to the memory If you need par...

Страница 236: ...Attribute F11 00 User selected parameter 1 The displayed content is Uxx xx which means that the Fxx xx function code is selected If the F11 00 function code is enabled the keyboard will display U00 00...

Страница 237: ...r 24 U08 00 F11 24 User selected parameter 25 U19 00 F11 25 User selected parameter 26 U19 01 F11 26 User selected parameter 27 U19 02 F11 27 User selected parameter 28 U19 03 F11 28 User selected par...

Страница 238: ...valid 1 According to the setting of the function code F00 02 command source option the command sources are divided into the keyboard terminal and communication If the terminal is selected as the curre...

Страница 239: ...ent PID setting 1 F08 06 Multi segment speed 7 F09 33 Multi segment PID setting 2 F08 07 Multi segment speed 8 F09 34 Multi segment PID setting 3 F08 08 Multi segment speed 9 F13 03 Multi segment torq...

Страница 240: ...e and finally set the other inverters to F12 03 2 to download the parameters to these inverters This function can be applied to quickly set the parameters of several inverters Even if some parameter s...

Страница 241: ...set frequency plus offset frequency The keyboard will have the normal display 2 s after the key is released Terminal UP DOWN After the digital input port is set to the corresponding function terminal...

Страница 242: ...cumulative power on time of the inverter from delivery to the current moment you only need to power on the inverter The cumulative power on time is accurate to one minute and nearly 65536 hours about...

Страница 243: ...ribute F12 22 Performance software S N 1 XXX XX XXX XX F12 23 Performance software S N2 XX XXX XX XXX F12 24 Functional software S N 1 XXX XX XXX XX F12 25 Functional software S N 2 XX XXX XX XXX F12...

Страница 244: ...F12 37 You can select any function code F12 33 18 00 means that the function code F18 00 is displayed Function code Function code name Parameter description Unit Default setting Attribute F12 41 Optio...

Страница 245: ...nitoring status 7 14 Torque Control Parameter Group of F13 Group Function code Function code name Parameter description Unit Default setting Attribute F13 00 Speed torque control options 0 Speed contr...

Страница 246: ...uency pulse input X5 The torque depends on HDI percentage F13 02 For the details of AI1 AI2 and X5 refer to the F00 04 description They have the same meaning 100 00 is the percentage to the set value...

Страница 247: ...d and Multi segment Torque Terminal 18 multi segment torque terminal 2 17 multi segment torque terminal 1 Number of Segments Torque setting Invalid Invalid Multi segment torque 1 Depending on the F13...

Страница 248: ...AI2 refer to the F00 04 description They have the same meaning 100 00 is the percentage to the set value of F13 09 upper frequency limit of torque control F13 08 5 High frequency pulse input X5 The up...

Страница 249: ...motor and even the motor is drive to run reversely the maximum operating load frequency of the motor is still restricted in the case of F13 19 1 and not restricted in the case of F13 19 0 The upper fr...

Страница 250: ...he compensation value the stronger the compensation force will be The compensation percentage is equal to the torque setting percentage 7 15 Parameter Group of Motor 2 of F14 group The two motors of t...

Страница 251: ...ase in ASR_T may accelerate the dynamic response of the speed loop If ASR_P is too large or ASR_T is too small however the system may be over tuned to cause oscillation In case of any change in F14 52...

Страница 252: ...of the motor 2 is fixed as the acceleration deceleration time 1 2 3 4 corresponding to the function codes F00 14 F00 15 F15 03 F15 04 F15 05 F15 06 F15 07 and F15 08 respectively Function code Functio...

Страница 253: ...on code Function code name Parameter description Unit Default setting Attribute F14 87 Stop mode of motor 2 0 Slow down to stop 1 Free stop 0 See F04 19 7 16 Auxiliary Function Parameter Group of F15...

Страница 254: ...g Running The separate set frequency and acceleration deceleration time are applied in jog running and not shared in normal running but with the same physical meanings The triggering conditions of the...

Страница 255: ...3 1 0 65000 F15 13 2 s 15 00 F15 09 Fundamental frequency of acceleration and deceleration time 0 maximum frequency F00 16 1 50 00Hz 2 set frequency 0 The system has four groups F00 14 and F00 15 in t...

Страница 256: ...crease from 0 00Hz 100 00Hz to 100 00Hz 0 00Hz If F15 09 2 the reference frequency depends on the function code F18 01 set frequency Assuming F18 01 100 00Hz the acceleration deceleration time is expr...

Страница 257: ...conditions the acceleration and deceleration time requirements may vary greatly The system provides three acceleration and deceleration time units depending on the function code F15 13 F15 13 1 means...

Страница 258: ...of frequency hopping point hopping range The specific frequency hopping range is frequency hopping point hopping range frequency hopping point hopping range At most three frequency hopping areas can b...

Страница 259: ...utput frequency and given frequency is less than or equal to the set value of FAR detection width F15 20 during inverter operation the corresponding function terminal will output the active level Othe...

Страница 260: ...vel if the output frequency drops to less than the result of output frequency detection FDT1 2 F15 21 F15 23 FDT1 2 hysteresis F15 22 F15 24 the corresponding function terminal will output the inactiv...

Страница 261: ...00 The analog level detection function is used to detect and monitor the analog input of the current selected F15 25 channel and also perform internal operation and external alarm monitoring Two detec...

Страница 262: ...ry to select the appropriate braking resistor and braking unit as detailed in 10 1Braking Resistor and 10 2Braking unit Time t Bus voltage 0 Energy consumption braking voltage F15 30 Time t Energy con...

Страница 263: ...tart running 1 running at startup When the inverter starts running the fan will start running When this parameter is set to 1 min the fan will stop running 2 intelligent operation subject to temperatu...

Страница 264: ...ion code name Parameter description Unit Default setting Attribute F15 38 Options of dead zone compensation mode 0 no compensation 1 compensation mode 1 2 compensation mode 2 1 This parameter does not...

Страница 265: ...the function 73 output overcurrent of the output terminal will be valid Function code Function code name Parameter description Unit Default setting Attribute F15 68 Market price 0 00 100 00 1 00 Set...

Страница 266: ...d control product for winding and unwinding F16 00 4 Fan application The inverter can be used to configure the parameters of the corresponding function code for the fan application macro F16 00 5 Mach...

Страница 267: ...nd Users can also view the real time length count via F18 34 The length resolution can be set by F16 13 In case of any change in the length resolution F16 01 will change accordingly For example if F16...

Страница 268: ...ar input Count value 2 1 3 4 5 6 7 8 9 9 0 0 Valid Invalid Valid Invalid Invalid Fig 7 15 Example of Fixed length Counting Fig 7 15 shows an example where F16 01 2 and F16 02 4 0 When the length count...

Страница 269: ...he DO terminal counting is continued and the value is compared with the set count 2 n If 2 n n it means that the value does not reach the set count Otherwise it means that the value reaches the set co...

Страница 270: ...e inverter has been run for the set time Users can view the remaining time of regular running by F18 35 or clear the current running time by the input function 27 clear regular running time i e resett...

Страница 271: ...tion Unit Default setting Attribute F16 09 Factory password 0 65535 XXXXX Factory password After this password is set the inverter may fail to work normally Be careful to set this password Function co...

Страница 272: ...ions 0 F17 03 VX4 virtual input function options 0 F17 04 VX5 virtual input function options 0 F17 05 VX6 virtual input function options 0 F17 06 VX7 virtual input function options 0 F17 07 VX8 virtua...

Страница 273: ...of the virtual output terminal so this should be used in conjunction with the virtual output terminal If F17 19 16 reach the length and F17 28 xxxx xxx1 the VY1 status depends on the output function...

Страница 274: ...put Terminals 0 F17 20 VY2 virtual output function options 0 F17 21 VY3 virtual output function options 0 F17 22 VY4 virtual output function options 0 F17 23 VY5 virtual output function options 0 F17...

Страница 275: ...tus of X1 The status of the virtual output terminal VY1 is synchronized with that of the actual input terminal X1 This can be applied in programming of multiple functions such as status confirmation o...

Страница 276: ...Reserved F18 03 Estimate feedback frequency Display the estimated feedback frequency in the SVC control mode Scope 0 00 to upper frequency limit This parameter will be updated promptly in the SVC con...

Страница 277: ...ing segment example the time of the first segment is dependent on F08 20 s min F18 13 Reserved F18 14 Load rate Display the current load speed For the correct display please set the load speed display...

Страница 278: ...status of the output terminals R1 Y1 The five bit digital tubes from left to right are R1 Y1 0 1 0 1 0 1 0 1 0 1 The actual display effect is 000 0 means that the current function terminal is invalid...

Страница 279: ...h F18 68 Cumulative energy saving KWH 0 0 999 9 kWh F18 69 High cumulative cost saving 1000 0 65535 F18 70 Low cumulative cost saving 0 0 999 9 F18 71 Power frequency power consumption MWH 0 65535 MWh...

Страница 280: ...ous protection as detailed in Table 7 24 List of Protection Types 0 F19 07 Output frequency in protection Display the output frequency of the previous protection Hz 0 00 F19 08 Output current in prote...

Страница 281: ...n E01 E02 instantaneous overcurrent E02 E03 reserved E03 E04 steady state overcurrent E04 E05 steady state overvoltage E05 E06 Steady state undervoltage E06 E07 input phase loss E07 E08 output phase l...

Страница 282: ...n Unit Default setting Attribute F27 00 Application macro 0 Winding mode 1 Unwinding mode 2 Wire drawing mode 3 Straight wire drawing machine mode 0 F27 00 0 Winding mode This mode can be used for win...

Страница 283: ...nal control 1 Terminal control 1 Terminal control F00 03 Terminal control mode 0 terminal RUN 0 terminal RUN 0 terminal RUN 0 terminal RUN F00 04 Main frequency A 1 AI1 setting 0 Digital setting 1 AI1...

Страница 284: ...dforward 89 Reset feedforward 19 acceleratio n and deceleratio n time terminal 1 2 FR reverse F02 02 X3 terminal 121 External material cutoff signal 121 External material cutoff signal 10 Reset protec...

Страница 285: ...jog without output F04 19 Stop mode 1 free stop 1 free stop 0 slow down to stop 1 free stop F04 20 Starting frequency of DC braking in stop 2 50Hz F04 22 DC braking time in stop 3 00s 3 00s 3 00s F04...

Страница 286: ...time 8 00s F15 03 Acceleration time 2 70 00s F15 04 Deceleration time 2 5 00s F15 21 FDT1 setting 1 00Hz 1 00Hz 2 00Hz 1 00Hz F15 22 FDT1 hysteresis 1 50Hz 1 50Hz 1 00Hz 1 50Hz F15 23 FDT2 1 00Hz 1 00...

Страница 287: ...000s 4 000s F09 10 Differential 2 30 000ms 30 000ms 50 000ms F09 11 Parameter switching mode 2 automatic switching according to deviation 3 Automatic switching by frequency 2 automatic switching acco...

Страница 288: ...and other settings F27 01 Feedforward channel 1 Feedforwar d main A 2 Feedforward 10V 1 Feedforward main A F27 02 Feedforward range 1 0 00 to upper limit 2 upper limit to upper limit 0 No change in fe...

Страница 289: ...increment 3 0 75 s 1 30 s F27 17 Feedforward increment 4 1 55 s 2 75 s F27 18 Feedforward increment 5 4 00 s 7 40 s F27 19 Feedforward increment 6 11 00 s 20 50 s F27 20 Material cutoff control 1201 1...

Страница 290: ...Series Inverter 290 Note 1 The output terminal function is not set to 67 by default brake control function For brake control of the inverter set the related terminal function and check whether F27 25...

Страница 291: ...EM730 EM730E Series Inverter 291 2 The unwinding function is similar to the straight wire drawing machine Refer to the wiring diagram of winding and list of parameter macros for wiring Electrical conn...

Страница 292: ...mode 0 No change in feedforward gain 1 0 00 to upper limit of feedforward gain 2 upper limit of feedforward gain to upper limit of feedforward gain 1 F27 02 0 Unchanged feedforward gain The feedforwar...

Страница 293: ...Set the hundreds place of F27 03 to 0 not calculate only for the straight wire drawing machine No calculation When the DI input function 26 frequency source switching of the external terminal is enabl...

Страница 294: ...100 00 72 00 F27 13 Soft start increment 0 00 50 00 s 0 60 F27 14 Feedforward increment 1 0 00 50 00 s 0 11 F27 15 Feedforward increment 2 0 00 50 00 s 0 30 F27 16 Feedforward increment 3 0 00 50 00 s...

Страница 295: ...limit by F27 24 Ones place of F27 20 0 automatic detection Wire disconnection is detected automatically by the inverter In this mode F09 35 and F09 36 must be set accurately Ones place of F27 20 1 ext...

Страница 296: ...ection terminal for the straight wire drawing machine only This is the same as the option 4 The terminal of material cutoff detection output is invalid only when the swing rod returns to the normal ra...

Страница 297: ...cription Unit Default setting Attribute F27 25 Brake signal output frequency 0 00 Fup Hz 2 50 F27 26 Braking signal duration 0 0 100 0 s 5 0 F27 25 and F27 26 are not valid until one output terminal i...

Страница 298: ...ms 5 The set time of this function is the filtering time of material cutoff detection It is valid simultaneously for automatic material cutoff detection and external material cutoff detection Function...

Страница 299: ...le when the motor load cannot be removed but the motor parameters are available The rotary self identification is suitable when the motor load can be removed The motor shaft needs to be disconnected f...

Страница 300: ...ed speed of the motor F01 06 winding connection of the motor and F01 07 rated power factor of the motor respectively For the asynchronous motor Set F01 34 1 and press The inverter will start the stati...

Страница 301: ...he acceleration and deceleration time is too short 5 The inverter module is damaged 6 There is excessive on site interference 1 Check the wiring for short circuits 2 Properly increase the acceleration...

Страница 302: ...power supply are aging 1 Check the input power supply and wiring 2 Tighten the screws of input terminals 3 Check the air circuit breaker and contactor E07 Input phase loss 1 The input power supply is...

Страница 303: ...d and written repeatedly causing damage to the memory 1 Press the STOP RESET key to reset the controller and try again 2 For the parameters e g frequency setting to be modified frequently set F10 56 t...

Страница 304: ...oad 5 The motor fails 1 Press the STOP RESET key to reset 2 The external terminal should not be operated during parameter identification 3 Check the connection between the inverter and motor 4 Disconn...

Страница 305: ...resaid protection press the STOP RESET key to reset clear protection or use the protection resetting terminal to exit the protection status If the protection has been eliminated the inverter will retu...

Страница 306: ...stricted Please set F12 02 to 0 Or this occurs after the user password is set 9 2 2 Abnormality of motor rotation When the RUN key on the keyboard is pressed the motor does not rotate Terminal control...

Страница 307: ...n time of the motor longer than the set time Check whether the set current limit of the inverter is too low The set acceleration time is too long Please check the acceleration time code 9 2 4 Too long...

Страница 308: ...ivity above 30 mA If an ordinary leakage circuit breaker is used use a leakage circuit breaker with the current sensitivity above 200 mA and action time of more than 0 1 s 9 2 7 mechanical vibration T...

Страница 309: ...set value of the DC braking time for stop F04 22 Under normal circumstances please give priority to increase in the DC braking current for stop 9 2 9 Inconsistency between output frequency and set fr...

Страница 310: ...it on preferably 30 min once every six months during storage to prevent the failure of electronic components The inverter should not be used in the humid place or place with metal dust If necessary u...

Страница 311: ...in the above table are as follows Ambient temperature Annual average 30 Load factor Less than 80 Operating time less than 12 hours per day 9 4 Instructions for Inverter Warranty Our company will prov...

Страница 312: ...ths Certain maintenance fees will also be charged within one year in the following cases The inverter is damaged due to noncompliance with the instructions in this manual during operation The inverter...

Страница 313: ...eded to release energy in a timely manner Due to the external braking resistor of energy consumption braking type the energy will be completely dissipated to the power braking resistor Hence the power...

Страница 314: ...1 5 180 400 1 5 EM730 EM730E 2R2 2B 2 2 90 800 2 5 EM730 EM730E 0R7 3B 0 75 360 200 1 EM730 EM730E 1R5 3B 1 5 180 400 1 5 EM730 EM730E 2R2 3B 2 2 180 400 1 5 EM730 EM730E 4R0 3B 4 90 800 2 5 EM730 EM7...

Страница 315: ...4 29 for the wiring specifications of the main circuit Use the cables with the conforming insulation levels and cross sections Table 4 29 Wire Specifications of Braking Units and Braking Resistors Sp...

Страница 316: ...s EM730 WIFI The inverter can be controlled by the mobile phone APP PC background software and the like for quick parameter setting parameter copying and status monitoring of the inverter Installation...

Страница 317: ...rk address 1 247 0 is the broadcast address Default data format of RS 485 terminal 1 8 N 1 2 options 1 8 E 1 1 8 O 1 1 8 N 2 1 8 E 2 and 1 8 O 2 Default baud rate of RS 485 terminal 9600bps options 48...

Страница 318: ...he function code and data part mainly including the register address number of registers register content and the like the detailed definitions of function codes are different as shown in 11 3 3Functi...

Страница 319: ...mal data from normal communication data Corresponding to the normal request function code the abnormality function code request function code 0x80 Table 12 30 Function Code Definitions of EM730 EM730E...

Страница 320: ...registers Error PDU Error code 1 byte 0x83 Exception code 1 byte 01 02 03 or 04 Below is an example of a request to read the registers F19 00 to F19 05 relevant information about the last protection R...

Страница 321: ...ion codes across groups However it is recommended not to read them across groups in the case of no special requirements so the customer s software does not need to be upgraded after our products are u...

Страница 322: ...t be changed during operation That is only the parameters of the attribute it can be changed during operation can be changed Otherwise the error code 1 will be returned 1 1 1 3 0x42 function code used...

Страница 323: ...ion 42 Function 42 Function C2 Starting address Hi 00 Starting address Hi 00 Exception code 03 Starting address Lo 0E Starting address Lo 0E Number Hi of registers 00 Number Hi of registers 00 Number...

Страница 324: ...erminal unit the user program in this remote terminal unit will not be affected The user logic cannot be accessed by diagnosis such as discrete magnitude and register The error counter in the remote t...

Страница 325: ...n 08 Function 08 Function 88 Sub function code Hi 00 Sub function code Hi 00 Exception code 03 Sub function code Lo 00 Sub function code Lo 00 Data Hi A5 Data Hi A5 Data Lo 37 Data Lo 37 1 1 1 5 0x06...

Страница 326: ...ng corresponds to the standard common function code 0x06 Its definition is the same as that of the corresponding standard function code the same request response and error PDU The difference is that w...

Страница 327: ...response the function code starting address and number of registers written will be returned Request PDU Function code 1 byte 0x10 Starting Address 2 bytes 0x0000 0xFFFF Number of registers 2 bytes 1...

Страница 328: ...000H 6F63H For the function code FXX YY the high order is hexadecimal of XX and the low order is hexadecimal of YY For example the address of F00 14 is 000EH 00D 00H 14D 0EH Function code not saved af...

Страница 329: ...on setting of process PID feedback 100 00 100 00 7006H Voltage setting of VF separation mode 0 00 to 100 00 digital setting reference 7007H to 7009H Reserved 700AH Communication percentage setting of...

Страница 330: ...o 250 0 based on 100 0 or direct sending 701AH Communication setting 1 Communication setting by M1 terminal communication address option 701AH 701CH 71FF H Reserved Working status 7200H 73FFH 7200H st...

Страница 331: ...ails Bit15 10 Reserved 7202H monitoring frequency status word 1 1 0 Bit0 Output frequency Bit1 Input frequency Bit2 Synchronization frequency Bit3 Reserved Bit4 Estimate feedback frequency Bit5 Estima...

Страница 332: ...frequency 7228H Cumulative power on time 7230H Warning number 0 no warning others current warning sign Other 73FFH Reserved Product informati on 7500H 75FFH 7500H Performance software S N 1 Correspond...

Страница 333: ...ulated value with the received CRC value If the two values are not equal it means that there is an error in the sending process Calculation process of CRC check 1 Define a CRC register and assign an i...

Страница 334: ...er the calculation the content of the CRC register is the value of CRC check 9 In a system with limited time resources it is recommended to perform CRC check by the table lookup method The simple func...

Страница 335: ...00 0xC1 0x81 0x40 0x01 0xC0 0x80 0x41 0x00 0xC1 0x81 0x40 0x01 0xC0 0x80 0x41 0x01 0xC0 0x80 0x41 0x00 0xC1 0x81 0x40 0x00 0xC1 0x81 0x40 0x01 0xC0 0x80 0x41 0x01 0xC0 0x80 0x41 0x00 0xC1 0x81 0x40 0x...

Страница 336: ...0x8B 0x8A 0x4A 0x4E 0x8E 0x8F 0x4F 0x8D 0x4D 0x4C 0x8C 0x44 0x84 0x85 0x45 0x87 0x47 0x46 0x86 0x82 0x42 0x43 0x83 0x41 0x81 0x80 0x40 Uint16CRC Uint8 buffer Uint8 crc_len Uint8 crc_i crc_lsb crc_msb...

Страница 337: ...6 0xC1A6 0x81A7 0x4067 0x01A5 0xC065 0x8064 0x41A4 0x006C 0xC1AC 0x81AD 0x406D 0x01AF 0xC06F 0x806E 0x41AE 0x01AA 0xC06A 0x806B 0x41AB 0x0069 0xC1A9 0x81A8 0x4068 0x0078 0xC1B8 0x81B9 0x4079 0x01BB 0x...

Страница 338: ...o read the non existent register the slave station will return an exception response and the master station will be informed of the actual error The exception response message has two fields different...

Страница 339: ...ut down the inverter 08H Parameter protection by password The current register is protected by a password 11 4 Protocol Description 11 4 1 Definition of inter frame and intra frame time interval A com...

Страница 340: ...r 1 1 When an idle level of 1ms appears it indicates the end of a frame t0 Frame 1 Frame 2 Frame 3 At least 3 5 characters At least 3 5 characters 3 5 characters 4 5 characters 1 5 characters 1 5 char...

Страница 341: ...f the communication data involves EEPROM operation the time interval will be longer 7 Valid data frame Sent by the external master station not keyboard to this machine The function code length and CRC...

Страница 342: ...eck Lo 70 5 Register value Hi 00 Register value Hi 00 CRC check Hi 53 6 Register value Lo 01 Register value Lo 01 7 CRC check Lo E6 CRC check Lo E6 8 CRC check Hi C5 CRC check Hi C5 Tail 3 5 character...

Страница 343: ...alue Lo 88 Register value Lo 88 7 CRC check Lo 3B CRC check Lo 3B 8 CRC check Hi 97 CRC check Hi 97 Tail 3 5 characters idle 1 Read the information of last protection read the function codes F19 00 F1...

Страница 344: ...00 Sub function code Lo 00 CRC check Lo 47 5 Data Hi AA Data Hi AA CRC check Hi C3 6 Data Lo 55 Data Lo 55 7 CRC check Lo 5E CRC check Lo 5E 8 CRC check Hi 94 CRC check Hi 94 Tail 3 5 characters idle...

Страница 345: ...User Manual of EM730 EM730E Series Inverter 345 8 CRC check Hi D0 CRC check Hi D0 Tail 3 5 characters idle...

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