HNC HV10 Series Page 2 User Manual Download

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Content

I. Technical indicators and specifications of products................................................................................................2
II. Inverter Installation and Wiring............................................................................................................................. 4

2.1 Matters needing attention for Installation.....................................................................................................4
2.2 Outline drawing.............................................................................................................................................5

a. Overall dimensions of keypad base........................................................................................................ 5
b. Overall dimensions of the whole machine..............................................................................................6

2.3 Basic operation wiring.................................................................................................................................. 7
2.4 terminal for controlling loop.........................................................................................................................7
2.5 Matters needing attention for Wiring............................................................................................................9

III Communication protocol......................................................................................................................................10

IV. Exceptions and Handling.....................................................................................................................................15
V. Parameters instructions.........................................................................................................................................16
VI. Parameter description......................................................................................................................................... 31

Warranty agreement.................................................................................................................................................. 65

Summary of Contents for HV10 Series

Page 1: ...HV10 Series Frequency Inverter User Manual HNC Electric Limited ...

Page 2: ...ting function code 10 3 Register address 10 4 Description of parameter address of communication protocol 10 5 03H Reading function mode 12 6 06H write function mode 13 IV Exceptions and Handling 15 V Parameters instructions 16 VI Parameter description 31 00 group basic operating parameters 31 01 group auxiliary operating parameters 36 02 group analog and digital input and output parameters 42 03 g...

Page 3: ...at 5 0Hz VF control 150 rated torque at 0 5Hz Vector control Current and voltage suppression Full range current closed loop control completely avoiding current impact with perfect overcurrent and overvoltage suppression function Undervoltage suppression during operation Especially for users with low grid voltage and frequent fluctuation of grid voltage the system can maintain the longest possible ...

Page 4: ...t output voltage motor speed set frequency module temperature PID setting PID feedback analog input and output etc Alarm content Record a number of operating parameters such as output frequency set frequency output current output voltage DC voltage and module temperature during the latest fault Protection function Overcurrent overvoltage undervoltage module failure electronic thermal relay overhea...

Page 5: ...e power supply first There is danger of electric shock 7 Cut off the power supply and wait for 5 to 8 minutes for the remaining power in the machine to be basically discharged before carrying out inspection and maintenance Danger of residual voltage on electrolytic capacitor 8 Do not carry out inspection and maintenance for non professional technicians There is danger of electric shock Attention 1...

Page 6: ...5 2 2 Outline drawing a Overall dimensions of keypad base Right side Side face Back side Opening size of keypad base keypad thickness W W1 H H1 H2 D D1 105mm 100mm 83mm 59 5mm 59 5mm 19 54mm 14 64mm ...

Page 7: ...llation dimension mm Weight kg W H1 D W1 H2 Mounting hole d 1PH 220V HV10 R40G1 2 60 160 134 78 170 4 0 9 HV10 R75G1 2 HV10 1R5G1 2 HV10 2R2G1 2 3PH 220V HV10 R40G2 HV10 R75G2 HV10 1R5G2 HV10 2G2G2 3PH 380V HV10 R40G3 HV10 R75G3 HV10 1R5G3 HV10 2R2G3 HV10 004G3 78 200 152 95 212 4 1 3 HV10 5R5G3 ...

Page 8: ... main circuit and the control circuit The user can open the cover of the output input terminal and the main circuit terminal and the control circuit terminal can be seen at this time The user must connect correctly according to the wiring circuit shown below 2 4 terminal for controlling loop ...

Page 9: ...ay output TA It can be defined as a multi function relay output terminal TA TC is NO Contact rating 250VAC 2A COSФ 1 30VDC 1A TC OC output Y It can be defined as a multifunctional collector output terminal which can be used as a high speed pulse output 1 Switching capacity 50mA 30V 2 Output frequency range 0 50kHz Power supply 24V The common power supply for the circuit of the digital signal input...

Page 10: ...and the motor should be within 50 meters When the carrier frequency is greater than 4KHz this distance should be appropriately reduced This connection is best laid in a metal pipe 8 When the inverter is equipped with peripheral equipment filter reactor etc the insulation resistance to the ground should be measured with a 1000 volt megohmmeter to ensure that it is not lower than 4 megohms 9 Phase i...

Page 11: ...ty check Start 1 2 3 4 5 6 7 8 Par Stop No parity check Start 1 2 3 4 5 6 7 8 Stop 2 Description of reading and writing function code Function code Functional Description 03 Read register 06 Write register 3 Register address 2 Register Map Address Control command input 2000H Monitoring parameter reading D 00 D 30 1000H 001EH Communication Frequency setting 2001H User parameter setting 00 00 08 06 ...

Page 12: ... places R 210CH Reserved R 210DH Inverter temperature one decimal place R 210EH PID feedback value two decimal places R 210FH PID set value two decimal places R 2110H Reserved R 2111H Pulse frequency input R 2112H Current fault R 2113H Current timing value R 2114H Input terminal status R 2115H Output terminal status R 2116H BIT0 Run Stop BIT1 Forward reverse rotation BIT2 JOG BIT3 DC braking BIT4 ...

Page 13: ... Inverter overload 05 Motor overload 06 External fault 07 09 Reserved 10 Overcurrent during acceleration 11 Overcurrent during deceleration 12 Overcurrent in constant speed 13 Reserved 14 Undervoltage 15 Reserved 16 RS485 communication failure 17 Tube burst fault 18 Reserved 19 Dual CPU communication failure 20 Reserved 21 Reserved 22 Current detection fault 23 Reserved 24 Reserved 25 Output out o...

Page 14: ...f this data 01H is the inverter address 03H is the read function code 04H is the product of reading item 2 1770H reads the data of 2102H set frequency 0000H is the data of reading 2103H output frequency 5CFEH is a 16 bit CRC check code 6 06H write function mode Inquiry information frame format Address 01H Function 06H Starting data address 20H 00H Data 2Byte 00H 01H CRC CHK Low 43H CRC CHK High CA...

Page 15: ...ation frame format return frame Address 01H Function 06H Starting data address 20H 00H Number of Data Byte 00H 01H CRC CHK Low 43H CRC CHK High CAH Analysis of this data If the settings are correct return the same input data ...

Page 16: ...leration to increase deceleration time Improper setting of carrier frequency overload or oscillation Overload and insufficient torque Increase torque boost value in V F mode If it still cant meet the requirements you can switch to vector control mode At this time pay attention to the fact that the motor parameters should be consistent with the actual values If it still cant meet the requirements i...

Page 17: ...tion 0 Keypad potentiometer 1 Digital given 1 adjust with and keys on the operation panel 2 Digital setting 2 adjust with terminal UP DOWN 3 AI analog setting 0 10V 0 20mA 4 Combination setting 5 Reserved 6 Communication 7 Reserved Note When combination given time is selected the combination given mode is selected in 01 15 0 7 0 00 04 Max output frequency The maximum output frequency is the highes...

Page 18: ... setting is a percentage relative to the rated voltage of the motor 0 0 30 0 Model setting 00 15 Torque boost cutoff frequency This setting is the lifting cut off frequency point when manual torque is lifted 0 0 50 0Hz 15 0Hz 00 16 Carrier frequency setting When silent operation is needed the carrier frequency can be appropriately increased to meet the requirements but increasing the carrier frequ...

Page 19: ... hundred bits Reserved LED thousand bits Reserved 0000 0012 00 01 01 Starting frequency 0 0 50 0Hz 1 0Hz 01 02 Starting DC braking Voltage 0 0 50 0 rated Voltage of motor 0 0 01 03 Starting DC braking time 0 0 30 0s 0 0s 01 04 Stop mode 0 Deceleration stop 1 Free stop 0 1 0 01 05 Start frequency of DC braking during stop 0 0 upper limit frequency 0 0Hz 01 06 Stop DC braking Voltage 0 0 50 0 rated ...

Page 20: ...ed 3 frequency upper limit frequency upper limit frequency 15 0Hz 01 20 Multi speed frequency 4 Set the segment speed 4 frequency upper limit frequency upper limit frequency 20 0Hz 01 21 Multi speed frequency 5 Set the segment speed 5 frequency upper limit frequency upper limit frequency 25 0Hz 01 22 Multi speed frequency 6 Set the segment speed 6 frequency upper limit frequency upper limit freque...

Page 21: ...rse operation to the forward 0 0 999 9s 0 0 Group 02 analog and digital input and output parameters Function code Name Setting range Minimum unit Factory setting Change 02 00 AI input lower limit Voltage Set AI upper and lower limit voltage 0 00 02 01 0 00V 02 01 AI input upper limit Voltage 02 01 10 00V 10 00V 02 02 AI lower limit corresponding setting Set AI upper and lower limits corresponding ...

Page 22: ... wire control mode 1 1 Two wire control mode 2 2 Three wire control mode 1 3 Three wire control mode 2 4 Three wire control mode 3 5 Reserved 0 5 0 02 19 Selection of terminal function detection when power on 0 invalid terminal operation command at power on 1 valid terminal operation command at power on 0 1 0 02 20 R output setting 0 Reserved 1 Inverter is ready to run 2 Inverter in running 3 Inve...

Page 23: ...ics 0 invalid 1 positive effect When the feedback signal is greater than the given quantity of PID the output frequency of the inverter is required to decrease that is reduce the feedback signal 2 negative effect When the feedback signal is greater than the given quantity of PID the output frequency of the inverter is required to rise that is reduce the feedback signal LED ten bits PID given input...

Page 24: ...ter the delay waiting time defined in 03 13 The value is a percentage of the PID set value 0 0 150 0 90 0 03 12 Sleep delay time Set up Sleep delay time 0 0 999 9s 100 0s 03 13 Wake delay time Set up Wake delay time 0 0 999 9s 1 0s 03 14 Deviation between feedback and set pressure when entering sleep This function parameter is only valid for disturbance sleep mode 0 0 10 0 0 5 03 15 Delay time of ...

Page 25: ...mpensation mode 0 invalid 1 low frequency compensation Note This parameter is only valid for advanced V F 0 1 0 04 16 Self learning of motor parameters 0 invalid 1 Static self learning STAR is displayed immediately when it is started After finished END is displayed and disappears after 1s 0 1 0 04 17 Motor rated Power After the rated power of the motor is changed to 04 17 04 01 04 02 04 04 04 05 0...

Page 26: ...vel defines the current threshold of automatic current limiting operation and its set value is the percentage relative to the rated current of the inverter 50 200 160 05 08 Feedback disconnection detection value This value is the percentage of PID given quantity When the feedback value of PID is continuously less than the feedback disconnection detection value the inverter will make corresponding ...

Page 27: ...e 0 normal response 1 Only respond to the slave address 2 no response 3 The slave machine does not respond to the free stop instruction of the host machine in broadcast mode LED thousand bits Reserved 0000 0322 0000 06 02 communication timeout check out time If the machine does not receive the correct data signal within the time interval defined by this function code then the machine thinks that t...

Page 28: ... after the frequency reaches the lower limit frequency of the swing frequency This value is a percentage relative to the swing frequency amplitude 07 11 If it is set to 0 0 there will be no sudden jump frequency 0 0 50 0 0 0 07 13 Swing frequency rise time Running time from the lower frequency of the swing frequency to the upper frequency of the swing frequency 0 1 3600 0s 5 0 07 14 Pendulum frequ...

Page 29: ... 999 9Hz 0 1Hz 0 0Hz d 01 Set frequency Hz 0 0 999 9Hz 0 1Hz 0 0Hz d 02 Output voltage V 0 999V 1V 0V d 03 DC Bus voltage V 0 999V 1V 0V d 04 Output current A 0 0 999 9A 0 1A 0 0A d 05 Motor speed rpm 0 60000rpm 1rpm Model setting d 06 Analog input AI1 V mA 0 00 10 00V 0 00 20 00mA 0 01V 0 01mA 0 00V mA d 07 Reserved 0 0 d 08 Analog input AO V mA 0 00 10 00V 0 00 20 00mA 0 01V 0 01mA 0 00V mA d 09...

Page 30: ...ime is too short Extended the acceleration time 1 Low inverter power Choose a frequency inverter with high power level Improper setting of V F curve or torque boost Adjust V F curve or torque lift E0C2 Overcurrent in deceleration Deceleration time is too short Extended deceleration time 2 Low inverter power Choose a frequency inverter with high power level E0C3 Overcurrent in uniform operation Low...

Page 31: ...t terminal closed Disconnect External Equipment Fault Input Terminal and Clear Fault 13 EPOF Dual CPU communication failure CPU communication failure Seek services from manufacturers 14 EPID PID feedback disconnection Loose PID feedback circuit Check the feedback connection 15 The feedback amount is less than the disconnection detection value Adjust the detection input threshold E485 RS485 communi...

Page 32: ...ments for starting torque such as wire drawing machines ball mills etc 2 Vector control sensitivity of motor parameters A true vector control method In addition to the high torque output performance of the magnetic flux control method this control method also has the effect of flexible torque output It can be described as both rigid and flexible but this control method is more sensitive to motor p...

Page 33: ... settings see the definition of function 02 00 02 03 4 Combination given When the combination is given the combination setting mode is selected in 01 15 5 reserved 6 Communication settings Change the set frequency through the serial port frequency setting command For details see Group 06 communication parameters 7 Reserved 00 04 Maximum output frequency MAX 50 0 00 05 999 9Hz 50 00 00 05 Upper lim...

Page 34: ...an realize the positive and negative adjustment of the frequency Thousands of LED PID PLC frequency superposition selection 0 invalid 1 00 03 PID The main frequency given channel and PID frequency are added together as the final given frequency of the inverter 2 00 03 PLC The main frequency given channel is added to the PLC frequency as the final given frequency of the inverter 00 10 Acceleration ...

Page 35: ...e definition of 00 13 fixed curves and a custom curve can be selected 0 linear curve The linear curve is suitable for ordinary constant torque load and the output voltage has a linear relationship with the output frequency 1 Square curve The square curve is suitable for square torque loads such as fans and water pumps to achieve the best energy saving effect The output voltage and the output frequ...

Page 36: ...increase the heat generation of the inverter and at the same time increase the electromagnetic interference to the outside world When the carrier frequency exceeds the factory setting value the inverter needs to be derated for use Generally the inverter current needs to be derated by about 5 for every 1KHz increase in the download wave 00 17 V F Frequency value F1 0 00 Frequency value F2 12 5 Hz 0...

Page 37: ...he starting frequency Start according to the set starting frequency 01 01 1 DC braking starting frequency start Perform DC braking first see 01 03 and then start according to mode 0 2 reserved LED ten digits restart mode after power failure or abnormal 0 invalid When the power is turned on after a power failure the inverter will not run automatically 1 Start from the starting frequency When the po...

Page 38: ...immediately terminates the output and the load stops freely according to the mechanical inertia 01 05 Start frequency of DC braking during stop 0 0 00 05 upper limit frequency 0 00 01 06 Stop DC braking Voltage 0 0 150 0 rated Voltage of motor 0 0 01 07 Time for DC braking during stop 0 0 30 0S 0S 01 08 Waiting time for DC braking during stop 0 0 DC braking does not work 0 1 99 99s 0 0 The set val...

Page 39: ...cy of the inverter can be given by jumping near some frequency points according to the following figure Its specific meaning is that the frequency of the inverter will never run stably within the jumping frequency range but will pass through this range during acceleration and deceleration 00 15 Frequency source combination given method 0 8 0 0 Potentiometer digital frequency 1 1 Potentiometer digi...

Page 40: ...operation As shown below Fig 01 6 The schematic diagram of PLC holding after a single cycle Hundreds of LEDs start mode 0 restart from the first segment Stop during operation caused by stop command fault or power failure and start to run from the first stage after restart 1 Start from the stage at the moment of shutdown fault If the inverter stops during operation caused by a stop command fault or...

Page 41: ...owing figure Fig 01 8 PLC start mode 2 Thousands of LEDs power down storage options 0 do not store The PLC running state is not memorized when the power is off and it starts to run from the first stage after power on 1 storage The PLC running status is memorized when the power is off including the stage at the time of power down the running frequency and the running time Restart after power on it ...

Page 42: ...Stage 4 running time the unit is selected by 01 35 and the default is seconds 0 0 999 9 S 10 0 01 28 Stage 5 running time the unit is selected by 01 35 and the default is seconds 0 0 999 9 S 10 0 01 29 Stage 6 running time the unit is selected by 01 35 and the default is seconds 0 0 999 9 S 10 0 01 30 Stage 7 running time the unit is selected by 01 35 and the default is seconds 0 0 999 9 S 10 0 Th...

Page 43: ...ration time terminal function in 02 13 02 17 01 35 Time unit selection 000 211 000 LED bit process PID time unit LED ten bits simple PLC time unit LED hundred bits regular acceleration and deceleration time unit LED thousand bits reserved 0 1 second 1 1 minute 2 0 1 second This function code defines the dimension of acceleration and deceleration time 01 36 Forward and reverse dead time 0 0 999 9s ...

Page 44: ...stable and the response delay 02 09 Analog input anti shake deviation limit 0 00V 10 00V 0 10 When the analog input signal fluctuates frequently near the given value you can set 02 09 to suppress the frequency fluctuation caused by this fluctuation 02 10 AO multifunctional analog output terminal function selection 0 5 0 The above function codes determine the corresponding relationship between the ...

Page 45: ... circuited with GND and the stop is decelerated by the deceleration time 00 11 8 External reset signal input RST When a fault occurs in the inverter the fault can be reset through this terminal Its function is the same as that of the key S T O P R E S E T This function is valid under any command channel 9 External equipment failure normally open input Through this terminal the fault signal of the ...

Page 46: ...e counter increases by 1 if the counting mode is down counting then decreases by 1 and the maximum frequency of the count pulse is 200 Hz 25 Timer clear signal The terminal is short circuited with GND to clear the internal timer and use it in conjunction with function No 26 26 Timer trigger signal The trigger port of the internal timer 27 Acceleration and deceleration time selection By selecting t...

Page 47: ...EV Xx Stop command Xm Xn Xx represent any 3 terminals of DI1 DI5 defined as FWD REV and three wire operation control functions respectively Before K3 is connected the connected K1 and K2 are invalid When K3 is connected K1 is triggered the inverter rotates forward K2 is triggered the inverter reverses K3 is disconnected the inverter stops Figure 2 3 Schematic diagram of three wire control mode 1 3...

Page 48: ...inverter is in forward and reverse running state the output indicator signal 3 The inverter is running at zero speed The output frequency of the inverter is 0 00Hz but it is the indication signal output when it is still in the running state 4 External fault shutdown When the inverter has an external fault the output indicator signal 5 Inverter failure When the inverter has a fault the output indic...

Page 49: ...tput frequency drops to the speed detection level When the output frequency of the inverter drops to the level of speed detection 02 25 an indication signal is output 02 22 R close delay 0 0 255 0s 0 0 02 23 R open delay 0 0 255 0s 0 0 This function code defines the delay from the change of the state of the relay to the change of the output 02 24 Frequency reaches FAR detection amplitude 0 0Hz 15 ...

Page 50: ...is connected to GND and GND is valid and the disconnection is invalid 1 It means anti logic that is DI terminal is not connected to the GND terminal and GND is invalid and the disconnection is valid Note DI1 DI5 correspond to 1H 2H 4H 8H and 10H in hexadecimal 02 30 DI1 filter coefficient 0 9999 5 02 31 DI2 filter coefficient 0 9999 5 02 32 DI3 filter coefficient 0 9999 5 02 33 DI4 filter coeffici...

Page 51: ...ignal For example the range of the pressure gauge is 0 10MPa corresponding to 0 10V voltage output We need a pressure of 6MPa then the given digital quantity can be set to 6 00V so that when the PID adjustment is stable the required pressure is 6MPa 03 02 Feedback channel gain 0 01 10 00 1 00 When the feedback channel is inconsistent with the set channel level this function can be used to adjust t...

Page 52: ...rference of the system especially the interference from large changing frequency 03 06 Sampling period T 0 1 10 0s 0 0 The larger the sampling period the slower the response but the better the interference signal suppression effect so it is generally unnecessary to set it 03 07 Deviation limit 0 1 20 0 0 0 The deviation limit is the ratio of the absolute value of the deviation between the system f...

Page 53: ...he sleep state to the working state When the PID polarity is selected as the positive characteristic if the actual feedback value is less than the set value or when the PID polarity is selected as the negative characteristic if the actual feedback value is greater than the set value the inverter passes the defined value of 03 13 After delaying the waiting time it leaves the sleep state and starts ...

Page 54: ...PM Model setting 04 03 Motor rated frequency 1 0 999 9Hz Model setting The above function codes must be set according to the motor nameplate parameters Please configure the corresponding motor according to the power of the inverter If the power difference is too large the control performance of the inverter will be significantly reduced 04 04 Motor stator resistance 0 001 20 000Ω Model setting 04 ...

Page 55: ... this time the voltage energy raised inside the frequency inverter will be released through the braking resistor and the DC voltage will fall down 04 12 Over modulation function selection 0 1 0 0 invalid 1 valid The over modulation function means that the inverter increases the output voltage by adjusting the utilization rate of the bus voltage When the over modulation is effective the output harm...

Page 56: ...w frequency switching point 0 0 10 0Hz 5 0 04 24 Speed loop 2 Proportional gain 1 100 20 04 25 Speed loop 2 Integral time 0 01 10 00S 1 00 04 26 High frequency switching point 04 23 320 0Hz 10 0 In vector control mode the speed response characteristics of vector control are changed by setting the proportional gain p and integration time i of the speed regulator The composition of the speed regulat...

Page 57: ...Oscillation Suppression 0 invalid 1 valid When the oscillation suppression is effective the PWM mode is forced to five stage 05 01 Motor overload protection coefficient 30 110 100 In order to implement effective overload protection for different types of load motors it is necessary to reasonably set the overload protection coefficient of the motor and limit the maximum current value that the inver...

Page 58: ...current of the inverter thereby reducing the reliability of the inverter s operation Therefore when running for a long time under low grid voltage the inverter power needs to be derated for use 05 03 Voltage limiting factor during deceleration 0 0FF 1 255 1 This parameter is used to adjust the ability of the inverter to suppress overvoltage during deceleration 05 04 Overvoltage limit level 220V 35...

Page 59: ...action after feedback disconnection Figure 05 3 Timing diagram of closed loop feedback loss detection 05 10 Inverter Overload pre alarm level 0 150 120 The overload pre alarm mainly monitors the overload condition of the inverter before the overload protection is activated The overload pre alarm level defines the current threshold of the overload pre alarm action and its set value is the percentag...

Page 60: ...ten bits In deceleration 0 invalid 1 valid LED hundred bits In constant speed 0 invalid 1 valid LED Thousand bits Reserved 05 18 Output phase lost protection detection coefficient 0 00 20 00 2 00 When the ratio of the maximum value to the minimum value in the three phase output current is greater than this coefficient and the duration exceeds 6 seconds the frequency inverter reports the output cur...

Page 61: ...ot receive the correct data signal within the time interval defined by this function code then the machine thinks that the communication has failed and the frequency inverter will decide whether to protect or maintain the current operation according to the setting of the communication failure action mode When this value is set to 0 0 RS485 communication timeout detection is not performed 06 03 loc...

Page 62: ...e and detection value of the counter When the count value of the counter reaches the value set by the function code 07 01 the corresponding multi function output terminal counter reset signal output outputs an effective signal and the counter is cleared When the count value of the counter reaches the value set by the function code 07 02 an effective signal is output at the corresponding multi func...

Page 63: ...equency 07 11 If 07 09 1 then the swing AW given channel frequency 07 11 07 12 Jump frequency 0 0 50 0 0 0 This function code refers to the amplitude of the rapid decrease when the frequency reaches the upper limit frequency of the traverse frequency during the swing frequency process Of course it also refers to the amplitude of the rapid increase after the frequency reaches the lower limit freque...

Page 64: ... swing frequency fall time 07 14 Circulate running until there is a stop command to decelerate and stop according to the deceleration time Figure 07 2 Schematic diagram of swing frequency Group 08 manage and display parameters 08 00 Main parameter monitoring during operation 0 30 0 For example 08 00 2 that is select the output voltage D 02 then the default display item on the main monitoring inter...

Page 65: ...he current working state of the inverter 1 Restore the factory settings All user parameters are restored to the factory settings according to the model 2 Clear fault record Clear the contents of fault records d 19 d 24 After the operation is completed this function code is cleared to 0 automatically 08 06 FUNC key settings 0 3 0 0 JOG 1 FWD and REV switch 2 Clear key frequency setting 3 REV at thi...

Page 66: ...sasters and secondary disasters C hardware damage caused by man made falling and transportation after purchase D machine damage caused by not operating in accordance with the user s manual provided by our company E failures and damages caused by obstacles other than machines e g external equipment factors 3 In case of product failure or damage please fill in the contents of Product Warranty Card c...

Page 67: ...dition V5 0 Thanks for choosing HNC product Any technique support please feel free to contact our support team Tel 86 20 84898493 Fax 86 20 61082610 URL www hncelectric com Email support hncelectric com ...

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