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7 Communication Protocol 

(The following data are all hexadecimal) 

1

RTU mode and format

 

When  the  controller  communicates  on  the  Modbus  bus  in  RTU  mode,  each  8-bit  byte  in  the 

information is divided into two 4-bit hexadecimal characters. The main advantage of this mode is 

that the density of characters transmitted is higher than that of ASCII mode at the same baud rate, 

each message must be transmitted continuously. 

1

The format of each byte in RTU mode

 

Coding system: 8-bit binary, hex 0-9, A-F. 

Data bits: 1 start bit, 8 bits of data (lowest bit sent first), 1 stop bit, parity bit can be selected. 

(Refer to RTU data frame bit sequence diagram) 

Error check area: cyclic redundancy check (CRC). 

2

RTU data frame bit sequence diagram

 

With Parity check 

Start 

Par 

Stop 

 

Without Parity check 

Start 

Stop 

 

 

2

Reading and writing function code description

 

Function code 

Function description 

03 

Read register 

06 

Write register 

 

3

Parameter address description of communication protocol

 

Function Description 

Address 

definition 

Explanation of data   

R/W 

Communication control 

commands 

2000H 

0001H

Downtime 

0012H

Forward run 

0013H

Jog forward 

0022H

Reverse run 

0023H

Jog    reverse   

Communication frequency 

setting address 

2001H 

The communication frequency setting 

range is -10000 

  10000. 

Note: The communication frequency 

setting is a percentage relative to the 

maximum frequency, and its range is 

-100.00% 

  100.00%). 

Communication control 

commands 

2002H 

0001H

External fault input 

0002H

Fault reset 

Summary of Contents for SY2000 Series

Page 1: ...1 SY2000 Series Frequency Inverter UserManual Sanyu control and protect your motors Shanghai Sanyu Industry Co Ltd ...

Page 2: ...and product models 3 Model table 5 2 Installation and wiring 6 3 Operation panel introduction 9 4 Peripheral equipment selection 10 5 Parameter monitor and fault record 11 6 Parameter summary and instructions 14 7 Communication protocol 32 8 Regular inspection and maintenance 35 ...

Page 3: ...rictly forbidden to operate with wet hands during wiring operation and professional electrical engineering personnel are required 3 The main circuit terminal and the cable must be firmly connected otherwise the inverter may be damaged due to poor contact 4 For safety reasons the ground terminal of the inverter must be reliably grounded 5 It is strictly forbidden to connect the AC 220V or 380V powe...

Page 4: ... installed be sure to remove it 14 It is strictly forbidden to use contactors and other switching devices on the input side of the inverter to directly start and stop frequently 15 Derating is required for areas with an altitude of more than 1000 meters Generally the derating is about 10 every 1000 meters 16 If there are abnormal phenomena such as smoke odor strange noise etc in the inverter pleas...

Page 5: ...us speed Torque response 50ms without PG vector control Torque control Support torque control without PG vector control mode Torque control accuracy 5 Frequency accuracy Digital setting maximum frequency 0 01 Analog setting maximum frequency 0 2 Frequency resolution Digital setting 0 01Hz Analog setting maximum frequency 0 05 Torque boost Automatic torque boost manual torque boost 0 1 30 0 V F cur...

Page 6: ...lti speed operation through built in PLC or control terminal Built in process closed loop control Can easily form a closed loop control system Water supply burst detection Burst detection delay time high pressure detection threshold low pressure detection threshold Operation function Run command channel Operation panel Bolt terminal serial communication port can be switched in various ways Frequen...

Page 7: ...nd below 93 Product Design Executive Standard EN 61800 3 2017 Adjustable speed electric drive system Part 3 Electromagnetic compatibility EMC requirements and specific test methods EN61800 2 2015 speed adjustable electric drive system Part 2 General requirements Rating specifications for low voltage adjustable frequency AC drive systems EN 61800 5 1 2007 Al 2017 Adjustable speed electric drive sys...

Page 8: ... 6 2 Installation and wiring 1 Basic wiring diagram ...

Page 9: ...ltiple functions Common GND OUTPUT the maximum load current cannot bigger than 50mA Analog input and output terminals ACI ACI only receives current input AVI only receives voltage input The setting of the measuring range refers to the description of function codes P2 00 P2 09 Reference ground GND INPUT input voltage range 0 10V input impedance 100KΩ input current range 0 20mA input impedance 500Ω ...

Page 10: ...nd TC can reach 14 kinds For details please refer to the introduction of F2 20 output terminal function TA TC normally open Contact capacity 250VAC 2A COSФ 1 250VAC 1A COSФ 0 4 30VDC 1A TC Power supply port 10V 10V is the common power supply of the analog input terminal circuit The maximum output current is 20mA 12V 12V is the common power supply for digital signal input terminals The maximum outp...

Page 11: ...ter is running reverse ALM Warning indicator Lights up when the inverter failure V Voltage indicator When the light is on it means that the LED display content is voltage data A Current indicator When the light is on it means that the LED display content is current data HZ Frequency indicator When the light is on it means that the LED display content is frequency data ...

Page 12: ...7G S2 16 10 1 5 1 5 0 5 SY2000 1R5G S2 20 16 2 5 1 5 0 5 SY2000 2R2G S2 32 20 4 0 2 5 0 5 SY2000 0R7G 4 10 10 1 0 1 0 0 5 SY2000 1R5G 4 16 10 1 0 1 0 0 5 SY2000 2R2G 4 16 10 1 5 1 5 0 5 SY2000 004G 5R5P 4 25 16 2 5 2 5 0 5 SY2000 5R5G 7 7P 4 32 25 4 0 4 0 0 5 SY2000 7R5G 11P 4 40 32 4 0 4 0 0 5 SY2000 011G 15P 4 63 40 6 0 6 0 0 5 SY2000 015G 018P 4 63 40 6 0 6 0 0 5 SY2000 018G 22P 4 100 63 10 10 ...

Page 13: ...se input frequency KHz 0 00 99 99KHz 0 01KHz 0 00KHz d 11 PID pressure feedback value 0 00 10 00V 0 00 99 99 MPa Kg 0 01V MPa Kg 0 00V MPa Kg d 12 Current count value 0 9999s 1s 0s d 13 Current timing value s 0 9999s 1s 0s d 14 Input terminal status X1 X5 0 1FH 1H OH d 15 Output status Y R 0 1H 1H OH d 16 Module temperature 0 0 132 3 0 1 0 0 d 17 Software upgrade date year 2010 2026 1 2017 d 18 So...

Page 14: ...t the rotating motor Set to start after DC braking EHU2 Overvoltage during deceleration Deceleration time is too short Increase deceleration time Abnormal input voltage Check input power EHU3 Overvoltage during constant speed Abnormal input voltage Check input power EHU4 Over voltage during shutdown Abnormal input voltage Check input power ELU0 Under voltage during operation Input voltage is abnor...

Page 15: ...n factor E EF External equipment fault Fault input terminal of the external device is closed Disconnect the fault input terminal of the external device and clear the fault Attention to check the reason EPID PID feedback disconnected PID feedback circuit is loose Check the feedback connection Feedback value is less than broken wire detection value Adjust the detection input threshold E485 RS485 com...

Page 16: ...al command channel 2 Communication command channel 0 2 0 F0 03 Frequency setting selection 0 Panel potentiometer 1 Digital setting 1 panel key adjustment 2 Digital setting 2 terminal UP DOWN adjustment 3 AVI analog setting 0 10V 4 Combination setting 5 ACI setting 0 20mA 6 Communication setting 7 Pulse setting Note When combination setting chosen the combination setting is selected in F1 15 0 7 0 ...

Page 17: ...perposition selection 0 useless 1 F0 03 PID 2 F0 03 PLC 0000 2111 0000 F0 10 acceleration time The time required for the inverter to accelerate from 0 to the maximum output frequency 0 1 999 9S 0 4 4 0KW 7 5S 5 5 7 5KW 15 0S Model setting F0 11 deceleration time The time required for the inverter to decelerate from the maximum output frequency to 0 Model Defalut 0 75 4 0kW 7 5s 5 5 7 5KW 15s F0 12...

Page 18: ...lti point V F curve users can use F0 17 F0 22 V F curve The V F curve is usually set according to the load characteristics of the motor Note V1 V2 V3 F1 F2 F3 the low frequency voltage setting is too high may cause the motor to overheat or even burn the inverter may be over current stall or over current protection 0 1 Frequen cy value F2 12 5H z F0 18 V F voltage value V1 0 0 Voltage valueV2 25 0 ...

Page 19: ...the initial frequency when the inverter starts 0 0 50 0Hz 1 0Hz F1 02 DC braking current at starting Starting DC braking current and time When the inverter starts perform DC braking according to the set DC braking current before starting and then start the acceleration operation after the set DC braking time before starting If the DC braking time is set to 0 the DC braking is invalid The greater t...

Page 20: ...verter can avoid the mechanical resonance point of the load 0 0 Upper limit frequency 0 0Hz F1 14 Jump range 0 0 10 0Hz 0 0Hz F1 15 Combination frequency setting method 0 Potentiometer digital frequency 1 Potentiometer digital frequency 2 Potentiometer AVI 3 Digital frequency 1 AVI 4 Digital frequency 2 AVI 5 Digital frequency 1 multi speed 6 Digital frequency 2 multi speed 7 Potentiometer multi s...

Page 21: ...ency 6 Upper frequency to upper frequency 37 5H z F1 23 Multi speed frequency 7 Upper frequency to upper frequency 50 0H z F1 24 Speed segment 1 running time Set the running time of segment speed 1 unit is selected by F1 35 default is second 0 0 999 9s 10 0s F1 25 Speed segment 2 running time Set the running time of segment speed 2 the unit is selected by F1 35 the default is second 0 0 999 9s 10 ...

Page 22: ...ration and deceleration time unit LED Thousands reserved 0 unit is 1 second 1 unit is 1 minute 1 unit is 0 1 second 000 211 000 Group F2 Analog and digital input and output parameters Code Item Description Setting range Default Value Amend ment F2 00 AVI input lower limit voltage Set AVI upper and lower voltage limits 0 00 F2 0 1 0 00V F2 01 AVI input upper limit voltage F2 01 10 00V 10 00 V F2 02...

Page 23: ...d jog control 2 Reverse jog control 3 Forward control FWD 4 Reverse control REV 5 Three wire operation control 6 Free stop control 7 External stop signal input STOP 8 External reset signal input RST 9 Normally open input for external fault 10 Frequency increasing command UP 11 Frequency decreasing command DOWN 13 Multi speed selection S1 14 Multi speed selection S2 15 Multi step speed selection S3...

Page 24: ...ignal 12 Counter detection signal 13 Counter reset signal 14 Auxiliary motor 0 14 5 F2 21 Y1 open collector output 0 14 0 F2 22 Relay TA TC closing delay The delay from the change of relay state to the change of output 0 0 255 0s 0 0s F2 23 Relay TA TC closing delay F2 24 Frequency reach FAR detection amplitude The output frequency is within the positive and negative detection width of the set fre...

Page 25: ...connected and public terminal it is invalid and the disconnection is valid 0 1FH 0 F2 30 X1 filter coefficient Used to set the sensitivity of the input terminal If the digital input terminal is susceptible to interference and causes malfunction the parameter can be increased to increase the anti interference ability but if the setting is too large the sensitivity of the input terminal will be redu...

Page 26: ...ing F3 01 and F3 18 LED Hundreds PID feedback input channel 0 AVI 1 ACI LED thousands PID sleep selection 0 invalid 1 Normal sleep This method needs to set specific parameters of F3 10 F3 13 2 Disturb sleep It is the same as the parameter setting when the sleep mode is selected as 0 If the PID feedback value is within the range set by F3 14 it will enter to the disturbance sleep after maintaining ...

Page 27: ...pling period the slower the response but the better the suppression effect of the interference signal it is not necessary to set it under normal circumstances 0 1 10 0s 0 0s F3 07 Deviation limit The deviation limit is the ratio of the absolute value of the deviation between system feedback amount and the given amount to the given amount When the feedback amount is within the deviation limit range...

Page 28: ...urst detection 0 0 130 0s 30 0S F3 16 High pressure detection threshold When the feedback pressure is greater than or equal to this set value the burst pipe fault EPA0 will be reported after F3 15 burst pipe delay When the feedback pressure is less than this set value the burst pipe fault EPA0 will be automatically reset the threshold is the percentage of constant pressure 0 0 200 0 150 0 F3 17 Lo...

Page 29: ... reset function which can only be reset manually 10 means that the number of times is unlimited that is countless times 0 10 0 F4 09 Fault automatic reset interval time Set the interval time of fault automatic reset 0 5 25 0s 3 0s F4 10 Starting voltage of Energy consumption braking If the internal DC voltage of the inverter is higher than the initial voltage of energy consumption braking the buil...

Page 30: ...y to suppress overcurrent during constant speed operation 0 close 1 10 0 F5 07 Current limit level The current limiting level defines the current threshold of the automatic current limiting action and its set value is a percentage relative to the rated current of the inverter 50 250 180 F5 08 Feedback disconnection detection value This value is the percentage of PID given amount When the feedback ...

Page 31: ...lect when acceleration 0 invalid 1 valid LED tens digit select when deceleration 0 invalid 1 effective LED hundreds o select when constant speed 0 invalid 1 valid LED thousands reserved 000 111 011 Group F6 Communication parameters Code Item Description Setting range Default Value Amend ment F6 00 Local address Set the local address 0 is the broadcast address 0 247 1 F6 01 MODBUS communication con...

Page 32: ... set the ratio of the operating frequency of multiple inverters 0 01 10 00 1 00 Group F7 supplementary functional parameters Code Item Description Setting range Default Value Amend ment F7 00 Counting and timing mode LED ones count arrival processing 0 Single period counting stop output 1 Single period continue to output 2 Cycle count stop output 3 Cycle count continue to output LED Tens reserved ...

Page 33: ...ffect on the actual speed 0 01 99 99 1 00 F8 03 Parameter initialization 0 No operation The inverter is in the normal parameter reading and writing state Whether the setting value of the function code can be changed depends on the setting state of the user password and the current working state of the inverter 1 Restore factory settings All user parameters are restored to factory settings accordin...

Page 34: ...ck area cyclic redundancy check CRC 2 RTU data frame bit sequence diagram With Parity check Start 1 2 3 4 5 6 7 8 Par Stop Without Parity check Start 1 2 3 4 5 6 7 8 Stop 2 Reading and writing function code description Function code Function description 03 Read register 06 Write register 3 Parameter address description of communication protocol Function Description Address definition Explanation o...

Page 35: ...Bit2 Jog Bit3 Forward Bit4 Reverse Bit5 Bit7 reserved Bit8 Communication given Bit9 Analog signal input Bit10 Communication operation command channel Bit11 Parameter lock Bit12 Running Bit13 Jog command Bit14 Bit15 reserved R Read fault code description 2100H 00 No abnormality 01 Module failure 02 Overvoltage 03 Temperature failure 04 Inverter overload 05 Motor overload 06 External fault 07 09 Res...

Page 36: ...C check code Response information frame format Return frame Address 01H Function 03H DataNum 2 04H Data1 2Byte 17H 70H Data2 2Byte 00H 00H CRC CHK Low FEH CRC CHK High 5CH Data analysis 01H Inverter address 03H Reading function code 04H Is the product of reading items 2 1770H Read the data of 2102H set frequency 0000H Read the data of 2103H output frequency 5CFEH 16 bit CRC check code 5 06H Writin...

Page 37: ...e correct return the same input data 8 Regular inspection and maintenance Changes in the operating environment of the inverter such as the effects of temperature humidity smoke and the aging of internal components of the inverter may cause various failures of the inverter Therefore the inverter must be inspected daily during storage and use and regular maintenance should be carried out 1 Daily mai...

Page 38: ...the power supply of the inverter and all the connections between the inverter and the motor and after all the main circuit input and output terminals are reliably shorted with wires then test the ground please Use a qualified 500V megohmmeter or the corresponding voltage range of the insulation tester do not use a faulty instrument It is strictly forbidden to connect only a single main circuit ter...

Page 39: ...Headquarter Manufacturer Shanghai Sanyu Industry Co Ltd Address Room 723 No 800 Shangcheng Road Shanghai China Tel 86 21 65046976 Fax 86 21 516865815 Postal code 200120 Website www sanyuacdrive com E mail infor sanyuinverter com ...

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