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Introducing Modbus Protocol

The Modbus RTU protocol is used for communication in

Ai

205. The data

format and error check method are defined in Modbus protocol. The half duplex
query and respond mode is adopted in Modbus protocol. There is only one
master device in the communication net. The others are slave devices, waiting
for the query of the master.

Transmission mode

The mode of transmission defines the data structure within a frame and the

rules used to transmit data. The mode is defined in the following which is compatible
with Modbus RTU Mode*.

Modbus is trademark of Modicon, Inc.

62

Coding System

Start bit

Data bits

Parity

Stop bit

Error checking

8-bit binary

1

8

no parity

1

CRC check

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Summary of Contents for Ai205

Page 1: ......

Page 2: ...ssion of Amptron The information contained in this document is believed to be accurate at the time of publication however Amptron assumes no responsibility for any errors which may appear here and reserves the right to make changes without notice Please ask the local represent for latest product specications before ordering Ⅰ ...

Page 3: ...or setting process Dangerous symbol Failure to observe the information may re sult in injury or death Alert symbol Alert the potential dangerous Observ the information after the symbol to avoid possible in jury or death Installation and maintenance of theAi205 meter should only be performed by qualified competent personnel that have appropriate training and experience with high voltage and current...

Page 4: ...lation Method 9 Wiring of Ai205 12 Chapter 3 Basic Operation and Setup 29 Display Panel and Keys 30 Metering Data Reading 32 Statistics Display 41 Meter Parameter Setting 44 Introduction of Measurement and Functions of Ai205 52 Chapter 4 Communication 61 Introducing Modbus Protocol 62 Format of the Communication 65 Address Table of Ai205 71 Appendix 93 Appendix A Technical Data and Specification 9...

Page 5: ...nual carefuly before operating or setting the Ai205 meter to avoid unnecessary trouble You may read part of this manual depend on how you use the Ai205 meter Chapter 1 helps you to understand the fundamental function specification and application area of Ai205 Chapter 2 describes in detail the installation and wiring of Ai205 Chapter 3 tells you the data display and paramenter setting method of Ai...

Page 6: ...Chapter 1 Introduction The purpose of Ai205 The Application Area of Ai205 The Function of Ai205 Ai205 Series 1 ...

Page 7: ...urement with intelligent multifunction and simple HMI interface Idea Choice for Electric Automation SCADA System Ai205 can be used to replace all traditional electric meters It also can be used as Remote Terminal Unit RTU for monitoring and controlling in a SCADA system All the measured data is available via digital RS485 communication ports running the MobusTM protocol Energy Management Ai205 can...

Page 8: ...ne Voltage THD Even THD and Odd THD of Current Harmonics and K Factor Unbalance Factor of Voltage Unbalance Factor of Current Energy and Demand Kwh of 4 quadrants Import Export Total Net Kvarh of 4 quadrants Import Export Total Net Demand of Power and Reactive Power Remote Control 4 Digital Input DI Wet or Dry 2 Relay Output 2 Digital Output DO Power Quality Analysis With the powerful digital sign...

Page 9: ...quency Unbalance Factors or Demands and Pulse Output based on Energy or Reactive Energy in Ai205 Status monitoring is possible using the 4 digital inputs It combines high accuracy measurement with intelligent multifunction and friendly HMI interface Accuracy of Voltage and Current is 0 2 Accuracy of Power and Energy is 0 5 Small Size and Easy Installation With the size of DIN96 96 and 55mm depth a...

Page 10: ...I O Advanced Ai205 has the basic measuring function of Ai205 It also gets extra function as harmonics analysis Max Min record and over under limit alarming Comparison of Ai205 Series REAL TIME MEASURING FUNCTION Phase Voltage Line Voltage Current Power Reactive Power Apparent Power Power Factor Frequency Energy Reactive Energy Demand Parameter V1 V2 V3 Vlnavg V12 V23 V31 Vllavg I1 I2 I3 In Iavg P1...

Page 11: ...UNCTION Voltage Unbalance Factor Current Unbalance Factor Voltage THD Current THD Harmonics Voltage Crest Factor TIF Current K factor MAX withTime Stamp MIN with Time Stamp Switch Status DI Relay Output Pulse Output Over Under Limit Alarm RS485 Port Real Time Clock Parameter U_unbl I_unbl THD_V1 THD_V2 THD_V3 THD_Vavg THD_I1 THD_I2 THD_I3 THD_Iavg Harmonics 2nd to 31st Crest Factor THFF K Factor M...

Page 12: ...Chapter 2 Installation Appearance and Dimensions Installation method Wiring of Ai205 7 ...

Page 13: ...d Wiring Terminal 8 Installation Clip Description The Ai205 enclosure is made of high strength anti combustion engineering plastic After the installation this part is in front of panel The color of the front casing is selectable Large bright blue backlight LCD Display Four keys are used to select display and to set parameters of the meter Used for Voltage and Current input Used for auxiliary power...

Page 14: ... Side Fig 2 2 Dimensions Installation Method Environmental Please check the environment temperature and humidity to ensure the satisfaction of Ai205 meter s requirement before the meter installation Temperature Operation 20o C to 70o C Storage 40o C to 85o C Humidity 5 to 95 non condensing Ai205 meter should be installed in dry and dust free environment and avoid heat radiation and high electrical...

Page 15: ...ize is as fig 2 3 Unit mm Fig 2 3 Panel Cutting 2 Remove the clips from the meter and insert the meter into the square hole from the front side Fig 2 4 Put the meter into the square hole 3 Put clips back to the meter from the backside and push the clip tightly so that the meter is fixed on the panel 10 0 5 0 0 90 0 5 0 0 9 0 Panel Cut Panel ...

Page 16: ...strip wiring and wire arrangement could be done easily The recommend minimum space around the meter is show in Table2 2 and Fig 2 6 11 Environment Temperature 50 50 Table 2 2 Minimum Space Minimum Distance mm a b c d e f g 25 25 38 38 64 25 25 38 38 51 51 76 38 38 d c e b a f g Fig 2 5 Use the clips to fasten the meter on the panel Panel Panel Panel ...

Page 17: ...minal Strip Only the Ai205 with PRIO option has the Extend Terminal Strip The 1 2 and 3 are used to represent each phase of three phase system They have the same meaning with A B and C or R S and T in three phase system 12 Voltage Current Input Terminal Strip Auxiliary Terminal Strip Note NC means No Connection Extend Terminal Strip Fig 2 7 Terminal Strips Aux ...

Page 18: ...ypical 1A 250Vac should be used in auxiliary power supply loop No 24 terminal must be connected to the safety earth system of switchgear An isolated transformer or EMI filter should be used in the auxiliary power supply loop if there is power quality problem in the power supply 13 Note Make sure the auxiliary power terminal of the meter G is connected to the safety Earth of switchgear Note Make su...

Page 19: ...age V1 V2 and V3 against Vn of Ai205 should be less than 480Vac If the input voltage is higher than 480Vac the PT should be used A fuse typical 1A 250Vac should be used in voltage input loop PT should be used to transform the high voltage into measurement rangeof Ai205 if it is usedinhigh voltagesystem The wire number of voltage input could be AWG16 22 or 0 6 1 5mm2 Note In no circumstance could t...

Page 20: ...or switch in the CT loop and one end of the CT loop should be connected to the ground Vn Connection Vn is the reference point of Ai205 voltage input The lower is wire resistance the less is the error Three phase wiring diagram Ai205 can satisfy almost all kinds of three phase wiring diagram Please read this part carefully before you begin to do the wiring so that you may chose a wiring diagram sui...

Page 21: ...stribution power system The power line can be connected to the meter voltage input directly as in fig 2 10 In the high voltage input system 3PT Wye mode is often used as in fig 2 11 The voltage input mode of the Ai205 should be set 3LN for both voltage input wiring mode Fig 2 10 direct connection Fig 2 11 3LN with 3PTs 16 ...

Page 22: ...ulated according to the V1 and V3 The voltage input mode of the Ai205 should be set 2LN for 2PT voltage input wiring mode 17 Fig 2 12 2LN with 2PTs 3 Phase 3 Line open Delta Mode 2LL Open delta wiring mode is often used in high voltage system V2 and Vn connected together in this mode The voltage input mode of the Ai205 should be set 2LL for voltage input wiring mode Fig 2 13 2LL with 2PTs ...

Page 23: ... current input of three phase system can be looked as 3CT one whether there are 2 CTs or 3 CTs in the input side The current input mode of the Ai205 should be set 3CT for this current input wiring mode Fig 2 14 3CT a 18 Fig 2 15 3CT b ...

Page 24: ...e I2 value is calculated from formula i1 i2 i3 0 The current input mode of the Ai205 should be set 2CT for this current input wiring mode Fig 2 16 2CT 1CT If it is a three phase balance system 1 CT connection method can be used All the other two current are calculated according to the balance supposing Fig 2 17 1CT 19 ...

Page 25: ... are put together in one drawing The Ai205 meter will display normally only that the setting of the meter is assorted with the wiring of the voltage and current input 1 3LN 3CT with 3 CTs 2 3LN 3CT with 2 CTs 20 Fig 2 18 3LN 3CT with 3CTs Fig 2 19 3LN 3CT with 2 CTs ...

Page 26: ...3 2LN 2CT 4 2LN 1CT 5 2LL 3CT 21 Fig 2 20 2LN 2CT Fig 2 21 2LN 1CT Fig 2 22 2LL 3CT ...

Page 27: ...6 2LL 2CT 7 2LL 1CT 8 Single Phase 2 Line wiring mode setting 3LN 3CT 22 Fig 2 23 2LL 2CT Fig 2 24 2LL 1CT Fig 2 25 Single Phase 2 Lines ...

Page 28: ...re optional The terminals of the two additional are DI3 DI3 25 26 and DI4 DI4 27 28 The circuit drawing of the digital input is simplified as Fig 2 27 Auxiliary power supply for the digital input is 12 24Vdc If the connection wire is too long a relative higher voltage should be adopted The current in the loop line should be less than 10mA 15mA and the Max current is 30mA 23 Fig 2 26 Single Phase 3...

Page 29: ...s drawing as in fig 2 28 The wire of digital input should be chose between AWG22 0 5mm2 AWG16 1 5mm2 Relay Output There are two additional relay output for option in Ai205 The terminal are R11 R12 31 32 and R21 R22 33 34 These two relay output are used to remote control electric switch in power system Relay type is mechanical Form A contact with 3A 250V or 3A 30Vdc A mediate relay is recommended i...

Page 30: ...ing from 50 300ms The wire of relay output should be chose between AWG22 0 5mm2 AWG16 1 5mm2 Digital Output There are two digital outputs for option The terminals of the digital output are DO1 DO1 35 36 and DO2 DO2 37 38 These two digital output can be used as energy pulse output or over limit alarming output Digital output circuit form is open collector The simplified circuit is as fig 2 30 25 Co...

Page 31: ...eper is as fig 2 31 ThewireofdigitaloutputshouldbechosebetweenAWG22 0 5mm2 AWG16 1 5mm2 Communication The communication port and protocol of Ai205 are RS485 and Modbus RTU The terminals of communication are A B and S 11 12 13 A is differential signal B is differential signal and S connected to shield of twisted pair cable Up to 32 devices can be connected on a RS485 bus Use good quality shielded t...

Page 32: ... the RS485 net as in fig 2 32 In fig 2 32 the Rt is a anti signal reflecting resistor 120 300 Ohm 0 25W Normally it added to the circuit beside the last Ai205 meter if the communication quality is not good 2 Circle Ai205 meters are connected in a closed circle for the purpose of high reliability There is no need of anti signal reflecting resistor 27 Fig 2 32 Line mode Fig 2 33 Circle mode Converte...

Page 33: ...y shielded twisted pair of cable AWG22 0 6mm2 or larger is very important The shield of each segment of the RS485 cable must be connected to the ground at one end only Keep cables away as much as possible from sources of electrical noise Use RS232 RS485 or USB RS485 converter with optical isolated output and surge protection 28 Fig 2 34 Star mode 232 485 Converter Master PC ...

Page 34: ...Chapter 3 Meter Operation and Parameter Setting Display panel and keys Metering data reading Statistics display Meter parameter setting Introduction of measurement and functions of Ai205 29 ...

Page 35: ...display segments are illustrated in fig 3 1 30 Table 3 1 Display Panel discription Fig 3 1 All Display Segments 3 4 5 6 7 9 8 10 11 2 12 1 13 Discription Display metering data Voltage current power power factor frequency THD demand unbalance factor max min etc Energy data display or real time clock Display load current percentage Display Four lines of letter in the metering area One line of letter...

Page 36: ...PF F Avg and N indicate the fourth line data With letter U voltage unbalance factor With letter I Current unbalance factor Capacitor label capacitive load Inductor inductive load imp consumption energy exp generating energy total absolute sum of imp and exp energy net algebraic sum No label no communication One label inquiry Two labels inquiry and answer No label no pulse output With label pulse o...

Page 37: ...d current in the metering area The first screen display U1 U2 U3 and Ulnavg as in fig 3 2 U1 100 3V U2 100 1V U3 100 2V and Ulnavg 100 2V Load rating is 50 inductive load imp energy is 8 8Kwh communication state normal pulse output DI1 DI2 and DI3 are open DI4 is close Press V A go to the second screen The second screen display current of each phase I1 I2 I3 and In as in fig 3 3 I1 2 498 I2 2 499 ...

Page 38: ... screen Note when the meter is set to 2LL there is no phase voltage and phase current screen no first and second screen only third and fourth screen The fourth screen display current of each phase and average current as in fig 3 5 I1 2 498A I2 2 499A I3 2 491A Iavg 2 496A Press V A go back to the first screen 33 Fig 3 4 Three phase voltage Fig 3 5 Three phase current ...

Page 39: ... each phase Q1 Q2 Q3 and system total reactive power Qsum As in fig 3 7 Q1 0 217Kvar Q2 0 216Kvar Q3 0 216Kvar and Qsum 0 649Kvar Press P go to the third screen The third screen display apparent power of each phase S1 S2 S3 and system total apparent power Ssum As in fig 3 8 S1 0 250KVA S2 0 250KVA S3 0 249KVA and Ssum 0 749KVA Press P go to the fourth screen Fig 3 7 Three phase reactire power Fig ...

Page 40: ... system total reactive power Qsum system total apparent power Ssum and system frequency F As in fig 3 11 Psum 0 375KW Qsum 0 649Kvar Ssum 0 749 KVA and F 50 00Hz Press P go to seventh screen 35 The fourth screen power factor of each phase PF1 PF2 PF3 and system average power factor PF As in fig 3 9 PF1 0 500 PF2 0 500 PF3 0 500 and PF 0 500 Press P go to the fifth screen Fig 3 10 System power and ...

Page 41: ...y power quality data The first screen display THD of voltage The display will be THD of line to line voltage THD_U12 THD_U23 THD_U31 and THD of average line to line voltage THD_Ull when the wiring of voltage input is 2LL The display will be THD of phase voltage THD_U1 THD_U2 THD_U3 and THD of average phase voltage THD_Uln when the wiring of the voltage is input 2LN or 3LN Fig 3 12 System power dem...

Page 42: ...3 and THD of average current THD_Iavg As in fig 3 15 THD of three phase voltage THD_I1 0 68 THD_I2 0 68 THD_I3 0 68 THD_Iavg 0 68 Press H key go to the third screen The third screen display three phase voltage unbalance factor and three phase current unbalance factor As in fig 3 16 voltage unbalance factor 0 8 current unbalance factor 0 9 Press H key go back to the first screen 37 Fig 3 14 THD of ...

Page 43: ...d screen The second screen Display the generation energy Eq_exp 0 0 As in fig 3 18 Ep_exp 0 0Kwh 38 Press E key go to the third screen The third screen Display absolute sum of imp and exp energy Ep_total As in fig 3 19 Ep_total 8 8Kwh Press E key go to the fourth screen Fig 3 17 Import energy Fig 3 18 Export energy Fig 3 19 Total energy ...

Page 44: ...th screen Display inductive reactive energy Eq_imp As in fig 3 21 Eq_imp 15 2Kvarh Press E key go to the sixth screen The sixth screen Display the capacitive reactive energy Eq_exp As in fig 3 22 Eq_exp 0 0Kvarh Press E key go to the seventh screen 39 Fig 3 20 Net energy Fig 3 21 Inducfive reactive energy Fig 3 22 Capacitive reactive energy ...

Page 45: ...th screen The eighth screen Display algebraic sum of reactive energy As in fig 3 24 Eq_net 15 2Kvarh Press E key go to the ninth screen The ninth screen Display date Format mm dd yyyy As in fig 3 25 the date is Jan 18 2002 Press E key go to the tenth screen 40 Fig 3 23 Total reactive energy Fig 3 24 Net reactive energy Fig 3 25 Date ...

Page 46: ...and U3_max 100 2V Fig 3 26 Time Statistics Display Press P and V A Keys simultaneously the Max and Min value of metering data will display on the screen The time stamp can be access through communication Press the P and V A keys simultaneously go to the statistics screen Fig 3 27 Max phase voltage Press P key to display the Min value of voltage The Min label display on the low right of the letter ...

Page 47: ...in and vice versa Press V A key go to the next screen The third screen Max value of the current As in fig 3 30 I1_max 2 498A I2_max 2 499A and I3_max 2 491A Press P key to change display from Max to Min and vice versa Press V A key go to the next screen Fig 3 28 Min phase voltage Fig 3 29 Max line voltage Fig 3 30 Max Current The third screen Display the Max and Min value of Current The fourth scr...

Page 48: ...o to the next screen The fifth screen Max value of demand and frequency As in fig 3 32 Max value of system total power demand Dmd_P_max 0 375KW Max value of sys tem total reactive power dem and Dmd_P_max 0 649Kvar Max value of system total apparent power demand Dmd_P_max 0 749KVA and Max value of system frequency Press P key to change display from Max to Min and vice versa Press V A key go to the ...

Page 49: ...into the parameter setting mode Only the person who know the access code can do the parameter setting The access code is 4 digits decimal number It is from 0000 to 9999 The factory default is 0000 After key in the right access code press V A to go to the first parameter setting page otherwise go back to the metering data display page 44 Note The setting should be done by the professional personnel...

Page 50: ...ies communication setting of the Ai205 is 8 data bit no parity 1 star bit and 1 stop bit Baud rate could be one of the seven 600 1200 2400 4800 9600 19200 38400 as in fig 3 35 the baud rate of the Ai205 is 19200bps Press P or E to select one Press V A Key go to the next page The third screen voltage input wiring setting page Voltage input could be one of the three modes 3LN 2LN and 2LL refer to ch...

Page 51: ...integer from 100 to 500 000 The unit is volt As in fig 3 38 PT1 1000V press P E and H to change the value Press V A key for acknowledgment and going to the next setting page The sixth screen PT secondary rating voltage PT2 setting page PT2 value is an integer from 100 to 400 The unit is volt As in fig 3 39 PT2 100V press P E and H to change the value Press V A key for acknowledgment and going to t...

Page 52: ...ng The digital output mode can be set as alarm output or pulse output As in fig 3 41 the digital output is set as pulse output Press V A key for acknowledgment and going to the next setting page The ninth screen DO1 output item selecting The DO1 output can be one of the following 8 47 energy items as in Table3 2 0 1 2 3 4 No output Ep_imp Ep_exp Eq_imp Eq_exp 5 6 7 8 Ep_total Ep_net Eq_totaEq_net ...

Page 53: ...nteger from 1 to 50 One digit represents 20ms As in fig 3 44 the pulse width is set to be 2 that is 2x20 40ms The twelfth screen Energy pulse rate setting page Pulse rate means the energy value per pulse It can be the integer of 1 to 6000 One digit represents 0 1Kwh or 0 1Kvarh As in fig 3 45 the pulse rate is 10 Fig 3 43 DO2 output item Fig 3 44 Pulse width Fig 3 45 Pulse rate ...

Page 54: ...time Fig 3 48 Relay2 mode the relay changes from off to on for a period of time Ton and than goes off Ton can be setting from 50 300ms 0 latching 1 momentary As in fig 3 46 Relay1 is set momentary mode The fourteenth screen Relay1 closing time setting When the relay mode is set momentary the closing time Ton is integer from 50 to 3000ms As in fig 3 47 the closing time Ton of relay1 is 50ms The fif...

Page 55: ...s not be touched for a period time The on time can be set from 0 to 120 Minute The back light will always be on if the setting value is 0 As in fig 3 50 the setting time of the back light is 5 minute The back light will automatically go to off if there is no touch on the keys The eighteenth screen Sliding window time of demand setting page Sliding window time of demand is from 1 to 30 Minute The w...

Page 56: ...stics value Press V A key go to the next setting page The twentieth screen System date setting page Display format is MM DD YYYY MM 1 to 12 DD 1 to 31 YYYY 2000 to 2099 As in fig 3 53 the setting date is Jan 18 2002 Press V A key go to next setting page The twenty first screen system timesetting page The display format is hh mm ss hh 0 to 23 mm 0 to 59 ss 0 to 59 As in fig 3 54 the system time is ...

Page 57: ...part Voltage U True RMS value of three phase voltages three line to line voltages and their average are measured and displayed in Ai205 Current I True RMS value of three phase currents neutral current and their average are measured and displayed in Ai205 Power P Three phase power and system total power are measured and display in Ai205 Reactive power Q Three phase reactive power and system total r...

Page 58: ...ive power and apparent power The demand statistics method in Ai205 is sliding window The sliding window time can be chose between 1 to 30 Minutes The window slides one Minute each time For example the sliding window time is supposed to be 3 Minute If average power of the first Minute is 12 average power of the second Minute is 14 and average power of the third Minute is 10 then the total demand of...

Page 59: ...rmonic divided by fundamental Total Even harmonics distortion Root of the sum of each even harmonics square Total Odd harmonics distortion Root of the sum of each odd harmonics square Telephone Interference Factor THFF The interference factor to telephone communication system The expression of the THFF is as following In the expression the Uh is the voltage of the hth harmonic and the Ph is coeffi...

Page 60: ...uency demand Real time clock There is a real time clock in the Ai205 P2 or P3 The date month year hour minute and second can be read or set from front panel or through communication Phase Angle different the phase angel difference gives the phase angle relationship between the voltage and current It is from 0 to 360o When the wiring of voltage input is set to be 2LL it gives the phase difference U...

Page 61: ...ing to describe how the first inequation is being set and determined Enable the first inequation Let the variable1 to represent the alarming parameter Set the limit value to the Ref1 Set the time limit to the Limit_t Select the inequatity sign or Select the related digital output DO Determine if the parameter is over the limit and over the time limit If it is true then Record the value date and ti...

Page 62: ... Limit_t is the time limit It is an integer from 0 to 255 One digit is 300ms Zero means no time limit Trigger the record and alarming output immediately on the over limitation All the inequations have the same time limit If the Limit_t 20 the time limitation is 20x300 6000ms Inequation sign register INEQU_Sign1 to INEQU_Sign9 INEQU_Sign 0 select the low limit INEQU_Sign 1 select the up limit Var n...

Page 63: ...s 200 5 The up limit of current I1 is set to be 180A The setting of the registers is as following Enable the inequation1 EN_INEQU register bit 0 1 The current I1 is number 9 in Table3 3 The setting of the Var1 is 9 The relation of real current and the data stored in register is Real current data in registerxCT1 5 1000 The CT1 is 200 and up limit of current is 180A then the data in register is 4500...

Page 64: ...pulse ratio can be set while pulse width means how long the duration of the pulse is and pulse ratio means how much energy that one pulse is represented When the energy accumulates to the setting limit there will be a pulse output from the assigned DO port Pulse output assignment register any integer from 0 to 8 The digit 0 means no assignment while 1 to 8 corresponding to Ep_imp Ep_exp Eq_imp Eq_...

Page 65: ... 10 In practice the pulse width and the pulse ratio are selected according to system power The relation of the two parameters should satisfied following expression In the expression the Pmax is the maximum power or reactive power The unit is KW or Kvar Recommend pulse ratio is 3 to 5 times the right side value of the above expression Relay output The two relay output option in Ai205 can be used to...

Page 66: ...Introducing Modbus Protocol Format of Communication Data Address Table 61 Chapter 4 Communication ...

Page 67: ... master device in the communication net The others are slave devices waiting for the query of the master Transmission mode The mode of transmission defines the data structure within a frame and the rules used to transmit data The mode is defined in the following which is compatible with Modbus RTU Mode Modbus is trademark of Modicon Inc 62 Coding System Start bit Data bits Parity Stop bit Error ch...

Page 68: ...ng Function Field The function code field of a message frame contains eight bits Valid codes are in the range of 1 255 decimal When a message is sent from a master to a slave device the function code field tells the slave what kind of action to perform Code Meaning Action 01 Read Relay output Status Obtain current status of Relay Output 02 Read Digital Input DI Status Obtain current status of Digi...

Page 69: ...f data bytes to follow in the data field and the data to be written into the registers If no error occurs the data field of a response from a slave to a master contains the data requested If an error occurs the field contains an exception code that the master application can use to determine the next action to be taken The data field can be nonexistent of zero length in certain kinds of messages E...

Page 70: ...SB was a1 the register is then exclusive ORed with a preset fixed value If the LSB was a 0 no exclusive OR takes place This process is repeated until eight shifts have been performed After the last eighth shift the next 8 bit byte is exclusive ORed with the register current value and the process repeats for eight more shifts as described above The final contents of the register after all the bytes...

Page 71: ...dress of each Relay is Relay1 0000H and Relay2 0001H The following query is to read Relay Status of Ai205 Number 17 Query Addr Fun relay start relay start relay of relay of CRC16 CRC16 reg hi reg lo regs hi regs lo Hi Lo 66 11H 01H 00H 00H 00H 02H BFH 5BH Table4 4 Read the status ofRelay1 and Relay2 QueryMessage Response The Ai205 response includes the Ai205 address function code quantity of data ...

Page 72: ...is DI1 0000H DI2 0001H DI3 0002H and DI4 0003H The following query is to read the 4 DI Status of Number 17 Ai205 Query Addr Fun DI start DI start DI num DI num CRC16 CRC16 addr hi addr lo hi lo hi lo 11H 02H 00H 00H 00H 04H 7BH 59H Table4 6 Read 4 DIs Query Message Response The Ai205 response includes the Ai205 address function code quantity of data characters the data characters and error checkin...

Page 73: ...17 the data address of F is 0130H V1 is 0131H and V2 is 0132H Addr Fun Data start Data start Data of Data of CRC16 CRC16 addr hi addr lo regs hi regs lo regs hi regs lo 11H 03H 01H 30H 00H 03H 06H A8H Table 4 8 Read F V1 V2 Query Message Response The Ai205 response includes the Ai205 address function code quantity of data byte data and error checking An example response to read F V1 and V2 F 1388H...

Page 74: ...05H 00H 00H FFH 00H 8EH AAH Addr Fun Relay address Relay address Value Value CRC CRC high Low High low high low 11H 05H 00H 00H FFH 00H 8EH AAH Table4 11 Control Relay Response Message 5 Preset Reset Multi Register Function Code 16 Query Function 16 allows the user to modify the contents of a Multi Register Any Register that exists within the Ai205 can have its contents changed by this message The...

Page 75: ...low B9H Table4 12 Preset KWH Query Message Response The normal response to a preset Multi Register request includes the Ai205 address function code data start register the number of registers and error checking Address 11H Function code 10H Data start address high 01H Data start address low 56H Data register high 00H Data register low 02H CRC high A2H CRC low B4H Table4 13 Preset Multi Registers R...

Page 76: ...t I1 0 65535 word R 013AH Current I2 0 65535 word R 013BH Current I3 0 65535 word R 013CH Average Current Iavg 0 65535 word R 013DH Neutral Line Current In 0 65535 word R 013EH Phase Power P1 32768 32767 Integer R 013FH Phase Power P2 32768 32767 Integer R 0140H Phase Power P3 32768 32767 Integer R 0141H System Power Psum 32768 32767 Integer R 0142H Phase Reactive Power Q1 32768 32767 Integer R 01...

Page 77: ...0H Load Type RT L C R 76 67 82 word R 0151H Power Demand Dmd_P 32768 32767 Integer R 0152H Reactive power Demand Dmd_Q 32768 32767 Integer R 0153H Apparent Power Demand Dmd_S 0 65535 word R The Relationship between numerical value in register of Ai205 and the real physical value is as following table Rx is the numerical value in register of Ai205 Parameter Relationship Unit Voltage V1 V2 V3 V12 V2...

Page 78: ...0 99999999 9 Dword R W 015AH High 16 Bit Import Reactive Energy 015BH Low 16 bit Eq_imp 0 99999999 9 Dword R W 015CH High 16 Bit Export Reactive Energy 015DH Low 16 bit Eq_exp 0 99999999 9 Dword R W 015EH High 16 Bit Absolute Sum of 015FH Low 16 bit Energy Ep_total 0 99999999 9 Dword R W 0160H High 16 Bit Algebra Sum of 0161H Low 16 bit Energy Ep_net 0 99999999 9 Dword R W 0162H High 16 Bit Absolu...

Page 79: ...ord R 016CH Total Harmonic Distortion of I1 THD_I1 0 10000 word R 016DH Total Harmonic Distortion of I2 THD_I2 0 10000 word R 016EH Total Harmonic Distortion of I3 THD_I3 0 10000 word R 016FH Average Total Harmonic Distortion of Current THD_I 0 10000 word R 0170H 018DH Harmonic Content of V1 or V12 2nd to 31st 0 10000 word R 018EH Total Odd Harmonic Distortion of V1 or V12 0 10000 word R 018FH Tot...

Page 80: ...tion of I1 0 10000 word R 01F5H Total Even Harmonic Distortion of I1 0 10000 word R 01F6H K Factor of I1 0 65535 word R 01F7H 0214H Harmonic Content of I2 2nd to 31st 0 10000 word R 0215H Total Odd Harmonic Distortion of I2 0 10000 word R 0216H Total Even Harmonic Distortion of I2 0 10000 word R 0217H K Factor of I2 0 65535 word R 0218H 0235H Harmonic Content of I3 2nd to 31st 0 10000 word R 0236H...

Page 81: ...d R 0244H hour 0 23 word R 0245H min 0 59 word R 0246H sec 0 59 word R 0247H V3_max 0 65535 word R 0248H year 2000 2099 word R 0249H mon 1 12 word R 024AH day 1 31 word R 024BH hour 0 23 word R 024CH min 0 59 word R 76 Time Stamp of V1_max Time Stamp of V2_max Time Stamp of V3_max Max Min Statistics Value with Time Stamps Function code 03 Odd THD HDo Rx 10000 100 NA Even THD HDe Rx 10000 100 NA Cr...

Page 82: ... 0259H hour 0 23 word R 025AH min 0 59 word R 025BH sec 0 59 word R 025CH V31_max 0 65535 word R 025DH year 2000 2099 word R 025EH mon 1 12 word R 025FH day 1 31 word R 0260H hour 0 23 word R 0261H min 0 59 word R 0262H sec 0 59 word R 0263H I1_max 0 65535 word R 0264H year 2000 2099 word R 0265H mon 1 12 word R 0266H day 1 31 word R 0267H hour 0 23 word R 0268H min 0 59 word R 0269H sec 0 59 word...

Page 83: ... min 0 59 word R 0277H sec 0 59 word R 0278H P_max 32768 32767 integer R 0279H year 2000 2099 word R 027AH mon 1 12 word R 027BH day 1 31 word R 027CH hour 0 23 word R 027DH min 0 59 word R 027EH sec 0 59 word R 027FH Q_max 32768 32767 integer R 0280H year 2000 2099 word R 0281H mon 1 12 word R 0282H day 1 31 word R 0283H hour 0 23 word R 0284H min 0 59 word R 0285H sec 0 59 word R 0286H S_max 0 6...

Page 84: ... word R 0294H F_max 0 7000 word R 0295H year 2000 2099 word R 0296H mon 1 12 word R 0297H day 1 31 word R 0298H hour 0 23 word R 0299H min 0 59 word R 029AH sec 0 59 word R 029BH Dmd_P_max 32768 32767 integer R 029CH year 2000 2099 word R 029DH mon 1 12 word R 029EH day 1 31 word R 029FH hour 0 23 word R 02A0H min 0 59 word R 02A1H sec 0 59 word R 02A2H Dmd_Q_max 32768 32767 integer R 02A3H year 2...

Page 85: ...cord 02B0H V1_min 0 65535 word R 02B1H year 2000 2099 word R 02B2H mon 1 12 word R 02B3H day 1 31 word R 02B4H hour 0 23 word R 02B5H min 0 59 word R 02B6H sec 0 59 word R 02B7H V2_ min 0 65535 word R 02B8H year 2000 2099 word R 02B9H mon 1 12 word R 02BAH day 1 31 word R 02BBH hour 0 23 word R 02BCH min 0 59 word R 02BDH sec 0 59 word R 02BEH V3_ min 0 65535 word R 02BFH year 2000 2099 word R 80 ...

Page 86: ...in 0 65535 word R 02CDH year 2000 2099 word R 02CEH mon 1 12 word R 02CFH day 1 31 word R 02D0H hour 0 23 word R 02D1H min 0 59 word R 02D2H sec 0 59 word R 02D3H V31_ min 0 65535 word R 02D4H year 2000 2099 word R 02D5H mon 1 12 word R 02D6H day 1 31 word R 02D7H hour 0 23 word R 02D8H min 0 59 word R 02D9H sec 0 59 word R 02DAH I1_min 0 65535 word R 02DBH year 2000 2099 word R 02DCH mon 1 12 wor...

Page 87: ...9 word R 02EAH mon 1 12 word R 02EBH day 1 31 word R 02ECH hour 0 23 word R 02EDH min 0 59 word R 02EEH sec 0 59 word R 02EFH P_ min 32768 32767 integer R 02F0H year 2000 2099 word R 02F1H mon 1 12 word R 02F2H day 1 31 word R 02F3H hour 0 23 word R 02F4H min 0 59 word R 02F5H sec 0 59 word R 02F6H Q_ min 32768 32767 integer R 02F7H year 2000 2099 word R 02F8H mon 1 12 word R 02F9H day 1 31 word R...

Page 88: ...0306H mon 1 12 word R 0307H day 1 31 word R 0308H hour 0 23 word R 0309H min 0 59 word R 030AH sec 0 59 word R 030BH F_ min 0 7000 word R 030CH year 2000 2099 word R 030DH mon 1 12 word R 030EH day 1 31 word R 030FH hour 0 23 word R 0310H min 0 59 word R 0311H sec 0 59 word R 0312H Dmd_P_ min 32768 32767 integer R 0313H year 2000 2099 word R 0314H mon 1 12 word R 0315H day 1 31 word R 0316H hour 0...

Page 89: ...mon 1 12 word R 0323H day 1 31 word R 0324H hour 0 23 word R 0325H min 0 59 word R 0326H sec 0 59 word R Address Parameter Range Object Type Type of access 032AH yer 2000 2099 word R W 032BH mon 1 12 word R W 032CH day 1 31 word R W 032DH hou 0 23 word R W 032EH min 0 59 word R W 032FH sec 0 59 word R W Date and Time table Function code 03 for Reading 16 for Presetting Table 4 20 Max Min record ad...

Page 90: ... 2nd inequality with one of the 34 variables var2 Relation symbol selecting register INEQU_sign2 Limit value for 2nd inequality Ref2 Register associated 3rd inequality with one of the 34 variables var3 Bit0 8 corresponding to 1st 9th inequality 0 255 Bit0 8 corresponding to 1st 9th inequality 1 Yes 0 No Bit0 8 corresponding to 1st 9th inequality 1 Yes 0 No 0 34 0 low limit 1 up limit Related with ...

Page 91: ...gister associated 7th inequality with one of the 34 variables var7 Relation symbol selecting register INEQU_sign7 Limit value for 7th inequality Ref7 Register associated 8th inequality with one of the 34 variables var8 Relation symbol selecting register INEQU_sign8 Limit value for 8th inequality Ref8 0 low limit 1 up limit Related with variable 0 34 0 low limit 1 up limit Related with variable 0 3...

Page 92: ...t Alarm Record 32768 32767 Integer R 0357H Year of 1st Alarm Record 2000 2099 word R 0358H Month of 1st Alarm Record 1 12 word R 0359H Date of 1st Alarm Record 1 31 word R 035AH Hour of 1st Alarm Record 0 23 word R 035BH Minute of 1st Alarm Record 0 59 word R 035CH Second of 1st Alarm Record 0 59 word R 035DH Variable Number of the 2nd Alarm record 0 34 word R 035EH Variable Value of the 2nd Alarm...

Page 93: ...f 4th Alarm Record 1 31 word R 0372H Hour of 4th Alarm Record 0 23 word R 0373H Minute of 4th Alarm Record 0 59 word R 0374H Second of 4th Alarm Record 0 59 word R 0375H Variable Number of the 5th Alarm record 0 34 word R 0376H Variable Value of the 5th Alarm Record 32768 32767 Integer R 0377H Year of 5th Alarm Record 2000 2099 word R 0378H Month of 5th Alarm Record 1 12 word R 0379H Date of 5th A...

Page 94: ... word R 038EH Variable Value of the 8th Alarm Record 32768 32767 Integer R 038FH Year of 8th Alarm Record 2000 2099 word R 0390H Month of 8th Alarm Record 1 12 word R 0391H Date of 8th Alarm Record 1 31 word R 0392H Hour of 8th Alarm Record 0 23 word R 0393H Minute of 8th Alarm Record 0 59 word R 0394H Second of 8th Alarm Record 0 59 word R 0395H Variable Number of the 9th Alarm record 0 34 word R...

Page 95: ...ord R W 0103H Voltage Input Wiring Type 0 3LN 1 2LN 2 2LL word R W 0104H Current Input Wiring Type 0 3CT 1 1CT 2 2CT word R W 0105H PT1 High 16 bit 100 500000 Dword R W 0106H PT1 Low 16 bit 90 Addr Parameter Range Object Type Type of access 039DH Phase difference V1 V2 3 4 0 3600 Integer R 039EH Phase difference V1 V3 3 4 0 3600 Integer R 039FH Phase difference V1 I1 3 4 0 3600 Integer R 03A0H Pha...

Page 96: ... 010FH Relay1 Pulse Width 50 3000 word R W 0110H Relay2 Working Mode 0 Latch 1 Momentary word R W 0111H Relay2 Pulse Width 50 3000 word R W 0112H LCD Back light Time 0 120 word R W 0113H Demand Slid Window Time 1 30 word R W 0114H Max Min Clean 0ah word R W 91 Table 4 25 System parameter address Status Input DI Function code 03 for Reading 16 for Presetting Addr Parameter Range Object Type Type of...

Page 97: ...d by using function code 02 01 and 03 respectivly R W Read and Write Data is writen by using function code 16 and control command is writen by using function code 05 Writing to read only field is forbiden 3 Energy data is represented in 32 bit Both high 16 bit and low 16 bit have successive address alone The high 16 bit data should be multiplied by 65536 and plus low 16 bit data to get the energy ...

Page 98: ...Appendix Appendix A Technical data and specifications Appendix B Ordering 93 ...

Page 99: ...500Vac for 1 Sec None recurrence Voltage range through PT 500KV highest at primary side PT burden 0 2VA Measuring True RMS Current input Current rating 5Amp 5Amp AC nominal F S Ordering on input with 20 overrang special rating Current range 10000A highest at primary side Overload 10A for continue 100A for 1 Sec None recurrence CT burden 0 1VA Measuring True RMS 94 Appendix A Technical data and spe...

Page 100: ...e factor 1 0 0 1 Drift with temperature 100ppm Stability 0 5 year Standards Measuring IEC60687 0 5 ANSI C12 16 Class10 IEC61036 class1 IEC61268 class2 Environmental IEC 60068 2 Safety IEC 61557 2 EMC IEC61000 4 2 3 4 5 6 8 11 Dimension DIN43700 Digital Input DI Optical Isolation Isolate voltage 2500Vac rms Input form Contact with power supply Input Resistance 2K ohm typical Testing condition frequ...

Page 101: ... Current 50mA Relay Output Relay Output Form Mechanical Contact Contact Resistance 100m ohm 1A Initial Max Break Voltage 250Vac 30Vdc Max Break Current 3A Max Isolated Voltage 2500Vac rms Suitable Condition Dimensions mm 96x96x72 Cut Off 90x90 Protection Level IP54 Front IP20 Cover Weight 350 Temperature 25 70 10 70 LCD Display Humidity 5 95 Non condensing Power Supply 85 264Vac or 100V 300Vdc Pow...

Page 102: ... ORDERING Ai205 A 400Vac B 100Vac Option P0 0 P1 2 Pulse P2 Harmonic 2nd 31th P3 2 Pulse 2 Relay 4DI Harmonic 2nd 31th Input Current Input Voltage Typical Ordering Code for Option Acuvim 100 PRIO A 5A B 1A X1 X2 X3 ...

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