Ai205 - PT. HEN JAYA
Contents
1. Chapter 2 Installation L Appearance and Dimensions Installation Method Wiring of Ai205 Chapter 3 Basic Operation and Setup Display Panel and Keys wL Metering Data Reading lt Statistics Display L lL Meter Parameter Setting Introduction of Measurement and Functions of Ai205 Chapter 4 Communication mimi m tence KE EEE Introducing Modbus Protocol Format of the Communication L Address Table of Ai205 Pa Na Ja YA Ya PAA AA AA AI AA AA AAA AA AA AA AA Appendix A Technical Data and Spe2. The third screen voltage input wiring setting page Voltage input could be one of the three modes 3LN 2LN and 2LL refer to chapter 2 As in fig 3 36 the setting of voltage input mode is 3LN Press P or E to select from 3LN 2LN and 2LL Press V A key for acknowledgment and going to the next page Fig 3 36 Voltage input wiring 45 Fig 3 37 Current input wiring Fig 3 38 PT primary Fig 3 39 PT secondary The fourth screen Current input wiring setting page Current input wiring could be one of the three modes 3CT 2CT and 1CT Refer to chapter 2 As in fig 3 37 current input mode setting is 3CT Press P or E keys to select from 3CT 2CT and 1CT Press V A key for acknowledgment and going to the next setting page The fifth screen PT primary rating voltage PT1 setting page PT1 value is an 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 the next setting page 6 Note If there is no PT on the voltage input side of Ai205 the PT1 and PT2 should be the Fig 3 40 CT primary Fig 3 41 DO mode Fig 3 42 DO1 output item
3. 0396H 32766 32767 0397H 2000 2088 0308 2 03991 EI 039AH 0 23 0308H 0 69 039CH Second of 9 Alarm Record 70 59 Table 4 23 Alarming record address ObjectType word word word word word Integer word word word word word word word word word word word word word word Integer word word word word word word 89 NOULdWY Phase angle recording The phase differences between voltage or Current and U1 or U12 are recorded The phase differences are used to tell the phase sequence Function code 03 for reading 039DH Phase difference V1 V2 3 4 _ 0 3600 Integer R a Phase diference vivas 0 3600 Integer R aan Phase diference iran 0 3600 nteger R aap Phase diference Rana 073600 Integer RC 03MH Phase diference Vinia as4 0 3600 Integer R mn Phase difference Vi2IV23 383 0 3600 Integer R man Phase difference Va 0 3600 integer Ro maan Phase diference Viana 0 3600 integer _R Table 4 24 Phase angle table The ralation between record numerical data and physical data is Rx is numerical data Phase angle 0 Rx 10 Degree Ai205 Parameter Setting Function code 03 for Reading 16 for Presetting Adar Parameter Range Object Type Type of access word RW PT1 High 16 bit 100 500000 Dword PT1 Low 16 bit 0107H 0108H 0110H Relay2 Working Mode 0 Latch 1 Momentary word 0111H 0112H 10AH Energy Variable Number 0 0
4. 347H Relation symbol selecting register 10 lt low limit Integer 348H Limit value for 7 inequality Ref7 349H Register associated 8 inequality with 0 Integer mema Ti 34AH Relation symbol selecting register 0 lt low limit Integer 342H Limit value for 5 inequality Ref5 Related with variable Word or Integer 344H Relation symbol selecting register 10 lt low limit Integer INEQU_sign6 1 gt up limit INEQU_sign8 amp 1 gt up limit 34BHI Limit value for 8 inequality Ref8 Related with variable Word or Integer a i i 3 a 3 33 3 33 3 45 034CH Register associated 9 inequality with 0 34 L II 34DH Relation symbol selecting register 0 lt low limit 034EH Limit value for 9 inequality Ref9 Related with variable Word or Integer RAW Table 4 22 Alarming setting table Alarm Recording Function code 03 for Reading Addr Parameter Object Type of Type access 0354H Over limit Status of the 9 inequalities Bit0 8 corresponding to 1 9th inequality In 0 No 1 Yes teger ord d 0355 0356 357 358 359 35A 35B 35C 35D 35E 35F 360 0361 0362 0363 0364 L Variable Number ofthe 1 Alarm record 10 34 Year of Alarm Record 2000 2099 cri a o aE Month of 1 Alarm Record word Date of 1 Alarm Record o Jc o Jo ac lL o ac word o olololo E ael e ea Ea ndl a e SE Parameter Range Type of access Variable Number of the 3 Alar
5. se os wo o F min oo o R ya 020 woa H rime Stamp mon 2 wa R ay mojom R pour Ts wa OR mn os wo R prad P mn 82768 82767 integer R year 2000 2099 word R Time Stamp mon a f woa R pem o C oR P or os wed Ro O lO lO l Ol Cl O lO lO lC CG JIII ININ O OOo TN 1 1216 nm SIE T ar olo GQ lG olo oil amp LIL of F_min NOHLIWY 0317H 0 59 word 0318H 0 59 0319H 32768 32767 031AH year 2000 2099 031BH Time Stamp m d AR N mon 031CH of gt in 1 031DH Dmd A min 0723 OSH 0 59 031FH sec 59 0320H 0 65535 0321H 2000 2099 0322H Time Stamp 0323H 31 min Sec N of 0324H 2 word sm our 0 23 word 0325H min os 0326H sec 0 Table 4 20 Max Min record address l O1 li Date and Time table Function code 03 for Reading 16 for Presetting Object Type Type of access 032AH 2000 2099 032BH Table 4 21 Date and time address Alarm Parameter Register Setting Function code 03 for Reading 16 for Presetting 330H 9 condition inequalities enable Registers 331H Time limit Register Register associated DO1 with inequalities AssociatedDO1 H Register associated DO2 with inequalities AssociatedDO2 o oO 0334H Register associated 1 inequality 0 34 Integer wanene waaswa T 335H Relation symbol selecting register 0 lt low limit Integer eGA sgn taupe O st 3 3 3 336H L
6. R W IW AMPTRON Power Quality Measurements Function code 03 Parameter Relationship Unit Energy Ep_imp Ep_exp Ep_total Ep_net Ep Rx 10 Kwh Reactive Energy Eq_imp Eq_exp Eq_total Eq_net Eq Rx 10 Table 4 17 Energy data converting table Power Quality Measurements Function code 03 Address Parameter Range _ Object Type of 0168 0169H 10000 O16AH 710000 0768H 10000 O16CH 10000 O16DH 10000 O16EH 10000 10000 word word 018DH Harmonic Content of V1 or V12 2nd to 31st 0 10000 word O1AFH Harmonic Content of V2 or V23 2nd to 31st 0 10000 01BOH Total Odd Harmonic Distortion of V2 or V23 0 10000 p o 1B2H Crest factor of V2 or V23 0 65535 word 01B4H 1D1H Harmonic Content of V3 or V31 27 to 31 0000 0 1D2H Total Odd Harmonic Distortion of V3 or V31 0 10000 1D3H Total Even Harmonic Distortion of V3 or V31 0 10000 W W 1B1H Total Even Harmonic Distortion of V2 or V23 0 10000 0 o o LU L o F o 3 gt o D Q o o h lt N o lt N W ac TI TI EE o 0 01D6H O1F3H Harmonic Content of 11 2 to 319 0 10000 word 1F4H Total Odd Harmonic Distortion of 11 0 10000 1F5H Total Even Harmonic Distortion of 17 0 10000 1F6H K Factor of 11 0 65535 01F7H 0214H Harmonic Content of 12 2 to 315 0 10000 word 215H Total Odd Harmonic Distortion of 12 0 100
7. humidity 35 voltage supply 230Vac Resolution 0 1 01 0 1 0 1 0 1 0 1 001Hz 0 TKwh Rei 0 01 1 0 0 1 100ppm 0 5 o year IEC60687 0 5 ANSI C12 16 Class10 IEC61036 class1 1IEC61268 class2 JEC 60068 2 IEC 61557 2 IEC61000 4 2 3 4 5 6 8 11 DIN43700 Isolate voltage 2500Vac rms Contact with power supply 2K ohm typical NOHLIWY Input voltage range 5 30Vdc Close voltage gt 10Vdc AMPTRON Max input current 20mA DI Aux Power 15Vdc 100mA Digital Output DO Output Form Photo Mos NO Optical Isolation 2500Vac rms Max Positive Voltage 100Vdc Max Positive Current 50mA AAA 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 25C 70C 10C 70C LCD Display Humidity 5 95 Non condensing Power Supply 85 264Vac or 100V 300Vdc Power 3W Max 230V Ai205 X1 Appendix B ORDERING X2 X3 PO 0 Option P1 2 Pulse P2 Harmonic 29 31 P3 2 Pulse 2 Relay 4DI Harmonic 2 31 Input Voltage A 400Vac B 100Vac Input Current A DA B 1A 97 NOULIWY
8. same and equal to the input rating voltage The seventh screen CT primary rating current CT1 setting page CT1 value is an integer from 5 to 10000 The unit is Amp As in fig 3 40 CT1 5A pressing P E and H keys to change the value Press V A key for acknowledgment and going to the next setting page The eighth screen Digital output mode setting 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 DO ee ipa be one of the following 8 Table3 2 DO1 output item Fig 3 43 DO2 output item Fig 3 44 Pulse width Fig 3 45 Pulse rate The tenth screen DO2 output item selecting The DO2 output can be one of the 8 energy items as in Table3 2 The eleventh screen The DO pulse width setting The DO pulse width is integer 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 The thirteenth screen Relay1 mode setting page There are two relay output in Ai205 There are two relay output modes for selection one is latching the other is momentary For the
9. 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 window slid once per Minute As in fig 3 51 the sliding window time is 15 Minute Note There are not eighteenth screen to twenty first screen in Ai205 P0 and P1 The nineteenth screen Clearance of the Max and Min value The Max and Min statistics value can be cleared by operating the front keys Clear means to begin record new Max and Min statistics value As in fig 3 52 press E or P keys to select Yes or No Yes Clear the Max and Min statistics value and min value No Do not clear the Max and Min statistics 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 Fig 3 53 Date The twenty first screen system time setting 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 13 20 29 Fig 3 54 Time Press V A key go to next setting page AMPTRON The twenty second screen Access code setting page It is the eighteenth screen in Ai205 This is the last screen of the se
10. 0109H DO type 0 Pulse Output 1 Alarm Output word 10BH Energy Variable Number associated with DO2 word 010CH Pulse Width 010DH 6000 010EH Relay1 Working Mode 0 Latch 1 Momentary word 010FH Relay1 Pulse Width 50 3000 100 400 5 10000 1 associated with DO1 1250 Relay2 Pulse Width 50 3000 LCD Back light Time 0 120 E EE Be T 0113H Demand Slid Window Time 1 30 word R W 0114H Max Min Clean 0 word R W Table 4 25 System parameter address Status Input DI Funct ion code 03 for Reading 16 for Presetting Object Type Type of access 1 ON 0 OFF 1 ON 0 OFF 1 ON 0 OFF 1 ON 0 OFF Table 4 26 Digital input DI address 91 NOU LW Relay Statue and Control Function code 01 for Reading 05 for Controlling AMPTRON 0000H Relayt 1 0N 0 OFF 0001H Relay2 1 0N 0 OFF Table 4 27 Relay address 1 Object type Bit binary bit word unsign integer of 16 bit Integer Sign integer of 16 bit Dword ungign integer of 32 bit 2 Type of Access R Read only Digital input Relay statue and Data are read 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 d
11. and press E for decreasing Press V A for acknowledgment and going to the next setting item page Press H and V A page keys simultaneously to exit in any setting item page Access code needed for going 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 Fig 3 33 access code page As in fig 3 33 is access code page The first screen setting Ai205 address page for the communication purpose It is any digit number from 1 to 247 As in fig 3 34 the Ai205 Address is 17 Changing method is simple press H to move the curser to the digit wanted press P for increasing and press E for decreasing Press V A for the acknowledgment Note Each meter on same RS485 net should have Fig 3 34 Address setting page different address according to the Modbus RTU protocol The second screen Baud rate setting page The asynchronies 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 Fig 3 35 Baud rate setting page the next page
12. over limit value and time will be recorded and the maximum number of records is 9 The digital output DO can be used as light or sound alarming trigger There can be maximum 9 inequations related to the over limit alarming Any satisfaction of the inequations will trigger the over limit alarming Any one of the 9 equations can be assigned to one of the digital output DO An example is given in the following to describe how the first inequation is being set and determined Start Enable inequation Var1 Parameter Ref1 Value Limit_t time Setting inequality_sign Setting associatedDO If Var1 inequality Ref1 True and Last time gt Limit t Then record envent Output associatedDO end 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 gt or lt Select the related digital output DO Determine if the parameter is over the limit and over the time limit If itis true then Record the value date and time Setting the related Digital output DO Finish The related registers should be preset in order to finish the above process The registers are preset through communication to 9 ineguation Bit n 0 forbid the nth ineguation Bit n 1 enable the nth inequation The 9 variables var1 to var9 can be any of the 34 parameters Ineguation enable register register EN_INEQU bitO
13. 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 19 Total energy The fourth screen Display algebraic sum of imp and exp energy Ep net As in fig 3 20 Ep_net 8 8Kwh Press E key go to the fifth screen Fig 3 20 Net energy The fifth screen Display inductive reactive energy Eq_imp As in fig 3 21 Eq_imp 15 2Kvarh Press E key go to the sixth screen Fig 3 21 Inducfive reactive energy The sixth screen Display the capacitive reactive energy Eq_exp As in fig 3 22 Eg exp 0 0Kvarh Press E key go to the seventh screen Fig 3 22 Capacitive reactive energy The seventh screen display absolute sum of the reactive energy Eg total As in fig 3 22 Eq_total 15 2Kvarh Press E key go to the eighth screen Fig 3 23 Total reactive energy The eighth screen Display algebraic sum of reactive energy As in fig 3 24 Eg net 15 2Kvarh Press E key go to the ninth screen Fig 3 24 Net reactive energy 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 Fig 3 25 Date The tenth screen Display time Format hh mm ss As in fig 3 26 the time is 13 20 29 Press E key go back to the first screen Fig 3 26 Time Press P and V A Keys simultaneously the Max and Min value of metering data will display o
14. 00 2000 2099 l N 31 0 o o gt l Lll i d G l OT N N GO l cola 32768 32767 2000 2099 0 23 T 01 co i O1 co 32768 32767 2000 2099 word word word word word word integer word word word word word word word word word word word word word integer word word word word word word integer word NOHLIWY E Time Stamp day 31 of hour 0 23 min 0 59 sec 0 59 Dmd S max 0 65535 year 2000 2099 Time Stamp mon 2 day 31 02ADH Dmd_S_max hour 0 23 02AEH min 0 02AFH sec 0 59 Min Record 02BOH 0 65535 02B1H year 2000 2099 02B2H Time Stamp mon 02B3H of V1 min day 31 02B4H hour 0 23 02B5H min 0 02B6H sec 02B7H 0 65535 02B8H year 2000 2099 02B9H mon 02BAH of v2_min gay aul 02BBH hour 0 23 02BCH min 0 59 02BDH sec 02BE V3_ min 0 65535 02BF year 2000 2099 mon EN l Ol co o A gt l Ol O1 gt OO Oo N N Time Stamp o l Ol co aE L 02C0H 02C1H 02C2H 02C3H 02C4H 02C5H 02C6H 02C7H 02C8H 02C9H 02CAH 02CBH 02CCH 02CDH 02CEH 02CFH 02D0H 02D1H 02D2H 02D3H 02D4H 02D5H 02D6H 02D7H 02D8H 02D9H 02DAH 02DBH 02DCH Time Stamp of V3_min 3 V12 min OENES LLL 1 NIOJ gt Wj N Time Stamp of V12_min n V23_ min Time Stamp of V23 min 3 V31_ min year Time Stamp mon of V31_min day hour min sec gt year mon mh mh
15. 00 216H Total Even Harmonic Distortion of 12 0 10000 O O o O O O o 217H K Factor of 12 0 65535 0218H 0235H Harmonic Content of 13 2 to 31 0 10000 word 236H Total Odd Harmonic Distortion of 13 0 10000 237H Total Even Harmonic Distortion of 13 0 10000 word 238H K Factor of 13 0 65535 The Relationship between numerical value in register of Ai205 and the physical value is as following table Rx is the numerical value inregister of Ai205 Relationship THD THD Rx 10000 x 100 1 1 1D4H Crest factor of V3 or V31 0 65535 o o Harmonic Content HDn Rx 10000 x 100 NOU LIW Odd THD HDo Rx 10000 x 100 HDe Rx 10000 x 100 CF Rx 1000 KF Rx 10 THFF THFF Rx 10000 x 100 Table 4 19 Power quality data convert table Max Min Statistics Value with Time Stamps Function code 03 Address Range 0230H OZ3AF 023BH mon 1 12 fwa R 0230H Pay at word R 0230 hour 0 25 wa R aen VU mn 0 69 work JR O23FH km k oao 2 mar 068686 word R 0241H 2002008 wra R 02427 on wore 0243H ra we R 0244H ozs we R 0245H n oso wa R 0246H os wa R oam vema oes word ROO O cas ae oe 2000 2099 word fR 0249H 024AH 024BH 024CH n O1 i 0 0 65535 2000 2099 1 31 0 o O V12 max o o So N o T 0 V23 max 0 65535 year 2000 2099 Time mn 112 word R Stamp Ody ia wa R hur 023 w
16. 05 can be easily used Ai205 series The Ai205 series have two kinds of product the standard Ai205 and the advanced Ai205 Both these two products have multiple choice of 1 0 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 Table 1 2 Comparison of Ai205 T uu AA ST ooo o jk en d a NEL ANI IA p o jj PT LA mm O O O o Po WALIA Apparent Power 5152 53 5sum y EE Reactive Energy Eg imp Eg exp Eg total Eg net AMPTRON_ FUNCTION Parameter PO P1 P2 P3_ Voltage THD THD_V1 THD_V2 V V V y a Current THD THD 11 THD 12 CC eee Harmonics Harmonics 2Yto3 VI VI Voltage Crest Factor Crest Factor VA VA ie Ghee T ee Current K factor kK Factor vv pesmim Pe Ee WA rs ee ee H Ce as o oo a iis LP POWER QUALITY MONITORING STATIS TICS Pulse Output ALARM Over Under Limit Alarm OMMIRS485 Port Modbus Protocol TIME Real Time Clock Year Month date Hour minute Second Note 1 There are two DIs in the basic Module of Ai205 The Option module can provide additional 2 Dis DI Auxilary Power 2 DOs and 2 Relay Outputs 2 The 2 DOs may be used as Alarm or Pulse output PTE f Chapter 2 Installation V L Appearance and Dimensions Installation method Wiring of Ai205 AMPTRON The installation method is introduced in thi
17. 22 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 Chapter 3 Meter Operation and Parameter Settin Display panel and keys Metering data reading Statistics display Meter parameter setting Introduction of measurement and functions of Ai205 29 Detail man machine interface will be discripted in this chapter This includes how to get the electric metering data and how to do the parameter setting Display panel and keys There are one display panel and four keys in the front of Ai205 All the display segments are illustrated in fig 3 1 Fig 3 1 All Display Segments Four lines of letter in the Display metering data metering area Voltage current power power factor frequency THD demand unbalance factor max min etc 2 One line of letter Fin the Energy data display or real time clock energy display area 3 Load rating C Display load current percentage Table 3 1 Display Panel discription Item label Item label Letter MAX MIN U voltage I current P power q reactive power S Demand PF and F apparent power PF power factor F frequency MAX Maximum value MIN minimum Value Demand Demand value Avg average value with N nutrual
18. A master addresses a slave by placing the slave address in the address field of the message When the slave sends its response it places its own address in this address field of the response to let the master know which slave is responding 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 Jaon O ooo Read Relay output Status Obtain current status of Relay Output Read Digital Input DI Status Obtain current status of Digital Input 0 Read Data Obtain current binary value in one NES ee Pe 1 2 3 5 Control Relay Output Force Relay to a state of on or off 16 Preset Multiple Registers Place specific binary values into a series of consecutive Multiple Registers Table4 2 Function Code Data Field The data field is constructed using sets of two hexadecimal digits in the range of 00 to FF hexadecimal The data field of messages sent from a master to slave devices contains additional information which the slave must use to take the action defined by the function code This can include items like discrete and register addresses the quantity of items to be handled and the count of actual data bytes in the field For example if the master requests a slave to read a group of holding registers function code 03 the da
19. User s Manual Multifunction Power Meter CopyRight 2002 20042 V2 0 This manual may not be reproduced in whole or in part by mimeogyaph or any other means without permission 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 AMPTRON Please read this manual carefuly before doing installation operation and mantenance of Ai205 Following symbols are used in this user s manual and on meter to alert the dangerous or to prompt in the operating or setting process Dangerous symbol Failure to observe the information may re sult in injury or death fs Alert symbol Alert the potential dangerous Observ the information after the symbol to avoid possible in jury or death Installation and maintenance of the Ai205 meter should only be performed by qualified competent personnel that have appropriate training and experience with high voltage and current device Content T Chapter 1 Introduction L The Purpose of Ai205 w The Application Area of Ai205
20. VA and Ssum 0 749KVA Press P go to the fourth screen 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 9 Three phase PF The fifth screen system total power Psum system total reactive power Qsum system total apparent power and system average power factor As in fig 3 10 Psum 0 375 Qsum 0 649K var Ssum 0 749 and PF 0 500 Press P go to the sixth screen Fig 3 10 System power and power factor The sixth screen system total power Psum 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 Fig 3 11 System power and frequency The seventh screen display three phase system power demand power demand Dmd P reactive power demand Dmd_Q and apparent Dmd S As in fig 3 12 Dmd_P 0 375KW Dmd 0 0 649Kvar Dmd_S 0 749KVA Fig 3 12 System power demand Press P go back to the first screen Note There is not phase power to be display when the wiring of voltage setting is 2LL Press H display 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 T
21. ata to get the energy data in master software The unit is 0 1kwh or 0 1kvarh It will be clear to zero and start again when energy data accumulat to 1x10 kwh kvarh The energy register can be cleared or preset through communication 4 Appendix Appendix A Technical data and specifications Appendix B Ordering 93 AMPTRON Appendix A Technical data and specifications Input Ratings for 3 phase 2 phase and single phase Voltage rating 100V option 100Vac nominal F S input Vin with 20 overrang 3LN or 2LN 100Vac nominal F S input VLL with 20 overrang 2LL 400V option 400Vac nominal F S inpu VLL with 20 overrang Frequency range 45 65Hz Overload 2 times for continue 2500Vac for 1 Sec None recurrence Voltage range through PT 500KV highest at primary side PT burden lt 0 2VA Measuring True RMS Current input Current rating 5Amp 5Amp AC nominal F S Ordering on input with 20 overrang special rating Overload 10A for continue 100A for 1 Sec None recurrence CT burden lt 0 1VA Measuring True RMS Accuracy and resolution Parameter Voltage Current Power Reactive power Apparent power Power factor Frequency Energy Reactive energy Harmonics Unbalance factor Drift with temperature Stability Standards Measuring Environmental Safety EMC Dimension Digital Input DI Optical Isolation Input form Input Resistance Testing condition frequency 50Hz or 60Hz temperature 20C
22. ay that exists within the Ai205 can be forced to be either status on or off The address of Relays starts at OOOOH Relay1 0000H Relay2 0001H The data value FFOOH will set the Relay on and the value OOOOH will turn it off all other values are illegal and will not affect that relay The example below is a request to the Ai205 number 17 to turn on Relay Addr Fun DO addr DO addr Value Value CRC16 CRC16 hi Lo Hi lo hi i 11H 05H oom Joh FFH 004 8EH Table4 10 Control Relay Query Message Response The normal response to the command request is to retransmit the message as received after the Relay status has been altered Addr Fun Relay address Relay address Value Value CRC CRC high Low High low high low 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 example below is a request to an Ai205 number 17 to Preset Ep_imp 17807783 3KWH while its Hex Value OA9D4089H Ep imp data address is 0156H and 0157H 69 AMPTRON Data start register high 56H 00H 02H 04H OAH 9DH 40H 89H 4DH BIH 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 nu
23. bit8 corresponding to 1 Z Yana 0 2 4 5 6 7 8 varnumber o 0 n 2 19 14 15 16 a7 Varnumber 18 19 20 21 22 23 2 25 26 Vernenter zr ea a O za Var name PF2 PF3 PF U_unbi Lunbi Dma P Dmd G Dmds Table 3 3 parameter name and number Limit setting register register Ref1 to Ref9 The setting of the Ref register should be the up limit or the low limit of the parameter The range of the parameter limit is related to the format of the register Time limit setting register register Limit_t Limit tis 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 lt the low limit INEQU_Sign 1 select gt the up limit The DO select register AssociatedDO1 register bit0 bit8 correspond to the first to ninth ineguation Bit n 0 DO1 do not associate with the nth inequation Bit n 0 DO1 associate with the nth inequation AssociatedDO2 register bitO bit8 correspond to the first to ninth inequation Bit n 0 DO2 do not associate with the nth inequation Bit n 0 DO2 associate with the nth inequation AMPTRON Example If current 11 goes over the up limit and time limit 15 Seconds trigge
24. cification ee e eee eee eee CEE men tenses eee E eens Appendix B Ordenng eee eee eee eee ee CE EEE EEE Starting AMPTRON Congratulations You have got an advanced Versitil multifunction power meter You may call it a Remote terminal unit RTU It will benifit your power system When you open the package you will find the following items 1 Ai205 meter 1 2 14Pin terminal 1 another for option 3 Installation clips 4 4 User s operation mannual 1 Please read this manual 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 Ai205 Chapter 4 gives the communiaction address table of Ai205 Appendix lists the technical data and specifications of Ai205 and ordering information f Chapter 1 Introduction Wa a The purpose of Ai205 The Application Area of Ai205 The Function of Ai205 Ai205 Series AMPTRON The Purpose of Ai205 Powerful Intelligent Power Meter Ai205 Series Intelligent power meter was designed by used of latest microprocessor and digital signal process technology Electric power parameters energy and demands metering power quality monitoring re
25. current PF F Avg and N indicate the fourth line data 5 Three phase i With letter U voltage unbalance factor Load nature Capacitor label capacitive load Inductor inductive load Energy label imp consumption energy exp generating energy total absolute sum of imp and exp energy net algebraic sum Communication indicator No label no communication mi One label inguiry K Two labels inquiry and answer Energy pulse No label no pulse output Digital input indicator 7 11 i L Time display in energy area Indicate data unit a Kvar He Voltage V KV Current A Power KW and MW Reactive Power Kvar and Mvar Apparent Power KVA MWA rar and MVA Freguency Hz Energy Kwh Reactive Power Kvarh Percentage M RUS There are four delicacy keys labeled as H P E and V A Use these four keys to read metering data and do parameter setting 32 Normally Ai205 display the metering data such as voltage current power etc To read the metering data simply press the keys H P E and V A Press V A to read voltage and 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 Fig 3 2 Three phase voltage Press V A go to the second screen The second screen dis
26. he 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 As in fig 3 13 THD of three phase voltage THD_U12 0 68 THD_U23 0 68 THD_U31 0 68 THD_UII 0 68 Fig 3 13 THD of line voltage 36 Fig 3 14 THD of phase voltage Fig 3 15 THD of line corrent Fig 3 16 Unbalance factor As in fig 3 14 when the wiring of the voltage is set to be 2LN or 3LN The display will be THD of phase voltage THD_U1 0 68 THD_U2 0 68 THD_U3 0 68 and THD_UIn 0 68 Press H key go to the second screen The second screen display THD of phase current THD 11 THD 12 THD_I3 and THD of average current THD_lavg As in fig 3 15 THD of three phase voltage THD_11 0 68 THD_I2 0 68 THD 13 0 68 THD_lavg 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 38 Press E key display energy and real time clock The first screen display the consumption energy Ep_imp 8 8Kwh Press E key go to the second screen Fig 3 17 Import energy The second screen Display the generation energy Eq_exp 0 0 As in fig 3 18 Ep_exp 0 0Kwh Press E key go to the third screen Fig 3 18 Export energy The
27. hree phase voltage unbalance factor and three phase current unbalance factor can be measured in Ai205 P2 or P3 The unbalance factor is express in percentage The Max different value of three voltages Voltage unbalance factor Average value of three voltages The Max different value of the three currents Current unbalance factor Average value of three currents Max Min statistics The maximum and minimum value of the metering data is stored in unvaluntable RAM and can be accessed or cleared from front panel or through communication in Ai205 P2 or P3 These metering data is phase voltage line to line voltage current power reactive power apparent power power factor frequency 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 360 When the wiring of voltage input is set to be 2LL it gives the phase difference U23 i1 i2 and 12 relative to U12 When the wiring of voltage input is set to be 2LN and 3LN it gives the phase difference U2 U3 i1 i2 i3 relative to U1 DD j 56 Over limit alarming In Ai205 P2 or P3 when the metering data is over the pre setting limit and over presetting period of time the over limit alarming will be picked up The
28. i205 response includes the Ai205 address function code quantity of data characters the data characters and error checking An example response to read the status of 4 Dis is shown as Table4 7 The status of each is responding to the last 4 bit of the data 67 DI1 bitO DI2 biti DI3 bit2 DI4 bit3 Table 4 7 Read Status of DI The content of the data is AMPTRON 78 5 4 Ts 2 1 J oj of OF oO lo jo 1 1 MSB LSB DI1 On DI2 On DI3 Off DI4 Off 3 Read Data Function Code 03 Query This function allows the master to obtain the measurement results of Ai205 Table4 8 is an example to read the 3 measured data F V1 and V2 from slave device number 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 H 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 50 00Hz V1 03E7H 99 9V V2 03E9H 100 1V is shown as Table4 9 Addr Fun Byte Data1 Data1 Data 2 Data2 Data3 Data3 CRC16 CRC16 count hi Lo hi lo hi lo hi lo 11H 03H Josh 13H 88H 03H 03H E9H 7FH__ 04H Table4 9 Read F V1 and V2 Message 4 Control Relay Function Code 05 Query This message forces a single Relay either on or off Any Rel
29. imit value for 1 inequality Ref1 Related with variable Word or ee 337H Register associated 2 inequality 0 34 Integer noname ve 338H Relation symbol selecting register 0 lt low limit Integer Bav a tapi IA 4 339H Limit value for 2 inequality Ref2 Related with variable Word or Integer 033AH Register associated 3 inequality with one of the 34 variables var3 Parameter Range Object Type of Type access Bit0 8 corresponding Integer to 1st 9th ineguality 0 255 BitO 8 corresponding Integer to 1st 9th inequality 1 Yes 0 No Bit0 8 corresponding Integer to 1st 9th ineguality 1 Yes 0 No 3444 i H l NOHLIWY 33BH Relation symbol selecting 0 lt low limit Integer register INEQU_sign3 ann aa 33CH Limit value for 3 inequality Ref3 33DH Register associated 4 inequality with 0 Integer ame aba 33EH Relation symbol selecting register 0 lt low limit Integer KS opie 34 33FH Limit value for 4 inequality Ref4 Related with variable Word or Integer 340H Register associated 5 ineguality 0 34 Integer with one of the 34 variables var5 341H Relation symbol selecting register 0 lt low limit Integer INEQU_sign5 1 gt up limit 343H Register associated 6 inequality with 0 34 Integer one of the 34 variables var6 i 34 34 E o 345H Limit value for 6 S o inequality Ref 346H Register associated 7 inequality with O Integer S OM fe
30. inputs are 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 Foye Fig 2 27 Digital Input Circuit of A 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 m A DI auxiliary power supply optional is provided for the convenient of the factory field used The voltage of the DI auxiliary power supply is 15Vdc 1W The wiring terminals are V and V 29 30 This power supply can not be used for other purpose The 4 Dls with auxiliary power supply is drawing as in fig 2 28 AMPTRON Fig 2 28 Digital Input with Auxiliary Power The wire of digital input should be chose between AWG22 0 5mm7 AWG16 1 5mm 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 in the output circuit as in fig 2 29 iriereed oi Hama i Bo 0 i J i Control Output I Fig 2 29 Relay output There are two relay output modes for selection one is latching and the other is m
31. latching mode the relay can be used to output two statues on or off For the momentary mode the output of Fig 3 46 Relay1 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 Fig 3 47 Relay1 closing time The fifteenth screen Relay2 mode setting page The setting method is the same as that of relay1 As in fig 3 48 Relay2 is set momentary mode Fig 3 48 Relay2 mode 50 Fig 3 49 Relay2 closing time Fig 3 50 Back light on time Fig 3 51 Sliding window time The sixteenth screen Relay2 closing time setting The setting method is the same as that of relay1 As in fig 3 49 the closing time Ton of relay1 is 50ms Note If the relay mode is set to be latching the setting of relay closing time Ton do not has any interference on the relay state The seventeenth screen Display back light on time setting page The backlight will go to off for the purpose of energy saving and component duration if the key does 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
32. led on the panel of switch gear 1 Cut a square hole on the panel of the switch gear The cutting size is as fig 2 3 Unit mm o 5 oo SO Panel Fig 2 3 Panel Cutting 2 Remove the clips from the meter and insert the meter into the sguare hole from the front side Panel Fig 2 4 Put the meter into the sguare 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 Panel _ Fig 2 5 Use the clips to fasten the meter on the panel Space required for Installation The space around the meter should be large enough so that the meter removing terminal 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 Wa Panel s Panel Fig 2 6 Space around the meter Environment Temperature Table 2 2 Minimum Space Terminal Strips There are three terminal strips on the back of Ai205 Voltage amp Current Input Terminal Strip Auxiliary Terminal Strip and Extend Terminal 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 Voltage amp Current Input Terminal Strip B EB EB KB GHEH C9 EB AD RE FATADE MPUTA Oo oo ARRS AA m Ww hn e E L UA H Auxiliary Terminal Stri
33. m record 0 34 Variable Value of the 3 Alarm Record 32768 32767 Year of 3 Alarm Record 2000 2099 0368H Month of 3 Alarm Record 1 12 0369H Date of 3 Alarm Record 131 036AH Hour of 3 Alarm Record 0 23 036BH Minute of 3 Alarm Record 0 59 036CH Second of 3 Alarm Record 0 59 036DH Variable Number of the 4 Alarm record 0 34 036EH Variable Value of the 4 Alarm Record 32768 32767 036FH Year of 4 Alarm Record 2000 2099 0370H Month of 4 Alarm Record 1 12 0371H Date of 4 Alarm Record 1 31 Hour of 4 Alarm Record 0 23 Minute of 4 Alarm Record 0559 Second of 4 Alarm Record 0 59 Variable Number of the 5 Alarm record 0 34 03761 32768 32767 0377H Year of 5 Alarm Record 2000 2099 0378H Month of 5 Alarm Record 1 12 0379H Date of 5 Alarm Record 1 31 037AH Hour of 5 Alarm Record 0 23 037BH Minute of 5 Alarm Record 0 59 037CH Second of 5 Alarm Record 0 59 037DH Variable Number of the 6 Alarm record 0 34 VSEM T OB7FH Year of Alarm Record 2000 200 0380H Month or Sih Alarm Record Parameter Range Date of 6 Alarm Record 1 31 Hour of 6 Alarm Record 0 23 0383H Minute of 6 Alarm Record 0 59 0384H 0758 0385H 0 34 0386 32768 32767 0387H 2000 2009 0388H EE 0389 5 O38AH 0 28 0385H 0 59 038CH Second of Alarm Record TS 036DH Variable Number of the 8 Alarm record 0234 mez 32768 32767 036FH 2000 2099 0390H 112 0301 3 0302H 0 23 0303 0 59 0304 0 59 0395H 0 34
34. mber of registers and error checking Data start address high Data start address low 56H 00H 02H A2H B4H Table4 13 Preset Multi Registers Response Message Data address table The measured data in shadow only exists in Ai205 P2 or P3 Basic Analog measurements Function code 03 0130H JE 0132H 0133H 0134 0135H Line Voltage V12 0136 0137 0138 JE 055 O13BH O130H OT3DH DISER ET OT40H O integer 0142H Integer 0143H 0144H Phase Reactive Power Q3 LI TI T Address 0130H 0131H 0132H 0133H 0135H 0136H 0137H 0138H 0139H O13AH O13BH O13CH O13DH OT3EH O13FH 0140H 0141H 0142H 0143H 0144H NOHLIWY 0145H System Reactive Power Asum 32768 32767 Integer R 0146H Phase Apparent PowerS1 065535 word R 0147H Phase Apparent PowerS2 0 65535 word R 0148H Phase Apparent PowerS3 065535 word R 0149H System Apparent Power Ssum 0 65535 word R 014AH Phase Power Factor PF1 1000 1000 Integer R 014BH Phase Power FactorPF2 l 1000 1000 Integer R 014CH Phase Power Factor PF3 1000 1000 Integer R 014DH System Power Factor 1000 1000 Integer R 014EH Voltage Unbalance Factor U unbl 03000 wora R O14FH Current Unbalance Factor I unbl 0 3000 wod R 0150H Load Type RT LICIR 766782 word R 0151H P
35. mmunication are A B and S 11 12 13 Ais 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 twisted pair cable AWG22 0 5mm2 or larger The overall length of the RS485 cable connecting all devices can not exceed 1200m 4000ft Ai205 is used as a slave device of master like PC PLC data collector or RTU 26 If the master does not have RS485 communication port a converter has to be used Normally a RS232 RS485 or USB RS485 is adopted The topology of RS485 net can be line circle and star 1 Line The connection from master to Ai205 meter is one by one in the RS485 net as in fig 2 32 Ki Resistor s EK K Master Converter PC Fig 2 32 Line mode 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 232 485 O Converter Fig 2 33 Circle mode l 3 Star The connection of RS485 net is in Wye mode Anti signal reflecting resistor may be needed in each line 232 485 Converter Fig 2 34 Star mode The recommendations for the high quality communication Good quality shielded twisted pair of cable AWG
36. mote control over range alarming statistics and records all these functions are only in one pocket size unit There are also alarm on over under Voltage Current Power Power Factor Frequency Unbalance Factors or Demands and Pulse Output based on Energy or Reactive Energy in Ai205 Switch status monitoring is possible by using the 4 digit inputs It combines high accuracy measurement 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 ina SCADA system All the measured data is available via digital RS485 communication ports running the Mobus protocol Energy Management Ai205 can measure double directions four quadrants Kwh and Kvarh with accuracy up to 0 5 It can provide high standard energy data and energy demand data All these data is important for statistics of each line feeder and total Remote Power Control The main function of Ai205 is measurement but it has also got some flexible I O functions This made the meter can be used as distributed RTU metering Zeno remote controlling in one unit Power Guality Analysis With the powerful digital signal processing ability the Ai205 intelligent power meter can be used as an online power quality analysis instrument It can simultaneously and continuously give out the analysis result
37. mportant factor to scale the influence to the system insulation The expression is as following In the expression U1 is the RMS of fundamental and Uh is the RMS of the h harmonic Lh CF 1 4145 h L E l E E The function of Crest factor only exists in Ai205 P2 or P3 Total harmonic distortion This factor is often used to express the power quality of the electric power system The expression is as following ETN THD pits i IG u X 10 In the expression U1 is the RMS of fundamental and Uh is the RMS of the h harmonic This function exists in Ai205 HRUR x 100 Each harmonic rate The percentage of each harmonic divided by fundamental d l ARIA F x 100 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 RE Papy hx Pp Lh Y HEE Ja ee ee L RUU LOO C1 8 In the expression the Uh is the voltage of the ht harmonic and the Ph is coefficient which is defined by CCITT committee The function of the THFF exists in Ai205 K factor This is an important factor to scale the power quality of current x LO a Ya x Fn K factor Fay In the expression the Fn Is the RMS ot the nth harmonic Three phase unbalance factor t
38. n the screen The time stamp can be access through communication Press the P and V A keys simultaneously go to the statistics screen The first screen Display the Max value of voltage The Max label display on up right of letter U As in fig 3 27 U1_max 100 3V U2_max 100 1 and U3_max 100 2V 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 U Press P key again go back to display the Max value of voltage 41 As in fig 3 28 U1_min 0 0V U2_min 0 0V and U3_min 0 0V Press V A key go to the next screen The second screen Display the Max and Min value of line to line voltage Fig 3 28 Min phase voltage The third screen Display the Max and Min value of Current The fourth screen Display the Max and Min value of power and power factor The fifth screen Display the Max and Min value of Demand and frequency The second screen Max value of the line to line voltage As in fig 3 29 U12_max 173 2V U23 max 173 3V and V31_max 173 1V Press P key to change display from Max to Min and vice versa Fig 3 29 Max line voltage Press V A key go to the next screen The third screen Max value of the current As in fig 3 30 1 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 Fig 3 30 Max Current 42 Press V A key go to the next screen Fig 3 31 Max value of sy
39. nput wiring mode Fig 2 15 3CT b 2CT The difference of the fig 2 16 and the fig 2 15 is that there is not current input in the 121 and 122 terminals The 12 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 LINE 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 LINE 4 BC LOAD i i Fig 2 17 1CT Freguent used wiring method The voltage and current wiring method 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 AMPTRON Fig 2 18 3LN 3CT with 3CTs TEGLT fe Va WE US ER Fig 2 19 3LN 3CT with 2 CTs 3 2LN 2CT 4 2LN 1CT o 2LL 3CT Fig 2 20 2LN 2CT Fig 2 21 2LN 1CT Fig 2 22 2LL 3CT 21 6 2LL 2CT Fig 2 23 2LL 2CT 7 2LL 1CT Fig 2 24 2LL 1CT Fig 2 25 Single Phase 2 Lines 9 Single Phase 3 Line Wiring mode setting 3LN 3CT LIKE a N H Fig 2 26 Single Phase 3 Line Wiring of Digital Switch Statues Input There are two digital input of wet contact in standard Ai205 The terminals of the two Digital input are DI1 DI1 15 16 and DI2 DI2 17 18 Additional two digital
40. omentary For the latching mode the relay can be used to output two statues on or off For the momentary mode the output of the relay changes from off to on for a period of time Ton and than goes off Ton can be setting from 50 300ms The wire of relay output should be chose between AWG22 0 5mm AWG16 1 5mm Digital Output There are two digital outputs for option The terminals ofthe 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 Power Supply Fig 2 30 Digital output Circuit 25 AMPTRON The Max working voltage and current are 100V and 50mA When the digital output is used as pulse output DO1 and DO2 can be programmed as energy pulse output For example DO1 is used as energy pulse output and DO2 is used as reactive energy pulse output The pulse wide and pulse constant can be set When the digital output is used as over limit alarm output the up and low limit of the parameter time interval and output port can be set A drawing of the alarming output with beeper is as fig 2 31 Power Supply Fig 2 31 DO Alarming Circuit The wire of digital output should be chose between AWG22 0 5mm AWG16 1 5mm Communication The communication port and protocol of Ai205 are RS485 and Modbus RTU The terminals of co
41. ord R mai mn 0 59 wora R WO O O O O o1 O1 o o o 0 65535 2000 2099 olo W 0 59 12 NOHLIWY 026A 020BH year 0260H 0207 GE Chou o we R 026FA m o we R O270H ee we wa R 02727 er 2000 2009 word R 0273 mon r wr R 02744 a mo we Ro 02754 T hour o we R 02764 m 069 we R 0277 se os we R ozre Pma 3276832767 integer RO 0279F year 2000 2009 word R OZTAH Cmon m2 we R 2750 HHEH H R 027CH hour o we R 0270H m 069 we R 027EH se os we R 7 ama 3276832767 meor R 0280F year 2000 2009 word R 0281H Cmon e ws R 0282H dey a ws R 0283H rou o ws R 0284H mn joe dR 0285H see oss wa R 284 Sma 0088 wo R 0287H 0288H 0289H 028AH 028BH 028CH 028DH 028EH 028FH 0290H 0291H 0292H 0293H 0294H 0295H 0296H 0297H 0298H 0299H 029AH 029BH 029CH 029DH 029EH 029FH 02A0H 02A1H 02A2H 02A3H Time Stamp of S max Time Stamp of PF max year mon day hour min ec n year mon day hour in i Sec u x Time Stamp of PF max year mon day hour min sec U o 3 D X Time Stamp of Dmd P max year mon day hour min n ec U 3 a 3 D x year 2000 2099 l N olo l l l OION GO lG lG 31 0 1000 1000 2000 2099 olo gt l l l G O1 GO l oO NO 31 0 23 0 70
42. os KM T N TIT G O1 GO l GO 0 65535 2000 2099 T O1 co T 01 co 0 65535 2000 2099 0 65535 2000 2099 1 12 31 pra ra pod K ked bas KOES Gn l O1 NO Gn l GO lR lG gt co cola co cool ASIN 0 65535 2000 2099 N NOHLIWY Time Stamp day 1 3 wrna R hour 0723 wa R of 11 min mn 0o59 wa R sc 0 59 wa R 0 656535 wa R 2000 2009 wra R word I2 min l l NIO wo year 02E3H Time Stamp mon of 12 min day hour min 0 0 59 word word n O1 co sec word 0 65535 2000 2099 word 9 3 5 year word mon l SR N Time Stamp Wels oy Bir word day hour 0 23 min 0 sec 0 59 32768 32767 2000 2099 1 12 word word word integer year word mon day hour n IG ah gt Time Stamp word of P_min Welle 0 0 59 sec 0 32768 32767 2000 2099 word word l l l l l O1 NO O1 Se co w co ER word integer O 5 word Time Stamp year ofA min mon day l N word l oO 2x word oam ru o woa R 2FBH rm jee eee OR ZOH se jee w1 R pal S mn 0668 word R year 2000 2089 word R rime Stamp mon 2 wo R Ce e o RO E E AE O EM A O E O sc 059 wi R FEM 000 mes RO year 2000 2099 word R rime Stamp mon m2 wo R a a o RO hour os wa R mn os w R
43. owerDemandDmd_P_ 32768 32767 Integer R 0152H Reactive power Demand Dmd O 32768 32767 Integer R 0153H Apparent Power Demand Dmd S 65535 word R Table 4 14 Metering data address table 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 Relationship Unit Voltage V1 V2 V3 V12 V23 V31 Vilavg U Rx x PT1 PT2 10 Volt V Rx x CT1 5 1000 Amp A Power P1 P2 P3 Psum Reactive Power Q1 Q2 Q3 Qsum Apparent Power S1 S2 S3 Ssum a M AMPTRON Power Factor PF1 PF2 PF3 PF PF Rx 1000 Load Type RT L C R ASCII of L C R N AA aa O Voltage or Current Unbalance unbl Rx 1000 x 100 N Factor U_unbl unbl l Table 4 15 Measareing data convert table NA FR He A A Energy measurement Function code 03 Read 16 Preset Address Parameters Range Object Type of 0156H High 16 Bit 0158H High 16 Bit Import Reactive Energy Export Reactive Energy 015CH High 16 Bit 015DH Low 16 bit 015EH High 16 Bit 015FH Low 16 bit 015AH High 16 Bit 015BH Low 16 bit Absolute Sum of 0160H High 16 Bit Algebra Sum of 0161H Low 16 bit Energy Ep_net 0162H High 16 Bit Absolute Sum of 0163H Low 16 bit Energy Eq_total 0164H High 16 Bit Algebra Sum of 0165H Low 16 bit Energy Eq_net R Table 4 16 Energy data address table R W R W R W R W R W R W
44. p QZSSBSSSSSSSSS2A A7A ee LEI a L R 5 LR R TE TDB 9 Rp TR Tat Ta R TS Te US la TS Note NC means No Connection Extend Terminal Strip QGlQDSSOBSSOSWSOOAO TOTAL UTS Ponta NELKY UTRUTA DATA OUTPUTS Ls sir nl asi i usi nu EEE Es Fig 2 7 Terminal Strips 1 DANGEROUS Only the qualified personnel could do the wire connection work Make sure the power supply is cut off and all the wires are electroless Failure to observe it may result in severe injury or death U Note Make sure the voltage of power supply is the same as what the meter needed for its auxiliary power Safety Earth Connection Before doing the meter wiring connection please make sure that the switch gear has a safety Earth system Connect the meter safety earth terminal to the switch gear safety earth system The following safety earth symbol is used in the user s manual Auxiliary Power The auxiliary power supply of the Ai205 meter is 85 264Vac 50 60Hz or 100 300Vdc Typical power consumption of the meter is less than 2W A regulator or a UPS should be used when the power supply undulates too much The terminals for the auxiliary power supply are 20 22 and 24 L N U Note Make sure the auxiliary power terminal of the meter G is connected to the safety Earth of switchgear G 85 264Vac Power Supply o 1A FUSE Ground Fig 2 8 Power supply A fuse typical 1A 250Vac should be used in auxiliar
45. play current of each phase 11 12 13 and In as in fig 3 3 11 2 498 I2 2 499 13 2 491 In 0 008A Press V A go to the third screen Fig 3 3 Three phase current The third screen display voltage of line to line U12 U23 U31 and average Ullavg as in fig 3 4 U12 173 2V U23 173 3V U31 173 1V Ullavg 173 2V oA volan Press V A go to the fourth screen The fourth screen display current of each phase and average current as in fig 3 5 11 2 498A I2 2 499A 13 2 491A lavg 2 496A Press V A go back to the first screen Fig 3 5 Three phase current 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 Fig 3 6 Three phase power Fig3 7 Three phase reactire power Fig 3 8 Three phase apparent power Press P display power related data The first screen display power of each phase P1 P2 P3 and system total power Psum As in fig 3 6 P1 0 125KW P2 0 125KW P3 0 125KW Psum 0 375KW Press P go to the second screen The second screen display reactive power of each phase Q1 Q2 Q3 and system total reactive power Qsum As in fig 3 7 A1 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 249K
46. r of register high byte Data of reg lo number of register low byte CRC16 Hi CRC high byte CRC16 Lo CRC low byte AMPTRON 1 Read Status of Relay Function Code 01 This function code is used to read status in Ai205 1 On O Off There are 2 Relays in Ai205 The Address of each Relay is Relay1 0000H and Relay2 0001H The following query is to read Relay Status of Ai205 Number 17 Quer Addr Fun relay start relay start relay of relay of CRC16 CRC16 reg hi lo E hi a lo Table4 4 Read the status of Relay1 and Relay2 Query Message Response The Ai205 response includes the Ai205 address function code quantity of data byte the data and error checking An example response to read the status of Relay1 and Relay2 is shown as Table4 5 The status of Relay1 and Relay2 is responding to the last 2 bit of the data 66 Relay1 bitO Relay2 bit Byte count CRC high CRC low Table4 5 Relay status responds The content of the data is 7 EO 5 4 J3 2 It Jo o jo Jo lo jo jo Ji jo MSB LSB Relay1 OFF LSB Relay2 ON Left to LSB 2 Read the Status of DI Function Code 02 1 On O Off There are 4 Dis in Ai205 The Address of each DI 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 Dl num DI num CRC16 CRC16 addr hi addr lo h lo lo i hi Table4 6 Read 4 Dis Query Message Response The A
47. r the over limit alarm record and DO1 output The CT ratio of the current 11 is 200 5 The up limit of current 11 is set to be 180A The setting of the registers is as following Enable the inequation1 EN_INEQU register bit 0 1 The current 11 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 registerxCT 1 5 1000 The CT1 is 200 and up limit of current is 180A then the data in register is 4500 The setting of the Ref1 is 4500 Time limit is 15 Seconds and the one digit is 300ms then the setting of Limit_t1 is 50 As it is the up limit the INQU_Sign1 should be 1 Use DO1as alarm signal output then the bit0 of the associatedDO1 should be The output mode of DO should be set alarming through front panel or communication 58 A Address emark Alarming record addr Alarming parameter number Var Refer to Table3 3 Addr 1 Alarming value Record the value of alarming Addr 2 arameter Addr 3 Alarming date Addr 4 Adres Addr 6 Minute Alarming time Ada Table3 4 Alarm record Only recent 9 groups of the alarming record can be stored in memory of Ai205 P2 or P3 The format of the record is When the alarming parameter resume normal no longer over the limit it is also recorded User can get the total period of over limit time Note when the alarming parameter resume to normal the highest bit of Var bi
48. rating 52 Import imp Consumption energy Export exp Generating energy Total Absolute sum of import and export energy Net Algebraic sum of import and export energy Reactive power Reactive energy is time integral of reactive power The unit is Kvarh As reactive power has direction positive means inductive and negative means capacitive so the reactive energy has also got the nature of inductive and Capacitive Import imp Inductive reactive energy Export exp Capacitive reactive energy Total Absolute sum of import and export reactive energy Net Algebraic sum of import and export reactive energy Each of the four reactive energies is measured and stored independently Demand Demand of power reactive 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 the 3 minutes is 12 14 10 3 12 at the end of the three Minute If another Minute passed the average power of the Minute is 8 then the total power demand of the last three Minute is 14 10 8 3 10 at the end of the fourth Minute Crest factor CF The crest factor is used to express the distortion of waveform This is an i
49. ring mode could be 3CT 2CT and 1CT Any voltage mode could be group with one of the current mode AMPTRON Voltage Input Wiring 3 Phase 4 Line Wye mode 3LN The 3 Phase 4 Line Wye mode is popularly used in low voltage electric distribution 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 LINE Fig 2 10 direct connection Fig 2 11 3LN with 3PTs 3 Phase 4 Line 2PT mode 2LN In some 3 Phase 4 Line Wye system 2PT Wye mode is often used as in fig 2 12 It is supposed that the 3 phases of power system are balance The voltage of V2 is calculated according to the V1 and V3 The voltage input mode of the Ai205 should be set 2LN for 2PT voltage input wiring mode LINE A BC N 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 LINE amp Bo Fig 2 13 2LL with 2PTs M Current Input Wiring 3CT All the 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 i
50. rocessor and digital signal processing technology Electric power parameters metering energy and demand recording power quality monitoring remote controlling over range alarming statistics and records all these functions are only in one pocket size unit There are also basic alarm on over under Current Voltage Power Power Factor Frequency 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 x 96 and 55mm depth after mounting the Ai205 can be installed in a small cabin The clips are used for easy installation and remove Easy to Use By using of large screen high density LCD the display of Ai205 is easy to read and use All the setting parameters can be access by using panel keys or communication port The setting parameters are protected in EEprom which will maintain its content after the meter is power off With the backlight of the LCD 4 METERING ENERGY amp the display can be easily read in the dim environment The back light on time is selectable Multiple Wiring Modes In either high voltage or low voltage or three phase three wire or three phase four wire or single phase system the Ai2
51. s chapter Please read this chapter carefully before beginning installation work Appearance and Dimensions Part Name 1 Enclosure combustion engineering plastic 2 Front Casing After the installation this part is in front of panel The color of the front casing is selectable 3 LCD Display Large bright blue backlight LCD Display 4 Key Four keys are used to select display and to set parameters of the meter 5 Input Wiring Terminal Used for Voltage and Current input 6 Auxiliary Wiring Terminal Used for auxiliary power communication and DI 7 Extend Wiring Terminal Auxiliary I O wiring terminals 8 Installation Clip When installation the clips are used for fixing the meter to the panel Table2 1 Part name of Ai205 Dimensions Front 96 00 90 00 96 00 Fig 2 2 Dimensions Installation Method R Environmental U Note The installation Please check the environment temperature and environment should humidity to ensure the satisfaction of Ai205 meter s fulfill the temperature requirement before the meter installation and humidity that Ai205 meterreguires Otherwise Tem per ature it may cause the meter damaged Operation 20 C to 70 C Storage 40 C to 85 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 noise source AMPTRON Installation Steps Normally Ai205 was instal
52. s such as THD of voltage and current harmonics up to 31 and unbalance factor of voltage and current etc The main function of Ai205 are listed in table1 1 Table 1 1 Main function of Ai205 series Metering Power Quality Phase Voltage V1 V2 V3 Vinavg THD Even THD and Odd THD of phase line Line Voltage V12 V23 V31 Vllavg Voltage Current 11 12 13 lavg In Harmonics and Crest factor of phase line Power Power of each phase and total Voltage Reactive Power Reactive Power of each THD Even THD and Odd THD of Current phase and total Harmonics and K Factor Apparent Power Apparent Power of each Unbalance Factor of Voltage phase and total Unbalance Factor of Current Power Factor Power factor of each phase and average Frequency Statistics Energyand Demand AI Maximum value of statistics with time stamp Kwh of 4 quadrants Import Export Total Net Mininum value of statistics with time stamp Kvarh of 4 quadrants Import Export Total Net Maximum of Demand Demand of Power and Reactive Power RS485 Communication port 4 Digital Input DI Wet or Dry Modbus RTU Protocol 2 Relay Output 2 Digital Output DO i AMPTRON The Application Area of Ai205 Power Distribution Automation Intelligent Electric Switch Gear Industry Automation Building Automation Energy Manage System Large UPS System The Function of Ai205 Multifunction High Accuracy Ai205 Series Intelligent power meter was designed by use of latest microp
53. sage to the current contents of the register Only the eight bits of data in each character are used for generating the CRC Start and stop bits and the parity bit do not apply to the CRC During generation of the CRC each 8 bit character is exclusive ORed with the register contents Then the result is shifted in the direction of the least significant bit LSB with a zero filled into the most significant bit MSB position The LSB is extracted and examined If the LSB 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 of the message have been applied is the CRC value When the CRC is appended to the message the low order byte is appended first followed by the high order byte Format of communication Explanation of frame Data start Data start Data of Data of CRC16 CRC16 e E E a a a 06H 03H 21H Table4 3 Explanation of frame In table4 3 the meaning of each abbreviated word is Addr address of slave device Fun function code Data start reg hi start register address high byte Data start reg lo start register address low byte Data of reg hi numbe
54. stem power Fig 3 32 Max value of system demand and freguency Note Only Ai205 P2 OR P3 has the function of Max and Min record The fourth screen Max value of power and power factor As In fig 3 31 Max value of system total power P_max 0 375W Max value of system total reactive power Q_max 0 649Kvar Max value of system apparent power S_max 0 749KVA and Max value of system average power factor PF_max 1 000 Press P key to change display from Max to Min and vice versa Press V A key go 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 system total reactive power demand 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 next screen Under the metering data display mode press the H and V A key U Note The setting should be done by the professional personnel after he has read this user s manual and understand the application situation U Note When pressing H and V A keys simultaneously to exit the setting mode the setting of current page will not be stored simultaneously get into the meter parameter setting mode In the meter parameter setting mode press H key to move cursor Right move one digit each time Press P for increasing
55. t15 is set to be 1 Energy pulse output The two digital outputs DO can be select as energy pulse output Any two of the 8 energy and reactive energy can be assigned to be as the pulse output The pulse width and 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 O means no assignment while 1 to 8 corresponding to Ep imp Ep exp Eg imp Eg exp Ep total Ep net Eg total and Eg net respectively 59 AMPTRON Pulse ratio register any integer from 1 to 6000 One digit represents 0 1Kwh or Kvarh This value is the minimum resolution of energy pulse output Pulse width setting register any integer from 1 to 50 One digit represents 20ms The minimum time interval between two adjoining output pulses is 20ms in Ai205 If the pulse width is 20ms then maximum number of output pulses is 25 in one Second If the pulse width is 80ms then the maximum number of output pulse is 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 pulse width 1 x Pmax io gt Pulse ratio 18000 In the expression the Pmax is the maximum power or reactive power The
56. ta field specifies the starting register and how many registers are to be read If the master writes to a group of registers in the slave function code 10 hexadecimal the data field specifies the starting register how many registers to write the count of 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 AMPTRON Error Check Field Messages include an error s checking field that is based on a Cyclical Redundancy Check CRC method The CRC field checks the contents of the entire message It is applied regardless of any parity check method used for the individual characters of the message The CRC field is two bytes containing a 16 bit binary value The CRC value is calculated by the transmitting device which appends the CRC to the message The receiving device recalculates a CRC during receipt of the message and compares the calculated value to the actual value it received in the CRC field If 64 the two values are not egual an error results The CRC is started by first preloading a 16 bit register to all 1 s Then a process begins of applying successive 8 bit bytes of the mes
57. tting page The access code can be changed in this setting page It is important to remember the new access code As in fig 3 55 the access code is 0001 Press the V A key let the access code be stored in Ai205 and go back to the first setting page All the BIDS Goon Coe SEUNG setting has been finished Press H and V A keys exit the setting mode Introduction of measurement and functions of Ai205 Almost all electric parameters in power systems can be measured by Ai205 series intelligent power meter Some parameters that do not be familiar by users will be introduced in this 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 reactive power are measured and displayed in Ai205 Apparent power S Three phase apparent power and system total apparent power are measured and displayed in Ai205 Frequency F The frequency of U1 phase voltage input is measured as system frequency Energy Kwh Energy is time integral of power The unit is Kwh As power has direction positive means consumption and negative means generating So the energy has also the nature of consumption or gene
58. 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 control electric switch or eguipment There are two output mode of the relay latching or momentary Momentary mode is often used to control the electric switch The closing time interval can be selected between 50ms to 3000ms F Chapter 4 Communication j AA AA Introducing Modbus Protocol Format of Communication Data Address Table 61 Introducing Modbus Protocol The Modbus RTU protocol is used for communication in Ai205 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 Coding System 8 bit binary Start bit Data bits Parity no parity Stop bit Error checking CRC check Modbus is trademark of Modicon Inc Framing NOU LIW 8 Bits Nx8 Bits 16 Bits Table4 1 Data Frame Format Address Field The address field of a message frame contains eight bits Valid slave device addresses are in the range of 0 247 decimal
59. voltage input could be AWG16 22 the instrument or 0 6 1 5mm Note In no circumstance could the secondary of PT be shorted The secondary of PT should be well grounded Current Input In a practical engineering application CTs should be installed in the loop of measuring Normally the secondary of CT is 5A 1A is possible in the ordering option ACT of accuracy over 0 5 rating over 3VA is recommended and it will influence the measuring accuracy The wire between CT and Ai205 should be as shorter as possible The length of the wire may increase the error of the measurement The wire number of current input could be AWG15 16 or 1 5 2 5mm The CT loop should not be open circuit in any circumstance when the power is on There should not be any fuse 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 suitable for your power system The voltage and current input wiring mode can be set separately in the meter parameter setting process The voltage wiring mode could be 3 phase 4 line Wye mode 3LN 3 phase 4 line 2PT Wye mode 2LN and 3 phase 3 line open Delta mode 2LL The current input wi
60. y 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 AMPTRON U Note 1A FUSE OES 85 264Vac A filter should be used power Supply GQ N if there is EMI problem Power Ground Fig 2 9 Wiring of Auxiliary Power supply under EMI The choice of wire of power supply could be AWG16 22 or 0 6 1 5mm Voltage Input Two Voltage Input options of Ai205 are 100Vac and 400Vac 100Vac option is suitable for low voltage system that less than 120Vac or high or medium voltage system that the secondary of PT is 100Vac The input voltage V1 V2 and V3 against Vn of Ai205 should be less than 120Vac if the 100Vac option is selected 400Vac option is suitable for low voltage system that less than 480Vac The voltage input could be directly connected to the terminal of Ai205 without the use of PT The input voltage 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 S TEE input loop The secondary of PT 3 cannot be shored PT should be used to transform the high voltage into otherwise it may cause measurement range of Ai205 if it is used in high voltage system UG severe damage gi The wire number of
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