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Delta Meter User's Manual

1. Active tariff 111 1111 VIFE and data is manufacturer specific VIFE will follow 001 0011 Active tariff decided by ABB VIFE will follow VIFE status Oxxx XXXX Error code No VIFE follows Currently active tariff Currently active tariff DIF size 64 bit integer 0000 0111 64 bit integer Instantaneous value LSB of storage number No DIFE follows 85 86 2 Error codes 1111 1011 True VIF according to table FD follows in VIFE 1001 0111 Error flags binary VIFE will follow VIFE status OXxx XXXX Error code No VIFE follows 88 95 XXXXXXXXXXXX Error flags represented binary Error flags as defined by ABB XXXX AL EP ED PADDED 2CMC481035D0001 Page 39 of 54 DELTAsingle meter User s Manual Rev Error Style not defined Byte Size Value Description Explanation No in bytes 96 1 DIF size 8 bit integer 0000 0001 8 bit integer Instantaneous value LSB of storage number No DIFE follows Power fail counter 111 1111 VIFE and data is manufacturer specific VIFE will follow 001 1000 Power fail counter decided by ABB VIFE will follow VIFE status OXXx XXXX Error code No VIFE follows Power fail counter Number of power fails DIF size variable length 0000 1101 Variable length Instantaneous value LSB of storage number No DIFE
2. Fig 2 12 LCD test 2 7 2 2 Error information After the LCD test any internal meter errors are displayed If no errors are detected the text no Err is displayed The error codes are displayed as Err xxx error code xxx For explanation of the error codes se chapter 6 2 7 2 3 Energy display in Alternative mode In Alternative mode the energy registers are displayed in kWh with 1 decimal see figure below which illustrate the difference between Normal and Alternative mode Ak EP ED P IPIP 2CMC481035D0001 Page 13 of 54 DELTAsingle meter User s Manual Rev Error Style not defined Alternative mode Fig 2 13 Energy display in Normal Alternative mode In tariff meters the tariff indicators are used to indicate which tariff energy register that are displayed see section 2 6 3 2 7 2 4 Primary address The M bus primary address is displayed as Adr xxx where xxx is the primary address 2 7 2 5 Date The set date option is displayed If time has not been set is displayed 2 7 2 6 Time The set time option is displayed If time has not been set is displayed 2 7 3 SET MODE Set mode is reached by pressing the SET button while being in Normal or Alternative mode For a flowchart on Set mode see figure 2 10 in section 2 7 optional settings are in italic style After reaching Set mode the different set items and its respective setting can be viewed by pressing the scroll b
3. 6 1 8 3 Default setting At delivery the password is set to 0000000000000000 and the meter is in mode 2 If any internal error occurs in the meter that affects protection the meter will automatically be set to mode 2 There is no timeout in any mode Once set in one mode the meter remains in that mode AA EP ED PADDED 2CMC481035D0001 Page 53 of 54 DELTAsingle meter User s Manual Rev Error Style not defined 7 ACCESORIES Accessory ABB part number Serial Comm Adapter M Bus 99 837 090 Serial Comm Adapter RS232 99 837 091 DIN rail for wall mounting 99 839 501 Enclosure 6 modules for wall mounting 09 809 50 Covers for sealing 09 808 90 8 SERVICE AND MAINTENANCE 8 1 RECALIBRATION It should not be necessary to recalibrate the meter during its lifetime as it is an electronic meter with no moving parts Electronics voltage and current sensors that do not naturally degrade or change with time under specified environmental conditions If a degradation in the accuracy is observed the meter has probably been partly damaged for example due to lightning strike or extreme environmental conditions etc and should be sent for repair or exchanged 8 2 CLEANING If the meter is dirty and needs to be cleaned use lightly moistened tissue with a water based mild detergent Make sure no liquid goes into the meter as this could damage the meter AA EP ID PADDED 2CMC481035D0001 Page 54 of 54
4. Active energy Total kWh with two decimals and LSB first S Notice that the telegram structure may differ in different protocol versions Any remote reading system should decode the telegram according to M Bus standard not according to the specific telegram stated here AL EP ED PADDED 2CMC481035D0001 Page 37 of 54 DELTAsingle meter User s Manual Rev Error Style not defined Byte Size Value Description Explanation No in bytes 38 1 DIF size 12 digit BCD 1000 1110 12 digit BCD Instantaneous value LSB of storage number DIFE will follow 39 1 Tariff 1 0001 0000 Storage number continued Same device no sub unit No DIFE follows 1 VIF for units kWh with resolution 0 01kWh 2dec 1000 0100 0b100 4 10 4 3 10 0 01k Unit is Wh VIFE will follow VIFE status Oxxx XXXX Error code No VIFE follows XXXXXXXXXXXX Active energy Tariff 1 kWh with two decimals and LSB first DIF size 12 digit BCD 000 1110 12 digit BCD Instantaneous value LSB of storage number DIFE will follow Tariff 2 0010 0000 Storage number continued Same device no sub unit No DIFE follows VIF for units kWh with resolution 0 01kWh 2dec 1000 0100 0b100 4 10 4 3 10 0 01k Unit is Wh VIFE will follow VIFE status 0XXX XXXX Error code No VIFE follows XXXXXXXXXXXX Active energy Tariff
5. DELTAsingle User s Manual Rev D ABB Automation Technologies AB Cewe Control P O Box 1005 SE 611 29 NYKOPING Sweden Tel 46 155 295000 Fax 46 155 288110 FALDED Page 1 of 54 DELTAsingle Meter User s Manual Rev TABLE OF CONTENTS TABLE OF CONTENTS 1 GENERAL e 4 2 PRODUCT DESCRIPTION 5 eecsuc consu Reap Gau coco n Cha E key eaeE e ees CHR E pneu aan rcp eun nnen 5 2 1 V AGIIBEO VILAMIAA 5 2 2 METER PARTS EN 6 p METER TYPES E 7 2 3 1 NETWORK RE 8 2 3 2 TYPE DESIGNATION REM 8 2 4 ENERGY GIL NK A 9 2 5 CERN RK OT 9 SEAN ES EIER KR A EE 9 KL GEET E EC ER RK EE 9 2 6 DISPLAY INFORMA TION tege ege sevens tecdectieuaceectsesesess 9 2 6 1 DISPLAY OVER VIEW E 10 2 6 2 7 SEGMENT CHARACTERS COLONS DECIMAL POINTS AND UNIT 10 2 6 3 INDICATION OF ACTIVE TARIFF 200 cecceesccscsescsseeeecseeseesecsessecnaeeecaecaesaecseceeesaeeeeaeeaeeaeeneearenee 11 2 6 4 LOAD INDICATOR mire emeret t eerte eer petere eei recederet tee uo vede t eot Ee E DROPS 11 2 6 5 Commutication stalus iet tete petet ideae te puer este bx etre AER n Ced este bates test eMe Be te ele eo e roe 11 27 VES ELUCET 12 2 7 1 NORMAL MODE 3 rrt rtt PRO tus er ERE e reir eie eec ER erbe e ee 12 2 7 1 1 Energy display in Normal mode eee eee tristi rentre re e eh 12 2 7 2 ALTERNATIVE MODE 6e rrt tree
6. 6 7 8 9 1 1 2 2 16 Stop character always same AL EP ED PADDED 2CMC481035D0001 Page 46 of 54 DELTAsingle meter User s Manual Rev Error Style not defined Reset error flags Value Description Explanation 68 Start character always same OF L field calculated from C field to last user data No of bytes between byte no 5 and byte no 19 L field repeated same as above Start character always same C field SND UD 01x1 0011 Function 3 Send user data FCV 1 FCB is valid FCB Alternate for successive transfers Direction 1 to meter always 0 A field address Primary address 1 250 0 No primary address CI field data send LSB first 0101 0001 Data send Mode 0 Mode 1 LSB first DIF size 64 bit integer 0000 0111 64 bit integer Instantaneous value LSB of storage number No DIFE follows Error codes 1111 1011 True VIF according to table FD follows in VIFE 1001 0111 Error flags binary VIFE will follow Clear 0000 0111 Clear data No VIFE follows XXXXXXXXXXXX Error flags represented binary Error flags as defined by ABB XXXX XX CS checksum calculated from C field to last Checksum on bytes between byte no 5 and byte no 19 data 16 Stop character always same Disable error flags Byte Size Value Description Explanation bytes 2 OF Start character always same L field calculated from
7. PADDED 2CMC481035D0001 Page 21 of 54 DELTAsingle meter User s Manual Rev Error Style not defined e A super capacitor that serves as power backup for the real time clock when the mains voltage is absent meters with internal clock only e Ared LED Light Emitting Diode that flashes with a certain energy pulse frequency impulses kWh e An optoisolated pulse output which give a certain amount of pulses per kWh option e EEPROM for storing energy 1 total and up to 4 tariff registers for active energy calibration and initialization values for the microcontroller and for meter specific values which are used by the firmware in the microcontroller e Aninfra red communication interface consisting of a phototransistor and a LED for connection to an external communication unit AA EP ID PADDED 2CMC481035D0001 Page 22 of 54 DELTAsingle meter User s Manual Rev Error Style not defined 2 10 DIMENSIONS Below the dimensions for the meter are displayed The dimensions in the terminal block conform to the standard DIN 43857 Fig 2 16 Meter dimensions AA EP ED P IPIP 2CMC481035D0001 Page 23 of 54 DELTAsingle meter User s Manual Rev Error Style not defined 3 TECHNICAL DATA 3 1 VOLTAGE CURRENT INPUTS Nominal voltage 220 240 V Voltage range 20 to 15 of nominal voltage Power dissipation voltage circuit 1 3 VA Power dissipation current circuit Less than I k VA where is current in amperes and
8. Send Password 2 Meter Confirm with ACK 3 Master Send Write tariff structure 4 Meter Confirm with ACK 5 Master Send Continue write tariff structure 6 Meter Confirm with ACK Check Sum The Check Sum is used to recognize transmission and synchronization faults It is calculated from the arithmetical sum of the bytes from the control field to the last user data without taking carry digits into account AA EP ED PADDED 2CMC481035D0001 Page 34 of 54 DELTAsingle meter User s Manual Rev Error Style not defined 6 1 3 2 Communication process The Data Link Layer uses two kinds of transmission services Send Confirm SND CON Request Respond REQ RSP After the reception of a correct telegram the meter waits maximum 180ms before answering A received telegram is considered as correct if it passes the following tests e Start Parity Stop bits per character e Start Check Sum Stop characters per telegram format e The second Start character the parity of the two field lengths and the number of additional characters received L Field 6 with a long frame Send Confirm Procedure SND NKE This procedure serves to start up after the interruption or beginning of communication If the meter was selected for secondary addressing it will be deselected The value of the frame count bit FCB is cleared in the meter i e it expects that the first telegram from a master with FCV 1 contains a FCB 1 The meter ei
9. Unit is Wh VIFE will follow VIFE status 0XXX XXxx Error code No VIFE follows XXXXXXXXXXXX Active energy Tariff 4 kWh with two decimals and LSB first DIF this is the last telegram More data can be 000x 1111 read more monthly values Special function 0 End of telegram no DIFE will follow 1 More data will follow in next telegram always same 1 Xx CS checksum calculated from C field to last Checksum on byte no 5 to 82 data 16 Stop character always same AL EP ED PADDED 2CMC481035D0001 Page 43 of 54 DELTAsingle meter User s Manual Rev Error Style not defined 6 1 5 2 Sending data to the meter Set RTC time and date MFS By ABB customized data format Description Explanation L field calculated from C field to last user data No of bytes between byte no 5 and byte no 15 L field repeated same as above Start character always same C field SND_UD 01x1 0011 Function 3 Send user data FCV 1 FCB is valid FCB Alternate for successive transfers Direction 1 to meter always 0 A field address Primary address 1 250 0 No primary address Cl field data send LSB first 01 Data send Mode 0 Mode 1 LSB first DIF size 12 digit BCD 0000 1110 12 digit BCD Instantaneous value LSB of storage number No DIFE follows VIF for timepoint with format s m h D M Y 10 1101 Both ti
10. C field to last user data No of bytes between byte no 5 and byte no 19 L field repeated same as above Start character always same C field SND UD 01x1 0011 Function 3 Send user data FCV 1 FCB is valid FCB Alternate for successive transfers Direction 1 to meter A field address Primary address 1 250 0 No primary address CI field data send LSB first 0101 0001 Data send Mode 0 Mode 1 LSB first DIF size 64 bit integer 0000 0111 64 bit integer Instantaneous value LSB of storage number No DIFE follows Error codes 1111 1011 True VIF according to table FD follows in VIFE 1001 0111 Error flags binary VIFE will follow Disable 0000 1101 Delete data from readout No VIFE follows XXXXXXXXXXXX Error flags represented binary Error flags as defined by ABB XXXX CS checksum calculated from C field to last Checksum on bytes between byte no 5 and byte no 19 data Stop character always same AA EP ED PADDED 2CMC481035D0001 Page 47 of 54 DELTAsingle meter User s Manual Rev Error Style not defined Reset power fail counter Value Description Explanation 68 Start character always same 07 L field calculated from C field to last user data No of bytes between byte no 5 and byte no 11 L field repeated same as above Start character always same C field SND UD 01x1 0011 Function 3 Send us
11. LSB first 0101 0001 Data send Mode 0 Mode 1 LSB first DIF size 8 bit integer 0000 0001 8 bit integer Instantaneous value LSB of storage number No DIFE follows VIF for bus address 0111 1010 Bus address No VIFE follows New primary address New primary address LSB first 1 CS checksum calculated from C field to last Checksum on bytes between byte no 5 and byte no 10 data 16 Stop character always same AL EP ED PADDED 2CMC481035D0001 Page 45 of 54 DELTAsingle meter User s Manual Rev Error Style not defined Password Sent before protected command Byte Size Value Description Explanation No in bytes 1 ao 1 f Start character always same 2 1 0E L field calculated from C field to last user data No of bytes between byte no 5 and byte no 18 3 4 1 L field repeated same as above Start character always same C field SND UD 01x1 0011 Function 3 Send user data FCV 1 FCB is valid FCB Alternate for successive transfers Direction 1 to meter always 0 A field address Primary address 1 250 0 No primary address Cl field data send LSB first 0101 0001 Data send Mode 0 Mode 1 LSB first DIF size 64 bit integer 0000 0111 64 bit integer Instantaneous value LSB of storage number No DIFE follows VIF for password OxFD True VIF in next byte coded accord
12. Pe ERU ERE ER ode NER 13 2 12 ER EE 13 2 7 2 2 Errot infortatlOn 5 5 etg tva beet eniro etn iet exe eben eurer ee PARRA 13 2 7 2 3 Energy display in Alternative mode sss 13 2 1 2 4 een eene 14 DT Des E E 14 EE 14 2 7 3 SEE LEI 14 2 13 1 Primary eene 14 EE ee eebe 15 2733 E 17 2 57 34 Communication Bee VE 18 2 8 PULSE OUTPUT e 19 DD ELRGCERGUNIR eege E e ee E E Ee 21 2 10 DIMENSIONS a A E E Ses Fe E E soncosatessesess covssvaneesesdcsecsessvovaoescosdecsesess ecveacaes 23 3 TECHNICAL DATA 24 341 VOLTAGE CURRENT INPUTS sevssssscssssosssscsonssenssecscossosevecssesesssess ovscesssvestestesonessoesesssecsenssvesvesnseadcetsees 24 3 2 EIN TECH EN EN KEE 24 33 MECHANICAL DATA AND TESTS csccssssssssovsesssosssssssnsosesossscessvensvscssnsansesossonssosscosssoasvonssessssres 24 AL EP ED FADED 2CMC481035D0001 Page 2 of 54 DELTAsingle Meter User s Manual Rev TABLE OF CONTENTS 3 4 ENVIRONMENT DATA AND TEST csssscsssssosssssssssscsossrssessossssssessnssossnssssssssssesssnssossnssessoassosoes 24 35 PULSE OUTPUT OptLoOD oec ectoe eor etin te too tpe ee Leer sutososs EES EE oeverssost ee Lb EE Len 24 3 6 VISIBLE PULSE INDICATOR eicere epar cete ton io b pukor oen eut ee epo ea Yo E ep YI Pe eee RET ER ERR REN Nest va sovoecsnseseseecsevoes 24 3 6 1 STANDARDS i eter a i ee as ete ENEE ENEE 24 3 7 ELECTROMAGNETIC COMPATIBILITY EMC AND INSULATION PROPERTIES 25 2 MENG
13. REQ_UD2 request with toggled FCB and a set FCV with a RSP UD containing the next telegram of a multi telegram answer If the FCB is not toggled it will repeat the last telegram The actual values will be updated in a repeated telegram On receipt of a SND NKE the meter clears the FCB The meter uses the same FCB for primary addressing secondary addressing and point to point communication e The bits 0 to 3 FO F1 F2 and F3 of the control field are the function code of the message Name C field binary Se hex Telegram SND NKE 0100 0000 Short Frame Initialization of Meter 01F1 0011 Long Frame Send User Data to Meter REQ UD2 O1F1 1011 Short Frame Request for Class 2 Data 0000 1000 Long Frame Data Transfer from Meter to Master after Request Function Codes Address Field A field The address field is used to address the recipient in the calling direction and to identify the sender of information in the receiving direction The size of this field is one byte and can therefore take values from 0 to 255 e The address 0 is given to meters at manufacturing e The addresses 1 to 250 are given to the meters as individual primary addresses The address can be set either via the bus or via the buttons see chapter 2 7 3 The primary address can be viewed in Alternative Mode and is displayed as Adr xxx with xxx being the primary address e The addresses 251 and 252 are reserved for future use e The address
14. Style not defined 6 1 3 1 1 Field descriptions All fields used in the telegram frames have a length of one byte 8 bits Length Field L field The L field gives the quantity of the user data inputs plus 3 for the C A and Cl fields It is transmitted twice in telegrams using the long frame format Control Field C field The C field contains information of the direction of the data flow error handling and besides labeling the functions and the actions caused by them the control field specifies the direction of data flow and is responsible for various additional tasks in both the calling and replying directions Bitnumbr 7 Je 5 4 13 A212 IC Jo Tothe meter O PRM FCB FCv F3 IG F1 FO From the meter O PRM o o JF3 F2 F1 Fo Coding of the Control Field e The primary message bit PRM is used to specify the direction of data flow It is set to 1 when a telegram is sent from a master to the meter and to 0 in the other direction e The frame count bit valid FCV is set to 1 by the master to indicate that the frame count bit FCB is used When the FCV is set to 0 the meter ignores the FCB e The FCB is used to indicate successful transmission procedures A master shall toggle the bit after a successful reception of a reply from the meter If the expected reply is missing or the reception of it is faulty the master resends the same telegram with the same FCB The meter answers to a
15. entering the Set mode or the Alternative mode Below is described the format for the energy display in Normal mode 2 7 1 1 Energy display in Normal mode In Normal mode the energy registers are displayed in kWh without decimals In tariff meters the tariff indicators are used to indicate which tariff energy register that are displayed see section 2 6 3 see example in figure below where the tariff 2 active energy register is displayed T1 is blinking indicating that tariff 1 is the currently active tariff AA EP ED PADDED 2CMC481035D0001 Page 12 of 54 DELTAsingle meter User s Manual Rev Error Style not defined Fig 2 11 Normal Mode energy display 2 7 2 ALTERNATIVE MODE The Alternative mode is reached from Normal mode by pressing the SCROLL button for more than two seconds long scroll The DELTAsingle meter indicates being in Alternative mode by the triangle being permanently lit If no button is pressed after entering Alternative mode the different display items will be automatically displayed one at a time in sequence If the scroll button is pressed shortly it single steps hand symbol EU on and each item can be viewed longer time Below is described the information shown in Alternative mode 2 7 2 1 LCD test The first displayed item in Alternative mode is a display test where all LCD segments are set see figure below
16. has 3 ways to communicate depending on type Display at front Pulse output option IR interface for serial communication together with serial communication adapter Programming Selection of information to be shown on the display is easily achieved by using push buttons The programming push button can be sealed by using accessories Tariffs The DELTAsingle range includes 1 2 and 4 tariff meters Type Approval DELTAsingle meter types are tested and approved according to IEC 62052 11 62053 21 and IEC 62054 21 Measurement instrument directive MID category A amp B electrical environmental class E2 and electrical environmental class M2 EN 50470 1 EN 50470 3 category A amp B These standards cover all technical aspects of the meter like climate conditions electromagnetic compatibility EMC electrical requirements mechanical requirements and accuracy AA EP ED P IPIP 2CMC481035D0001 Page 5 of 54 DELTAsingle meter User s Manual Rev Error Style not defined 2 2 METER PARTS The different parts of the meter are depicted below accompanied by a short description of each part Fig 2 1 Meter parts Position 1 SET button Used when programming the meter Position 2 SCROLL button Used when viewing different information and programming the meter Position 3 Product label Label with information about the meter AA EP ED PADDED 2CMC481035D0001 Page 6 of 54 DELTAsingle meter User s Manual Re
17. k is less than 0 0005 typically 0 00015 Current Base current 10 A maximum current 80 A Starting current 25 mA Terminal wire area 4 0 25 mm Recommended tightening torque 4 Nm 3 2 GENERAL DATA Frequency 50 60 Hz 5 Accuracy According to IEC 62052 11 IEC 62053 21 CI 1 EN 50470 1 EN 50470 3 category A amp B Display of energy LCD with 6 digits height 6 mm AA MECHANICAL DATA AND TESTS Material Polycarbonate in transparent top Glass reinforced polycarbonate in bottom Protection class Il Glow wire test according to IEC 695 2 1 Dust and water protection acc to IEC 60529 protection class IP51 mounted in protective enclosure IP20 on terminal block without protective enclosure Weight 0 217 kg 3 4 ENVIRONMENT DATA AND TESTS Operating temperature range 40 C to 55 C Storage temperature range 40 C to 70 C Humidity 75 yearly average 95 on 30 days year Resistance to heat and fire Terminal 960 C cover 650 C IEC 60695 2 11 3 5 PULSE OUTPUT OPTION Current 0 100 mA Voltage max 40 V DC polarity dependent Terminal wire area 0 2 5 mm Pulse output freq 100 imp kWh as standard Pulse width 100 ms as standard Recommended tightening torque 0 5 Nm 3 6 VISIBLE PULSE INDICATOR Red LED with frequency 1000 imp kWh Pulse width 40 ms 3 6 1 STANDARDS IEC 62052 11 IEC 62053 21 Measurement instrument directive MID category A amp B electrical environmental class E2 and elect
18. set operation without altering the setting Notes The activity starts when the button is released Do not press more than one button at a time There is always a time out time two minutes If a button is not pressed during this time the DELTAsingle meter steps back to Normal mode If the scroll button is pressed for more than ten seconds the DELTAsingle meter ignores it 2 6 DISPLAY INFORMATION From the display it is possible to view information such as energy consumption active settings error status etc The most important information is either displayed continuously or automatically displayed sequentially one quantity at a time Information that is not necessary to be viewed all the time can be displayed by using the SCROLL button Ak EP ED P IPIP 2CMC481035D0001 Page 9 of 54 DELTAsingle meter User s Manual Rev Error Style not defined The display has 6 characters of 7 segment type with a height of 6 mm and a number of other specific segments to display unit tariff and status information The illustration below shows all segments forming characters and symbols that can appear on the display in different display modes Note In every mode the energy continues to be measured the energy registers are updated and the meter generates pulses 2 6 1 DISPLAY OVERVIEW Indicates communication Load indicator activity receive and The arrows rotate transmit forward at a constant speed when energy Indicates th
19. tariff structure decided by ABB No VIFE follows Tariff data 207 1 CS checksum calculated from C field to last Checksum on bytes between byte no 5 and byte no 206 data 1 16 Stop character always same Continue write tariff structure zl Byte Size in Value Description Explanation No bytes 68 Start character always same C field SND_UD 01x1 0011 Function 3 Send user data FCV 1 FCB is valid FCB Alternate for successive transfers Direction 1 to meter A field address Primary address 1 250 0 No primary address Cl field data send LSB first 0101 0001 Data send Mode 0 Mode 1 LSB first DIF manufacturer specific data follows 0000 1111 Manufacturer specific data No DIFE follows VIF for continue write tariff structure 1000 0000 always same VIFE will follow 0001 1100 Continue write tariff structure decided by ABB No VIFE follows 41 11 1 XX CS checksum calculated from C field to last Checksum on bytes between byte no 5 and byte no n 1 data n 1 1 16 Stop character always same S Next read out REQ_UD2 will give status of command success failure AL EP ED PADDED 2CMC481035D0001 Page 49 of 54 DELTAsingle meter User s Manual Rev Error Style not defined Read tariff structure Value Description Explanation 68 Start character always same 06 L field calculated from C field to last user
20. the current is above the start current level The rotating speed is constant and independent of the measured energy If the metering is below the start current level all the arrows are constantly on and not rotating If the energy is positive the arrows are rotating in the forward direction and if the energy is negative the arrows are rotating backwards 2 6 5 COMMUNICATION STATUS Fig 2 9 Communication status The M bus communication status is indicated by the communication segments on the LCD which consists of two arrows going into and out of the meter illustrated as a box When the meter detects a valid message addressed to itself it sets the receive segment on the arrow going into the box and when it sends out a message it sets the transmit segment on the arrow going out of the box AL EP ED PADDED 2CMC481035D0001 Page 11 of 54 DELTAsingle meter User s Manual Rev Error Style not defined 2 7 DISPLAY MODES The DELTAsingle meter display system is divided into different display modes In Normal and Alternative mode different values and settings is displayed They are distinguished from each other by the small triangle at the upper part of the LCD which is off in Normal mode and continuously on in Alternative mode There is also a Set mode where different programmable settings can be modified Some information are always displayed on the LCD irrespective of active mode Below in the figure is depicted
21. the display system with its different modes and the different information displayed Always displayed Load indication Active tariff not at total energy display Communication status ALTERNATIVE mode LCD test Error codes Auto Total energy consumption with one decimal NORMAL mode LSc or Energy consumption per tariff with one decimal Sc Primary address Auto Date or lotal energy consumption no decimal LSc Ti Sc Energy consumption per tariff no decimal EU SET mode e pem 8 pem X X X X X X AdrX XX CloSEd S Set primary Set communication address access state Italic text or greay box indicates optional feature S Set button press Sc short press on Scoll button LSc Long Scroll 2 sec or more Fig 2 10 Display system 2 7 1 NORMAL MODE Normal mode is the normal display condition where the most important quantities normally the energies are displayed sequentially and automatically one at a time Normally each quantity is being displayed for 6 seconds When the last quantity has been displayed it will start all over again displaying the first quantity If the SCROLL button is pressed shortly it is possible to single step and view a quantity for longer time All meters will be in Normal mode after power up Normal mode will always be reached via the timeout function if no buttons are pressed for some time The Normal mode can only be interrupted by
22. 0 Mode 1 LSB first DIF size 8 bit integer 0000 0001 8 bit integer Instantaneous value LSB of storage number No DIFE follows VIF for change meter communication status 111 1111 VIFE and data is manufacturer specific VIFE will follow 0110 1010 Change communication status decided by ABB No VIFE follows 0000 0001 Password level 1 CS checksum calculated from C field to last Checksum on bytes between byte no 5 and byte no 11 data Stop character always same AA EP ED PADDED 2CMC481035D0001 Page 50 of 54 DELTAsingle meter User s Manual Rev Error Style not defined 6 1 6 ERROR INFORMATION FLAGS Code Checksum Checksum error tariff 1 active energy Checksum error tariff 2 active energy Checksum error tariff 3 active energy Checksum error tariff 4 active energy Checksum error total energy active energy Checksum error monthly values active energy Checksum error on critical non energy block Checksum error on non critical non energy block Checksum Checksum error tariff 1 reactive energy Checksum error tariff 2 reactive energy Checksum error tariff 3 reactive energy Checksum error tariff 4 reactive energy Checksum error total energy reactive energy Checksum error monthly values reactive energy Installation Any of U1 U3 voltage above meter speci
23. 01_1000 Data Errors AL EP ED PADDED 2CMC481035D0001 Page 33 of 54 DELTAsingle meter User s Manual Rev Error Style not defined VIFE Codes for object actions master to meter VIFE Code E000 0000 Write Replace Replace old with new data E000 0111 Set data to zero E000 1101 Delete from readout Data The Data follows a VIF or a VIFE without the extension bit set Manufacturer Data Header MDH The manufacturer data header MDH is made up by the character OFh or 1Fh 1Fh indicates that more data will follow in the next telegram OFh indicates that all data has been read Manufacturer specific data Manufacturer specific data is sent immediately after the MDH In DELTAsingle this is used for handling reading and writing the tariff structure The commands are sent using SND UD The syntax for the commands is VIF 2 bytes data 0 196 bytes e Write tariff structure The VIF for this command is 80 1A The data to be sent is the first 196 bytes of the tariff structure e Continue write tariff structure The VIF for this command is 80 1B The data to be sent is the remaining part of the tariff structure with a maximum of 196 bytes at a time e Read tariff structure The VIF for this command is 80 1C With this command no data is sent The tariff structure is read from the meter using REQ UD2 until the entire tariff structure is received The procedure for sending a new tariff structure to the meter is 1 Master
24. 2 DIF size 12 digit BCD 000 1110 12 digit BCD Instantaneous value LSB of storage number DIFE will follow Tariff 3 0011 0000 Storage number continued Same device no sub unit No DIFE follows VIF for units kWh with resolution 0 01kWh 2dec 1000 0100 0b100 4 10 4 3 10 0 01k Unit is Wh VIFE will follow VIFE status 0XXX XXXX Error code No VIFE follows XXXXXXXXXXXX Active energy Tariff 3 kWh with two decimals and LSB first AL EP ED PADDED 2CMC481035D0001 Page 38 of 54 DELTAsingle meter User s Manual Rev Error Style not defined Byte Size Value Description Explanation No in bytes 68 1 DIF size 12 digit BCD 1000 1110 12 digit BCD Instantaneous value LSB of storage number DIFE will follow 69 70 2 Tariff 4 000 0000 Storage number continued Tariff 4 LSB Same device no sub unit DIFE will follow 0001 0000 Storage number continued Tariff 4 MSB Same device no sub unit No DIFE follows 71 1 VIF for units kWh with resolution 0 01kWh 2dec 0b100 4 10 4 3 10 0 01k Unit is Wh VIFE will follow VIFE status 0XXX Xxxx Error code No VIFE follows 173 78 6 x ooooooooxx Activeenergy Tariff4 kWh with two decimals and LSB first 79 1 DIF size 8 digit int 0000 0001 8 digit int Instantaneous value LSB of storage number No DIFE follows
25. 253 FDh is used by the secondary addressing procedure e The address 254 FEh is used for point to point communication The meter replies with its primary address e The address 255 FFh is used for broadcast transmissions to all meters None of the meters replies to a broadcast message Control Information Field Cl field The CI field codes the type and sequence of application data to be transmitted in the frame Bit two counting begins with bit 0 value 4 called M bit or Mode bit in the Cl field gives information about the used byte sequence in multi byte data structures For communication with the DELTAsingle meter the AA EP IP P IPIP 2CMC481035D0001 Page 30 of 54 DELTAsingle meter User s Manual Rev Error Style not defined Mode bit shall not be set Mode 1 meaning the least significant byte of a multi byte record is transmitted first Application 51h Data send 52h Selection of slaves Cl field codes to use by the master The meter uses code 72h in the Cl field for responses to requests for user data User Data The User Data contains the data to be sent to the recipient Fixed Data Header Data Records MDH 12 Byte Variable number of bytes Structure of the User Data meter to master Data Records variable number of bytes variable number of bytes Structure of the User Data master to meter Fixed Data Header Identification No 4 Byte 2 Byte 1 Byte 1 Byte 1 Byte 1Byte 2 Byte Struct
26. 6 1 8 2 How to set meter in different modes sese enne ener ener ennt 53 6 1 8 3 Default setting isse iiec nti etie tero gH eese Reuter te gH eed beh eben Deg 53 T ACCESORIES pe sence 54 8 SERVICE AND MAINTENANCE eeeeeeeeeeeseeeeenennn nennen nnn nnnnn nnn nnn 54 8 17 TRECATTBRA TION PERS su esesedsvensessesssease ves sesennssecssecssssoese 54 BZ ei EE EE 54 AL EP ED FADED 2CMC481035D0001 Page 3 of 54 DELTAsingle meter User s Manual Rev Error Style not defined 1 GENERAL This manual contains information about the DELTAsingle which is a family of electronic electricity meters manufactured by ABB Automation Technologies AB The purpose of this manual is to give the user a good overview and understanding of the many functions and features the DELTAsingle offers It also describes general metering aspects The end goal is to help the user to use the meter in the most optimal and correct way and to give the proper service and support to maintain the highest stability and lifetime The degree of the DELTAsingle functions is controlled by its hardware electronic boards mechanics etc software resided in a small computer inside the meter and the meter type specific programming done when it is produced stored in a non volatile EEPROM memory Features both hardware and software which are not standard incorporated in all meters are pointed out in the manual as options WARNING Th
27. E e Wan 25 4 INS ALLAT ION 25 CO MEE 8 TE 25 4 1 1 DIN RAIL MOUNTED ia EEE Ee EErEE EENE EEEE ES ar EAE TONE EEEE EA EAEE 25 4 1 2 WALEMOUNTED EE 25 42 WIRING DIAGRAMS eege ees eines ves ines tue ee deed 26 4 2 1 Voltage and C rrent oie oce un me n de e ETE E E d Te e ee dE 26 4 2 2 PULSE OUTPUT WHEN APPLICABLE enne nnne enne 26 5 MEASUREMENT METHOD eeeeseeeeeeseeseeeennnnn nnn nnn nnnn nnn nnn nnn 27 6 COMMUNICATION eeeeeeeeeeeseeeeeennnn nnne nn nnn nnnn hann ninh nnn nnns nnn n nnn nn nnns 28 Gl M BUS e tninn E 28 6 1 1 COMMUNICATION OBJECTS cenean dE 28 6 1 2 PHYSICAL INTERFACE vaer E e MV UR nis 28 6 1 2 Opticaliteiface eee pe ettet te mete exu ce e DRIVES Eve REY RUNS E eee ce dada 28 6 1 3 PROTOCOL DESCRIPTION sis etch citer entere epe FORE Ee Rena NS dinate beet Fen FEY Sape ERS VR EUER E Sepe ER eV e CREER ed 29 6 1 3 1 Telegram formats EE 29 6 1 3 1 D Field descriptiols ee geed 30 6 1 3 2 Communication process enne enne nennen nennt eren innen een enint nennen nennen 35 6 1 3 2 1 Selection and Secondary Addressing 35 6 1 4 QUIS OI d IE LE 36 6 1 5 MINIMUM REQUEST TIME 36 6 1 5 1 Sending data to the meter 44 6 1 6 Error Information flags RR 51 6 1 7 INSTALLA HON iss ote oU tested accustes een pottateunedstasteateteuss cia tM nc taeeeetateeastyes 52 6 1 8 PASSWORD PROTECTION un 52 NEN MEG ici n 52
28. Energy Total Total cumulative Active Energy current and stored Active Energy Tariff 1 Cumulative Active Energy Tariff 1 current and stored Active Energy Tariff 2 Cumulative Active Energy Tariff 2 current and stored Active Energy Tariff 3 Cumulative Active Energy Tariff 3 current and stored Active Energy Tariff 4 Cumulative Active Energy Tariff 4 current and stored Power fail counter Read and reset power fail counter Current tariff Read current tariff Manufacturer Manufacturer information Error flags Read and reset error flags Tariff switch table Read and write tariff structure Time amp Date Read and set time and date Password Give and change password 6 1 2 PHYSICAL INTERFACE The physical interface allows serial half duplex asynchronous communication Since the bus has a master slave structure where there must and can be only one master the meters cannot communicate with each other 6 1 2 1 Optical interface The DELTAsingle has an optical interface located on the left side Physical characteristics of the interface correspond to the standard IEC 61107 Communication speed is 2400 bps AA EP ED PADDED 2CMC481035D0001 Page 28 of 54 DELTAsingle meter User s Manual Rev Error Style not defined 6 1 3 PROTOCOL DESCRIPTION The M Bus protocol is based on the international standard IEC 870 but it do not use all of the specified functions When there is no communication on the bus it is in Mark state Each c
29. according to the specific telegram stated here AA EP ED PADDED 2CMC481035D0001 Page 41 of 54 DELTAsingle meter User s Manual Rev Error Style not defined Byte Size Value Description Explanation No in bytes 31 1 DIF size 12 digit BCD 1x00 1110 12 digit BCD Instantaneous value LSB of storage number DIFE will follow 32 1 DIFE storage number continued 0000 xxxx Storage number continued Same device no sub unit No DIFE follows 1 VIF for units kWh with resolution 0 01kWh 2dec 1000 0100 0b100 4 10 4 3 10 0 01k Unit is Wh VIFE will follow VIFE status Oxxx XXXX Error code No VIFE follows XXXXXXXXXXXX_ Active energy Total kWh with two decimals and LSB first DIF size 12 digit BCD x00 1110 12 digit BCD Instantaneous value LSB of storage number DIFE will follow Tariff 1 0001 xxxx Storage number continued Same device no sub unit No DIFE follows VIF for units kWh with resolution 0 01kWh 2dec 1000 0100 0b100 4 10 4 3 10 0 01k Unit is Wh VIFE will follow VIFE status Oxxx XXXX Error code No VIFE follows XXXXXXXXXXXX Active energy Tariff 1 DIF size 12 digit BCD x00 1110 12 digit BCD Instantaneous value LSB of storage number DIFE will follow Tariff 2 0010 xxxx Storage number continued Same device no sub unit No DIFE follo
30. ary address can be set via the communication see 6 1 4 or with the buttons see 2 7 2 4 6 1 8 PASSWORD PROTECTION 6 1 8 1 General The communication can be in three different modes Mode Description Shown in LCD 0 Open for al communication OPEn 1 Password protected CloSed 2 Closed for al protected communication CloSed Protected communication are e Setting of date e Setting of time e Writing tariff structure e Changing timekeeping source between net frequency and internal crystal If the set password is 0000000000000000 any password is accepted it is also accepted to not sending any password at al just sending the commands directly If password is set to anything else and the meter is in mode 1 the correct password must be sent and then the desired command must AA EP ED PADDED 2CMC481035D0001 Page 52 of 54 DELTAsingle meter User s Manual Rev Error Style not defined be sent within two seconds No other command must be sent in between the sent password and the protected command 6 1 8 2 How to set meter in different modes Mode 0 To move to mode 0 the SET button must be used to change status to OPEn Mode 1 With the SET button changing to CloSed the meter enters mode 1 If the meter is in mode 2 it is not needed to first save the setting OPEn it is enough to just scroll the setting between CloSed OPEn CloSed and then save Mode 2 Mode 2 can be entered by sending the M Bus command Close meter
31. at Indicates single is measured Alternative mode is step mode and active set mode active Values decimal points and colons Tariff symbols 1 The symbol for the active tariff flashes The symbol for a non active tariff remains lit when its value is being displayed Measuring units Fig 2 5 DELTAsingle meter LCD 2 6 2 7 SEGMENT CHARACTERS COLONS DECIMAL POINTS AND UNIT All energy values are displayed by using the 6 characters decimal points and the unit segments Time and date are displayed by using the 6 characters and the colons The figure below shows examples where the energy 21583 kWh and the time is displayed hour 9 minute 7 and seconds 48 AA EP ED PADDED 2CMC481035D0001 Page 10 of 54 DELTAsingle meter User s Manual Rev Error Style not defined Fig 2 6 Display of active energy and time 2 6 3 INDICATION OF ACTIVE TARIFF Fig 2 7 Tariff indicators Active tariff option is indicated with a constant flashing of the tariff indicator for example T1 for tariff 1 When a value for a tariff which is not active is displayed its indicator remains lit The only time when the active tariff is not blinking is when a total energy register is displayed or an LCD test is pending all segments on 2 6 4 LOAD INDICATOR Fig 2 8 Load indicator There are three arrows which will rotate as soon as
32. ays same 07 L field calculated from C field to last user data No of bytes between byte no 5 and byte no 11 L field repeated same as above Start character always same C field SND UD 01x1 0011 Function 3 Send user data FCV 1 FCB is valid FCB Alternate for successive transfers Direction 1 to meter always 0 A field address Primary address 1 250 0 No primary address CI field data send LSB first 0101 0001 Data send Mode 0 Mode 1 LSB first DIF size 16 bit integer 0000 0010 16 bit integer Instantaneous value LSB of storage number No DIFE follows VIF for timepoint with format Y M D 0110 1100 Just date not time Timepoint No VIFE follows 10 11 2 Date D M Y formatted as data type G 12 1 XX CS checksum calculated from C field to last Checksum on bytes between byte no 5 and byte no 11 data 16 Stop character always same Set primary address Description Explanation Start character always same L field calculated from C field to last user data No of bytes between byte no 5 and byte no 10 L field repeated same as above Start character always same C field SND UD 01x1 0011 Function 3 Send user data FCV 1 FCB is valid FCB Alternate for successive transfers Direction 1 to meter always 0 A field address Primary address 1 250 0 No primary address Cl field data send
33. ccuracy class 10 80 A CI T1100 imp Puls autput frequency when applicable Protective class HITE 2004 10 123456 Year and week of manufacture erial number Fig 2 2 Product label Ak EP ED PAIDED 2CMC481035D0001 Page 7 of 54 DELTAsingle meter User s Manual Rev Error Style not defined A meter is identified by its type designation For explanation of the positions in the type designation see further down in this chapter 2 3 1 NETWORK TYPE The network type symbol tells the number of measurement elements the meter contains One voltage and one current is measured and used in the energy measurement 1 measuring element Fig 2 3 Network symbol The meter is used in single phase metering system with 2 wires 2 3 2 TYPE DESIGNATION DEL TAsingle ULJLIL DLL Pos 1 2 5 6 8 9 11 Base Delta Single F Measurement Active Direct connected B Communication Pulseoutput IR port B IR port U Accuracy Class 1 1 Voltage 1x230 V 1 Options None 000 Verification with inspection 200 2 tariffs Internal clock 005 4 tariffs Internal clock 006 Internal clock only no tariffs 007 Customization None Elster RU 107 Standard RU 108 AA EDER P AIPIP 2CMC481035D0001 Page 8 of 54 DELTAsingle meter User s Manual Rev Error Style not defined 2 4 ENERGY INDICATOR COO LED Fig 2 4 Energy indicator The red LED Light Emitting Diode on the front is an indicator that flashes in proportion to the ener
34. d Mode 1 LSB first XXXXXXXX Identification Number 8 BCD digits Serial number LSB first 12 34 56 78 sent as 78 56 34 12 4204 Manufacturer ABB ABB 0442 LSB first gives 4204 Version Protocol version decided by ABB Medium 02 Electricity 02 electricity Number of accesses Increased by 1 after every respond RSP_UD Status OOxx xxxx I Application busy Any application error application internal Power low Permanent error Temporary error Installation error specific to manufacturer DIF size 12 digit BCD x00 1110 12 digit BCD Instantaneous value LSB of storage number DIFE will follow DIFE storage number continued Storage number continued Same device no sub unit No DIFE follows VIF for timepoint with format s m h D M Y 110 1101 Both time and date not just date Timepoint VIFE will follow VIFE Timepoint here is valid for whole 1011 message This energy was stored at end of End of month First Date time of VIFE will follow VIFE status OXxx XXXX Error code No VIFE follows XXXXXXXXXXXX Time and date historical value Midnight at first s m h D M Y day in month if not error power fail then i Notice that the telegram structure may differ in different protocol versions Any remote reading system should decode the telegram according to M Bus standard not
35. d VIF Value Information contains information about the value unit status etc The Extension Bit is set when next byte is a VIFE In case of VIFE FFh the next VIFE is manufacturer specific The manufacturer specific VIFE has the same construction as a VIF If the extension bit of the manufacturer specific VIFE is set the next byte is a standard VIFE otherwise it is the first data byte VIF Code Description Range Coding E000 Onnn 4o nnn 3 wh 0 001Wh to 10000Wh E111 1010 Bus Address 0to250 E110 1101 Time amp Date See telegrams 6 1 5 2 11111011 Extension of VIF codes Not used by DELTAsingle ITT Lett gt and is coded using Table FD ET e OT specific Codes for Value Information Field VIF Codes for Value Information Field Extension VIFE used with extension indicator FDh If the VIF contains the extension indicator FDh the true VIF is contained in the first VIFE VIFE Code E001 0110 E001 0111 Error Flags binar Table FD Codes for Value Information Field Extension VIFE The following values for VIFE s are defined for an enhancement of VIF s other than FDh and FBh IFE Code E110 1011 Date Time of 1111 1111 Next VIFE is manufacturer specific Manufacturer specific VIFE Codes VIFE Code E001 001 VIFE Codes for reports of record errors meter to master VIFE Code Type of Record Error Error Group E000 0000 None None E001 0101 No data available undefined value E0
36. data No of bytes between byte no 5 and byte no 10 L field repeated same as above Start character always same C field SND UD 01x1 0011 Function 3 Send user data FCV 1 FCB is valid FCB Alternate for successive transfers Direction 1 to meter always 0 A field address Primary address 1 250 0 No primary address Cl field data send LSB first 0101 0001 tt Data send Mode 0 Mode 1 LSB first DIF manufacturer specific data follows 0000 1111 Manufacturer specific data No DIFE follows VIF for read tariff structure 1000 0000 always same VIFE will follow 0001 1100 Read tariff structure decided by ABB No VIFE follows CS checksum calculated from C field to last Checksum on bytes between byte no 5 and byte no 10 data Stop character always same Close meter Byte Size Value Description Explanation No in 1 I1 1 f Start character always same 07 L field calculated from C field to last user data No of bytes between byte no 5 and byte no 11 L field repeated same as above Start character always same C field SND UD 01x1 0011 Function 3 Send user data FCV 1 FCB is valid FCB Alternate for successive transfers Direction 1 to meter always 0 A field address Primary address 1 250 0 No primary address Cl field data send LSB first 0101 0001 Data send Mode
37. e number No DIFE follows VIF for change meter communication status 111 1111 VIFE and data is manufacturer specific VIFE will follow 0110 1011 Change RTC status decided by ABB No VIFE follows 01 Use net frequency 0000 00xx 02 Use internal crystal Setting always same CS checksum calculated from C field to last Checksum on bytes between byte no 5 and byte no 11 data AL EP ED PADDED 2CMC481035D0001 Page 48 of 54 DELTAsingle meter User s Manual Rev Error Style not defined Write tariff structure Byte Size in Value Description Explanation No bytes 1 1 Start character always same 1 68 d CA L field calculated from C field to last user data No of bytes between byte no 5 and byte no 206 a 1 st Stat cert fray sam 4 1 68 Start character always same C field SND UD 01x1 0011 a Function 3 Send user data FCV 1 FCB is valid FCB Alternate for successive transfers 2 3 5 6 A field address Primary address 1 250 0 No primary address 7 Cl field data send LSB first 0101 0001 tt Data send Mode 0 Mode 1 LSB first 8 DIF manufacturer specific data follows 0000 1111 Manufacturer specific data No DIFE follows 9 10 VIF for write tariff structure 1000 0000 always same VIFE will follow 0001 1011 11 206 2 Write
38. e voltages connected to the DELTAsingle are dangerous and can be lethal Therefore it must be insured that the terminals are not touched during operation When installing the DELTAsingle all voltages must be switched off AL EP ED PADDED 2CMC481035D0001 Page 4 of 54 DELTAsingle meter User s Manual Rev Error Style not defined 2 PRODUCT DESCRIPTION This chapter contains a description of the basic functions and practical handling of the DELTAsingle Functionality regarding communication is described in chapter 6 2 1 FAMILY OVERVIEW General Presentation DELTAsingle is an electronic electricity meter for single phase metering As option the meter has an internal clock for handling tariffs The setting is done with push buttons or via communication DELTAsingle is intended for mounting on a DIN rail and is designed in accordance with the ABB ProM standard General Features DELTAsingle is an active energy single phase meter for direct metering up to 80A The LCD display has 6 digits 6 mm high to ensure easy reading DELTAsingle is made compact only 4 modules to save space in the installation In case of power failure the meter is equipped with a super capacitator power backup that will run the clock for minimum 48 hours meters with internal clock only A red LED at the front flashes proportionally to the energy consumed DELTAsingle has a temperature range from 40 to 55 C storage 70 C Communication DELTAsingle
39. er data FCV 1 FCB is valid FCB Alternate for successive transfers Direction 1 to meter always 0 A field address Primary address 1 250 0 No primary address Cl field data send LSB first 0101 0001 Data send Mode 0 Mode 1 LSB first DIF size no data 0000 0000 No data Instantaneous value LSB of storage number No DIFE follows Power fail counter 111 1111 VIFE and data is manufacturer specific VIFE will follow 001 1000 Power fail counter decided by ABB VIFE follows VIFE clear counter 0000 0111 Clear data No VIFE follows CS checksum calculated from C field to last Checksum on bytes between byte no 5 and byte no 11 data Stop character always same Byte Size Value Description Explanation bytes 2 1 07 Start character always same L field calculated from C field to last user data No of bytes between byte no 5 and byte no 11 L field repeated same as above Start character always same C field SND UD 01x1 0011 Function 3 Send user data FCV 1 FCB is valid FCB Alternate for successive transfers Direction 1 to meter always 0 A field address Primary address 1 250 0 No primary address Cl field data send LSB first 0101 0001 Data send Mode 0 Mode 1 LSB first DIF size 8 bit integer 0000 0001 8 bit integer Instantaneous value LSB of storag
40. et RTC time and date Set RTC date Set primary address Password Change Password Reset error flags Disable error flags Reset power fail counter Switch to from crystal drive Write tariff structure Continue write tariff structure Read tariff structure Close meter 6 1 5 MINIMUM REQUEST TIME It is not possible for the master to send several REQ_UD2 telegram to the meter without allowing for a small delay This delay is dependent on the main voltage The table below shows the allowed minimum time between requests A second request sent within the minimum allowed time will be ignored by the meter Voltage VAC Minimum time ms 220 280 50 215 150 210 150 205 250 200 250 195 350 190 350 185 450 180 450 175 550 170 Not possible Ak EP ED PADDED 2CMC481035D0001 Page 36 of 54 DELTAsingle meter User s Manual Rev Error Style not defined 6 1 5 1 Read out telegrams First telegram containing current data at normal read out REQ _UD2 Byte Size Value Description Explanation bytes s 2 1 6E Start character always same L field calculated from C field to last user data Ox6E 110 bytes byte no 5 to 114 L field repeated same as above Start character always same C field RSP UD 0000 1000 Function 8 User data DFC 0 can accept further data ACD 0 class 2 data Direction 0 from meter always 0 A field address Primary address 1 250 0 No primary address Cl field var
41. fication Any of U1 U3 voltage below meter specification Any of 11 13 current above meter specification Frequency outside meter specification U1 missing U2 missing U3 missing Phase connected to neutral Installation Negative power element 1 Negative power element 2 Negative power element 3 Negative power total External data input signal out of specification Ni OD 01 B GO DO OTN OD O1 AION S OPN OD AI OIN OPEN OD Oo BG PO o AL EP ED PADDED 2CMC481035D0001 Page 51 of 54 DELTAsingle meter User s Manual Rev Error Style not defined Configuration Pulses merged Date not set Time not set Tariffs set wrong Single phase meter Two element meter Three element meter Active energy Reactive energy Hardware Main EEPROM failed Extended EEPROM failed Vref is not VDD 2 Temperature sensor error RTC circuit error MCU circuit error Internal Internal system variable 1 ABB use only Internal system variable 2 ABB use only Internal system variable 3 ABB use only Internal system variable 4 ABB use only Internal system variable 5 ABB use only Internal system variable 6 ABB use only Internal system variable 7 ABB use only Internal system variable 8 ABB use only 6 1 7 INSTALLATION The prim
42. follows Firmware version 1111 1011 True VIF according to table FD follows in VIFE 1000 1110 Firmware version VIFE will follow VIFE status Oxxx XXxx Error code No VIFE follows 08 ASCII string 8 characters 0000 1000 ASCII string 8 characters XXXXXXXXXXXX_ Firmware version Firmware version with LSB first XXXX DIF this is the last telegram More data can be 00 read monthly values E Special function 0 End of telegram 1 More data will follow in next telegram always same XX CS checksum calculated from C field to last Checksum on byte no 5 to 114 data 16 Stop character always same Ox 1111 AL EP ED PADDED 2CMC481035D0001 Page 40 of 54 DELTAsingle meter User s Manual Rev Error Style not defined Following telegrams containing stored data at normal read out REQ_UD2 Value Description Explanation 68 Start character always same 4E L field calculated from C field to last user data Ox4E 78 bytes byte no 5 to 82 L field repeated same as above Start character always same C field RSP UD 0000 1000 Function 8 User data DFC 0 can accept further data ACD 0 class 2 data Direction 0 from meter always 0 A field address Primary address 1 250 0 No primary address Cl field variable data respond LSB first 0111 0010 ttt Variable data respon
43. ge and current signals are sampled by A D converters incorporated in the microcontroller and multiplied together digitally to get the energy The meter is calibrated via registers to fulfill the accuracy class requirements stated in IEC 62053 21 The microcontroller also handles the real time clock RTC LCD EEPROM 2 buttons red LED programmable amplifier infrared IR communication interface and the pulse output e An LCD Liquid Crystal Display for display of accumulated energy time date status information etc e The current is measured with a current transformer CT through which the current to measure flows The output current from the transformer flows through a load resistor which produces a voltage which is fed to the microcontroller At low currents the signal is amplified with a programmable amplifier e The mains voltage is divided by a resistor divider and fed into the microcontroller e 2 push buttons called SCROLL and SET to control the display on the LCD and for programming of time and date etc The SCROLL button is in most cases used to display the next quantity or item in a sequence whereas the SET button is used for programming the meter A power supply that generate a voltage that feeds the electronics microcontroller EEPROM etc A real time clock option that keeps track of time and date The time and date is used to control the tariff switching and for storing the energy values on a monthly basis AA EP ED
44. gy Every pulse means that a certain amount of energy has been registered that is it has a certain energy pulse frequency This frequency is marked on the front of the meter 2 5 BUTTONS The DELTAsingle has two user buttons one on the front called SCROLL and one called SET The SET button can be sealed using the accessory short cover 2 5 1 1 SET BUTTON The SET button is used for programming that is to reach Set mode activate a change operation and to confirm a changed setting 2 5 1 2 SCROLL BUTTON With the SCROLL button the different information displayed can be viewed such as going to different display modes or proceeding to the next quantity No settings can be altered solely by this button The SCROLL button has two different functions depending on how long time it is pressed Short scroll When the SCROLL button is pressed for up to two seconds it displays the next value This can be used to enter single step mode that is to manually scroll through the different display items While being in single step mode the hand on the LCD Er is on Long scroll When the SCROLL button is pressed for between two and ten seconds it steps between modes When a long scroll is performed in Normal mode the DELTAsingle switches to Alternative mode When a long scroll is performed in Alternative mode the meter switches back to Normal mode A long scroll in Set mode lets you step back This can be used for example to exit a pending
45. gy The pulse output sends out a certain amount of pulses per kilowatt hour The pulse output is galvanically isolated from the rest of the electronics in the meter It fulfil the the IEC standard 62053 31 and DIN 43 864 standard often called SO AA EP ED P IPIP 2CMC481035D0001 Page 19 of 54 DELTAsingle meter User s Manual Rev Error Style not defined The output have a maximum voltage and current specified to 40 Volt DC and 100 mA It is built with a transistor and an optocoupler of transistor type and is polarity dependent The equivalent circuitry of the output is depicted below Fig 2 14 Pulse output equivalent schematic diagram AA EP ED PADD 2CMC481035D0001 Page 20 of 54 DELTAsingle meter User s Manual Rev Error Style not defined 2 9 ELECTRONICS The energy measuring is realized electronically see figure below where the electronics is depicted in a block diagram Phase IR Comm port LCD in Power supply 2 3V X T SCHOLL SET o Resistor divider 4 m en Microcontroller Ph f Ben M E b Programmable bh 4 p d e Amplifier 7 2 Pulse x3 K output N kWh EEPROM N RE SuperCap ET RTC Red LED x i Fig 2 15 Electronics block diagram The meter hardware can be divided into the following parts e A microcontroller that performs the energy calculation The volta
46. iable data respond LSB first 0111 0010 Variable data respond Mode 1 LSB first Identification Number 8 BCD digits Serial number LSB first 12 34 56 78 sent as 78 56 34 12 Manufacturer ABB ABB 0442 LSB first gives 4204 Version Protocol version decided by ABB Medium 02 Electricity 02 electricity Number of accesses Increased by 1 after every respond RSP_UD Status OOxx xxxx I Application busy Any application error application internal Power low Permanent error Temporary error Installation error specific to manufacturer Not used specific to manufacturer Not used specific to manufacturer Signature 0000 no encryption always same DIF size 12 digit BCD 0000 1110 12 digit BCD Instantaneous value LSB of storage number No DIFE follows VIF for timepoint with format s m h D M Y 110 1101 Both time and date not just date Timepoint VIFE will follow VIFE status Oxxx XXXX Error code No VIFE follows 23 28 W XXXXXXXXXXXX Time and date s m h D M Y 29 DIF size 12 digit BCD 0000 1110 12 digit BCD Instantaneous value LSB of storage number No DIFE follows VIF for units kWh with resolution 0 01kWh 2dec 1000 0100 0b100 4 10 4 3 10 0 01k Unit is Wh VIFE will follow VIFE status OXxx XXXX Error code No VIFE follows NM xxxxxxxxxxxx
47. ing to extension table FD 0001 0110 Password No VIFE follows XXXXXXXXXXXX Current password Current password LSB first XXXX XX CS checksum calculated from C field to last Checksum on bytes between byte no 5 and byte no 18 data 16 Stop character always same Change password Byte Size Value Description Explanation No in bytes OF L field calculated from C field to last user data No of bytes between byte no 5 and byte no 19 3 1 OF 1 L field repeated same as above 4 1 68 Start character always same 1 C field SND_UD 01x1 0011 Function 3 Send user data FCV 1 FCB is valid FCB Alternate for successive transfers Direction 1 to meter always 0 A field address Primary address 1 250 0 No primary address Cl field data send LSB first 0101 0001 Data send Mode 0 Mode 1 LSB first No VIFE follows 2 19 8 XXXXXXXXXXXX New password New password LSB first XXXX XX CS checksum calculated from C field to last Checksum on bytes between byte no 5 and byte no 19 data 1 DIF size 64 bit integer 0000 0111 64 bit integer Instantaneous value LSB of storage number No DIFE follows 10 VIF for password OxFD True VIF in next byte coded according to extension table FD 1001 0110 Password VIFE will follow 1 Replace with new 0000 0000 Replace old data with new 5
48. lashing AA EP ED P IPIP 2CMC481035D0001 Page 15 of 54 DELTAsingle meter User s Manual Rev Error Style not defined The hour digits are increased by 1 for every short press possible values 0 23 on the SCROLL button The chosen value is confirmed by pressing the SET button The minute tens digit then starts flashing and is increased for every short press possible values 0 5 on the SCROLL button The chosen value is confirmed by pressing the SET button The minute unit digit then starts flashing and is increased for every short press possible values 0 9 on the SCROLL button The chosen value is confirmed by pressing the SET button The second digits then starts flashing and is set to zero at every short press on the SCROLL button The second digits are confirmed by pressing the SET button which completes the time set operation Ak EP ED PADDED 2CMC481035D0001 Page 16 of 54 DELTAsingle meter User s Manual Rev Error Style not defined 2 7 3 3 Date Allows setting of the date When the SET button is pressed while the date day month year is displayed in Set mode 7 X EE Ce dr ma ND d The day digits are increased by 1 for every short press possible values 1 31 on the SCROLL button The chosen value is confirmed by pressing the SET button The month digi
49. me and date not just date Timepoint No DIFE follows Time and date CS checksum calculated from C field to last Checksum on bytes between byte no 5 and byte no 15 data Stop character always same Size Value Description Explanation in bytes Start character always same L field calculated from C field to last user data No of bytes between byte no 5 and byte no 13 L field repeated same as above Start character always same C field SND UD 01x1 0011 Function 3 Send user data FCV 1 FCB is valid FCB Alternate for successive transfers Direction 1 to meter always 0 A field address Primary address 1 250 0 No primary address Cl field data send LSB first 0101 0001 tt Data send Mode 0 Mode 1 LSB first DIF size 32 bit integer 0000 0100 32 bit integer Instantaneous value LSB of storage number No DIFE follows VIF for timepoint with format m h D M Y 0110 1101 Both time and date not just date Timepoint No DIFE follows Time and date m h D M Y formatted as data type F CS checksum calculated from C field to last Checksum on bytes between byte no 5 and byte no 13 data Stop character always same AL EP ED PADDED 2CMC481035D0001 Page 44 of 54 DELTAsingle meter User s Manual Rev Error Style not defined Set RTC date Value Description Explanation 68 Start character alw
50. ommunicated byte consists of eleven bits The bits are one start bit space eight data bits one parity bit even and one stop bit mark The least significant bit is transmitted first Calling direction master to meter IMark 11 20 m IMark Fig 6 1 Transmission of a Character in Calling and Replying Direction 6 1 3 1 Telegram formats The telegram formats are structured according to format class FT1 2 The FT1 2 format fulfils the data integrity class I2 including a Hamming Distance of four Three telegram formats are used The start character identifies the different telegram formats 0 252 byte Telegram Formats e Single Character The Single Character format consists of a single character E5h and is used to acknowledge received telegrams e Short Frame The Short Frame format is identified by its start character 10h and consists of five characters Besides the C and A fields it includes the checksum and the stop character 16h e Long Frame The Long Frame format is identified by its start character 68h and consists of a variable number of characters After the start character the L field is transmitted twice then the start character once again followed by the C A and Cl fields The user data 0 252 bytes is transmitted after the Cl field followed by the check sum and the stop character 16h AA EP ED PADDED 2CMC481035D0001 Page 29 of 54 DELTAsingle meter User s Manual Rev Error
51. rical environmental class M2 EN 50470 1 EN 50470 3 category A A B Pulse output according to IEC 62053 31 S0 DIN 43864 Time keeping according to IEC 62054 21 AL EP ED PADDED 2CMC481035D0001 Page 24 of 54 DELTAsingle meter User s Manual Rev Error Style not defined 3 7 ELECTROMAGNETIC COMPATIBILITY EMC AND INSULATION PROPERTIES According to IEC 62052 11 IEC 62053 21 Impulse voltage test 6 kV 1 2 50us IEC 600 60 Fast transient burst test 4 kV IEC 61000 4 4 Immunity to electromagnetic HF Fields 80 MHz 2 GHz at 10 V m IEC61000 4 3 Immunity to conducted disturbance 150kHz 80MHz IEC 61000 4 6 Radio frequency emission according to CISPR 22 class B Electrostatic discharge ESD 15 kV for IEC 61000 4 2 3 8 CLOCK OPTION Clock backup Super Cap 48h Clock accuracy Using net frequency 5s 30 days at nominal frequency and normal operating conditions Using crystal 0 5s day at reference temperature Temperature dependence 0 15s C day In backup 1s day at reference temperature Temperature dependence 0 30s C day 4 INSTALLATION WARNING The voltages connected to the DELTAsingle are dangerous and can be lethal Therefore all voltages must be switched off when installing the DELTAsingle 4 1 MOUNTING The DELTAsingle can be mounted in different ways Below is described the most common ways For some of the mounting alternatives additional accessories are needed for part n
52. rs the selection with an acknowledgement E5h otherwise it doesn t reply Selected state means that the meter can be addressed with the bus address 253 FDh During selection individual positions of the secondary addresses can be occupied with wildcards Such a wildcard means that this position will not be taken into account during selection In the identification number each individual digit can be wild carded by a wildcard nibble Fh while the fields for manufacturer version and medium can be wild carded by a wildcard byte FFh The meter will remain selected until it receives a selection command with non matching secondary addresses a selection command with Cl 56h or a SND NKE to address 253 AA EP ED P IPIP 2CMC481035D0001 Page 35 of 54 DELTAsingle meter User s Manual Rev Error Style not defined 6 1 4 TELEGRAMS The communication can be divided in two parts One part is reading data from the meter and the other part is sending data to it This section describes typical telegrams sent to and received from the DELTAsingle The data readout procedure starts when the master sends a REQ_UD2 telegram to the meter The meter responds with a RSP_UD telegram A typical readout is a multi telegram readout The last DIF in the user data part of the telegram is 1F to indicate that there is more data in the next telegram Using SND_UD telegrams data can be sent to the meter The following is possible to perform with SND_UD telegrams e S
53. ther confirms a correct reception with the single character acknowledge E5h or omits the confirmation if it did not receive the telegram correctly SND UD This procedure is used to send user data to the meter The meter either confirms a correct reception with the single character acknowledge E5h or omits the confirmation if it did not receive the telegram correctly Request Respond Procedure REQ UD2 RSP UD The master requests data from the meter using the REQ_UD2 telegram The meter will either transfer its data with RSP UD or gives no response indicating that the request has not been received correctly or that the address does not match The meter indicates to the master that there is more data in the next telegram by sending 1Fh as the last user data 6 1 3 2 1 Selection and Secondary Addressing It is possible to communicate with the meter using secondary addressing The secondary addressing takes place with help of a selection Structure of a telegram for selecting a meter The master sends a SND UD with the control information 52h to the address 253 FDh and fills the specific meter secondary address identification number manufacturer version and medium with the values of the meter that is to be addressed The address FDh and the control information 52h is the indication for the meter to compare the following secondary address with its own and to change into the selected state should it match In this case the meter answe
54. tion Field Extension ee Be S aS Extension LSB of Function Field Data Field Bit storage Length and coding of data number Structure of the Data Information Field DIF The Extension Bit is set when next byte is a DIFE The LSB of storage number is normally set to 0 to indicate actual value 1 stored value The Function Field is always set to 00 indicating instantaneous value The Data Field shows the format of the data Code Meaning i Length in Byte 0000 Nodaa 0 ariable Coding of the Data Field Biz e 5 Ode B i1 Unit Tariff Storage Number Structure of the Data Information Field Extension DIFE Extension Bit The Extension Bit is set when next byte is a DIFE Unit is used on power and energy values to tell what type of power energy the data is Tariff is used on energy values to give tariff information 0 Total 1 4 Tariff 1 4 Storage Number is normally set to 0 to indicate actual value gt 0 stored value Ak EP ED PAIPIP 2CMC481035D0001 Page 32 of 54 DELTAsingle meter User s Manual Rev Error Style not defined e Value Information Block VIB The VIB follows a DIF or DIFE without a set extension bit It contains one Value Information Field VIF and is in some cases expanded with up to 10 Value Information Field Extensions VIFE Bitz Je l5 dle B 21725 ji J 0 9 Value Information Bit Structure of the Value Information Fiel
55. ts then starts flashing and is increased for every short press possible values 1 12 on the SCROLL button The chosen value is confirmed by pressing the SET button AA EP ED P IPIP 2CMC481035D0001 Page 17 of 54 DELTAsingle meter User s Manual Rev Error Style not defined The year tens digit then starts flashing and is increased for every short press possible values 0 9 on the SCROLL button The chosen value is confirmed by pressing the SET button The year unit digit then starts flashing and is increased at every short press possible values 0 9 on the SCROLL button When the chosen value is confirmed by pressing the SET button the new date is set 2 7 3 4 Communication port Allows opening the communication port for setting date time and programming of the tariff switch schedule When the SET button is pressed while the state of communication port access rights is displayed in Set mode Ak EP ED P IPIP 2CMC481035D0001 Page 18 of 54 DELTAsingle meter User s Manual Rev Error Style not defined For every short press on the SCROLL button the state switches between open and closed When the chosen state is confirmed by pressing the SET button the state is set 2 8 PULSE OUTPUT As an option the DELTAsingle meter can be equipped with an pulse output for active ener
56. umbers see chapter 7 4 1 1 DIN RAIL MOUNTED The DELTAsingle is aimed to be mounted on a DIN rail designed according to the standard CEI IEC 715 In this case no extra accessories are needed and the meter is fastened on the rail so that the metal snap piece on the back of the meter snaps onto the rail 4 1 2 WALL MOUNTED The recommended way to mount the meter on a wall is to mount a separate DIN rail see picture below on the wall and mount the meter on this AA EP ED PADDED 2CMC481035D0001 Page 25 of 54 DELTAsingle meter User s Manual Rev Error Style not defined Fig 4 1 DIN rail used for wall mounting 4 2 WIRING DIAGRAMS Below is described how to connect the meters to the electricity network The DELTAsingle must always be protected by fuses on the incoming side 4 2 1 VOLTAGE AND CURRENT 1 31111 Fig 4 2 Wiring diagram 4 2 2 PULSE OUTPUT WHEN APPLICABLE f L H 20 21 Fig 4 3 Pulse output connection diagram AA EP ED P IPIP 2CMC481035D0001 Page 26 of 54 DELTAsingle meter User s Manual Rev Error Style not defined 5 MEASUREMENT METHOD The DELTAsingle is a direct connected single phase meter measuring the active energy consumption in a 2 wire installation see figure below U Load Fig 5 1 Single phase measurement The metering calculation in the meter is done digitally b
57. ure of the Fixed Data Header Identification Number is the 8 digit serial number of the meter BCD coded Manufacturer is set to 0442h meaning ABB Version specifies the version of the protocol implementation Medium byte is set to 02h to indicate electricity Access Number is a counter that counts successful accesses Status byte is used to indicate the meter status Meter busy Internal error Power low 6 NOTUSED DELTAsingle specific e Signature is set to 00 OOh AA EP ED PFPXIPID 2CMC481035D0001 Page 31 of 54 DELTAsingle meter User s Manual Rev Error Style not defined Data Records The data together with information regarding coding length and the type of data is transmitted in data records The maximum total length of the data records is 234 bytes Data Record Header DRH Data Data Information Block DIB Value Information Block VIB DIFE VIFE 1 Byte 0 10 Bytes 1 Byte 0 10 Bytes 0 n Bytes Structure of a Data Record transmitted from left to right Each data record consists of a data record header DRH and the actual data The DRH in turn consists of the data information block DIB to describe the length type and coding of the data and the value information block VIB to give the value of the unit and the multiplier Data Information Block DIB The DIB contains at least one byte Data Information Field DIF and is in some cases expanded with a maximum of 10 DIFE s Data Informa
58. utton short scroll To activate the change procedure the SET button is pressed when the set item to be changed is displayed The hand symbol CR is flashing while the change procedure is active Doing a long scroll while the set operation is pending lets you to exit without altering the setting When all settings have been done the Normal mode is reached by doing a long scroll Below are listed the different settings that can be modified in Set mode and the change operation procedure 2 7 3 4 Primary address Allows setting of the M bus primary address When the SET button is pressed while the primary address is displayed in Set mode AL EP ED PADDED 2CMC481035D0001 Page 14 of 54 DELTAsingle meter User s Manual Rev Error Style not defined The first digit is increased by 1 for every short press on the SCROLL button Possible values for the first digit are 0 2 The chosen value is confirmed by pressing the SET button The same procedure is then done for the 2 other digits possible values for these two digits are 0 9 When the last digit is confirmed the meter will start to use the new address It is only possible to select valid addresses 1 to 250 2 7 3 2 Time Allows setting of the time When the SET button is pressed while the time hour minute second is displayed in Set mode the hand symbol 7 and the hour digits starts f
59. v Error Style not defined Position 4 Label with wiring diagram for the terminals Position 5 and 16 LED and LED frequency The meter has a red Light Emitting Diode that flashes in proportion to the consumed energy Position 6 Terminal block The voltage and current measured by the meter is connected here Position 7 Sealing points The meter can be provided with two sealable covers with two sealable points on each where thread seals can be used to seal the meter covers all meter connections and the SET button Position 8 LCD A 6 digit Liquid Crystal Display showing data and settings Position 9 Optical port For use of external communication devices Position 10 Sealing tape A piece of tape sealing the meter which will leave traces on the meter in case it is broken Position 11 Terminals Made for solid stranded and flexible cables Position 12 Numbering of terminals Position 13 Pulse output Terminals for pulse output Position 14 Stripping length Showing the stripping length of the cables Position 15 DIN rail lock Used for fixing the meter on the DIN rail 2 3 METER TYPES The DELTAsingle product family is divided into two groups e Direct connected meters for current lt 80A e Direct connected meters for current x 80A with tariffs The meter type is reflected on the product label see figure below Type designation Voltage Frequency Network type Nominal and maximum current and a
60. ws VIF for units kWh with resolution 0 01kWh 2dec 1000 0100 0b100 4 10 4 3 10 0 01k Unit is Wh VIFE will follow VIFE status OXXx XXXX Error code No VIFE follows XXXXXXXXXXXX_ Active energy Tariff 2 kWh with two decimals and LSB first AL EP ED PADDED 2CMC481035D0001 Page 42 of 54 DELTAsingle meter User s Manual Rev Error Style not defined Byte Size Value Description Explanation No in bytes 1 DIF size 12 digit BCD 1x00 1110 12 digit BCD Instantaneous value LSB of storage number DIFE will follow Tariff 3 0011 xxxx Storage number continued Same device no sub unit No DIFE follows 6 62 63 64 VIF for units kWh with resolution 0 01kWh 2dec 1000 0100 0b100 4 10 4 3 10 0 01k Unit is Wh VIFE will follow VIFE status Oxxx XXXX Error code 65 70 No VIFE follows XXXXXXXXXXXX Active energy Tariff 3 kWh with two decimals and LSB first 71 DIF size 12 digit BCD x00 1110 12 digit BCD Instantaneous value LSB of storage number DIFE will follow Tariff 4 000 xxxx Storage number continued Tariff 4 LSB Same device no sub unit DIFE will follow 0001 0000 Storage number continued Tariff 4 MSB Same device no sub unit No DIFE follows VIF for units kWh with resolution 0 01kWh 2dec 1000 0100 0b100 4 10 4 3 10 0 01k
61. y a microcontroller according to the formula E X keu neT ei neT n 0 1 2 k is a calibration constant u the voltage and i the current The voltage and current signals are sampled regularly once every time interval T by an analog to digital converter and via software multiplied together to give an amount of energy This energy is accumulated to an energy register E which keeps track of the total energy or accumulated in several registers if it is tariff meter AA EDER PADDED 2CMC481035D0001 Page 27 of 54 DELTAsingle meter User s Manual Rev Error Style not defined 6 COMMUNICATION Reading a meter through a communication interface gives a number of advantages compared to manual reading e The time it takes to read a number of meters is much shorter This makes it also possible to perform continuous readings e The risk of getting wrong values because of mistakes during manual reading is reduced to a minimum e The values are stored electronically which makes it easier to process them further All DELTAsingle have an optical interface on the left side of the meter For communication via the optical interface the M Bus protocol is used This chapter describes the M Bus communication 6 1 M BUS The M Bus Meter Bus is a bus system for the remote reading of meters It is a master slave system for communication on twisted pair where all meters are slaves 6 1 1 COMMUNICATION OBJECTS Register Description Active

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