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AcuDC 210/220 Series

Chapter 4 Communication

……………………………………………………………………4

4.1 Modbus Protocol Introduction……………………………………………………………

4.2 Communication Format…………………………………………………………………5

4.3 AcuDC 210/220 Address Table…………………………………………………………… 6

…………………………………………………………………………………………6

Appendix A Technical Data and Specifications………………………………………………6

Appendix B Ordering Information……………………………………………………………7

Appendix C Hall Effect Sensor Specifications…………………………………………………7

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Содержание AcuDC 210 Series

Страница 1: ...AcuDC 210 220 Series Power Meter User s Manual Your Power and Automation Partner...

Страница 2: ......

Страница 3: ...t of Accuenergy The information contained in this document is believed to be accurate at the time of publication however Accuenergy assumes no responsibility for any errors which may appear here and r...

Страница 4: ...be followed to reduce the risk of electric shock and danger to personal health Potential Danger Symbol Carries information about nearby hazards Safety operation procedures must be followed to avoid pe...

Страница 5: ...C 210 220 Series training and should have experience with high voltage and current devices Accuenergy shall not be responsible or liable for any damages caused by improper meter installation and or op...

Страница 6: ...tallation 5 2 1 Appearance and Dimensions 6 2 2 Installation Method 8 2 3 AcuDC 210 220 Wiring Diagrams 14 2 3 1 Auxiliary Power Requirements 15 2 3 2 Voltage and Current Input 17 2 3 3 I O Setting 22...

Страница 7: ...49 4 1 Modbus Protocol Introduction 50 4 2 Communication Format 54 4 3 AcuDC 210 220 Address Table 62 Appendix 67 Appendix A Technical Data and Specifications 68 Appendix B Ordering Information 72 Ap...

Страница 8: ...m s stability and reliability by providing real time power quality monitoring and analysis When you open the package you will find the following items 1 AcuDC 210 220 series meter 1 2 Removable 14 pin...

Страница 9: ...ter 2 Installation and wiring details of AcuDC 210 220 meter Chapter 3 Real time metering data display and parameter setting method of AcuDC 210 220 meter Chapter 4 Communication protocol format and a...

Страница 10: ...VIII AcuDC 210 220 Series...

Страница 11: ...1 AcuDC 210 220 Series 1 1 AcuDC 210 220 Overview 1 2 Application Areas 1 3 AcuDC 210 220 Series Chapter 1 Introduction 1...

Страница 12: ...rovides clear real time monitoring data readout This DC meter is designed to meet the requirement for DC power measurement and monitoring Compact Size and Easy Installation With the size of DIN96 48 a...

Страница 13: ...ad in a dim environment The backlight ON time duration is programmable High safety high reliability AcuDC 210 220 meter was designed according to industry standards The meter receives IEC emission and...

Страница 14: ...contain certain functions please refer to the following table for details Function Parameter AcuDC 221 AcuDC 222 AcuDC 223 AcuDC 211 AcuDC 212 AcuDC 213 Measuring Voltage V Current I Power P Energy E...

Страница 15: ...ies Chapter 2 Installation 2 1 Appearance and Dimensions 2 2 Installation method 2 3 AcuDC 210 220 Wiring Diagram 2 3 1 Auxiliary Power Requirement 2 3 2 Voltage and Current Input 2 3 3 I O Setting 2...

Страница 16: ...es 2 1 Appearance and Dimensions The installation method is introduced in this chapter Please read this chapter carefully before installation work Appearance Figure2 1 Appearance of AcuDC 210 220 mete...

Страница 17: ...ounting onto a panel 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 Key Cover Can be closed to limit access to ke...

Страница 18: ...ion mm inch Figure 2 2 Dimension of AcuDC 210 220 2 2 Installation Method Environment Before installation please make sure that the environment meets the following conditions 96 00 48 00 60 00 71 00 4...

Страница 19: ...normal performance or damaging meter permanently AcuDC 210 220 meter s storage range is from 40 C to 85 C 2 Humidity AcuDC 210 220 meter s working humidity range is from 0 to 95 non condensing 3 Locat...

Страница 20: ...210 220 Series meter is typically installed on the panel of switch gear 1 Cut a rectangular hole on the panel of the switch gear The cutting size is as fig 2 3 Unit mm inch Fig 2 3 Panel Cutting 90 0...

Страница 21: ...meter and insert the meter into the rectangular hole from the front side Fig 2 4 Put the meter into the rectangular hole 3 Install clips back to the meter from the backside and push the clip tightly s...

Страница 22: ...quired for Installation There should be enough spacing for users to run wires to the meter install and remove wiring terminal connectors and operate the meter without interfering or damaging nearby eq...

Страница 23: ...13 AcuDC 210 220 Series Fig 2 6 Space around the meter temperature Minimum distance mm a b c d e f 50 C 25 25 38 64 25 25 50 C 38 38 51 76 38 38 Side Table 2 2 Minimum Space...

Страница 24: ...s and Communication terminals Bottom diagram Power Voltage Input and Current Input ports Note NC means no connection Fig 2 7 Wiring terminals DIGITAL INPUTS AO RELAY OUTPUTS RS 485 DI1 DI2 DI3 DI4 DIC...

Страница 25: ...cuDC 210 220 series meter 1 Standard 100 240Vac 50 60Hz or 100 300Vdc 2 Low Voltage DC Option 20 60Vdc The 2 options must be chosen according to the application Please see the ordering information app...

Страница 26: ...device for the equipment A fuse typical 1A 250Vac should be used in auxiliary power supply loop No 3 terminal must be connected to the ground terminal of switch gear 1 2 3 AcuDC 210 220 Power Supply...

Страница 27: ...roblem in the power supply Fig 2 9 power supply under EMI filter Choice of power supply wire could be AWG22 16 or 0 6 1 3mm2 2 3 2 Voltage and Current Input Voltage is directly input into the meter or...

Страница 28: ...for current 1 Direct Input shown in Fig 2 11 2 Current Shunt option shown in Fig 2 12 3 Hall Effect Sensor option shown in Fig 2 13 AcuDC 210 220 Voltage Wiring using Voltage Hall Effect Sensor 3 V V...

Страница 29: ...19 AcuDC 210 220 Series 7 I I AcuDC 210 220 vdc vdc Load Fig 2 11 Current direct input wiring Fig 2 12 Current input wiring with Shunt 8...

Страница 30: ...in Fig 2 14 2 15 and 2 16 represent different scenarios in which both voltage input and different current input options are used Fig 2 17 is voltage and current input with voltage and curret Hall Effe...

Страница 31: ...210 220 Series AcuDC 210 220 5 6 7 8 Fig 2 15 Voltage and Current input with Shunt Fig 2 14 Voltage and Current direct input Note The shunt should be placed at negative side of load AcuDC 210 220 5 6...

Страница 32: ...20 Current Hall Effect Sensor Voltage Hall Effect Sensor Load Vdc Vdc 7 8 V V I I Input Output Output External DC Power External DC Power _ _ _ 5 Load AcuDC 210 220 Current Hall Effect Sensor Vdc Vdc...

Страница 33: ...han 10A the current signal wire used is AWG 15 16 or 1 5 2 5mm2 or the same resistance rated wire 2 3 3 I O Setting Digital Input External power supply is required for the 4 Digital Inputs if equipped...

Страница 34: ...imum currert for the circuit must not be over 20mA Wires with cross section of 0 6 1 5mm2 AWG 16 22 should be used for DI Relay Output Two relay outputs RO R11 R12 terminal 16 17 and R21 R22 terminal...

Страница 35: ...atus are available ON and OFF For momentary mode output of the relay changes from OFF to ON for a time interval of Ton then goes back to OFF Ton can be set from 30 5000ms Output mode and pulse width c...

Страница 36: ...0mA or 0 5V but the input range can be set for different applications Setting procedure is as follows Analog output settings can be modified by pressing the front panel keys on all AcuDC 210 220 Serie...

Страница 37: ...output out upper limit U and lower limit L and measuring value M is as follows 1 Voltage output option for AO out M L U L 5V 2 Current output option for AO out 4 M L U L 16mA Two examples will be use...

Страница 38: ...V 2 Example 2 Current output option for AO Set AO to track power upper limit is 10kW lower limit is 4kW when the measuring value is 6kW the AO output should be out 4 M L U L 16mA 4 300 0 600 0 16mA 9...

Страница 39: ...Output Current 20mA 2 3 4 Communication AcuDC 210 220 series uses RS485 serial communication and the Modbus RTU protocol The terminals of communication are A B and S 20 21 22 A is differential signal...

Страница 40: ...a collector or RTU If the master does not have an RS485 communication port a converter such as a RS232 RS485 or a USB RS485 converter will be required Typical RS485 network topologies include line cir...

Страница 41: ...e communication quality is distorted 2 Circle AcuDC 210 220 meters are connected in a closed circle for the purpose of high reliability No anti signal reflecting resistor is needed for circle mode Fig...

Страница 42: ...n quality Fig 2 23 Star mode A few points of recommendation for high quality communication are as follows Good quality shielded twisted pair of cable AWG22 0 6mm2 or larger is very important 232 485 R...

Страница 43: ...oid T connection at each point Keep cables away as much as possible from sources of electrical noise An anti signal reflecting resistor typical value 120 300ohm 0 25W is normally added to the end of t...

Страница 44: ...34 AcuDC 210 220 Series...

Страница 45: ...3 1 Display Panel and Keys 3 2 Real Time Metering Mode 3 3 Parameter Setting Mode Chapter 3 Basic Operation and Setup 35...

Страница 46: ...lay segments are illustrated in fig 3 1 Fig 3 1 All Display Segments Table 3 1 Display Panel Description Number Display Description 1 Data and Parameters Display metering data in metering mode 2 Unit...

Страница 47: ...ct A stands for tracking current and V stands for tracking voltage 6 Time for Backlight When icon is on it indicates the time set for backlight 7 Communication Icon When blinks it indicates that commu...

Страница 48: ...del LCD display backlight will turn on for the preset amount of time when any one of the four keys is pressed Press V A First screen Voltage display page Voltage display U 220 3V Communication establi...

Страница 49: ...t P 350 6KW DI1 DI3 are close DI2 DI4 are open Communication established Press E Energy display page The picture shows E 32768 9Kwh all DIs are open Communication established Note When the energy is g...

Страница 50: ...setting mode Parameter setting mode is password protected Before entering the password and getting into the parameter setting mode the meter s device communication address will display for 3 seconds a...

Страница 51: ...re is no need to change the address Note No more than two meters can have the same communication address on the same communication line according to the Modbus RTU protocol The second screen Baud rate...

Страница 52: ...or Hall Effect Sensor For instance 100mV shunt enter 100 5V Hall Effect Sensor enter 5 20mA Hall Effect Sensor enter 20 AcuDC 210 220 series support 50 100mV arbitrary voltage shunt If it exceeds thi...

Страница 53: ...to Analog output in chapter two for detailed information The sixth screen AO tracking lower limit setting page The seventh screen AO tracking upper limit page Fig 3 13 AO tracking lower limit Fig 3 1...

Страница 54: ...ime can be set from 0 to 120 minute The backlight will always be ON if the setting value is 0 As in fig 3 16 the setting time of the backlight is 5 minutes The backlight will automatically turn OFF if...

Страница 55: ...inishing all of the settings press and V A keys to exit the setting mode Alarming AcuDC 210 220 Series meter can be used for alarming Over under limit alarm will be triggered when the metering paramet...

Страница 56: ...limit value 5 Sign of inequality selection 6 RO alarm channel selection 0 RO1 1 RO2 2 RO1 RO2 Alarming parameters Address Parameter Range 0105H RO1 output mode 0 level 1 pulse 2 alarming 0106H Pulse...

Страница 57: ...with a time delay of 15 seconds we should set the alarm parameters as follows 1 Set RO1 output mode to 2 This means RO1 works under alarming mode 2 Set alarming object to 2 current The alarming limit...

Страница 58: ...annel is set as 2 and RO1 is set to alarming mode when an alarm condition is met the alarm signal will be sent to both of the relay outputs but only RO1 will be triggered since RO2 is not in alarming...

Страница 59: ...49 AcuDC 210 220 Series 4 1 Modbus Protocol Introduction 4 2 Communication Format 4 3 AcuDC 210 220 Address Table Chapter 4 Communication and Setup 49...

Страница 60: ...on net The others are slave devices waiting for the query of the master Only the master device can communicate with slave devices The slave devices cannot communicate with each other They can only res...

Страница 61: ...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 respondin...

Страница 62: ...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...

Страница 63: ...parity check method used for the individual characters of the message The CRC field is two bytes long containing a 16 bit binary value The CRC value is calculated by the transmitting device and is ap...

Страница 64: ...on will be taken 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 s current value and the process rep...

Страница 65: ...0H 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 r...

Страница 66: ...ay status for the meter with communication address 17 Addr Fun DO start reg HI DO start reg LO DO of regs HI DO of regs LO CRC16 HI CRC16 LO 11H 01H 00H 00H 00H 02H BFH 5BH Response The meter response...

Страница 67: ...content of the data is 7 6 5 4 3 2 1 0 0 0 0 0 0 0 1 0 MSB LSB Relay 1 OFF Relay 2 ON 2 Read Status of DI Function Code 02 Query 1 On 0 Off There are 4 DIs in the meter The address of each DI is DI1 0...

Страница 68: ...quantity of data characters the data characters and error checking An example response to read the status of 4 DIs is shown in Table 4 7 The DI status corresponds to the last 4 bits of the data DI1 bi...

Страница 69: ...0200H Addr Fun Data start addr HI Data start Addr LO Data of regs HI Data of regs LO CRC16 HI CRC16 LO 01H 03H 02H 00H 00H 01H 85H B2H Response The meter response includes the meter address function c...

Страница 70: ...ther values are invalid and will not affect that relay The example below is a request to the meter number 1 to turn on Relay1 Addr Fun DO addr HI DO addr LO Value HI Value LO CRC16 HI CRC16 LO 01H 05H...

Страница 71: ...arming value 1000 alarming delay 4s and alarming output to RO1 Addr Fun Data start reg HI Data start reg LO Data of reg HI Data of reg LO Byte Count 01H 10H 01H 0BH 00H 03H 06H Value1 HI Value1 LO Val...

Страница 72: ...ameter Range Object Type Type of Access 0200H 0201H Voltage V 0 1200V Float R 0202H 0203H Current I 0 9999A Float R 0204H 0205H AO output 0 24mA current type 0 6V Voltage type Float R 0206H 0207H Powe...

Страница 73: ...Object Type Type of Access 0100H Access Code 0 9999 Word R W 0101H Address 1 247 Word R W 0102H Baud rate 1200 19200 Word R W 0103H Shunt full range current input 0 9999 A input range of Shunt Hall Ef...

Страница 74: ...ge 2 current 3 power 010CH Sign of inequality 0 1 Word R W 010DH Alarming delay time 0 255 s Word R W 010EH RO alarm channel 0 RO1 1 RO2 2 RO1 RO2 Word R W 010FH 0110H Alarming value The same as readi...

Страница 75: ...e of Access 0000H DI1 1 ON 0 OFF Bit R 0001H DI2 1 ON 0 OFF Bit R 0002H DI3 1 ON 0 OFF Bit R 0003H DI4 1 ON 0 OFF Bit R Relay Status and Control Function code 01 for Reading 05 for Controlling Address...

Страница 76: ...r signed integer of 16 bit Dword unsigned integer of 32 bit 2 Type of access R Read only Relay Output RO status Digital Input DI status and general measurement parameters can be read from memory using...

Страница 77: ...Appendix A Technical Data and Specifications Appendix B Ordering Information Appendix C Hall Effect Sensor Specifications Appendix 67...

Страница 78: ...600V Current 0 2 0 005A 0 005 9999A Power 0 5 0 01W 0 01 6 000 000W Energy 0 5 0 1kWh 0 1 99999 9kWh 2 Communication Parameter Description Type RS485 Half Duplex Optical isolated Baud Rate 1200 19200b...

Страница 79: ...dc Max Load Current 3A Contact Resistance 100m Max Isolate Voltage 4000Vac Contact Material silver alloy Mechanical Endurance 5 106 cycles Output Form latching or pulse 30 to 5000ms or alarming Analog...

Страница 80: ...V Programmable Hall Current Thruster HCT 0 5V 0 4V 0 20mA 4 20mA Power Consumption 2W Max Accuracy 0 2 Voltage Input Voltage 0 600V Input Impedence 2M Load 0 2W Digital Input DI Isolate Voltage 2500Va...

Страница 81: ...Parameter Description Humidity 0 95 Non condensing Temperature 25 C 70 C Package Size 165mm 70mm 115mm Weight 0 4Kg 6 Power Supply Parameter Description Input Option 1 100 240Vac 50 60Hz 100 300Vdc Op...

Страница 82: ...Current Input 0 10Amp A1 Current Shunt Input Option 50 100mV A2 Hall Element Input Option 4 20mA A3 Hall Element Input Option 0 5V 300V Nominal Input Volage 300 Vdc 600V Nominal Input Volage 600 Vdc...

Страница 83: ...ires an isolation the voltage input can be selected as Via Hall Effect Sensor 0 5 V The Voltage Hall Effect Sensor requires 0 5 V 2 Hall Effect Sensors need external 15Vdc power supply which the custo...

Страница 84: ...t in this manual 1 03 20090610 Revise content 1 20 20100422 Revise content 1 21 20100830 Change the address of Energy parameter 1 22 20120727 Update the wiring diagram Update the method for generating...

Страница 85: ...Accuenergy Corporation Los Angeles Toronto Beijing North America Toll Free 1 877 721 8908 Web www accuenergy com Email marketing accuenergy com...

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