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V

AcuDC 200 Series

Chapter 4 Communication

……………………………………………………………………47

4.1 Modbus Protocol Introduction……………………………………………………………48
4.2 Communication Format…………………………………………………………………52
4.3 AcuDC 200 Address Table………………………………………………………………… 60

Appendix

…………………………………………………………………………………………65

Appendix A Technical Data and Specification………………………………………………66
Appendix B Ordering Information……………………………………………………………70
Appendix C Hall Effect Sensor Specifications…………………………………………………72
Appendix D Revision Information……………………………………………………………76

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Содержание AcuDC 200 Series

Страница 1: ...AcuDC 200 Series Power Meter User s Manual Your Power and Automation Partner...

Страница 2: ......

Страница 3: ...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 res...

Страница 4: ...lectric shock and danger to personal health Potential Danger Symbol Carries information about nearby hazards Safety operation procedures must be followed to avoid personal injuries Alarm Symbol Carrie...

Страница 5: ...III AcuDC 200 Series Accuenergy shall not be responsible or liable for any damages cause by improper meter installation and or operation...

Страница 6: ...tion 5 2 1 Appearance and Dimensions 6 2 2 Installation Method 8 2 3 AcuDC 200 Wiring Diagram 14 2 3 1 Auxiliary Power Requirement 15 2 3 2 Voltage and Current Input 17 2 3 3 I O Setting 22 2 3 4 Comm...

Страница 7: ...otocol Introduction 48 4 2 Communication Format 52 4 3 AcuDC 200 Address Table 60 Appendix 65 Appendix A Technical Data and Specification 66 Appendix B Ordering Information 70 Appendix C Hall Effect S...

Страница 8: ...and analysis When you open the package you will find the following items 1 AcuDC 200 series meter 1 2 Removable 14 pin terminal 1 3 Installation clips 2 4 User s manual 1 5 Maintenance guarantee card...

Страница 9: ...of AcuDC 200 meter Chapter 3 Real time metering data display and parameter setting method of AcuDC 200 meter Chapter 4 Communication protocol format and address table of AcuDC 200 Appendix Technical...

Страница 10: ...VIII AcuDC 200 Series...

Страница 11: ...1 AcuDC 200 Series 1 1 AcuDC 200 Overview 1 2 Application Area 1 3 AcuDC 200 Series Chapter 1 Introduction 1...

Страница 12: ...ides clear real time monitoring data readout This DC meter is designed to meet the requirement for DC power measurement and monitoring Small Size and Easy Installation With the size of DIN96 48 and 71...

Страница 13: ...under dim environment The backlight ON time duration is programmable High safety high reliability AcuDC 200 meter was designed according to industry standards The meter receives IEC and UL emission an...

Страница 14: ...ain 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 I O...

Страница 15: ...ies Chapter 2 Installation 2 1 Appearance and Dimensions 2 2 Installation method 2 3 AcuDC 200 Wiring Diagram 2 3 1 Auxiliary Power Requirement 2 3 2 Voltage and Current Input 2 3 3 I O Setting 2 3 4...

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 200 meter Ac...

Страница 17: ...g 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 Close the cover to avoid wrong key operat...

Страница 18: ...ion mm inch Figure 2 2 Dimension of AcuDC 200 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 48 00...

Страница 19: ...abnormal performance or damaging meter permanently AcuDC 200 meter s storage range is from 40 C to 85 C 2 Humidity AcuDC 200 meter s working humidity range is from 0 to 95 non condensing 3 Position Ac...

Страница 20: ...200 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 5 0...

Страница 21: ...ter 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 so...

Страница 22: ...ired 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 equi...

Страница 23: ...13 AcuDC 200 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: ...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 AO AO...

Страница 25: ...DC 200 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 appendix...

Страница 26: ...reach of the operator It shall be marked as the disconnecting 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 gro...

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: ...ations 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 240 Voltage Wiring using Voltage Hall Effect Sensor 3 V...

Страница 29: ...19 AcuDC 200 Series 7 I I AcuDC 200 vdc vdc Load 8 7 I I AcuDC 200 vdc vdc Load shunt 75mV 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: ...dc 7 8 V V I I Input Output Output External DC Power External DC Power _ _ _ 5 Load AcuDC 200 Current Hall Effect Sensor Vdc Vdc 8 6 7 V V I I Output External DC Power _ AcuDC 200 5 6 7 8 AcuDC 200 5...

Страница 32: ...than 10A the current signal wire choose AWG 15 16 or 1 5 2 5mm2 or the same resistance rate wire 2 3 3 I O Setting Digital Input External power supply is required for the 4 Digital Inputs if equipped...

Страница 33: ...um 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 18...

Страница 34: ...us 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 can...

Страница 35: ...or 0 5V but the input range can be set due to different applications Setting procedure is as follows Analog output settings can be modified by pressing the front panel keys on all AcuDC 200 Series mo...

Страница 36: ...utput 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 used...

Страница 37: ...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 33...

Страница 38: ...Output Current 20mA 2 3 4 Communication AcuDC 200 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 B is...

Страница 39: ...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 circ...

Страница 40: ...eter if the communication quality is distorted 2 Circle AcuDC 200 meters are connected in a closed circle for the purpose of high reliability No anti signal reflecting resistor is needed for circle mo...

Страница 41: ...unication 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 2...

Страница 42: ...id 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 th...

Страница 43: ...3 1 Display Panel and Keys 3 2 Real Time Metering Mode 3 3 Parameter Setting Mode Chapter 3 Basic Operation and Setup 33...

Страница 44: ...y segments are illustrated in fig 3 1 Fig 3 1 All Display Segments Table 3 1 Display Panel Description Numer Display Description 1 Data and Parameters Display metering data in metering mode 2 Unit Ico...

Страница 45: ...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 communi...

Страница 46: ...CD 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 established...

Страница 47: ...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 gre...

Страница 48: ...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...

Страница 49: ...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 s...

Страница 50: ...Hall Effect Sensor For instance 100mV shunt enter 100 5V Hall Effect Sensor enter 50 20mA Hall Effect Sensor enter 20 AcuDC 200 series support 50 100mV arbitury voltage shunt If it exceeds this range...

Страница 51: ...to Analog output in chapter two for detail 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 12 A...

Страница 52: ...time 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 i...

Страница 53: ...inishing all of the settings press and V A keys to exit the setting mode Alarming AcuDC 200 Series meter can be used for alarming Over under limit alarm will be triggered when the metering parameter v...

Страница 54: ...imit 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 wi...

Страница 55: ...th 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 va...

Страница 56: ...nel 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 mo...

Страница 57: ...47 AcuDC 200 Series 4 1 Modbus Protocol Introduction 4 2 Communication Format 4 3 AcuDC 200 Address Table Chapter 4 Communication and Setup 47...

Страница 58: ...t 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 response...

Страница 59: ...he slave address in the address field of the message When the slave sends its response it places its own address in this address field of the response to let the master know which slave is responding...

Страница 60: ...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 w...

Страница 61: ...arity 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 appe...

Страница 62: ...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 repea...

Страница 63: ...The meaning of each abbreviated word is Addr Address of slave device Fun Function code Data start reg HI Start register address high byte Data start reg LO Start register address low byte Data of reg...

Страница 64: ...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 i...

Страница 65: ...ntent 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 000...

Страница 66: ...ty 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 bit0 DI2...

Страница 67: ...00H 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 cod...

Страница 68: ...er values are illegal 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 0...

Страница 69: ...ming 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 Value...

Страница 70: ...read metering data Address Parameter Range Object Type Type of Access 0200H 0201H Voltage V Float R 0202H 0203H Current I Float R 0204H 0205H AO output Float R 0206H 0207H Power Float R The relationsh...

Страница 71: ...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 72: ...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 reading...

Страница 73: ...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 P...

Страница 74: ...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 f...

Страница 75: ...Appendix A Technical Data and Specifications Appendix B Ordering Information Appendix C Hall Effect Sensor Specifications Appendix D Revision Information Appendix 65...

Страница 76: ...0V 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 19200bps...

Страница 77: ...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 o...

Страница 78: ...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 2500Vac...

Страница 79: ...rameter 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 Opti...

Страница 80: ...rent 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 48V...

Страница 81: ...es 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 custome...

Страница 82: ...Add content at P36 and P60 Add HCT content 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 wirin...

Страница 83: ...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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