User`s Manual - AYA Instruments
Contents
1. 9 10 11 12 13 14 15 17 18 20 21 22 Bottom diagram Power Voltage Input and Current Input ports Note NC means no connection Fig 2 7 Wiring terminals Safety Earth Connection Before setting up the meter s wiring please make sure that the switch gear has an earth ground terminal Connect both the meter s and the switch gear s ground terminal together The following ground terminal symbol is used in this user s manual 2 3 1 Auxiliary Power Requirement DANGEROUS Only the qualified personnel could do the wire connection work Make sure the power supply is cut off and all the wires are electroless Failure to observe it may result in severe injury There are 2 options for the Auxiliary Power Supply for the AcuDC 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 for further details The first option is mainly used under illumination power conditions the other is used under accumulator battery conditions Typical power consumption of the 15 senes 002 9qnov senes 00Z IANIY meter is less than 2W A regulator or a UPS should be used when the power supply undulates too much Pin number2. 0109H AO output Word Rw 2 current 3 power 010AH Backlight ON time 0 120minute Word R W 2 0 no 1 voltage 010BH Alarming object 2 current 3 power 010CH Sign of inequality 0 lt 1 gt Word R W 010DH Alarming delay time 0 255 s VVord R W 010EH RO alarm channel 0 RO1 1 RO2 2 RO1 RO2 Word R W 010FH 0110H Alarming value The same as reading data Float R W 0111H 0112H Lower limit of AO The same as reading data Float R W 0113H 0114H Upper limit of AO The same as reading data Float R W 0115H 0116H Energy presetting 0 9999999 Long R W uu 0 1200V Word RW Sensor Input 0118H Voltage Hall Effect 1 5V Word RAN Sensor Output Please refer to chapter 3 for more information Digital Iput DI Status Function code 02 for Reading Table 4 17 Digital Input DI Address Address Parameter Range Object Type Type of Access 0000H DI 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 0FF Bit R Relay Status and Control Function code 01 for Reading 05 for Controlling Table 4 18 Relay Address Address Parameter Range Object Type Type of Access 0000H DO1 1 ON 0 OFF Bit R W 0001H DO2 1 0 OFF Bit R W senes 002 9qnov senes 002 9qnov Analog output Function code 03 for Reading 16 for Presetting Table 4 19 AO Address Address Paramete
3. Cut a rectangular hole on the panel of the switch gear The cutting size is as fig 2 3 Unit mm inch 405 44700 90 35 0 5 Fig 2 3 Panel Cutting 0 5 2 Remove installation clips from the 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 so that the meter is fixed on the panel senes 002 9qnov senes 00Z IANIY Fig 2 5 Use the clips to fix the meter on the panel Space required 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 equipment Recommended minimum space around the meter is shown in Table2 2 and Fig 2 6 Fig 2 6 Space around the meter Table 2 2 Minimum Space Minimum distance mm temperature a b f lt 50 C 25 25 38 64 25 25 250 C 38 38 51 76 38 38 senes 002 Janay senes 00Z 9qnov 2 3 AcuDC 200 Wiring Diagram There are two terminal strips at the back of AcuDC 200 Top diagram UO ports and Communication terminals E ip r Ir ur LI Lt Li DIGITAL INPUTS AO RELAY OUTPUTS RS 485 Di Di2 DI3 Di4 DIC AO AO R12 R21 B s
4. Industry Control Systems DC Energy Management Systems Large UPS Systems senes 002 9aqnov senes 00Z IANIY 1 3 AcuDC 200 Series This manual is based on AcuDC 223 Other models may not contain certain functions please refer to the following table for details Function Parameter AcuDC AcuDC AcuDC AcuDC AcuDC AcuDC 221 222 223 211 212 213 Voltage V e e e e M Current 1 e e e e easurin 9 Power P e e Energy E DI 1 0 opti O options RO o S 4 20 O Gen H o H o Alarm Communication RS485 MODBUS LCD display e e e e function option Blank NA Chapte r 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 Communication senes 002 9qnov 2 1 Appearance and Dimensions The installation method is introduced in this chapter Please read this chapter carefully before installation work Appearance PTE Figure2 1 Appearance of AcuDC 200 meter Table2 1 Part name of AcuDC 200 meter Part Name Description Enclosure The AcuDC 200 meter enclosure is made of high strength anticombustion engineering plastic Front Casing Visible portion for display and control after m
5. TV AV PY Ground AcuDC 200 AcuDC 200 AcuDC 200 ie i t WAY TV YAZ 1 1 AcuDC 200 AcuDC 200 AcuDC 200 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 6mm or larger is very important 31 senes 00Z IANIY The shield of each segment of the RS485 cable must be connected to the ground at one end only s Make sure the right connection of each point se Avoid 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 25VV is normally added to the end of the circuit beside the last meter if the communication quality is distorted s Use RS232 RS485 or USB RS485 converter with optical isolated output and surge protection 3 1 Display Panel and Keys 3 2 Real Time Metering Mode 3 3 Parameter Setting Mode 33 senes 002 IANIY 3 1 Display Panel and Keys The front of the meter consists of a LCD display panel and four control keys All the display segments are illustrated in fig 3 1 6 2 7 4 Fig 3 1 All Display Segments Table 3 1 Display Panel Description Data and Parameters Unit Icon Display metering data in metering mode Indicating metering data unit V for voltage A for current KW for Power Kwh for E
6. Voltage Wiring using Voltage Hall Effect Sensor Fig 2 10 Voltage wiring There are three wiring configurations 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 vdce vdc vdc vdc o AcuDC 200 shunt AcuDC 200 75mV H Load Load EJ Fig 2 11 Current direct input wiring Fig 2 12 Current input wiring with Shunt senes 002 9qnov senes 00Z IANIY Vdc Vdc Current Hall Effect Sensor m Output AcuDC 200 External DC Power Load Fig 2 13 Current input wiring with Hall Effect Sensor Wiring diagrams shown 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 Effect Sensors dcr Vdc Vdc Vdc e 5 U T Su a 9 6 U u AcuDC 200 6 u D AcuDC 200 2 l Load Load Fig 2 14 Voltage and Current direct input Fig 2 15 Voltage and Current input with Shunt C Vdc Vdc Vde Vdc Voltage Hall Effect Sensor L gt 5 V m Gy A Inpu
7. byte is appended first followed by the high order byte 4 2 Communication Format All examples shown in this chapter follows the same format of Table 4 3 All data is express in Hex Table 4 3 Protocol Format Addr Fun Data start Data start Data of Data of CRC16 CRC16 reg HI reg LO regs HI regs LO HI LO 11H 03H 01H 00H 00H 08H 47H 60H The meaning of each abbreviated word is Addr Address of slave device Fun Function code Data start reg HI Start register address high byte Data start reg LO Start register address low byte Data of reg HI Number of register high byte Data of reg LO Number of register low byte CRC16 HI CRC high byte CRC16 LO CRC low byte senes 002 9qnov senes 00Z 92qnov 1 Read Status of Relay Function Code 01 Query This function code is used to read status of relay in the meter 1 On 0 Off There are 2 relays in the meter The address of each relay is Relay1 0000H and Relay2 0001H The following query is to read the relay status for the meter with communication address 17 Table 4 4 Read the status of Relay1 and Relay2 Query Message Addr Fun DO start DO start DO of DO of CRC16 CRC16 reg HI reg LO regs HI regs LO HI LO 11H 01H 00H 00H 00H 02H BFH 5BH Response The meter response includes the meter address function code quantity of data byte the data and error checking An example response to read
8. to next screen Same baud rate should be used for all the meters on the same communication line 39 senes 002 Janay senes 00Z IANIY The third screen Shunt Hall Effect Sensor current input full range setting The value input is the full range current value for the Shunt or Hall Effect Sensor AcuDC 200 series support 1 9999A shunt The value range in this screen is 1 9999 Fig 3 10 Shunt current input full range setting The fourth screen Shunt Hall Effect Sensor output voltage setting The value input is the full range output voltage value for the Shunt or Hall Effect Sensor For instance 100mV Fig 3 11 Shunt Hall Effect Sensor output setting 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 the value will be reset to default 100 Our recommendation for shunt is 100mV shunt itis better for accuracy The value here for shunt the range is 50 100 for volage Hall Effect Sensor the range is 1 100 for current Hall Effect Sensor the range is 4 100 4 XmA and 0 XmA 40 types are not exchangable Fig 3 12 AO output setting Fig 3 13 AO tracking lower limit Fig 3 14 AO tracking upper limit The fifth screen AO output setting Please refer to Analog output in chapter two for detail information The sixth screen AO tracking lower limit setting page The seventh screen AO
9. tracking upper limit page 41 senes 00Z Janay SEES 00Z 9ANIY 42 Fig 3 15 Energy clear page Fig 3 16 Back light ON time The eighth screen Energy clear page It displays CLE and a digit at the same time No change will be made if the digit is set to 0 Energy will be reset after pressing V A if the digit is set to 1 The ninth screen Backlight ON time setting page The LCD display backlight will turn OFF after inactive for a period of time to conserve energy The ON 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 if no key activation within 5 minutes Fig 3 17 Voltage Hall Effect Sensor setting The tenth screen only when the meter voltage wiring is via voltage Hall Effect Sensor there will be this screen Otherwise there is no such screen The voltage input range is 0 1200Vdc Fig 3 17 shows the voltage input is 1000V The tenth screen Password setting page This is the last screen in setting mode The password can be changed in this page It is important to remember the new password As in fig 3 17 the password is 0001 Press V A to store the new password and return back to the first setting page After finishing all of the settings press T and V A keys to exit the setting mode Fig 3 17 Password setting Alarmin
10. 14 Metering data address table Address Parameter Range Object Type Type of Access 0200H 0201H Voltage V Float R 0202H 0203H Current Float R 0204H 0205H AO output Float R 0206H 0207H Power Float R The relationship between the numerical value in the register of AcuDC 200 and the real physical value is shown in table below Rx is the numerical value in register of the meter Table 4 15 Metering data convert table Parameter Relationship unit Voltage V Real Rx V Current Real Rx A Power Real Rx kW Energy Real Rx 100 kWh AO output Real Rx V or mA related with AO pattern Parameter Setting Function code 03 for Reading 16 for Presetting Table 4 16 System parameter address Address Parameter Range Object Type of Type Access 0100H Access Code 0 9999 Word R W 0101H Address 1 247 Word R W 0102H Baud rate 1200 19200 Word R W Shunt full range 1 0 9999 A input range of Shunt ind current input Hall Effect Sensor Word RW Shunt fullirange 0 No shunt HCT 1 100 Full 0104H 9 range output of shunt hall Word R W output voltage effect sensor 0105H RO1 output mode O level 1 pulse 2 alarming Word R W senes 002 9qnov senes 00Z JANY 0106H Pulse width of RO1 30 5000ms Word R W 0107H RO2 output mode 0 level 1 pulse 2 alarming Word R W 0108H Pulse width of RO2 30 5000ms Word R W
11. 85 communication port a converter such as a RS232 RS485 or a USB RS485 converter will be required seues 002 9qnov Typical RS485 network topologies include line circle and star wye 1 Line AcuDC 200 meters are connected one by one daisy chain format from the master in the RS485 net as in fig 2 20 232 485 Converter Shielded Cable Anti reflecting Resistor Rt Re Y DA MAVA r r AcuDC 200 AcuDC 200 AcuDC 200 Fig 2 21 Line mode senes 00Z IANIY As shown in Fig 2 20 an anti signal reflecting resistor typical value 120 300 ohm 0 25W is added to the end of the circuit beside the last AcuDC 200 meter 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 mode 232 485 Converter Shielded Cable gt i i I TAN 7 AcuDC 200 AcuDC 200 AcuDC 200 AZ AcuDC 200 AcuDC 200 AcuDC 200 Fig 2 22 Circle mode 3 Star When connecting AcuDC 200 meters in the Wye mode an anti signal reflecting resistor may be needed at the end of each line for better communication quality senes 002 9aqnov 232 485 Converter Shielded Cable Anti reflecting Resistor Rt 1 Bi
12. AcuDC 200 Series Power Meter User s Manual e OUT DC Power Meter Zieser ALLUZIVERGY Your Power and Automation Partner Copyright2012 V1 22 Accuenergy Tech Ltd This manual may not be altered or reproduced in whole or in part by any means without the expressed written consent 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 reserves the right to make changes without notice Please ask the local representative for latest product specifications before ordering Document 1501E2122 Revision Date Jul 2012 senes 002 9qnov S H S 00Z IANIY Please read this manual carefully before doing installation operation and maintenance of AcuDC 200 series DC meter Safety Alert Symbol Carries information about circumstances which if not Q considered may result in injury or death Electric Shock Symbol Carries information about procedures which must 4 be followed to reduce the risk of electric shock and danger to personal health DANGEROUS Potential Danger Symbol Carries information about nearby hazards Safety operation procedures must be followed to avoid personal injuries 2 Alarm Symbol Carries information about user operation procedures which A if not follow may cause malfunction of the meter and may result in injury gt Installation and maintenan
13. Introduction 1 1 AcuDC 200 Overview 1 2 Application Area 1 3 AcuDC 200 Series senes 00Z 9qnov 1 1 AcuDC 200 Overview Powerful Multifunction Power Meter AcuDC 200 Series multifunction intelligent power meter can measure DC voltage and current with high accuracy Analog output can be used in DCS system or industry control system Large character LCD display with backlight provides 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 x48 and 71mm depth after mounting the AcuDC 200 meter can be installed in a small gear Fixing clips are used for easy installation and removal Ease of Use AcuDC 200 utilizes a large character LCD display for clear electrical parameters readout All setting parameters are accessible by using front panel keys or communication port if equipped Setting parameters are protected in EEPROM which will maintain its content after the meter is powered off With the backlight of the LCD the display can be easily read 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 and immunity compliances and is able to operate reliably under high power disturbance condition 1 2 Application Area Solar and Wind Energy Systems
14. Output Two relay outputs RO R11 R12 terminal 16 17 and R21 R22 terminal 18 19 can be added to the meter as options ROs can be used as remote control electric switches in power systems Relay type is mechanical Form A contact with 3A 250V or 3A 30Vdc A mediate relay is recommended in the output circuit as in Fig 2 18 senes 002 9aqnov senes 00Z 9qnov mediate relay auxiliary power 4 Eq Ji amp AcuDC 200 R12 wires of mediate relay Fig 2 19 Relay Output The two relays in AcuDC 200 Series can be used to control field switches or other devices The maximum mechanical response time for the relay is 3ms Three output modes are available latching momentary and alarming For latching mode two output status 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 only be set through communication The alarming mode will be discussed in detail in the following chapter under the alarming section The wire of relay output should be chosen between AWG22 0 5mm AWG16 1 5mm Analog Output One analog output AO channel can be added to the AcuDC 200 meter as an option Two types of AO signals are available 4 20mA or 0 5V Each meter can only support one type of output either 4 20mA option or 0 5V option Please specify your analog ou
15. The receiving device recalculates the CRC value during reception of the message and compares the calculated value to the actual value it received in the CRC field If the two values are not equal an error will be reported CRC calculation is first started by preloading the whole 16 bit register to 1 s The process begins by applying successive 8 bit bytes of the message to the current contents of the register Only the eight bits of data in each character are 51 senes 002 9qnov senes 00Z 9qnov used for generating the CRC Start and stop bits and the parity bit do not apply to the CRC When generating the CRC each 8 bit character is exclusive ORed with the register contents The result is shifted towards the least significant bit LSB with a zero filled into the most significant bit MSB position The LSB is extracted and examined if the LSB equals to 1 the register is exclusive ORed with a preset fixed value if the LSB equals to 0 no action 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 repeats for eight more shifts as described above The final contents of the register after all the bytes of the message have been applied the final contents of the register which should exchange the high byte and the low byte is the CRC value When the CRC is appended to the message the low order
16. V A at the same time to exit the parameter setting mode Fig 3 6 Local address Fig 3 7 Password input 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 as shown in Fig 3 6 A four digit password 0000 to 9999 is required everytime before accessing the parameter setting mode The default password is 0000 The meter will return to the metering mode if a wrong password is entered Password input page shown in Fig 3 7 Fig 3 8 Communication Address Setting First Screen Communication address setting The address can be any integer between 1 and 247 As in fig 3 8 the communication address is 84 To change the address press cib to move cursor press P to increase the value by 1 and press E to decrease value by 1 Press V A to store the current address and go to the next setting screen Press V A to go to the next screen if there 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 Fig 3 9 Baud rate setting page The second screen Baud rate setting page Modbus RTU uses 8 data bit no parity 1 start bit and 1 stop bit Baud rate can be selected from one of the five values 1200 2400 4800 9600 19200bps Press P or E to select a suitable baud rate Press V A to go
17. ce of the AcuDC 200 series DC meter should only be performed by qualified competent personnel who receive appropriate training and should have experience with high voltage and current devices Accuenergy shall not be responsible or liable for any damages cause by improper meter installation and or operation senes 002 9qnov SEES 00Z IANIY pi R ESS ba d ki 1 1 200 OVETVIEW EET 2 1 2 Application EE 3 DR arbem ge T 4 Chapter 2 Installation oie s s reo Segen dd d Siento a Cod i hee 5 Appearance and DIMENSIONS irre FERRE ERE Rasad ERAN o Resa ke 6 2 2 Installation MEO 8 2 3 AcuDC 200 Wiring Diagram ene ere Fea e ea dale 14 2 3 1 Auxiliary Power Requirement ue eee 44745 aa Ta pe sa 15 2 3 2 Voltage and Current Ts oec re se o 17 2 3 3 I O Setting 2534 GOMMUNICALION ee E dE Eegen Fri 28 Chapter 3 Basic Operation and Setup 3 1 Display Panel and KEE 8 2 ReaFTime Metering Mode 2 eor Let eor as Taaza rad EATEN aE 3 3 Parameter Setting ModE x RE EP ND ke BERE POR RA 4 47 4 1 Modbus eee 48 4 2 Communication FORMAL icici ssidetesovasdcoaanatincsevevacsiond
18. e relay status has been altered Table 4 11 Control Relay Response Message Addr Fun Do addr HI Do addr Value HI Value CRC16 HI CRC16LO 01H 05H 00H 00H FFH 00H 8CH 3AH 5 Preset Reset Multi Register Function Code 16 Query Function 16 allows the user to modify the contents of a multi register Any register that exists within the meter can have its contents changed by this message The example below is a request to meter number 1 to preset alarming value 1000 alarming delay 4s and alarming output to RO1 Table 4 12 Preset Reset Multi Register Message Data start Data start Data ff of Data of Addr Fun reg HI reg LO reg HI reg LO Byte Count 01H 10H 01H OBH 00H 03H 06H Value1 Value1 Value2 Value2 Value3 Value3 CRC CRC HI LO HI LO HI LO HI LO 07H DOH 00H 05H 00H 01H 82H 3DH Response The normal response to a preset multi register request includes the slave address function code data start register the number of registers and error checking 59 senes 00Z 9qnov senes 00Z 9qnov Table 4 13 Preset Multi Registers Response Message Addr Data start Datastart Data of Data of CRC16 ri reg HI reg LO HI LO HI 01H 10H 01H OB H 4 3 AcuDC 200 Address Table Metering data is stored in these register areas Use Modbus function code 03 to read metering data Table 4
19. function allows the master to obtain the measurement results from the meter Table 4 8 is an example to read the measured data from slave device number 1 the data address for voltage V is 0200H Table 4 8 Read V Query Message Addr Fun Data start Data start Data t of Data if of CRC16 CRC16 addr HI Addr LO regs HI regs LO HI LO 01H 03H 02H 00H 00H 01H 85H B2H Response The meter response includes the meter address function code quantity of data byte data and error checking An example response to read V 0001H 0 01V is shown in Table 4 9 Table 4 9 Read V Message Byte Data Data CRC16 CRC16 Addr RM unt Hi LO HI LO 01H 03H 02H 00H 01H 79H 84H senes 002 9qnov senes 00Z 92qnov 4 Control Relay Function Code 05 Query This message forces a relay to either turn ON or OFF Any relay that exists within the meter can be forced to either ON or OFF status Relay addresses start at 0000H Relay1 0000H Relay2 0001H The data value FFOOH will set the relay on and the value 0000H will turn it off all other values are illegal and will not affect that relay The example below is a request to the meter number 1 to turn on Relay Table 4 10 Control Relay Query Message Addr Fun DO addr HI DO addr LO Value HI Value LO CRC16 HI CRC16LO Response The normal response to the command request is to retransmit the message as received after th
20. g AcuDC 200 Series meter can be used for alarming Over under limit alarm will be triggered when the metering parameter value falls outside of the preset value limit and does not resume back to normal within the preset time delay interval When an alarm condition is met the alarm channel relay will be activated switch close and the LCD display backlight will flash Alarm setting steps are as follows senes 002 9qnov senes 00Z JANY 1 Set RO output mode to alarming 2 2 Select alarming object For example voltage for AcuDC 221 1 current for AcuDC 222 2 3 Set alarming delay time 0 255s 4 Set alarming 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 width of RO1 30 5000ms 0107H RO2 output mode 0 level 1 pulse 2 alarming 0108H Pulse width of RO2 30 5000ms 010BH Alarming object 0 no 1 voltage 2 current 3 power 010CH Sign of inequality Dre 1 5 current 0 9999 0 Alarming value voltage 0 600 0 power 0 6000 0 010DH Alarming delay time 0 255 s 010EH RO alarm channel 0 RO1 1 RO2 2 RO1 RO2 Here is an example to show how this works If we want to trigger an alarm at RO1 when the current is over 10 005A with a time delay of 15 seconds we should set the alarm parameters as follows 1 Set RO1
21. h each other They can only response to the query of master device 1 Transmission mode The mode of transmission defines the data structure within a frame and the rules used to transmit data The mode is defined in the following which is compatible with Modbus RTU Mode O Coding System 8bit Parity None Start bit 1bit 6 Stop bit 1bit 8 Data bits 8bit G Error checking CRC 2 Protocol Framing Table 4 1 Data Framing Address Function Data Check 8 Bits 8 Bits N x 8 Bits 16 Bits Address Field The address field of a message frame contains eight bits Valid slave device addresses are in the range of 1 247 decimal A master addresses a slave by placing the slave address in the address field of the message When the slave sends its response it places its own address in this address field of the response to let the master know which slave is responding Function Field The function code field of a message frame contains eight bits Valid codes are in the range of 1 255 decimal When a message is sent from a master to a slave device the function code field tells the slave what kind of action to perform 49 senes 002 9qnov senes 00Z 92qnov Table 4 2 Function Code Code Meaning Action 01 Read Relay Output Obtain current status of Relay Output 02 ReadDigital Input Obtain current status of Digital Input 03 Read Registers Obtain current binary value f
22. ial silver alloy Mechanical Endurance 5x10 cycles Output Form latching or pulse 30 to 5000ms or alarming Range 4 20mA or 0 5V Resolution 12bit Load Capability 4 20 mA 0 5 V Max Resistance 5000 Max Current 20mA 67 senes 002 Janay senes 00Z IANIY 4 Input Current 0 10A Direct Input 0 9999A Extra current shunt or HCT with programmable range Shunt 50 100mV Programmable Hall Current Thruster HCT 0 5V 0 4V 0 20mA 4 20mA Power Consumption Accuracy Input Voltage Input Impedence 2W Max 0 600V Load Isolate Voltage 2500Vac rms Input Type Wet contact Contact with power supply Input Resistance 2K ohm typical Input Voltage Range 16 30Vdc Max Input Current 20mA 5 Environment Humidity 0 95 Non condensing Temperature 25 C 70 C Size 165mmx70mmx115mm Package VVeight 0 4Kg 6 Povver Supply nput Option 1 100 240Vac 50 60Hz 100 300Vdc Option 2 20 60 Vdc Povver Consumption 2W senes 002 9qnov 5 002 2qnov S L 70 Appendix B Ordering information Voltage Current Aux PowerSupply DI Opution RO Opution AO Opution AcuDC 200 zi HE Jh Ej i m 040 No Analog Output A01 4 20mA L A02 0 5V ORO No Relay Outpu
23. meter is either voltage or current depends on model 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 established DI1 to DI4 are in the OFF state Fig 3 2 Voltage Display Second screen Current display page Current display As in fig 3 3 1 9 487A DI2 and DIA are ON whereas others are OFF Note Communication icon blinks when the Fig 3 3 Current Display meter is communicating with the master device The blinking speed is relative to the data transfer rate The faster the icon blinks the higher the transfer rate is Press P Power display page The picture shows that P 350 6KW 011 013 are close DI2 D 4 are open Communication established 2 Press E Energy display page The picture shows E 32768 9Kwh all Dis are open Communication established Note When the energy is greater than Fig 3 5 Energy display 99999 9Kwh it will reset to 0 automatically 3 3 Parameter Setting Mode In metering mode Press I and V A to go to the parameter setting mode senes 002 9qnov S H S 00Z 9qnov Press lt I gt to move cursor from left to right The digit will be flashing when the cursor moves to it Press E to increase 1 once a time Press P to decrease 1 once a time Press V A to store the current setting and go to next screen In any screen press lt gt and
24. nal 15Vdc power supply which the customer must provide 71 senes 002 9qnov Appendix C Revision Information senes 00Z 2qnov Revision Date Description 1 0 20080215 First version 1 02 20090305 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 wiring diagram Update the method for generating CRC value Remove hall effect sensor ordering information and specifications ALLUZIVZRGY Accuenergy Corporation Los Angeles Toronto Beijing North America Toll Free 1 877 721 8908 Web www accuenergy com Email marketing accuenergy com
25. nergy 3 4 Digital Input Indicator 5 Parameter Icon 6 Time for Backlight Upper Lower limit value settings for AO to No 4 switches indicate status for to DI4 respectively SET icon and one of the following icons will be on at the same time in the setting mode addr stands for device communication address setup bps stands for communication rate setup A stands for shunt current V stands for shunt voltage When setting up AO tracking object A stands for tracking current and V stands for tracking voltage When Q icon is on it indicates the time set for backlight 7 Communication Icon When g l blinks it indicates that communication is established betvveen the meter and the master device Users can read real time metering data set parameters and navigate the meter using the four control keys lt I gt E P and V A from left to right respectively The four keys are located underneath the key cover on the meter front Note This manual is vvritten based on the AcuDC 223 vvith full options model Some real time metering display and parameter settings may not be available on certain models senes 002 9qnov senes 00Z IANIY 3 2 Real Time Metering Mode Depending on model the AcuDC 200 Series meter can display real time metering data such as voltage current power and energy When the meter is powered up the default display para
26. ounting onto a panel 3 LCD Display Large bright blue backlight LCD display Four keys are used to select display and to set parameters 4 Key of the meter 5 Key Cover Close the cover to avoid wrong key operation 6 Installation Clip Use for locating the meter to the panel 7 Input Terminals Auxiliary power voltage and current input 8 Extend Wiring Terminals Communication DIRO AO senes 002 9qnov SEES 00Z 9qnov Dimension mm inch 48 00 1 89 60 00 2 36 96 00 3 78 71 00 2 80 m gt Figure 2 2 Dimension of AcuDC 200 2 2 Installation Method Environment Before installation please make sure that the environment meets the following conditions 1 Temperature AcuDC 200 meter s working temperature range is from 25 C to 70 C Operating the meter beyond this range may result in 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 AcuDC 200 meter should be installed in a dry and dust free environment Avoid exposing meter to excessive heat radiation and high electrical noise source senes 002 9qnov SEES 00Z IANIY Installation Steps AcuDC 200 Series meter is typically installed on the panel of switch gear 1
27. output mode to 2 This means RO1 works under alarming mode 2 Set alarming object to 2 current The alarming limit value should be set as 10 005 3 Set alarming delay time as 15 seconds 4 Set sign of inequality to 1 5 Set RO alarm output channel as 0 After setting up the alarm parameters when the alarm condition is met current goes above 10 005A for 15 seconds RO1 will be activated contact closed and the 45 senes 002 9qnov senes 00Z 9qnov LCD display backlight will flash Note If RO alarm output channel 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 mode If none of the relay output is set to alarming mode no relay will be triggered Chapter 4 Communication and Setup 4 1 Modbus Protocol Introduction 4 2 Communication Format 4 3 AcuDC 200 Address Table 47 S H S 00Z 2qnov 4 1 Modbus Protocol Introduction The Modbus RTU protocol is used for communication in the AcuDC 200 series meter Data format and error check methods are defined in Modbus protocol The half duplex query and respond mode is adopted in Modbus protocol There is only one master device in the communication net The others are slave devices waiting for the query of the master Only the master device can communicate with slave devices The slave devices cannot communicate wit
28. r Range Object Type Type of Access 0109H Transform object 0 2 Word R W Note 1 Object type Bit binary bit Word unsigned integer of 16 bit Integer 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 function code 01 02 and 03 respectively R W Read and Write data can be read from and written into memory using function code 16 Control command can be written using function code 05 Writing to Read only field is forbidden Appendix Appendix A Technical Data and Specifications Appendix B Ordering Information Appendix C Hall Effect Sensor Specifications Appendix D Revision Information 65 senes 00Z IANIY Appendix A Technical Data and Specifications 1 Measurement Voltage 0 296 0 01V 0 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 Type RS485 Half Duplex Optical isolated Baud Rate 1200 19200bps Protocol Modbus RTU Isolate Voltage 2500Vac Read and Write setting parameters Function Read measuring data Execute operation instruction 3 Output Output Form Mechanical Contact Form A Max Load Voltage 250Vac 30Vdc Max Load Current 3A Contact Resistance 100mO Max Isolate Voltage 4000Vac Contact Mater
29. rom one or more registers 05 Control Relay Output Force relay state to ON or OFF 16 Preset Multiple Registers P E values into a series of consecutive Data Field The data field is constructed using sets of two hexadecimal digits in the range of 00 to FF hexadecimal The data field of messages sent from a master to slave devices contains additional information which the slave must use to take the action defined by the function code This can include items like discrete and register addresses the quantity of items to be handled and the count of actual data bytes in the field Check Field Check field is used in the master and slave device to find errors in the data transmitting Inaccuracy may occur within a data group due to noise or other interference when being transitted from one device to another The check field guarantees the device does not respond to error messages in order to improve system reliability and efficiency CRC16 error check method is adopted in Modbus Protocol 3 Error Check Method Every message includes an error checking field which is based on the Cyclical Redundancy Check CRC method The CRC field checks the contents of the entire message It is applied regardless of any parity check method used for the individual characters of the message The CRC field is two bytes long containing a 16 bit binary value The CRC value is calculated by the transmitting device and is appended to the message
30. s for the auxiliary power are 1 2 and 3 L N G A switch or circuit breaker shall be included in the building installation in close proximity to the equipment and within easy reach of the operator It shall be marked as the disconnecting device for the equipment Note Make sure the voltage of power supply is the same as what the meter needed for its auxiliary power A Note Make sure the auxiliary power terminal G is connected to the earth ground terminal of the switch gear 1A FUSE o Power Supply Fig 2 8 power supply 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 An isolated transformer or EMI filter should be used in the auxiliary power supply loop if there is power quality problem in the power supply 1A FUSE C o OL e L Power Supply o _ N Z N 2 N AcuDC 200 Gc 5 c Oo Groud Fig 2 9 power supply under EMI filter Choice of power supply wire could be AWG22 16 or 0 6 1 3mm 2 3 2 Voltage and Current Input Voltage is directly input into the meter or via hall effect sensor The wiring diagram is as follows senes 002 9qnov senes 00Z IANIY Vdc vdc Vdc Vdc Voltage Hall Effect Sensor v AcuDC 240 HO External DC Load Power Voltage Direct Wiring
31. ssaseneceadosseocsceddancaesbecds 52 43 AcuDC 200 Address Table ryan 60 CET Tt EE 65 Appendix A Technical Data and Specification Appendix B Ordering Information Appendix C Hall Effect Sensor Specifications esses e Appendix D Revision Information senes 002 9qnov senes 00Z 92qnov Congratulations You have purchased an advanced versatile multifunction power meter This meter can work as a remote terminal unit RTU that contributes to your system 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 200 series meter 1 2 Removable 14 pin terminal 1 3 Installation clips 2 4 User s manual 1 5 Maintenance guarantee card 1 Please read this manual carefully before operating or installing the AcuDC 200 meter to avoid unnecessary trouble You can read part of this manual depends on how you use the AcuDC 200 meter Chapter 1 Basic function specification and application area of AcuDC 200 meter Chapter 2 Chapter 3 Chapter 4 Appendix Installation and wiring details of AcuDC 200 meter Real time metering data display and parameter setting method of AcuDC 200 meter Communication protocol format and address table of AcuDC 200 Technical data and specifications of AcuDC 200 and ordering information VII senes 002 9qnov AcuDC 200 Series VIII Chapter 1
32. t L 2R0 2 Relay Output AcuDC 221 222 223 Only ODI No Digital Input L 4DI 4 Digital Input AcuDC 221 222 223 Only P1 100 240 4450 60 24100 300Vdc L P2 20 60Vdc AO Dierct Current Input 0 10Amp Current Shunt Input Option 50 100mV A2 Hall Element Input Option 4 20mA Hall Element Input Option 0 5V 300V Nominal Input Volage 300 Vdc 600V Nominal Input Volage 600 Vdc 48V Nominal Input Volage 48 Vdc ia Hall Element Sensor 0 5V ratio settable Voltage Hall Element Sensor can be ordered L__ sv AcuDC 211 Voltage Meter No communication AcuDC 212 Current Merer No communication 213 Multifuncion No communication AcuDC 221 Voltage Meter communication AcuDC 222 Current Meter communication AcuDC 223 Multifuncion communication AcuDC Series Meter Ordering Example AcuDC 223 300V A2 P1 4DI 2RO AO1 Voltage Hall Effect Sensor Ordering Information Current Hall Effect Sensor Ordering Information Special order Special order Please contact your local Accuenergy Please contact your local Accuenergy Representative for further details Representative for further details Note 1 When the input voltage is above 600V or the system design requires 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 exter
33. t Output HN ME po Eo AcuDC 200 6 0 H 200 Output A ad mo l A Output CL na 8 I Lo 2 Z Load Current Hall External Load sir Ur Effect Sensor J LH External DC Power Fig 2 16 Voltage and Current input with Hall Effect Sensor Fig 2 17 Voltage and Current input with Hall Effect Sensors 21 senes 002 9qnov senes 00Z 9qnov Current direct input wiring is used for current smaller than 10A the current signal wire choose AWG 15 16 or 1 52 5 mm or greater corss section Current wiring using shunt method is used for current larger than 10A the current signal wire choose AWG 15 16 or 1 5 2 5mm 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 of the AcuDC 220 Series Input terminals are DI1 9 DI2 10 DI3 11 DI4 12 DIC 13 The circuit drawing of the digital input is simplified as fig 2 17 16 30Vde 5 LB o Photo Coupler lt Y COM EZ OUT AcuDC 200 V Fig 2 18 Simplified DI input circuit The external power supply voltage range for DI is from 16Vdc to 30Vdc In order to compensate for interference voltage of the external power supply may be higher when the DI s load is located at a distance however the maximum currert for the circuit must not be over 20mA Wires with cross section of 0 6 1 5mm AWG 16 22 should be used for DI Relay
34. the status of Relay1 and Relay2 bits is shown as Table 4 5 The status of Relay1 and Relay2 is responding to the last 2 bits of the data Relay1 bitO Relay2 bit1 Table 4 5 Relay status responds Addr Fun Bytecount Data CRC16 HI CRC16 LO 11H 01H 01H 02H D4H 89H The 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 0000H DI2 0001H DI3 0002H and DI4 0003H The following query is to read the 4 DI status of the meter with communication address 17 senes 002 9qnov senes 00Z IANIY Table 4 6 Read the status of DI1 DI4 Query Message Add F DI start DI start DI num pw CRC16 a TP Tun 1 addr HI LO HI HI 11H 02H 00H Response The AcuDC 200 response includes the AcuDC 200 address function code quantity of data characters the data characters and error checking An example response to read the status of 4 Dis is shown in Table 4 7 The DI status corresponds to the last 4 bits of the data DI1 bitO DI2 bit1 DI3 bit2 DI4 bit3 Table 4 7 Read Status of DI Addr Fun Byte count Data0 CRC16 HI CRC16 LO 11H 02H 01H 03H E5H 49H Data 2 6 5 4 3 2 1 0 0 0 0 0 0 0 1 1 MSB LSB 3 Read Data Function Code 03 Query This
35. to track voltage upper limit is 600V lower limit is 0 when the measuring value is 300V the AO output should be out M L U L 5V 300 0 600 0 5V 2 5V 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 1 16mA 9 333mA Note 1 Upper limit must be greater than lower limit 2 If measuring value is less than the lower limit the output will be 0V 4mA If the measuring value is greater than the upper limit the output will be 5 V 20mA senes 002 9qnov senes 00Z IANIY Load AcuDC200 R2 Voltage Output Fig 2 20 Analog Output Output Capability Load Current Output 4 20mA Max Load Resistance 500 Ohm 0 5 V Max 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 Ais differential signal B is differential signal and S is connected to shield of twisted pair cable Up to 32 devices can be connected on a RS485 bus Use good quality shielded twisted pair cable AWG22 0 5mm or larger The overall length of the RS485 cable connecting all devices cannot exceed 1200m 4000ft AcuDC 200 is used as a slave device of master like PC PLC data collector or RTU If the master does not have an RS4
36. tput requirement before ordering Analog output can track voltage current and power The output range is fixed 4 20mA 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 models In addition to front panel key pressing AcuDC 220 Series setting can be modified using R 485 communication 1 Select track object voltage current or power 2 Set tracking for the upper and lower limit Maximum upper limit values for voltage current and power are 600V 9999A 6000kW respectively The upper limit must be less than the maximum upper limit value and greater than the lower limit 25 senes 002 9qnov senes 00Z 9qnov value The lower limit must be equal to or greater than 0 Appropriate upper and lower limit settings help to increase tracking accuracy and efficiency 3 The relationship among AO 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 used to demostrate the above two relationships AO tracking object and its setting is as follows Table 2 3 Tracking object and its Setting number Setting number Tracking object 0 Voltage 1 Current 2 Power 1 Example 1 Voltage output option for AO Set AO
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