User's Manual
Contents
1. 0200H 0201H Voltage Float R 0202H 0203H Current Float R 0204H 0205H Power Float R 0206H 0207H AO1 Float R 0208H 0209H AO2 Float R 020AH 020BH DI1 count velue UINT32 R 020CH 020DH 012 count velue UINT32 R Table 5 14 Real time measurement address table Note The high byte is followed by the low byte Running time The data space below is for running time Function code 03 Read 0280H 0282H 0283H Load running time 0 999999999 long Energy The data space below is for energy Function code 03 Read 16 Write vat Positive energy 0 999999999 long R W ai Negative energy 0 999999999 long R W Total energy 0 999999999 long R W Paa Net energy 0 999999999 long R W AcuDC 240 Serier ADC 240 Series aa Import Ah 0 99999999 long R W dll Export Ah 0 99999999 long R W eee Total Ah 0 99999999 long R W aad Net Ah 0 99999999 long R W Table 5 15 Energy and Ah address table The relationship between the register value and the real value Rx is the register value Voltage Real Rx Vv Current Real Rx A Power Real Rx Kw Energy Real Rx 100 Kwh Ah Real Rx 100 Ah AO Real Rx V or mA depends on the AO Type Running time Real Rx 100 Hour Table 5 16 The relationship between register value and real value Real time clock area Only the AcuDC 243 meter2. Voltage 0 2 0 001V 0 9999V Current 0 2 0 005A 0 50000A Power 0 5 0 001kW 0 60000kW Energy 0 5 0 01kWh 0 9999999 99kWh Drift with Temperature lt 100ppm C Stability 0 5 0 year 2 Input Input Range Direct Input 0 1000V Via Hall Effect Sensor 0 9999V Impedance 2MQ Load lt 0 6W Accuracy 0 2 Input Range 0 20A direct input start up current 0 02A 0 50000A via Shunt or Hall Effect Sensor range is programmable Shunt 50 100mV programmable Hall Effect Sensor 0 5V 0 4V or 4 20mA 12mA 8mA Consumption 2W Max Accuracy 0 2 Input Type Dry Contact Isolation Voltage 2500 Vac 74 3 Output Type Mechanical Form A Max Load Volage 250Vac 30Vdc Max Load Current 3A ON resistance 100m0O Max Isolation Voltage 4000Vac Mechanical Life 5 10 Range 4 20mA 0 20mA 0 5V 1 5V Accuracy 0 5 Load Capacity mA type max load resistance 7500 V type max load current 20mA Type RS485 Half Duplex Optical Isolated Protocol Modbus RTU Baud Rate 1200 38400 bps Isolation Voltage 2500Vac AaDC 240 Serier ADC 240 Series Input P1 100 240Vac 50 60Hz 100 300Vdc P2 20 60Vdc Consumption 3W typical Operating Temperature 25 C 70 C Storage Temperature 40 C 85 C Humidity 5 95 non condensing Appendix B Ordering Informat
3. 0 5 68 68 05 Figure 2 3 Panel CutOut 2 Remove the clips from the meter and insert the meter into the square hole from the front side LLL de Figure 2 4 Put the meter into the opening 3 Install clips on the back side of the meter and secure tightly to ensure the meter is af fixed to the panel See Figure 2 5 Figure 2 5 Install the clips Terminal Strips There are 3 groups of current terminal strips There will be another terminal strip if the me ter is connected with the 1 0 module Voltage Current terminal strip Power Supply terminal strip Power Supply 20302 6 5 4 3 2 1 l I NC U NC U N AcuDC 240 Series AaDC 240 Series 1 0 terminal strip 2DI 2A0 1 0 terminal strip 2DI 2RO 2DO 2202222 20 20020000 21 22 DI11 DI12 0121 D122 AO1 A01 AO2 A02 0111 0112 D121 0122 011 012 021 022 10 terminal strip 2DI 15V Communicaton terminal strip Oooo 1 oO ow Comm Port 2 74 15 16 fn DD J MAD 8 19 20 21 22 24 Safety Earth Connection DANGER Only qualified professionals should install make sure the power supply is cut off and all wires are de energized Fail
4. 4 Installation Clips x4 already assembled on the meter will be affixed to the meter 5 Product Disk containing User s Manual and Warranty Card x1 User s manual contents Chapter 1 Introduces the basic AcuDC 240 features and applications Chapter 2 Provides details on how to install AcuDC 240 and how to wire terminals and cables Chapter 3 Walks you through how to program AcuDC 240 via the front panel display me tering data and how to set parameters Chapter 4 Introduces AcuDC 240 features in detail Chapter 5 Detailed information related to communcation including communcation proto col formats and parameter address mapping Appendix Provides all AcuDC 240 technical data and specifications ordering information etc AcuDC 240 Series gt e y O Chapter 1 Introduction 1 1 Meter Overview 1 2 Area of Application 1 3 AcuDC 240 Series ADC 240 Series Powerful Yet Cost Effective AcuDC 240 series monitors DC voltage current power and energy It supports bi direc tional current measurement and also displays meter running hour and load running hour Analog Output applies to DCS systems industrial monitoring and control AcuDC 240 has a combination of accurate measurement intelligent multifunction and simple human ma chine interface The cost effective meter fulfills the requirments of monitoring and control ing the DC circuit Compact and Easy to Install AcuDC 240 series dimensi
5. 49 99A P 11KW Communication status is active Figure 3 4 Multifunction Display Note Communication status is displayed on every screen 1 screen Positive Energy E_pos 68 32kWh Press V A to scroll to the 2 screen Figure 3 5 Positive Energy Display 2 screen Negative Energy E_neg 25 58kWh Press V A to scroll to the 3 screen Figure 3 6 Negative Energy Display 3 screen Total Energy E_total 93 90kWh Press V A to scroll to the 4 screen Figure 3 7 Total Energy Display 4 screen Net Energy E_net 47 74kWh Press V A to scroll to return to the 1 screen Figure 3 8 Net Energy Display 27 AaDC 240 Series 3 WY S R 3 Press F scroll to Ah Display when on the Energy display Figure3 9 Positive Ah Display Figure3 10Negative Ah Display Figure 3 11 Total Ah Display 28 Figure 3 12 Net Ah Display 1 screen Positive Ah Ah pos 75 23Ah Press V A to scoll to the 2nd screen 2 screen Negative Ah Ah neg 18 01Ah Press V A to scoll to the 3rd screen 3 screen Total Ah Ah_total 92 24Ah Press V A to scoll to the 4th screen 4 screen Net Ah Ah_net 57 22Ah Press V A to scroll to return to the 1st screen If the meter have storage capabilities Press the F key can scroll to the date time display screen 1 screen As shown in figure display 2014 04 09 Press V A to scoll to the 2nd screen AcaDC 240 Series
6. Minute Low byte Second 0460H Voltage MIN Float 0461H 0462H Time of occurrence Year High byte years Low byte month 0463H Month Day Hour Minute High byte day Low byte hour Word AcuDC 240 Serier 3 0465H Current MIN Float R SS 0466H N 0467H Time of occurrence Year High byte years Low byte month 0468H Month Day Hour Minute High byte day Low byte hour Word R 3 0469H Second High byte Minute Low byte Second 046AH Power MIN Float R 046BH 046611 Time of occurrence Year High byte years Low byte month 046DH Month Day Hour Minute High byte day Low byte hour Word R 046EH Second High byte Minute Low byte Second Table 5 19 MIN records address table Data Logging Setting Only the AcuDC 243 meter which has the storage functionhas this function Use Function code 03 to read Function code 16 to preset 0 Disable 1 Enable 0 mode 1 continuous mode start Enable data logging Word R W 1 after set parameters Mode of data logging 1 mode 2 Timing start and stop Word R W 1 2 mode 3 Specifies the start time hour Minute interval time 1 1440 Minute Word R W 1 Low Byte Month 1 12 Start time High Byte Year 00 99 0503H Word R W 1 year month Low Byte Month 1 12 High Byte day 1 31 0504H Start time day hour Word R W 1 Low Byte hour 0 23
7. 240 optional I O module is equipped with two dry contact digital inputs The termi nals are DI11 17 DI12 18 DI21 19 DI22 20 The circuit is simplified as o AcuDC 240 N Din1 o Optical Coupler K OUT 24 Ho Din2 V 246 US Power Supply D Figure 2 13 Digital Input When the Switch is open there is no current flow in the diode side of the optical coupler the triode is off OUT is in low state When the Switch is closed there is current flow in the diode side the triode is on OUT is in high state In this way the high and low state of OUT correspondes to closed and open state of the switch 1 0 module has built in power supply digital input does not require external power supply DI wire size is AWG22 16 or 0 5 1 5mm Analog Output AcuDC 240 1 0 module offers two Analog Outputs The output type is 0 20mA 4 20mA max 24mA 0 5V 1 5V max 6V as Figure 2 14 shows Each module can only have one type of output please specify when ordering 16 Load AcuDC 240 AcuDC 240 Voltage Output Current Output Figure 2 14 Analog Output Analog Output can be used for scaling current voltage power The output type is fixed 0 20mA 4 20mA or 0 5V 1 5V the output range can be configured AcuDC 240 series can be configured via pressing the buttons on the meter The meter with communication option can be configured via our software 1 Select AO parameter 2 Set AO upper and lower lim
8. B Mode2 if correctly set historical log as set date and time can record within begin to end time Record will stop after buffer is full C Mode3 if correctly set historical log as set hour and minute only can record while the running time 15 equal to setting hour and minute depending on firs in firs out recycling log 3 Set the logging interval in minutes Interval can be set from 0 1440 minutes according to different application 4 Start time and enf time Only used on mode 2 Set the start time and end time of data logging 5 Start time Only used on mode 3 Set the start time of data logging 6 Select the parameters Select the parameters which need to log from the 13 parameters You can select one parameter also can select all 13 parameters 2 Read the data logging There are two ways of retrieving the logs read one window and read all In the read one window you can according to need to set up the initial log number of read and each window contains the number of logs You must set the Initial log number 46 berfor the oldest log number and the newest log number The window record num is the maximum number of record entries the software can read at a time it is calculated by 240 Record Size You can read less than or equal to the maximum number of logs If you read the the number of logs equal to the number of the window the initial log number will automatically increase the number of a window
9. Code 02 This function allows the user to obtain DI status ON OFF 1 ON 0 OFF On top of slave device address and function code query frame must contain the digital input register starting address and the number of registers to be read AcuDC 240 DI address starts from Addr Fun Byte count Data CRC16 hi CRC16 lo 11H 01H 01H 02H D4H 89H Data Bytes 7 6 5 4 3 2 0 0 0 0 0 0 0 0 Relay 1 OFF Relay 2 ON Table 5 5 Response frame of reading Relay Output status 0000H DI1 0000H DI2 0001H Table 5 6 depicts of reading DI1 to DI2 status of the slave device with the address of 17 Addr Fun Distart Distart bjnumhi Dinumlo CRCI6hi 610 addr hi addr lo 11H 02H 00H 00H 00H 02H FBH 5BH Table 5 6 Query frame of reading DI status Response The slave device anwsers the master device s query The response frame contains slave de vice address function code data quantity and CRC check Each DI utilizes one bit 1 ON 0 OFF Table 5 7 depicts the response frame AcuDC 240 Series 3 Addr Fun Byte count Data0 CRC16 hi CRC16 lo DI 11H 02H 01H 01H 64H 88H XxX N Data A 3 7 6 5 4 3 2 1 0 0 0 0 0 0 0 0 1 MSB LSB Table 5 7 Response frame of reading DI status 3 Read Data Function Code 03 Query This function allows the master to obtain the measurement res
10. Figure 3 13 Date display 2 screen Time Display screen As shown in figure display 14 19 52 Press V A to scroll to return to the 1st screen Figure 3 14 Time display If you choose to have DI counting function press the F key can switch to the DI count display screen 1 screen 011 Count display screen As shown in figure shows that DI1 count 716832 Press V A to scoll to the 2nd screen Figure 3 15 DI1 Count display AaDC 240 Series 2nd screen DI2 Count display screen As shown in figure shows that DI1 count 648362 Press V A to scoll to the 1st screen Figure 3 16 DI2 Count display Pressing F and V A simultaneously will activate the parameter setting mode In parameter setting mode F key is used to increase value by one for the flashing digit V A key is used to confirm the flashing digit and move the cursor At the last digit of the parameter pressing V A key will confirm and go to the next screen On any screen press ing F and V A simultaneously will exit system parameter settings mode and return to the metering data mode When entering the parameter settings mode via pressing F and V A the first screen is device address screen As the left figure shows the current device address is 1 After 1 second the screen will scroll to the password screen Figure 3 17 Device address screen display Parameter settings mode is password pr
11. Word R W 9 8100 DIT Working mode Bit1 DI2 Working mode Enable as bit Clear DI 0 not clear 1 clear count value BitO clear DIT Word Ww Bit1 clear DI2 Clear Ah Ox0A Effective Word Ww Clear MAXMIN 0 0 Effective Word Ww value Clear data logging OxAA Effective Word Ww Table 5 23 System Parameter Settings DI Status Use Function Code 02 to read DI status 0000H 011 1 ON O OFF Bit R 0001H 012 1 ON 0 0FF Bit R Table 5 24 DI Address Relay Status Use Function Code 01 to read Relay Status Function Code 05 to control 0000H DO1 1 ON O OFF Bit R W 0001H DO2 1 ON O OFF Bit R W Table 5 25 Relay Status Note 1 Data Type Bit is 1 bit binary Word is 16 bit unsigned integer Integer is 16 bit signed interger Float is 32 bit floating point 2 Read Write R is read only reading DI is Function Code 02H reading DO is Function Code 01H reading the other parameters is 03H R W is read write write control relay by Function Code 05H Use Function Code 10H to write system parameters Writing into non writable addresses is forbidden AcuDC 240 Series e oO Appendix Appendix A Technical Data and Specification Appendix B Ordering Information Appendix C Version Information Appendix A Technical Data and Specification 1 Measurement ADC 240 Series
12. lo Value hi Value lo CRC16 hi CRC16 lo 01H 05H 00H 00H FFH 00H 8CH 3AH Table 5 11 Control relay status response frame AcuDC 240 Series ADC 240 Series 5 Preset Multiple Registers Function Code 16 Query Function Code 16 10H Hex allows the user to modify the contents of multiple registers AcuDC 240 system parameters can be written by this function code The following example depicts how to preset slave device 1 s AO1 parameter current lower limit sign lower limit value 0 upper limit sign upper limit value 100 Data start Data start reg Data of Data of Byte Valuel Value1 Addr Fun A reg hi lo reg hi reg lo count hi lo 01H 10H 01H 09H 00H 05H OAH 00H 01H Value2 Value2 Value3 Value3 Value4 Value4 Value5 Value5 CRC16 CRC16 hi lo hi lo hi lo hi lo hi lo 00H 00H 00H 00H 00H 00H 00H 64H C5H 8AH Table 5 12 Preset multiple registers query frame Response The correct response is to send back address function code data starting address data number CRC check after the value is changed Addr Fun Data start Data start reg Data Hof reg Datattof CRCI6 hi CRC16 reg hi lo hi reg lo lo 01H 10H 01H 09H 00H 05H DIH F4H Table 5 13 Preset multiple registers response Basic Measurement Parameter Address Use Function Code 03 to read
13. which has the storage functionhas this functionha Year Use Function code 03 to read Function code 16 to preset 2000 2099 0285H Month 1 12 Word R W 0286H Day 1 31 Word R W 0287H Hour 0 23 Word R W 0288H Minute 0 59 Word R W 0289H Second 0 59 Word R W Table 5 17 Real time clock address table MAX records Only the AcuDC 243 meter which has the storage functionhas this function Function code 03H for reading 040EH Second High byte Minute Low byte Second 0400H Voltage MAX Float 0401H 0402H Time of occurrence Year High byte years Low byte month 0403H Month Day Hour Minute High byte day Low byte hour Word 0404H Second High byte Minute Low byte Second 0405H Current MAX Float 0406H 0407H Time of occurrence Year High byte years Low byte month 0408H Month Day Hour Minute High byte day Low byte hour Word 0409H 5600 6 High byte Minute Low byte Second 040AH Power MAX Float 040BH 040CH Time of occurrence Year High byte years Low byte month 040DH Month Day Hour Minute High byte day Low byte hour Word Table 5 18 MAX records address table MIN records Only the AcuDC 243 meter which has the storage function has this function Function code 03H for reading 0464H Second High byte
14. will be closed Alarming setup steps Select the designated relay output RO1 RO2 and set the relay type to alarm mode set as 2 1 Set the alarming parameter 2 Set the alarming inequality 0 smaller than 1 larger than 3 Set the threshold value 4 Set the delay time the minimum unit is second the range is 0 255s Example Alarm condition is set for current larger than 10A In a delay time of 15s send alarm signal via RO1 Steps 1 Set RO1 as alarm mode set RO1 mode as 2 2 Select alarm parameter as current set alarm parameter code as 2 3 Set alarm inequality as larger than set the inequality sign as 1 4 Set the alarm threshold value as 10 AcuDC 240 Series 5 Set the delay time as 15 seconds Setting is completed When the current is larger than 10A and lasts more than 15 seconds RO1 will send out alarm signal ADC 240 Series Positive and negative output power AcuDC 240 series meter can choose to contain positive and negative output power of IO module standard 15V power output power 2W Positive and negative power supply power supply is mainly used to give hall sensor wiring method as shown in figure 2 16 V GND 3 GND V 22 AcuDC 240 Hall sensor Figure 2 16 3 1 Display Panel and Keys 3 2 Metering Data 3 3 System Parameter Settings 3 4 1 0 Parameter Settings 3 5 Meter Information Display Operational details of the mete
15. 2 1 Frame When data frame reaches the terminal unit the unit removes the data frame s header reads the data if there is no error then it implements the data s task Afterwards the unit puts its own data with the acquired header and sends back the frame to the sender The response data frame contains Address Function Data and CRC Check Any error will cause a failure to respond Address Function Data Check 8 Bits 8 Bits N x 8 Bits 16 Bits Table 5 1 Data Frame Format 2 2 Address Field The address field is at the start of the frame It is composed of 1 byte 8 bits its decimal value range is 0 255 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 re sponse to let the master know which slave is responding 2 3 Function Field 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 AcuDC 240 Series AuwDC 240 Serier 01 Read RO status Obtain Relay Output current status ON OFF 02 Read DI status Obtain Digital Input current status ON OFF 03 Read holding register Obtain current binary value of one or multiple registers 05 Control RO Control Relay Output ON OFF 16 Preset multiple registers Place specifc binary value into multiple registers
16. 3 screen AO1 lower limit setting Range 0 00 1 00 There is no sign digit when the limit is O When the limit is not 0 sign digit will be visible the sign can be adjusted by moving the cursor to the digit Press F and V A to edit the vaule Press V A at the last digit to confirm and go to the next screen Figure 3 36 AO1 lower limit setting The figure shows the lower limit is 0 Figure 3 37 AO1 upper limit setting 36 4 screen AO1 upper limit setting Except 100 100 all the other upper limit s absolute value cannot be smaller or equal to the lower limit s Under no circumstance can the upper limit be 0 Press F and V A to edit the vaule Press V A at the last digit to go to the next screen The figure shows the upper limit is 100 5 screen AO2 parameter setting Three options 0 volage 1 current 2 power Press F key to select Press V A to confirm and go to the next screen The figure shows AO2 is set as voltage Note 241 and 242 meter do not have this screen AO2 is set as what is being measured Figure 3 38 AO2 parameter setting 6 screen AO2 lower limit setting Range 0 00 1 00 There is no sign digit when AO2 is set as voltage Press F and V A to edit the vaule Press V A to confirm and go to the next screen The figure shows the lower limit is 0 Figure 3 39 AO2 lower limit setting 7 screen AO2 upper limit setting Ex
17. 3H 00H 00H 00H 21H 84H 65H Table 5 3 Protocol Illustration AcuDC 240 Serier ADC 240 Series Addr Slave device address Data start reg hi Start register address high byte Data start reg lo Start register address low byte Data of reg hi Number of registers high byte Data of reg lo Number of registers low byte CRC16 hi CRC high byte CRC16 lo CRC low byte 1 Read Relay Output Status Function Code 01 Query The master device sends query frame to the salve deivce Function Code 01 allows users to acquire the relay output status 1 0N 0 OFF of the slave device with the specified address Along with slave device address and function code query frame must contain the relay register starting address and the number of registers to be read AcuDC 240 relay output address starts from 0000H Relay1 0000H Relay2 0001H Table 5 4 depicts reading Relay 1 and Relay 2 status from slave address 17 Addr Fun DO start DO start reg DO Hor regs DO of regs CRC16 CRC16 reg hi lo hi lo Hi Lo 11H 01H 00H 00H 00H 02H BFH 5BH Table 5 4 Query frame of reading Relay Output status Response The slave device anwsers the master device s query The response frame contains slave device address function code data quantity and CRC check Each relay utilizes one bit 1 ON 0 OFF Table 4 5 depicts the response frame 54 2 Read DI status Function
18. 600V When the Measured Value is 300V AO is Measured Value x 100 Lower Limit 300 100 0 x5 600 x5 25V Upper Limit Lower Limit 100 0 2 AO is voltage type Full Range Value AO Set AO parameter as Current Upper Limit is 100 Lower Limit is 100 Full Range Value is 20A When the Measured Value is 10A AO is Measured Value 100 Lower Limit 10 100 100 20 x5 x5 1 25V Upper Limit Lower Limit 100 100 3 AO is current type Full Range Value AO Set AO parameter as Current Upper Limit is 100 Lower Limit is 0 Full Range Value is 20A When the Measured Value is 10A AO is Measured Value Rx 100 Lower Limit 10 Full Range Value o 0 AO 4 x5 x16 12mA Upper Limit Lower Limit 100 0 4 AO is current type Set AO parameter as Power Upper Limit is 100 Lower Limit is 0 Full Range Value is 12kW When the Measured Value is 6kW AO is Measured Value x 100 Lower Limit Lo Full Range Value 12 100 0 AO 44 x5 4 x16 8mA Upper Limit Lower Limit 100 0 AcuDC 240 Series ADC 240 Series Note 1 For 100 100 setup the Upper Limit value must be larger than the Lower Limit value For all other setup the absolute value of Upper Limit must be larger than the ab solute value of Lower Limit All Upper Limits cannot be set as 0 2 When the Measured Va
19. C 240 Series LALA AaDC 240 S When voltage and current are wired at the same time 0O V O y AcuDC 240 Output lt 0 External DC Power Current Hall Load Effect Sensor Voltage amp Current Wiring using Current Hall Effect Sensor Vdc Vdc Vdc Vdc LA eo AcuDC 240 3 Acupe 240 3 Note The shunt should be placed at Load Load negative side of load Voltage amp Current Direct Wiring Voltage amp Current Wiring using Shunt Vd er gues Vde Vdc Voltage Hall Effect Sensor Input Output 3 V wema pc ACUDC 240 Pe TI Poner Output External DC Power I H JuaunD Load Josuas 99443 Voltage amp Current Wiring using Hall Effect Sensors Note The load s negative must be connected to meter s current input terminal Current output terminal should be connected to the system s negative The load is serially con nected to the meter or the shunt The current input wire size is AWG15 16 or 1 5 2 5mm or equivalent resistance wire Communication AcuDC 240 series meter uses RS485 serial communication and the Modbus RTU protocol The terminals of communication are B and S 14 15 and 16 A is diferential signal 8 15 diferential signal and 5 is connected to the shie
20. DC 240 series meter can measure dc voltage current power Energy Ah etc 1 Energy AcuDC 243 type meter has the function of electric energy metering electricity measurement is divided into four parameters positive energy negative energy total energy and net energy Positive energy is current through the meter is to measure the energy generated cumulative values Negative energy is current through the meter in reverse the energy generated cumulative values Total energy is Positive energy and the absolute value of negative energy and Net energy is Positive energy and the negative energy difference value 2 Ah AcuDC 243 type meter has the function of Ah measuring when the measurement is divided into four parameters positive Ah negative Ah total Ah and net Ah Positive Ah is current through the meter is to measure the Ah generated cumulative values Negative Ah is current through the meter in reverse the Ah generated cumulative values Total Ah is Positive Ah and the absolute value of negative Ah and Net Ah is Positive Ah and the negative Ah difference value 44 AcuDC 240 Series AcuDC 240 series meter can be set up the DI of the I O module to counting mode can be cumulative number of DI input pulse signal Count value can see through communication also through the meter button to view Count value can be reset by communication or meter button operation With the function of data storage AcuDC 243 meter logs maximu
21. Onl R A High Byte Minute 0 59 y 0505H Start time Minute used Word R W 1 Low Byte reserve E in High Byte Year 00 99 0506H End time year month mode Word R W 1 2 High Byte day 1 31 0507H End time day hour Word R W 1 Low Byte hour 0 23 High Byte Minute 0 59 0508H End time Minute Word R W 1 Low Byte reserve Only The specified start used High Byte hour 0 23 0509H recording time hour in Word R W 1 Low Byte Minute 0 59 and minute mode 3 number of registers in 050AH Register number 1 26 0 Word R W 1 a log 050BH The contents of a log q 0 Word R W 26 ModBus Register 0524H 0525H reserve 91 057FH Table 5 20 Data Logging Setting address table The contents of one log Users can select any parameters they want to log from the 13 parameters In order to gen erate historical logs for the selected parameters users should program the meter so that selected parameters from the cooresponding Modbus registers can be copied to the histori cal log record that is to say if you want to log a certain parameters only need to set the cor 63 AcuDC 240 Serier AcaDC 240 Serier responding Modbus address in the register of data logging One parameter in the meter is taking up two Modbus registers The 13 parameters are voltage current power positive energy negative energy total energy net energy positive A
22. Table 2 1 Part name of AcuDC 240 2 1 2 Dimensions Unit mm inch 51 7 2 035 AcuDC 240 RS E _ ela G 18 E es am Er wo Ea L AAA Eu 72 00 12 8 0 504 Front View Side View Figure 2 2 AcuDC 240 Dimensions Environmental Before installation please check the environment temperature and humidity to ensure the AcuDC 240 series meter is being placed where it will not be damaged he installation enviormeny 1 Termperature AcuDC 240 operation temperture is 25 C 70 C which must fulfill the designated ermperature humidity and location Otherwise the mete will meet general user s requirements If a larger ill cause damage temperature range is needed please contact Accuenergy Please note it can influence the meter life negatively if the meter operates in extremly high or extremly low temperature environments AcuDC 240 storage temperature range is 40 C 85 C 2 Humidity 5 to 95 non condensing AcuDC 240 Series 3 Location AcuDC 240 series meter should be installed in a dry and dust free environment Avoid posing meter to excessive heat radiation and high electrical noise sources Installation Steps AuwDC 240 Serier AcuDC 240 series power meter is generally installed into the switchboard panel 1 Cut a square hole standard DIN See Figure 2 3 for dimensions Unit mm
23. Table 5 2 Function Code 2 4 Data Field Data field contains the data that terminals need to complete the request and the data that terminals respond to the request This data may be a numerical value address or setting For example Function Code tells the terminal to read one register Data Field needs to specify reading from which register and how many registers to read 2 5 Error Check Field The field allows the error check by master and slave devices Due to electrical noise and other interferences a group of data may be changed while transmitting from one location to the other Error Check ensures master or slave devices do not respond to the distorted data during the transmission which enhances the system security and efficiency Error Check uses 16 bit Cyclic Redundancy Check CRC 16 2 6 CRC Check 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 52 The receiving device recalculates the CRC value during reception of the message and com pares the calculated value to the actual value it received in the CRC field An error will be reported if the two values
24. The read all method accesses and reads the historical data log automatically the initial log number will automatically increaseuntil all the logs are retrievcd 47 AcuDC 240 Serier 5 1 MODBUS RTU Protocol 5 2 Communication Format 5 3 Communication Address Table AuwDC 240 Serier This chapter will mainly discuss how to operate the meter via communication port using software To master this chapter you should be familiar with Modbus and read other chapters of this manual to make sure that you have a good understanding of the functions and applications of this product This chapter includes Modbus protocol communication format and communication address table Modbus RTU protocol is used for AcuDC 240 s communication Data format and error check methods are defined in Modbus protocol The half duplex query and respond mode is adopted in Modbus protocol Modbus allows master device PC PLC etc to communicate with slave devices it will not allow data exchange between slave devices Therefore terminal devices will not engage the communcation link at initialization only responsed to the master s request 1 Transmission mode The mode of transmission defines the data structure within a frame and the rules used to transmit data A Coding System 8 bit A Start Bit 1 bit A Data Bits 8 bit A Parity Even Odd None 2 None 1 A Stop Bit 1 2 bit A Error Checking CRE 2 Modbus Protocol
25. User s Manual LLU N AG CopyRight 2014 V1 04 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 AcuDC 240 Series Accuenergy reserves all rights Document 1504E2104 Revision Date Sep 2014 The information contained in this document is believed to be accurate at the time of pub lication 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 repre sentative for latest product specifcations before ordering ADC 240 Series Please read this manual carefully before installation operation and maintenance The fol lowing symbols in this manual are used to provide warning of danger or risk during the installation and operation of the meters Electric Shock Symbol Carries information about procedures which must be fol lowed to reduce the risk of electric shock and personal injury a Alert Symbol Carries information about circumstances which if not considered may result in injury or death Prior to maintanence and repair the equipment must be de energized and grounded All maintainence work must be performed by qualified competent accredited professionals Accuenergy shall not be responsible or liable for any damages or injuries caused by im proper meter installation and or operation AcuDC 240 Se
26. V Press F key to select Press V A to go to the next screen Note only the voltage wiring via voltage hall effect sensor has the above two screens Figure 3 26 voltage hall effect sensor setting 9 screen clear Energy Display YES or NO YES means clear NO means not clear Press F key to select If YES is selected and then press V A energy will be cleared to 0 Figure 3 27 clear Energy 10 screen clear Ah Display YES or NO YES means clear NO means not clear Press F key to select If YES is selected and then press V A Ah will be cleared to 0 Figure 3 28 clear Ah 11 screen DI counter reset Display YES or NO YES means clear NO means not clear Press F key to select If YES is selected and then press V A DI counter will be cleared to 0 Figure 3 29 DI counter reset ADC 240 Series AaDC 240 Series 12 screen backlight brightness setting 5 levels of backlight brightness 1 is minimum light level 5 is maximum light level Press F key to select Press V A to go to the next screen Figure 3 30 backlight brightness setting 13 screen Date adjustment This page is only in data storage function of meter Press the F key to adjust the numerical press V A key switch digits and decide Figure 3 31 Date adjustment 14 screen Time adjustment This page is only in data stor
27. age function of meter Press the F key to adjust the numerical press V A key switch digits and decide Figure 3 32 Time adjustment 15 screen password settings This is the last screen in sys tem parameter setting mode The password can be changed in this page Press F and V A to edit the vaule Press V A at the last digit to return to the 1 screen Figure 3 33 password settings 34 By now the parameter settings are completed Pressing F and V A simultaneously will exit system parameter settings mode and return to the metering data mode In the system parameter setting operation after login page hold the F key for 3 seconds to enter the AO parameter setting mode or hold the V A key for 3 seconds to enter the RO parameter setting mode In the AO or RO setting mode key functions are the same as the one in system parameter settings mode F key is used to increase value by 1 for the flashing digit V A key is used to confirm the flashing digit and move the cursor At the last digit of the parameter pressing V A key will confirm and go to the next screen On any screen pressing F and V A simultaneously will exit AO or RO parameter settings mode and return to the system parameter settings mode 1 0 module has two types AO type and RO type For AO type module it offers two channel AO which can be selected as voltage or current type AO parameter can be voltage c
28. are not equal 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 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 signifcant bit LSB with a zero filled into the most signifcant 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 58 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 byte is appended first followed by the high order byte This chapter will illustrate the format indicated in Table 5 3 Hex value Addr Fun Data start reg Data start reg Data of Data ttof CRC16 CRC16 hi lo regs hi regs lo hi lo 06H 0
29. cept 100 100 all the other upper limit cannot be smaller or equal to the lower limit There is no sign digit when AO2 is set as voltage Press F and V A to edit the vaule Press V A to confirm and go to the next screen The figure shows the upper limit is 100 Figure 3 40 AO2 upper limit setting In the system parameter setting operation page after login hold the V A key for 3 seconds to enter the RO parameter setting page RO type IO module offers two RO There are three modes for RO Latch Momentary and Alarm The mode setting depends on the object requirement A circuit breaker uses Momentary The momentary delay time is 300 5000 ms Due to the relay action time error this delay time has up to 3 ms time error AaDC 240 Series 1 screen RO1 mode Three modes 0 Latch 1 Momentary 2 Alarm Press F key to select Press V A to confirm and go to the next screen AaDC 240 Series Figure 3 41 RO1 mode setting 2 screen when RO1 mode is set as Momentary mode the gna screen is momentary delay time The range is 300 5000 ms Press F and V A to edit the vaule Press V A to confirm and go to the next screen Figure 3 42 RO1 momentary mode setting 3 scrreen RO1 alarm parameter when RO is set as Alarm mode 0 no alarm 1 voltage 2 current 3 power Press F key to select Press V A to confirm and go to the next screen Fig
30. dow FEH memory is erasing FFH Noneffective data Window data time mark 6 byte 0604H 067BH window data1 dataN 4N byte Word R Invalid data set to 0 Table 5 22 Log Retrieval address table 1 Start record NO to read The start record number to reading record decided to record from what position began to read this value is to be set between the oldest record number and the newest record num ber When readed a window data start record number will automatically increase the num ber of a window If the increase of initial record number is greater than the newestest record number the starting record number the newest record number 1 For example began to set up start record number is 34 after read eight logs of a window start record number automatically into 42 2 Records number The number of records that fit within a window The value is not greater than the maximum number of records in a window The MAX number of records 240 the number of bytes in a single record 3 Record status The status of the current window Since the time to prepare a window may exceed an ac 67 AcuDC 240 Series AuwDC 240 Seriea ceptable Modbus delay 1 second the byte is characterized by read data validity if display is invalid window data should be ignored If set up correctly and read correctly return a valid data article number otherwise the return error markers this value i
31. e 1 no parity 1 stop bit None 2 no parity 2 stop bits Press F to select Press V A to go to the next screen Figure 3 21 Parity setting page Note All devices on the same communication bus should use the same baud rate and parity settings 31 AuDC 240 Series AaDC 240 Series Figure 3 23 full range shunt setting 32 4 screen full range current setting Range 20 50000 unit is A Press F and V A to edit the vaule Press V A at the last digit to go to the next screen Note only indirect current wiring has this screen Figure 3 22 full range current setting 5 screen full range shunt setting Range 50 100 unit is mV Press F and V A to edit the vaule Press V A at the last digit to go to the next screen Note only the current wiring via external shunt has this screen 6 screen current hall effect sensor setting Two modes 0 0 5V 4 20mA 1 0 4V 4 12 20mA Press F key to select Press V A to go to the next screen Note only the current wiring via current hall effect sensor has this screen Figure 3 24 current hall effect sensor setting 7 screen full range voltage setting Range 5 9999 unit is V Press F and V A to edit the vaule Press V A at the last digit to go to the next screen Figure 3 25 full range voltage setting 8 screen voltage hall effect sensor setting Two modes 0 0 5V 1 0 4
32. equired please contact us in advance Appendix C Version Information 1 version Add Ah DI counting Max Min and Data loging Modify Current wiring using shunt and Voltage amp Current 20120723 20140424 V1 01 V1 02 V1 03 20140911 wiring using shunt Add AO output setting page V1 04 20140929 Modify the rated voltage input range hall sensor voltage range and alarm voltage setting value of RO 79 AcuDC 240 Series Your Power and Automation Partner Accuenergy Corp Los Angeles Toronto Beijing North America Toll Free 1 877 721 8908 Web www accuenergy com Email support amp accuenergy com
33. h negative Ah total Ah net Ah DI1 count value and DI2 count value For example Log the current data registers 0200h and 0201h programmed to be recorded The number of registers in a log In a log a parameter using two registers if you select all of 13 parameters the are 26 reg isters to be used Log Status Block Only the AcuDC 243 meter which has the storage functionhas this functionha Function code 03H for reading MAX Records 0 350890 Uint32 R 2 Used Records 0 350890 Uint32 R 2 MAX records in the Word R 1 Retrieval window Newest NO of Records Uint32 R 2 Oldest NO of Records Uint32 2 High Byte Year 0709H Low Byte Month 070AH Newest Record Time High Byte day Word 070BH 512 00 Low Byte hour High Byte Minute Low Byte reserve High Byte Year 070CH Low Byte Month 070DH Oldest Record Time High Byte day Word 07051 51200 Low Byte hour High Byte Minute Low Byte reserve High Byte reserve 070FH memory status Low Byte FEH memory is Word erasing Other Erased Table 5 21 Log Status address table 1 MAX Records The MAX number of Records of memory can be stored in according to the maximum capac ity and a log amount of space is calculated 2 Used Records The number of Records has been recorded at present this article Numbers less than or equal to the maximum number of records 3 Max records in
34. ing hour display It is the accumulated running hours of the meter since being powered up The unit is hour The left figure shows the meter running hour is 1471 32 hours Press V A key to switch to load running hour display screen Press F key to return to metering data mode Note Current meter does not have this screen 2 screen load running hour display The running hour of the load connected with the meter In other words it is the accumulated hours where the current value has not been 0 Unit hour The left figure shows the load running hour is 52 13 hours Press V A key to switch to meter running hour display screen Press F key to return to metering data mode Note Voltage meter does not have this screen AuDC 240 Series AaDC 240 Series In the metering data mode hold V A key for 3 seconds to en ter meter serial number display mode It displays the last 8 digits of the meter serial number The left figure shows the meter serial number is DC12012501 Press V A key to return to the metering data mode Figure 3 55 meter serial number display 42 Chapter 4 Function Introduction 4 1 The basic function 4 2 DI counting function 4 3 Max Min 4 4 Data Logging 3 AaDC 240 This chapter will introduce you to the use of the important functions many advanced features can t separate through the button control need to interact through communication Acu
35. ion Data Loging NC No data loging D Data loging Only AcuRC243 Communication NC No communication C RS485 Modbus RTU X1 2DI 2A0 4 20mA 0 20mA X2 2DI 2A0 0 5V 1 5V NVO x3 2DI 2RO X4 201 200 X5 2DI 15Vdc Power Supply P1 100 240Vac 50 60Hz 100 300Vdc P2 20 60Vdc AO 0 20A Current A1 Shunt 50 100mV A2 Current type Hall Elememnt 4 20mA 12mA 8mA A3 Voltage type Hall Effect Sensor 0 5V 0 4V 1000V Full Range Value 1000Vdc 600V Full Range Value 600Vdc Voltage 300V Full Range Value 300Vdc TT 60V Full Range Value 60Vdc L 5V Via Hall Effect Sensor 0 5V 0 4V ratio settable Model AcuDC 241 Voltage Meter AcuDC 242 Current Meter AcuDC 243 Multifuncion Meter Example AcuDC 243 300 A2 P1 X1 C D AcuDC 240 Series ADC 240 Series Voltage Hall Effect Sensor Ordering Information Special order Please contact your local Accuenergy Representative for further details Note Current Hall Effect Sensor Ordering Information Special order Please contact your local Accuenergy Representative for further details 1 When the input voltage is above 1000V or the system design requires an isolation the voltage input can be selected as Via Hall Effect Sensor The Voltage Hall Effect Sen sor requires 0 5 V 2 1 0 X1 type is configured as 4 20mA by factory default X2 type as 0 5V by factory default If any other type is r
36. itors voltage AcuDC 242 is a current meter only monitors current AcuDC 240 is a multifunction meter monitors voltage current power and energy Voltage Vv e Current e Measurement Power P Energy E Ah Ah 201 240 o o 2DI 2RO Support o o 1 0 DI 2DI 2DO o counting 2DI 15Vdc o Communication RS485 Port o o Data Loging Trend Records Max Min Display LCD e e Dimensions 72x72x64 5mm Opening size 68x68mm e Standard Optional Blank Not Available Table 1 1 AcuDC 240 Models AcuDC 240 Series coy o O 2 1 Appearance and Dimensions 2 2 Installation Methods 2 3 Wiring The installation method is introduced in this chapter Please read this chapter carefully be fore beginning installation 2 1 1 Appearance AaDC 240 Series Figure 2 1 AcuDC 240 Appearance OCasing High intensity fire resistant engineering plastics Front Casing Visible portion after mounting onto a panel Display Large LCD display Key Two keys are used to select display and set OVoltage Input Terminals Used for voltage input Communication Terminals Communication output IO Module Optional IO module GIO Terminal Optional IO terminals including 2D1 2A0 2RO OPower Supply Terminals Power Supply Terminal Oinstallation Clips Used for securing the meter to the panel
37. its For voltage it can be set as 0 100 For current and power it can be set as 0 100 0 100 100 100 and 0 100 Selecting the proper upper and lower limits improves AO accuracy and efficiency 3 The relationship between AO and its related parameter AcuDC 240 Serier ADC 240 Series Measured Value X100 Lower Limit Full Range Value xX 5V 1 Voltage Type 0 5V AO Upper Limit Lower Limit Measured Value X100 Lower Limit Full Range Value Xx 4v 1 5V AO 1 Upper Limit Lower Limit Measured Value X100 Lower Limit Full Range Value X 20mA 0 20mA AO Upper Limit Lower Limit 2 Current Type Measured Value X100 Lower Limit Full Range Value X 16mA 4 20mA AO 4 Upper Limit Lower Limit Note for current and power 0 100 limit setup use absolute value for calculation Measured Value X 100 Lower Limit Full Range Value Upper Limit Lower Limit Measured Value X 100 Lower Limit Full Range Value Upper Limit Lower Limit for current and power 0 100 limit setup use reversed polarity of Measured Value for cal culation 4 AO parameter code is listed in the following table Voltage Current Table 2 3 AO parameter code The following are a few examples 1 AO is voltage type Set AO parameter as Voltage Upper Limit is 100 Lower Limit is 0 Full Range Value is
38. larm parameter when RO is set as Alarm mode 0 no alarm 1 voltage 2 current 3 power Press F key to select Press V A to confirm and go to the next screen Figure 3 49 RO2 alarm parameter setting 10 screen RO2 alarm inequality setting 1 larger than 0 smaller than Press F key to select Press V A to confirm and go to the next screen Figure 3 50 RO2 alarm inequality setting 11 screen RO2 alarm threshold setting The threshold setting range is the same as the measurement range Voltage 0 9999 Current 0 50000 Power 0 60000 Press F and V A to edit the vaule Press V A to confirm and go to the next screen Figure 3 51 RO2 alarm threshold setting Figure 3 52 RO2 alarm delay setting 12 screen RO2 alarm delay time 0 255 unit second The left figure shows the delay time is 15 When the alarm condition is met after 15 seconds alarm will be triggered Or when the alarm condition is no longer met after 15 seconds the alarm will be restored Press F and V A to edit the vaule Press V A to confirm and go to the next screen In I O parameter settings mode pressing F and V A simultaneously will exit and return to the system parameter sett ings mode In metering data mode hold F key for 3 seconds to go to meter information display mode Figure 3 53 meter running hour display Figure 3 54 load running hour display 1 screen meter runn
39. ld of twisted pair cable The overall length of the RS485 cable connecting all devices can not exceed 1200m 4000ft Utilizing a large number of RS485 devices and utilizing 2 high baud rate will make the communication range shorter AcuDC 240 works as Slave device Maser device can be PC PLC Data Acquisition Device or RTU In order to improve communcation quality please pay attention to the following A high quality Shielded Twisted Pair cable is very important ANG22 0 6mm or lower is recommended Two cables should be different colors Pay attention to single point earthing It means there is only one point of the shield ing connected to ground in a single communication link Every A should be connected to A B to B or it will infuence the network and possibly damage the communication interface T type connection topology should be avoided This means no new branches except from the starting point Keep communication cables away as much as possible from sources of electrical noise When several devices are connected to the same long communication line an anti signal reflecting resistor typical value 120 3000hm 0 25W is often used at the end of the circuit the last meter of the chain ifthe communication quality is distorted AcuDC 240 Series AaDC 240 Series lt IfaRS485 converter is used it should support optical isolation and surge protection Digital Input AcuDC
40. lue is out of the Lower Limit AO will be OV 1V or OmA 4mA When the Measured Value is out of the Upper Limit AO will be larger than 5V 20mA but the maximum will be 6V 5 8V or 23 2mA 24mA Relay Output AcuDC 240 series IO option has two relay outputs which are terminal R11 21 R12 22 and R21 23 R22 24 They can be used to remotely control circuit breakers The relay outputs are Form A normally open electromagnetic relay The nodal capacity is 3A 250Vac or 3A 30Vdc If the coil current is high a medium replay is recommended Power Supply Medium Relay R11 AC Medium Relay Coil R12 Mar AcuDC 240 Figure 2 15 Relay Output The wire size for the relay output circuit loop is AWG22 160r0 5 1 3mm The relay outputs have three options One is Latch Mode the output is ON and OFF state the other is Momentary Mode the output changes from OFF to ON holding it for a time period Ton and then go back to OFF state Ton time can be set as 300 5000 ms 20 The 3 one is Alarm Mode please refer to the next chapter for details Alarm Output AcuDC 240 series offers over under limit alarming function When the monitored param eter goes beyond below the preset limit and stays at the level over the preset amount of time delay the over under limit alarm will be triggered RO1 and RO2 can be arbitrarily as signed to the alarm event When an alarm happens the corresponding relay
41. m and minimum value statistics for voltage current and power as well as the time they occur All data is stored in non volatile memory so that statistic information can be preserved even when meter is shut off All maximum and minimum data can be accessed via communication or from the meter front but time stamps can only be accessed via communication Statistics can be cleared via communication or from the meter front The AcuDC 243 meter which has the data storage provides data logging that records the data at a set interval This meter has 4 MegaBytes of memory which gives it extensive data logging capabilities It has a real time clock that allows logs to be time stamped when log events are created 1 Data log settings The AcuDC 243 meter can set up 13 parameters most The parameters are voltage current power positive energy negative energy total energy net energy positive Ah negative Ah total Ah net AH DI1 count value and DI2 count value The user can according to need to set the required parameters usually set the data log need to set up the following contents 1 Enable data logging If enable the data logging the meter can log the data according to the set else the meter 45 AaDC 240 Series can t log the data in any conditions 2 Three Modes of historical log A Model if correctly set historical log can record without setting date and time depending on firs in firs out recycling log
42. ons meet DIN 72x72 requirements With a mounting depth of only 65mm the meter can even fit in small drawer type cabinets It utilizes a self lock installation mechanism eliminating the necessity of fix bolts which makes installation or removal quick and convenient User Friendly Interface AcuDC 240 series utilizes a clear high definition LCD screen with large characters The LCD screen comes with a brightness adjustable backlight which ensures easy observation of metering data in any enviornment With a large LCD screen display the four keys on the meter front allow users to observe multiple parameter data at the same time The meter parameter settings can be set either via front panel keys or the communication port The parameter settings are saved in non volatile EEPROM which remains when power is off High Safety and Reliability AcuDC 240 series meter was designed according to industrial standards It can run reliably under high power disturbance conditions This meter has been fully tested for EMC and safety compliance in accordance with multiple international standards The casing is highly fire resistant due to high quality durable engineering plastics DC Energy Management Systems Solar and Wind Energy Systems Industrial DC Control Systems DC Excitation Systems Metallurgy Galvanoplastics and Electroanalysis Industries AcuDC 240 series has three products AcuDC 241 AcuDC 242 AcuDC 243 AcuDC 241 isa voltage meter only mon
43. otected A four digit password 0000 to 9999 is required before accessing the parameter settings mode The factory default password is 0000 After entering the password press V A to go to the pa rameter selection page The meter will return to the metering mode if a wrong password is entered Figure 3 18 Password inquiry page 30 The following illustration is using AcuDC 243 as an example 1 screen Communication address setup It is used to set communication address which can be any integer 1 247 The left figure shows the address is 1 To change press F to add one to the flashing digit Press V A to confirm and move the flashing digit At the last digit press V A to save and go to the next screen Figure 3 19 Communication address setup Note Modbus RTU communication protocol requires that all meters on the same bus should have different addresses 2 screen Baud rate setting page Baud rate can be set as 1200 2400 4800 9600 19200 38400 The figure on the left indicates the baud rate is 19200 bps Baud rate editing is not by digit simply press F key to select the desired baud rate Press V A to go to the next screen Figure 3 20 Baud rate setting page Note Only meters with communication options have device address baud rate and parity setting screens 3 screen Parity setting page It can be set as Even Odd None 1 None 2 Even even parity 1 stop bit Odd odd parity 1 stop bit Non
44. r Limit Sign 0 1 2 0 Word 010DH AO1 Upper Limit 0 100 percentage 100 Word 0 010EH AO2 Parameter voltage 0 Word 1 current 2 power O10FH AO2 Lower Limit Sign 0 1 2 0 Word 0110H AO2 Lower Limit 0 100 percentage 0 Word 0111H AO2 Upper Limit Sign 0 1 2 0 Word 0112H AO2 Upper Limit 0 100 percentage 100 Word 0113H RO1 Mode O latch 1 momentary 2 Word 2 alarm 01 M t Ti 0114H omentary Ime 300 5000ms 1000 Word Delay 0 pd 0115H RO1 Alarm Parameter no Alarm 1 voltage 0 Word 2 current 3 power O 0116H RO1 Alarm Inequality smaller than 0 Word 1 larger than 0117H RO1 Alarm Time Delay 0 255 s 5 Word 0118H RO1 Alarm Threshold The PaE as full range Float 0119H value s 011AH RO2 Mode O latch 1 momentary 2 Word 2 alarm RO2 M t Ti 011BH omentary Ime 300 5000ms 1000 Word Delay AauDC 240 Seriea ADC 240 Series 0 no Alarm 1 voltage 011CH RO2 Alarm Parameter Word R W 2 current 3 power 0 smaller than 011011 RO2 Alarm Inequality Word R W 1 larger than O11EH RO2 Alarm Time Delay 0 255 s Word R W 011FH Th full RO2 Alarm Threshold a8 RA ange Float R W value s Backlight Bright ee eye ees ig Word R W Level Clear Energy 0 0 enable Word Ww Clear Meter Running Word w Hour Clear Load Running Ox0A enable Word Ww Hour Enable as bit 0 Level mode DI Working mode Count mode
45. r will be described in this chapter This includes viewing real time metering data and setting parameters using different key combinations ADC 240 Series The front of the AcuDC 240 series meter consists of an LCD screen and two control keys All display segments are shown in Fig 3 1 below 4 CTS Figure 3 1 All display segments 1 E Displays data of voltage current power energy kV kA kW MW Hz kvar 2 Mvar kVA MVA kWh Data unit kvarh kVAh No icon no communication One icon query sent 3 Communication i Two icons query sent and response received Bi Settings Mode Indicates the meter is in Settings Mode There are two keys on the front panel marked as F key and V A key Use these two keys Table 3 1 LCD Display to display different parameter data and parameter settings AcuDC 240 normally works in data display mode which shows real time measured data such as voltage current power AcuDC 240 Series AaDC 240 Series Voltage Meter Display For AcuDC 241 it only displays voltage U 220 2V Figure 3 2 Voltage Display Current Meter Display For AcuDC 242 it only displays current 1 49 99A Figure 3 3 Current Display Multifunction Meter Display For AcuDC 243 the screen displays voltage current and power The first line displays voltage the second line diplays current the third line displays power U 220 2V
46. ries Chapter DIMOU CHOW sonara cren torera 1 EEE RO EE ME 2 152 Areasiot Application ips EF Chapter 2 Installation 2 1 Appearance and Dimensions 2 2 Installation Methods issiinoiiinnnin innatos PAE 0 aA e INE Chapter 3 Meter Display and OperatiON cccccommmmmmmmmrmrs 3 1 Display Panel and Keys 3 2 Metering Data 3 3 System Parameter Settings 3 4 1 0 Parameter Setting Sissin isses iney aiton EEE ert SEEN RHN 3 3 Meter Information Display rsinni aisanana tin init Chapter 4 Function Introduction sssessreresseneseverervenenenerssvsvenessneneevenesevsneneenenenssenennenessnessevevensssser 4 1 The basic function 4 2 DI counting function 4 3 Max Min 44 Data Logo lisina aca Chapter5 Communications risas anna sii 5 1 Modbus RTU Protocol 5 2 Communication Format 5 3 Communication Address Table AaDC 240 Series APPEAR 73 Appendix A Technical Data and Specifications ssreesssssseereesvesssssserstervessssssseeseseessns 74 Appendix B Ordering IO r Mati ON usina 77 Appendix C Revision HIStory naaa 79 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 reliabil ity When you open the package you will find the following items 1 AcuDC 240 meter x1 2 Terminal Blocks x1 x5 depending on the model 3 IO module x1 depending on the model
47. s read only write any data is invalid 0 The biggest store trend in a single window number window data effective number of records FDH invalid Start record NO or invalid number of records in the window FEH memory 15 erasing FFH The window is invalid data 4 window Returns the record data effectively as a read only area The contents of each record is time mark 6 bytes data 1 data N 4N bytes note that the number of records in the window as an integer System Parameter Setting Address The system parameter settings including communication settings 1 0 settings use Func tion Code 03 to read Function Code 16 to preset Password 0 9999 0000 Word R W Device Address 1 247 1 Word R W Baud Rate 1200 38400 19200 Word R W 0 Even 1 Odd Parity Setting Z Noned r None 3 Word R W Full Range Current Value 20 50000 A 20 Word R W Full Range Shunt Value 50 100 mV 100 Word R W Current Hall Effect 0 0 5V 1 0 4V Sensor V Oen 6 Hall Effect S urrent Hall Effect Sen 0 4 20mA 1 4 12 20mA sor mA o1o74 Full Range Voltage 5 9999 1000 Word R W Value Volt Hall Effect Sen orogH 9 gt en 0 0 5V 1 0 0V 1 Word sor 0109H AO1 Parameter 0 voltage 1 Current 2 0 Word power O10AH AO1 Lower Limit Sign O 1 2 0 Word 010BH AO1 Lower Limit 0 100 percentage 0 Word 010CH AO1 Uppe
48. ter should be used in the auxiliary power supply loop if there is a power quality problem in the power supply 1A FUSE e LOS Power Supply SH N NC TO 6 6 O4 EMC filter Figure 2 9 Power Supply Wiring with EMC filter The wire size for the power supply is AWG16 22 or 0 6 1 5mmY AuwDC 240 Serier Voltage Input AcuDC240 has two voltage input options Direct Input and Via Hall Sensor The wire size for the voltage input is AWG16 22 or 0 6 1 5mm Please see the wiring diagrams for details Voltage Wiring Two ways Direct Input and Via Hall Sensor Vdc Vdc Vdc Vdc Voltage Hall Effect Sensor 1 v AcuDC 240 HO External DC Power Load Voltage Direct Wiring Voltage Wiring using Voltage Hall Effect Sensor Figure 2 10 Voltage Input Current Input Current Wiring Three ways Direct Input Via Shunt Via Hall Effect Sensor Vdc Vdc O 1 AcuDC 240 or Load Current Direct Wiring Vde Vdc S E acupc 240 lt un OL Load Current Wiring using Shunt Vdc Vdc Current Hall Effect Sensor AcuDC 240 Output External DC Power Load Current Wiring using Current Hall Effect Sensor Figure 2 11 Current Input AuwD
49. the Retrieval window In the Retrieval window can read the maximum number of Records 4 Newest NO of Records A record number for each record which means serial number show the sequence of records The first record starting from 1 increase a record the relative record number plus 1 so has 65 AcuDC 240 Series ADC 240 Series been accumulating Memory will delete the old record after record full but the new record number not reset continue to accumulate 5 Oldest NO of Records After memory record full It will delete the old data to record the new data The oldest NO of Records is the oldest record number under the current state 6 Newest Record Time stamp The latest record of recording time 7 Oldest Record Time stamp The oldest one record record time 8 memory status Check the state of the memory whether in erasing Log Retrieval Block Only the AcuDC 243 meter which has the storage functionhas this function Use Function code 03 to read Function code 16 to preset Reserve R W Start record NO to Oldest NO of Records Newest NO of read Records 1 UINT32 R W Records number High byte 1 the MAX record number in the High byte window low byte 0 the MAX record number in a Block 0603H Record status low Effective number of records in the window Word R W byte read only FDH Noneffective Start record NO or record Write Invalidate number in a win
50. ults from the meter Table 5 8 depicts reading slave device address 1 voltage AcuDC 240 voltage address is 0200H 0201H Addr Fun Data start reg Data start reg Data of regs Data of regs CRC16 CRC16 hi lo hi lo hi lo 01H 03H 02H 00H 00H 02H C5H B3H Table 5 8 Query frame of reading voltage Response Response frame contains slave device address function code data quantity and CRC check Table 5 9 depicts the response of V 402851D8H 2 6299953V Addr Fun Bytecount Pete Patat Data2 Data2 6 6 610 hi lo hi lo 01H o34 04H 40H 28 51 D8 52 31H Table 5 9 Response frame of reading voltage 4 Control Relay Output Function Code 05 Query This query frame forces the relay status to ON or OFF AcuDC 240 relay output address starts from 0000H Relay1 0000H Relay2 0001H Data FFOOH changes the relay status to ON data 0000H changes the relay status to OFF The relay will not be influenced by any other data input The following is to query slave device 1 to set relay status as ON Addr Fun Do addr hi Do addr lo Value hi Valuelo CRC16hi CRC16 lo 01H 05H 00H 00H FFH 00H 8CH 3AH Table 5 10 Control relay status query frame Response The correct response to this request is to send back the received data after the relay status is changed Addr Fun Do adar hi Do addr
51. ure 3 43 RO1 alarm parameter setting 4 screen RO1 alarm inequality setting 1 larger than 0 smaller than Press F key to select Press V A to confirm and go to the next screen Figure 3 44 RO1 alarm inequality setting 38 5 screen RO1 alarm threshold setting The threshold setting range is the same as the measurement range Voltage 0 9999 Current 0 50000 Power 0 60000 Press F and V A to edit the vaule Press V A to confirm and go to the next screen Figure 3 45 RO1 alarm threshold setting 6 screen RO1 alarm delay time 0 255 unit second The left figure shows the delay time is 15 When the alarm condition is met after 15 seconds alarm will be triggered Or when the alarm condition is no longer met after 15 seconds the alarm will be restored Press F and V A to edit the vaule Press V A to confirm and go to the next screen Figure 3 46 RO1 alarm delay setting 7 screen RO2 mode Three modes 0 Latch 1 Momentary 2 Alarm Press F key to select Press V A to confirm and go to the next screen Figure 3 47 RO2 mode setting 8 screen when RO2 mode is set as Momentary mode the an screen is momentary delay time The range is 300 5000 ms Press F and V A to edit the vaule Press V A to confirm and go to the next screen Figure 3 48 RO2 momentary mode setting AaDC 240 Series AaDC 240 Series 9 screen RO2 a
52. ure to do so may result in severe injury or death Power Supply a Alert Make sure the power supply meets the standard of the power supply voltage on the meter s nameplate 17 1 23 0111 0 112 DI21 DI22 NC V GND V DOO S Figure 2 6 AcuDC 240 terminal strip Before setting up the meter s wiring please make sure that the switchgear has an earth ground terminal Connect both the meter s and the switchgear s ground terminal together The following ground terminal symbol is used in this user s manual gt Flgure 2 7 Grouding Sign AcuDC 240 series meter power supply is 100 240Vac 50 60Hz or 100 300Vdc which is universally supported Please contact us for other voltage options The meter s typical power consump tion is very low and can be supplied by an independent source or by the measured load line A regulator or an uninterrupted power supply UPS should be used under high power fluctuation conditions The power supply terminals are 11 12 13 L N 6 1A FUSE o Power Supply O AcuDC 240 Series Figure 2 8 Power Supply Wiring The independent power supply circuit loop must have a fuse or air circuit breaker The fuse could be 1A 250Vac time delay type If circuit breaker is used a CE certified product with compliance of IEC947 is recommended Terminal G 13 must be connected to the ground for safety purposes An isolated transformer or EMC fl
53. urrent and power AO upper and lower limits include sign and percentage digit The sign digit has three options fl represents J repre sents E represents The percentage digit s range is 0 00 1 00 representing 0 100 When AO parameter is set as voltage the upper and lower limit setting is 0 100 When AO parameter is set as current or power there are four modes 0 100 0 100 100 100 and 0 100 Note 1 there is no sign digit when AO is set as voltage sign digit is invisible when per centage is 0 2 For limit setting 1 00 is 100 0 00 is 0 0 25 is 25 AcuDC 240 Series 2 3 WY N o A 3 y Figure 3 34 AO output setting Figure 3 35 AO1 parameter setting 1 screen AO output setting AO output types There are four modes 0 0 5V 1 1 5V 2 0 20mA 3 4 20mA Press the F key to change the type of value press V A key to con firm and go to the next screen settings page As shown AO output type is 4 20mA mode Note AO output type according to the type of IO module actually used to set setting error will result in an error AO output value 2 screen AO1 parameter setting Three options 0 volage 1 current 2 power Press F key to select Press V A to go to the next screen The figure shows AO1 is set as current Note 241 and 242 meter do not have this screen AO1 is set as what is being measured
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