AccuEnergy AcuDC 240 Series User Manual
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AccuEnergy AcuDC 240 Series User Manual

Power and energy meter
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2 4 0
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AcuDC 240 Series Power and Energy Meter
User's Manual

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  • Page 1 A C U D C 2 4 0 P O W E R & E N E R G Y M E T E R AcuDC 240 Series Power and Energy Meter User's Manual...

  • Page 2: Customer Service And Support

    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 (contact information please see the following page).
  • Page 3 To secure your warranty coverage, contact ACCUENERGY to obtain the registration card that must be filled out and sent or faxed back to ACCUENERGY with a copy of a dated proof of purchase. Products under warranty receive priority for repairs.
  • Page 4 Toronto Canada (Headquarter), Los Angeles and Beijing. WARNINGS GLOSSARY The following symbols in this manual and on AcuDC 240 series meters 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 followed to reduce the risk of electric shock and danger to personal health.

  • Page 5: Table Of Contents

    TABLE OF CONTENTS CUSTOMER SERVICE AND SUPPORT ..............PRODUCT WARRANTY ....................CHAPTER 1: Introduction to the AcuDC ..............1 1.1 Package Contents & Available Accessories ..........1 1.2 Introduction and Compliance ..............1 1.2.1 Introduction ........................1 1.2.2 Compliance ........................2 1.3 Applications & Industries ................2 1.4 Features &...
  • Page 6 3.2.6 Set Backlight Brightness ....................30 3.2.7 Meter Clock Setting ......................30 3.2.8 Password Setting ......................31 3.3 AcuDC Communication Setup ..............31 3.4 I/O Parameter Setup..................32 3.4.1 Meter Clock Setting .......................32 3.4.2 RO parameter setting ....................34 CHAPTER 4: Viewing Metering Parameters – VIA Display ......40 4.1 General Display on the AcuDC ..............40 4.2 View the Meter and Load Running Time ..........43 4.3 View the serial number from the meter ..........44...
  • Page 7 AcuDC 240 Series DC Power and Energy Meters Chapter 1: Introduction to AcuDC 1.1 Package Contents + Available Accessories 1.2 Introduction and Compliance 1.2.1 Introduction 1.2.2 Compliance 1.3 Applications & Industries 1.4 Features & Specifications 1.4.1 Features 1.4.2 Specifications...

  • Page 8: Chapter 1: Introduction To The Acudc

    1.2.1 Introduction Powerful Yet Cost-Effective AcuDC 240 series monitors DC voltage, current, power and energy. It supports bi- directional current measurement, and also displays meter running hour and load running hour. Analog Output applies to DCS system, industrial monitoring and control. AcuDC 240 has a combination of accurate measurement, intelligent multifunction and simple human machine interface.

  • Page 9: Compliance

    DC Energy & Power meters 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.

  • Page 10: Features & Specifications

    0.001 kW 0~±60000 kW Energy 0.5% 0.01 kWh 0~9999999.99 kWh Drift with <100ppm / °C Temperature Stability 0.5‰/year Voltage Input Range Voltage Direct Input0~1000V; Via Hall Effect Sensor0~1200V Input Impedance 2MΩ Load <0.6W Accuracy 0.2% V: 1.0 Revised: Jan. 2018 www.accuenergy.com...
  • Page 11 AcuDC 240 Series DC Energy & Power meters Voltage Current 0~±10A(Direct Input, pick up current 0.01A) Input Range 0~±50000A(Via Shunt or Hall Effect Sensor, program- mable range) Shunt 50~100mV(programmable) Hall Effect Sensor 0~±5V/0-±4V, 4~20mA/12mA±8mA Power Consumption 2W(MAX) Accuracy 0.2% Digital Input...
  • Page 12 (P1)100-240Vac, 50/60Hz, 100-300Vdc Input (P2) 20-60Vdc Consumption 3W (typical value) Installation 72 x 72 mm Panel mounted Table 1-3 lists the functions of AcuDC240 series. Table 1-3 AcuDC 240 Series Function AcuDC 241 AcuDC 242 AcuDC 243 • • Voltage •...

  • Page 13: Chapter 2: Installation - Physical Setup

    AcuDC 240 Series DC Power and Energy Meters Chapter 2: Installation - Physical Setup 2.1 Tools 2.1.1 Tools for Mounting 2.1.2 Tools for Wiring 2.2 Mounting 2.2.1 How to choose installation place 2.2.2 Mounting I/O modules onto meter 2.2.3 Mounting meter onto switchboard panel 2.3 Wiring...

  • Page 14: Tools For Mounting

    The meter and its I/O output channels can only be used as secondary protection. AVOID using the meter under situations where failure of the meter may cause injury or death. AVOID using the meter for any application where risk of fire may occur. V: 1.0 Revised: Jan. 2018 www.accuenergy.com...
  • Page 15 -40°C ~ 85°C. Humidity 5% to 95% non-condensing Location AcuDC 240 series meter should be installed in a dry and dust free environment. Avoid exposing meter to excessive heat, radiation and high electrical noise sources. V: 1.0 Revised: Jan. 2018 www.accuenergy.com...

  • Page 16: Mounting I/O Modules Onto Meter

    With the link pins, I/O module is linked to the meter. Insert the mounting clips to the counterpart of AcuDC 240 meter, and then press the I/O module lightly, so linking is established, as shown in Fig 2-2. V: 1.0 Revised: Jan. 2018 www.accuenergy.com...
  • Page 17 AcuDC 240 Series DC Energy & Power meters Tighten the installation screws. Note: Install I/O Module carefully to avoid damage; under no circumstances should any installation be done with the meter powered on. Failure to do so may result in injury or death.
  • Page 18 Chapter 2: Installation - Physical Setup Installation Steps AcuDC 240 series meter is generally installed into the switchboard panel. Cut a square hole (Standard DIN). See figure 2-5 for dimensions. Unit:mm Fig 2-5 Panel Cutout Remove the clips (10) from the meter, and insert the meter into the square hole from the front side, as shown in following figures.

  • Page 19: Wiring

    AcuDC 240 Series DC Energy & Power meters 2.3 Wiring Terminal Strips There are 3 groups of current terminal strips. There will be another terminal strip if the meter is connected with the I/O module. a. Voltage and Current Terminal Strip b.

  • Page 20: Wiring Control Power

    1A FUSE Power Supply AcuDC 240 EMC lter 2-10 Power Supply Wiring with EMC Filter Choice of wire power supply is AWG16-22 or 0.6-1.5 mm V: 1.0 Revised: Jan. 2018 www.accuenergy.com...

  • Page 21: Current Input Wiring

    AcuDC 240 Series DC Energy & Power meters 2.3.2 Current Input Wiring AcuDC 240 meter current can be wired in three different ways: direct wiring, wiring using a shunt and wiring using a current Hall Effect sensor. NOTE: When wiring using a shunt or Hall Effect Sensor these must be wired on the negative terminal of the load that is being measured.
  • Page 22 Voltage, Current, Terminal Strip Load Fig 2-11 C Wiring using a Hall Effect Sensor Fig 2-11 Current Input Wiring Table 2-2 Accuenergy Line of Shunts/Hall Effect Sensors for Measuring Current Shunt Hall Effect Sensor (Works with AcuDC 243 A1 Current Input Option)

  • Page 23: Voltage Input Wiring

    DC Energy & Power meters 2.3.3 Voltage Input Wiring AcuDC 240 series meter Voltage can be wired in two different ways: direct wiring and wiring using a voltage Hall Effect sensor. Choice of wire for the voltage input is AWG16-22 or 0.6~1.5 mm...

  • Page 24: Current & Voltage Wiring At The Same Time

    Voltage, Current, Terminal Strip Load Fig 2-13a Direct Wiring Vdc- Vdc+ Meter I/O terminal strip DI11 DI12 DI21 DI22 shunt Voltage, Current, Terminal Strip Load Fig 2-13b Voltage and Current Wiring Using a Shunt V: 1.0 Revised: Jan. 2018 www.accuenergy.com...
  • Page 25 AcuDC 240 Series DC Energy & Power meters Vdc- Vdc+ Meter Hall E ect Sensor I/O terminal strip DI11 DI12 DI21 DI22 Voltage, Current, Terminal Strip Load Fig 2-13c Voltage and Current Wiring Using Current Hall Effect Sensor Hall E ect Sensor...
  • Page 26 0-20mA/4-20mA(max 24mA) mode, and the voltage output 0-5V/1-5V(max 6V) mode, as shown in figure 2-15. NOTE: Each module can only has one type of output, please specify when ordering. Fig 2-15 Analog Output Wiring V: 1.0 Revised: Jan. 2018 www.accuenergy.com...

  • Page 27: Communications Wiring

    DC Energy & Power meters Relay Output The AcuDC 240 series I/O option has two relay outputs, which are terminal (21), (22) and (23), (24) as shown in Fig 2-7. They can be used to remotely control circuit breakers. The relay outputs are form A (normally open) electromagnetic relay. The nodal capacity is 3A/250 Vac or 3A/30Vdc.

  • Page 28: Removing Meter For Servicing Or Maintenance

    Disconnecting the Voltage Inputs Using a #2 flathead screw driver, turn each of the screws on pins 1 and 3 counter- clock wise. Stop turning when the wires can be easily removed from their housing. V: 1.0 Revised: Jan. 2018 www.accuenergy.com...
  • Page 29 Using a #2 flat head screw driver, screw driver, turn the screws on pins 5 and pin 6 counter-clock wise. Stop turning when the wire can be easily removed from its housing. Cleaning the Meter ACCUENERGY recommends using a dry cloth to wipe the meter. V: 1.0 Revised: Jan. 2018 www.accuenergy.com...

  • Page 30: Chapter 3: Installation - Configuration Parameter Set-Up Via Display

    AcuDC 240 Series DC Power and Energy Meters Chapter 3: Installation - Configuration parameter set-up via display 3.1 Display panel and keys 3.2 General parameter setup 3.2.1 Key’s function in parameters setup 3.2.2 Configure AcuDC to work with shunt 3.2.3 Configure AcuDC for current hall effect sensor 3.2.4 Configure AcuDC for current and...
  • Page 31 SET-UP VIA DISPLAY 3.1 Display Panel and Keys The front of the AcuDC 240 series meter consists of an LCD screen and two control keys. All the display segments are illustrated in Fig 3-1. Users should note that all the segments will not display in a single page under normal conditions.
  • Page 32 0: 0 ~ ±5V; 0; 1 Hall Effect 1: 0 ~ ±4V Sensor No: energy not Energy, Ah and Energy cleared; DI counter clear delete(energy Yes: clear energy setup clear) to 0 V: 1.0 Revised: Jan. 2018 www.accuenergy.com...
  • Page 33 AcuDC 240 Series DC Energy & Power meters Label Paramters Default Options Description Note No: means DI Energy, Ah DI counter counter not and DI count- delete(DI cleared DI; er clear setup counter clear) Yes: clear DI counter to 0...

  • Page 34: Configure Acudc To Work With Current Hall Effect Sensor

    Current Hall Effect sensor output range in the AcuDC, so that it can read accurately from the Hall Effect Sensor. To change the settings from the meter’s display, first get to the parameter setting mode. V: 1.0 Revised: Jan. 2018 www.accuenergy.com...

  • Page 35: Configure Acudc To Work With Current And Voltage Hall Effect Sensor

    AcuDC 240 Series DC Energy & Power meters Refer to section 3.2.2 configure AcuDC to work with Hall Effect Sensor, first set the full range current setting as shown in Fig 3-2. Press ‘F’ and ‘V/A’ simultaneously whiles in the metering display mode to get to the system parameter setting mode.

  • Page 36: Clear Energy, Ah And Di Counter

    ‘YES’, which means clear charge Ah, and the charge Ah will Fig 3-9 Clear Ah be cleared to 0. After you choose ‘YES’ or ‘NO’, press ‘V/A’ to confirm and go to the next screen. V: 1.0 Revised: Jan. 2018 www.accuenergy.com...

  • Page 37: Set Backlight Brightness

    AcuDC 240 Series DC Energy & Power meters Press ‘F’ and ‘V/A’ simultaneously whiles in the metering display mode to get to the system parameter setting mode. In parameter setting mode, press ‘V/A’ until you get to the ‘ddEL’ screen, as shown in Fig 3-10. The screen displays ‘No’, which means DI counter not cleared’.

  • Page 38: Password Setting

    19200 and 38400. Fig 3-18 shows the baud rate is 19200 bps. Press ‘F’ to select the desired baud rate, and then press ‘V/A’ to confirm and go to the next screen. Fig 3-16 Baud Rate Setting V: 1.0 Revised: Jan. 2018 www.accuenergy.com...

  • Page 39: I/O Parameter Setup

    AcuDC 240 Series DC Energy & Power meters After Baud rate setup, the next screen is the Parity setting page, or in parameter setting mode, press the ‘V/A’ button until you see ‘CHEC’ on the screen. Parity can be set as EVEN: even parity, 1 stop bit;...
  • Page 40 0. Press ‘F’ to edit the value, and then press ‘V/A’ key to confirm and scroll to the next screen setting page. Fig Fig 3-21 AO1 Up Limit 3-21 shows the AO1 up limit is set as +100%. Setting V: 1.0 Revised: Jan. 2018 www.accuenergy.com...

  • Page 41: Ro Parameter Setting

    AcuDC 240 Series DC Energy & Power meters In AO parameter setting mode, press ‘V/A’ until the screen ‘Ao 2P’ displays (as shown in Fig 3-22). It is AO2 parameter setting. There are three options: 0: voltage; 1: current; 2: power. Press ‘F’ key to select the parameter number (0, 1, or 2), and then press ‘V/A’...
  • Page 42 Voltage: 0 ~ 3000V; Current: 0 ~ 50000A; Power: 0- 60000kW. Press ‘F’ to edit the value, and press ‘V/A’ key to confirm and scroll to the next screen setting page. Fig 3-29 RO1 Alarm Threshold Range Setting V: 1.0 Revised: Jan. 2018 www.accuenergy.com...
  • Page 43 AcuDC 240 Series DC Energy & Power meters RO1 alarm delay setting: In RO parameter setting mode, if RO1 mode is set as 2, Alarm, press ‘V/A’ key until the screen ‘Ro1t’ displays. The alarm delay time range is 0 ~ 255 s. In Fig 3-30, the alarm delay time is 15 seconds.
  • Page 44 0: Latch; RO1 mode 0; 1; 2 1:Momentary; 2: Alarm RO1 momentary delay 300 ~ 5000 Unit: ms time RO1 alarm parameter 0; 1; 2; 3 0: no alarm; 1: voltage; 2: current; 3: power V: 1.0 Revised: Jan. 2018 www.accuenergy.com...
  • Page 45 AcuDC 240 Series DC Energy & Power meters Label Paramters Options Description 0: smaller than; RO1 alarm inequality 0; 1 1: larger than Voltage: 0 ~ 3000 V; RO1 alarm threshold Current: 0 ~ 50000A; range Power: 0~ 60000kW. RO1 alarm delay...
  • Page 46 AcuDC 240 Series DC Power and Energy Meters Chapter 4: Viewing Metering Parameters via Display 4.1 General Display on the AcuDC 4.2 View the Meter and Load Running Time 4.3 View the Serial Number from the Meter...

  • Page 47: Chapter 4: Viewing Metering Parameters - Via Display

    AcuDC 240 Series DC Energy & Power meters CHAPTER 4: VIEWING METERING PARAMETERS – VIA DISPLAY You can view different information from the metering screen. For example, you can view voltage, current, power, energy, electric charge and clock information. In the metering screen, press ‘F’ to go to next screen, press ‘V/A’ to go to the different windows to view different information.
  • Page 48 Total Energy (absolute sum of import energy and export energy), and E4 = Net Energy (algebraic sum of import energy and export energy). (a) Import Energy (b) Export Energy (c) Total Energy (d) Net Energy Fig 4-4 Energy Display V: 1.0 Revised: Jan. 2018 www.accuenergy.com...
  • Page 49 AcuDC 240 Series DC Energy & Power meters Press ‘F’ to go to the third screen. The third screen shows Electric charge. You can press ‘V/A’ on the electric charge screen to switch between different types of charges. Ah1 = Import Charge, Ah2 = Export Charge, Ah3 = Total Charge (absolute sum of Import Charge Ah and Export Charge Ah), and Ah4 = Net Charge (algebraic sum of Import Charge Ah and Export Charge Ah).

  • Page 50: View The Meter And Load Running Time

    In this meter information display mode, you can press ‘V/A’ to switch between the meter running hours and load running hours. ‘r’ means meter running hours while ‘L’ means load running hours. (a) Meter Running (b) Load Running Time Time Fig 4-8 Running Time Display V: 1.0 Revised: Jan. 2018 www.accuenergy.com...

  • Page 51: View The Serial Number From The Meter

    AcuDC 240 Series DC Energy & Power meters 4.3 View the serial number from the meter If you press down the ‘V/A’ button for about 3 seconds while in the metering data mode, you will get to the serial number display mode. You can press ‘V/A’ to exit the serial number display mode.

  • Page 52: Chapter 5: Viewing Real-Time Readings Via Acuview Software

    AcuDC 240 Series DC Power and Energy Meters Chapter 5: Viewing Real-Time Readings via Acuview Software 5.1 Connection Setup 5.1.1 Wiring 5.1.2 Acuview software setup 5.2 Configuration Parameters Setup 5.2.1 General meter parameter setting 5.2.2 Configure the Data Log using the meter’s memory...
  • Page 53 AcuDC 240 Series DC Energy & Power meters CHAPTER 5: Viewing Real-time Readings Via AcuView Software This chapter will mainly discuss how to use the meter via the communication port using software. It is highly recommended that previous chapters be read before moving onto Chapter 5, a familiarity with Modbus would also be helpful.
  • Page 54 Manager window, double click on ‘Port (COM&LPT)’ from the dropdown list. Find the ‘USB Serial Port (COMx)’ the number in brackets is the port number, i.e. COM4. Please select the corresponding Com Port here. V: 1.0 Revised: Jan. 2018 www.accuenergy.com...
  • Page 55 AcuDC 240 Series DC Energy & Power meters 3. Add Device: After performing step 1 and 2 above, you need to add a device to communicate with. To add a new device, do one of the following: 1) Click Operation >Add Device 2) Click the icon The Add Device box is shown as Fig 5-3.
  • Page 56 Voltage and Current: If you are measuring your voltage using a voltage Hall Effect sensor and/or your current using either a Hall Effect sensor or a shunt, you will have to set the Voltage and/or Current sections. V: 1.0 Revised: Jan. 2018 www.accuenergy.com...
  • Page 57 AcuDC 240 Series DC Energy & Power meters RO1 Output Mode/RO2 Output Mode: This is available with the ‘X3’ module Choose between the three modes: • Latch: To manually turn on and off the relay • Momentary: To turn on the relay for a set number of seconds before it goes back off.

  • Page 58: Configure The Data Log Using The Meter's Onboard Memory

    You can set up the meter to log data on the onboard memory. • From the left navigation panel click on the settings tab then click ‘Data Log’ to access the data log setting page (as shown in Fig 5-5). V: 1.0 Revised: Jan. 2018 www.accuenergy.com...
  • Page 59 AcuDC 240 Series DC Energy & Power meters Fig 5-5 Data Log readings Parameter Selection: Select the parameters you would like to log (from the left box), click ‘Add’ to add them to the box on the right. Enable Data Log: Make sure you check the box ‘Enabled’ to enable data log.

  • Page 60: Configure The Data Log To Log The Readings On The Computer's Memory

    5.2.3 Configure the data log to log the readings on the computer’s memory This applies to AcuDC 240 series meters with communication option; the meters do not need to have onboard memory since the data will be logged directly on the computer’s memory.
  • Page 61 AcuDC 240 Series DC Energy & Power meters Fig 5-7 Data Log settings In data log setting, as shown in Fig 5-7, make sure you check the ‘Enabled’ box in the window. Under the ‘Logging Items of Selection’ Section: click on the required groups of parameters you will like to log.
  • Page 62 Take note of the warning in order to prevent your files from being corrupt. Fig 5-8 Warning To get help or more information on the Acuview software, please click ‘help’ in the main menu bar, of click the icon V: 1.0 Revised: Jan. 2018 www.accuenergy.com...

  • Page 63: Viewing Metering Parameters

    AcuDC 240 Series DC Energy & Power meters 5.3 Viewing Metering Parameters 5.3.1 Real-Time Metering From the left navigation panel click on the ‘Readings’ tab and then select ‘Real-Time Metering’ to view the meter’s real time data. You can read voltage, current, energy, charge etc, as shown in Fig 5-9.

  • Page 64: Reading Data Log On Meter's Onboard Memory

    5.2.2 (Configure the Data Log using the meter’s onboard memory). On this window you can view the data log, while the maximum record number is 85995. Fig 5-12 Reading Data Log on Meter’s Onboard Memory V: 1.0 Revised: Jan. 2018 www.accuenergy.com...

  • Page 65: Reading Data Log On The Computer's Memory

    AcuDC 240 Series DC Energy & Power meters 5.3.3 Reading Data Log on the computer’s memory Find the data log files from the specified folder location where the file was saved. The parameter settings for data log on the computer’s memory refer to section 5.2.3. If you chose the default path, there is a folder named MonData in the Acuview installation directory where all the data log files are stored.

  • Page 66: Appendix

    AcuDC 240 Series DC Power and Energy Meters Appendix A. Troubleshooting B. Modbus Register Map B.1 MODBUS-RTU Protocol B.2 Communication Format B.3 AcuDC 240 Communication Address Table C. Ordering Information D. Glossary of Definitions...
  • Page 67 • Ensure that the Hall Effect sensor is being powered. If the sensor was purchased from Accuenergy then the sensor will need a ±15V dc power supply. • Ensure that the wiring of the sensor is to the AcuDC is correct.
  • Page 68 • Check that the settings in the meter are configured to read accurately from the shunt. • Press ‘F’ and ‘V/A’ simultaneously whiles on the meter data mode to get to the settings mode. V: 1.0 Revised: Jan. 2018 www.accuenergy.com...
  • Page 69 AcuDC 240 Series DC Energy & Power meters • A password screen will display. Leave the password as default ‘0000’ and press ‘V/A’ to enter the setting mode; the communication address ‘AddR’ screen will display next. • Press ‘V/A’ until you get to the ‘I In’ screen. Enter the rated current input of the shunt in this screen.

  • Page 70: B. Modbus Register Map

    The mode of transmission defines the data structure within a frame and the rules used to transmit data. • Coding System 8 bit • Start Bit 1 bit • Data Bits 8bits • Parity Even/ Odd/ None2/ None1 • Stop Bit 1/2bit • Error Checking V: 1.0 Revised: Jan. 2018 www.accuenergy.com...
  • Page 71 AcuDC 240 Series DC Energy & Power meters B.1.2 Modbus Protocol 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, it’ll implement the data’s task. Afterwards, the unit puts its own data with the acquired header, and sends back the frame to the sender.
  • Page 72 CRC value. When the CRC is appended to the message, the low-order byte is appended first, followed by the high-order byte. V: 1.0 Revised: Jan. 2018 www.accuenergy.com...

  • Page 73: Communication Format

    AcuDC 240 Series DC Energy & Power meters B.2 Communication Format This section will illustrate the format indicated in Table B-3. Table B-3 Protocol Illustration (Hex value and Decimal value) Data Start Data Start Data # of Data # of...
  • Page 74 Table B.6 depicts reading DI1 to DI2 status of the slave device with the address of 17. Table B-6 Query Frame of Reading DI Status Data Start Data Start Data # of Data # of Addr CRC16 Hi CRC 16 Lo Reg Hi Reg Lo Regs Hi Regs Lo V: 1.0 Revised: Jan. 2018 www.accuenergy.com...
  • Page 75 AcuDC 240 Series DC Energy & Power meters Response The slave device answers the master device’s query. The response frame contains slave device address, function code, data quantity and CRC check. Each DI utilizes one bit (1=ON, 0=OFF). Table B-7 depicts the response frame.
  • Page 76 The correct response to this request is to send back the received data after the relay status is changed. Table B-11 Response Frame of Control Relay Status Addr DO Addr Hi DO Addr Lo Value Hi Value Lo CRC16 Hi CRC 16 Lo V: 1.0 Revised: Jan. 2018 www.accuenergy.com...
  • Page 77 AcuDC 240 Series DC Energy & Power meters B.2.5 Read Data (Function Code 03) Query Function Code 16 (10 H Hex) allows the user to modify the contents of multiple registers. AcuDC 240 system parameters can be written by this function code.

  • Page 78: Acudc240 Communication Address Table

    Table B-15 Running Time Address Table Address (Hex) Address (dec) Parameter Range Data Type Property Meter run- 0280H-0281H 640- 641 long ning time 999999999 Load run- 0282H- 0283H 642- 643 long ning time 999999999 V: 1.0 Revised: Jan. 2018 www.accuenergy.com...
  • Page 79 AcuDC 240 Series DC Energy & Power meters Energy The data space below is for energy; Function Code: 03 Read; 16 Write Table B-16 Energy and Charge (Ah) Address Table Address (Hex) Address (dec) Parameter Range Data Type Property 0300H- 0301H...
  • Page 80 Power MAX Float 040BH 040CH High byte: year; low byte: month Time of occurrence, Year, Month, Day, Hour, Word 040DH High byte: day; low byte: hour Minute, Second 040EH High byte: minute; low byte: second V: 1.0 Revised: Jan. 2018 www.accuenergy.com...
  • Page 81 AcuDC 240 Series DC Energy & Power meters MIN records (Data obtained only by AcuDC 243 meter equipped with storage function.) Function code: 03H for reading Table B-20 MIN Records Address Table Address Address Parameter Range Data Type Property (Hex)
  • Page 82 Word time: hour and ute(0~59) mode 3) minute Number of regis- 050AH 1290 Register number: 1~26 Word ters in a log The contents of 050BH- 1291-1316 a log (ModBus Word 0524H Register) V: 1.0 Revised: Jan. 2018 www.accuenergy.com...
  • Page 83 AcuDC 240 Series DC Energy & Power meters The contents of one log Users can select any parameters they want to log from the 13 parameters. In order to generate historical logs for the selected parameters, users should program the meter so that selected parameters from the corresponding Modbus registers can be copied to the historical log record.
  • Page 84 The MAX number of Record of logs is determined by the maximum capacity and the memory space occupied by one log. 2) Number of records Number of records is the number of records that has currently been logged, which should be less than or equal to MAX number. V: 1.0 Revised: Jan. 2018 www.accuenergy.com...
  • Page 85 AcuDC 240 Series DC Energy & Power meters 3) MAX Records in the Retrieval Window In the Retrieval Window, the maximum number of records can be read. 4) Newest Serial No. of Records The serial number of the first record is 1, and then is accumulated by 1 as one more record is put in.
  • Page 86 Window displays valid record data, read-only. The contents of each record is: time mark (6 bytes) + [data1 ~ data N] (4N bytes). Note: the number of records in the window is an integer. V: 1.0 Revised: Jan. 2018 www.accuenergy.com...
  • Page 87 AcuDC 240 Series DC Energy & Power meters System Parameter Setting Address The system parameter settings, including communication settings and I/O settings, use Function Code 03H to read, Function Code 16H to preset. Table B-24 System Parameter Settings Address Address...
  • Page 88 Clear DI Count 0126H 1: Clear Word Value Bit0: Clear DI1 Bit1: Clear DI2 0127H Clear Ah 0X0A: Effective Word Clear MAX/MIN 0128H 0X0A: Effective Word Value Clear Data Log- 0129H 0X0A: Effective Word ging V: 1.0 Revised: Jan. 2018 www.accuenergy.com...
  • Page 89 AcuDC 240 Series DC Energy & Power meters DI Status Use Function Code 02 to read DI status. Table B-25 DI Address Table Address (Hex) Address (dec) Parameter Range Data Type Property 0000H 1=ON; 0= OFF 0001H 1=ON; 0= OFF Relay Status Use Function Code 01 to read Relay Status, Function Code 05 to control.

  • Page 90: Ordering Information

    NOTE: When the input voltage is above 1000V, or the system design requires an isolation sensor, the voltage input can be selected as Via Hall Effect Sensor (0~5 V). The Voltage Hall Effect Sensor output range requires 0~5 V. V: 1.0 Revised: Jan. 2018 www.accuenergy.com...

  • Page 91: Glossary Of Definitions

    0 to 20mA or from 4 to 20mA. Baud Rate:  Baud rate is the data transmission rate. In the AcuDC 240 series power meter, the Baud Rate is used to define the communication rate of RS485, which can be set as 1200, 2400, 4800, 9600, 19200 or 38400.
  • Page 92 Existence of relays as outputs makes it easier to connect with external devices. Shunt: is a device which allows electric current to pass around another point in the circuit by creating a low resistance path. V: 1.0 Revised: Jan. 2018 www.accuenergy.com...
  • Page 93 MAKE ENERGY USAGE SMARTER ACCUENERGY•(CANADA)•INC. TF:•1-877-721-8908 INT:•+1-416-497-4100 2•Lansing•Square,•Suite•700 FAX:•+1-416-497-4130 Toronto,•ON•M2J•4P8,•Canada E:•marketing@accuenergy.com...

This manual is also suitable for:

Acudc 242Acudc 241Acudc 243

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