AcuDC 240 DC Power & Energy Meter | Datasheet | 1 DESCRIPTION AcuDC 240 DC Power & Energy Meter Datasheet FEATURES +0.2% accuracy on voltage and current; 0.5% on power and energy +Optional data logging with adjustable log size + Optional RS485 Modbus- RTU communications + Compatible with DC current sensors, DC voltage sensors, Hall effect sensors, & shunts +Equip with a variety of I/O options including Analogue Output, Analogue Input, Relay Output or Digital Output + Standard 72mm x 72mm DIN size for drawer-type panel installation The AcuDC 240 is a DC energy meter designed to monitor and control DC power systems with a wide range of measurement parameters such as voltage, current, power and energy. Ideal for renewable energy applications, it supports bi-directional current measurement used in net metering, solar PV, and wind turbine power generation as well as other applications such as transportation systems, telecommunications, and power distribution systems.KEY FEATURES High Accuracy Measurements +With 0.5% accuracy on power & energy* and 0.2% accuracy on voltage & current, the AcuDC 240 meter captures precision metrics across DC systems up to 1000Vdc. Meter critical, real-time voltage, current, power, energy, and amp-hour parameters while viewing real-time data instantly on the multi-function display. Modbus-RTU Communications +Communicate all DC metered data to SCADA, PLC, or other external systems using industry-standard Modbus-RTU protocol via an on-board RS485 communication port. Daisy-chain multiple meters together for efficient data collection. I/O Modules +A variety of optional analogue, digital, relay, and alarm output combinations are available with optional I/O modules. Each module features a unique combination of DI, AO, AI, RO, or DO options to extend the capabilities of the AcuDC 240 meter. Certain modules also feature a Hall effect sensor power supply for additional flexibility. Built-In Data Logging +The AcuDC offers three, configurable log files where meter parameters such as power, energy, voltage, current, amp hour, and DI count data are recorded. Log at a 1 minute interval for up to four months for later analysis. *0.2% accuracy on power & energy available upon request. APPLICATIONS + DC Energy Management Systems + Power Distribution Systems + Renewable Energy + Industrial DC Control Systems + Metallurgy & Electroplating Industries +Light Rail Transit Systems +Electric Vehicle Charging +Data Centers +Cellular Tower MonitoringAcuDC 240 DC Power & Energy Meter | Datasheet | 3 SPECIFICATIONS Metering PARAMETERSACCURACYRESOLUTIONRANGE Voltage0.2%0.001V0~9999V Current0.2% 0.001A0~±50000A Power*0.5% 0.001kW0~±60000kW Energy*0.5%0.01kWh0~9999999.99kWh Drift with Temperature <100ppm/°C Stability 0.5‰/year I/O Options DIGITAL INPUT Optical Isolated Voltage2500Vac Input TypeDry Input Resistance100kΩ Input Voltage Range20~160 Vac/dc Input Current (Max)2mA Start Voltage15V Stop Voltage5V Pulse Frequency (Max) 100Hz, 50% Duty Ratio (5ms ON and 5ms OFF) SOE Resolution2ms DIGITAL OUTPUT (Photo-Mos) Voltage Range0~250Vac/dc Load Current100mA (Max) Output Frequency 25Hz, 50% Duty Ratio (20ms ON, 20ms OFF) Isolation Voltage2500Vac RELAY OUTPUT (RO) TypeMechanical contact, Form A Switching Voltage (Max)250Vac, 30Vdc Load Current5A(R), 2A(L) Set Time10ms (Max) Contact Resistance30mΩ (Max) Isolation Voltage2500Vac Mechanical Life1.5x10 7 ANALOGUE OUTPUT (AO) Output Range0~5V/1~5V, 0~20mA/4~20mA (Optional) Accuracy0.50% Temperature Drift50ppm/°C Typical Isolation Voltage500Vdc Open Circuit Voltage15V Load Capacity Current type, max load resistance: 750 Ohm Voltage type, max load current: 20 mA Standard Compliance & Certifications Safety StandardIEC 61010-1 EMC Standard IEC 55011, IEC 61000-6-2, IEC 61000- 3-2, IEC 61000-3-3 *0.2% accuracy on Power and Energy available upon request Input CURRENT INPUTS (Each Channel) Nominal Current Options 0~±10A(Direct Input, pick up current 0.01A) 0~±50000A (via Shunt or Hall Effect Sensor, programmable range) Shunt50~100mV (programmable) Hall Effect Sensor0~±5V/0-±4V, 4~20mA/12mA±8mA Power Consumption2W (Max) Accuracy0.20% VOLTAGE INPUTS (Each Channel) Nominal Full Scale Direct Input: 0~1000V Via Hall Effect Sensor: 0~9999V Input Impedance2MΩ Load<0.6W Accuracy0.20% ENERGY ACCURACY Active0.50% Communications RS-485 2-Wire Shielded Twisted Pair Cable Connection Half duplex, Optically Isolated 1200 to 38400bps Isolation Voltage: 2500Vac PROTOCOLS Modbus-RTU Control Power AC/DC CONTROL POWER Operating Range (P1) 100-240Vac, 50/60Hz, 100-300Vdc (P2) 20-60Vdc Power Consumption3W (typical) Operating Environment Operating Temperature -25°C to 70°C -13°F to 158°F Storage Temperature -40°C to 85°C -40°F to 176°F Relative Humidity5% to 95% Non-CondensingAcuDC 240 DC Power & Energy Meter | Datasheet | 4 FUNCTION LIST FunctionParametersAcuDC 243 Metering VoltageV CurrentI PowerP EnergyE Ampere-hourAh I/O X1: 2DI+2AO (4~20mA/0~20mA) Support DI count X2: 2DI+2AO (0-5V/1-5V) X3: 2DI+2RO X4: 2DI+2DO X5: 2DI+±15Vdc X6: 2AI±15Vdc (4~20mA/0~20mA) X7: 2AI±15Vdc (0~5V/1~5V) Datalogging All metering parameters can be recorded (Voltage, Current, Power, Energy, Ampere-hour, DI Count); Interval 1 minute; Can record 4 months Communication RS485 , Modbus RTU Display LCD Dimension 72.0 × 72.0 × 64.5mm (Cutout: 68.0×68.0 mm) / 2.84 × 2.84 × 2.54 inch (Cutout: 2.68 × 2.68 inch) Function; Option; Blank NA 2.02" (51.4mm) 2.02" (51.4mm) 2.58" (65.5mm) 0.71" (18.0mm) I/O Module Dimensions 2.95" (75.0mm) 1.57" (40.0mm) 3.07" (78.0mm) 3.07" (78.0mm) 2.36" (60.0mm) 3.07" (78.0mm) 3.07" (78.0mm) Side View Back ViewFront View DIN Rail Dimensions 2.68" (68.0mm)2.68" (68.0mm) 2.68" (68.0mm)2.68" (68.0mm) DIMENSIONS 2.84" (72.0mm) 2.84" (72.0mm)2.64" (67.0mm) 2.84" (72.0mm) 0.50" (12.8mm) 2.04" (51.7mm) Side View Front ViewCut Out 2.68" (68.0mm) 2.68" (68.0mm) Cut-OutWIRING DIAGRAMS Current Direct WiringCurrent Wiring Using ShuntVoltage Direct Wiring I+ 6 5 Load Vdc+Vdc- U+ U Vdc+Vdc- 1 3 AcuDC 240 AcuDC 240 AcuDC 240 *A physical jumper from terminal 3 to 6 must be connected. **Hall effect sensors can also be powered using the ±15V power supply from the X5, X6, or X7 modules. Voltage & Current Wiring using Hall Effect Sensors ** Voltage & Current Wiring using Current Hall Effect Sensor** Digital Input DI11 Digi t al Input DI12DI21DI22 17 18 19 20 S1 S2 Cu rr ent Hall Load Vdc+ Vdc- ±15 External DC Power External DC Powe + M G I+ 6 5 + M G3 1 U- U+ G G IN+ IN- Load Vdc+Vdc- 3 1 U- U+ ±15 External DC Power + M G I+ 6 5 Current Hall G AcuDC 240 AcuDC 240 AcuDC 240 Voltage Wiring using Voltage Hall Effect Sensor*Voltage & Current Direct WiringVoltage & Current Wiring using Shunt* Load Vdc+ Vdc- I+ 6 5 3 1 U- U+ Load Vdc+Vdc- Shunt 75mV I+ 5 6 3 1 U- U+ Vdc+ Vdc- + U- 3 G 1 M IN+ IN- U+ G ±15 External DC Power AcuDC 240 AcuDC 240 AcuDC 240 External Power Supply < 250Vac or 30Vdc I < 3A Analogue Output 4~20mA, R<500Ω Power Supply Wiring 21 R11 Relay Output Intermediate Relay External Power Supply R12R21R22 222324 21 AO1- 22 AO1+ 23 AO2- 24 AO2+ External Resistor R External Resistor R AcuDC 240 AcuDC 240AcuDC 240 Analogue OutputAcuDC 240 DC Power & Energy Meter | Datasheet | 6 ORDERING INFORMATION Meter Model - Voltage Option - Current Option - Power Supply Option - I/O Option - Communication - Datalogging AcuDC 243: Multifunction 1000V: Nominal Input Voltage 1000Vdc A0: 0~±10A P1: 100-240Vac 50/60Hz, 100-300Vdc X0: No I/O NC: No Communication ND: No Datalogging 600V: Nominal Input Voltage 600Vdc A1: Shunt (50~100mV)P2: 20-60Vdc X1: 2DI+2AO (4~20mA/0~20mA) C: RS485, Modbus RTU D: Datalogging 300V: Nominal Input Voltage 300Vdc A2: Current Hall Effect Sensor (4~20mA/12mA±8mA) X2: 2DI+2AO (0~5V/1~5V) 60V: Nominal Input Voltage 60Vdc A3: Voltage Hall Effect Sensor (0~±5/0~±4V) X3: 2DI+2RO 5V: Via Hall Effect Sensor (0-5V/0-4V), ratio settable X4: 2DI+2DO X5: 2DI+ ±15Vdc X6: 2AI ±15Vdc (4~20mA/0~20mA) X7: 2AI ±15Vdc (0~5V/1~5V) Ordering Example:AcuDC 243 - 300V - A2 - P1 - X1 - C - D ACCESSORIES DIN Rail Mounting Adapter The AcuDC DIN Rail Mounting Adapter is the easy way to mount the AcuDC energy meter on horizontal DIN rail. The adapter quickly secures to the DC meter plus any additional I/O options for a quick, secure installation. USB RS485 Converter This professional-grade, plug- and-play USB to Serial RS485 Converter is compliant with both USB 1.1 and 2.0 standards and is designed to provide a convenient, reliable USB connection to the AcuDC energy meter and other serial devices. Accuenergy (Canada) Inc. Los Angeles - Toronto - Beijing - Pretoria North America Toll Free: 1-877-721-8908 Web: www.accuenergy.com Email: marketing@accuenergy.com Revision Date: Mar 2023 Version 1.0.3 Specs Subject To Change Without Notice. Accessories (Optional) USB-RS485:USB-to-RS485 Converter DC-DIN:DIN Rail Mounting Accessory Ordering Example: USB-RS485 + + 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 (0~5V). The Voltage Hall Effect Sensor output range requires 0~5V. ISO9001 CertifiedNext >