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. The AcuDC 240 supports bi-directional current measurement used in net metering, solar PV, wind turbines, transportation systems, cellular communication towers, power distribution systems, IT networks, and more. It can also be equipped with digital inputs for switch monitoring, relay outputs for remote control, and over-range alarms. The latest model enables real-time monitoring of EV charging stations and individual EV motors, with detailed insights including accumulated totals and historical data logs. It’s compatible with Class 0.1% accuracy DC shunts, supporting inputs from 50A to 2000A.
| NAME | CATEGORY | |
|---|---|---|
| Product Datasheet | Download PDF | |
| Installation User's Manual | Download PDF | |
| Modbus Map | View page | |
| Web Learning Material | View page | |
| Support FAQ | View page | |
| AcuView PC Software | View Software |
DC metering is used in specific applications to measure, collect, and store real-time data for DC power systems. Energy professionals use DC meters to monitor power generation, power usage, or to detect system faults to meet specific performance goals, reduce cost, or to verify energy integrity in their facility. It is used in various industries such as solar systems, EV charging stations, battery energy storage systems (BESS), cell towers, data centers, and light rail transportation.
AcuDC 240 is purpose-engineered to deliver high-precision data to a wide variety of DC metering applications to match your project requirements. The DC energy meter can be configured to operate on a range of voltages and with various current sensors, power supplies, input/output modules, Modbus RS485 communications, or data logging options.
| Voltage Rating |
|---|
| Choose from five voltage rating options, up to 1000Vdc directly or via voltage sensor with 0-5Vdc output. |
| Current Input |
| Compatible with 0-10A direct input, or using external shunt (50-100mV output) or current hall effect sensor (4-20mA or 0-5V output). |
| Power Supply |
| Power Supply Available with two power supply options: P1 is compatible with 100-240Vac or 100-300Vdc. P2 option is compatible with 20-60Vdc. |
| Input/Output |
| Optional plug-in digital input, digital output, analog input, analog output, and relay output expansion modules. |
| Communications |
| Opt to add Modbus protocol with a built-in RS485 port. |
| Data Logger |
| Option to capture critical data by adding 4MB of onboard data logging. |
| Panel Shop |
| Option for a pre-wired, pre-configured NEMA 4X panel meter. |
Monitor in real-time the energy consumption of EV charging stations and individual EV motors, providing detailed insights with accumulated totals and historical data logs. Compatible with new Class 0.1% accuracy DC shunts, offering a wide range of input options from 50A to 2000A.
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 using a single, compact device.
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.
A variety of optional analog, digital, relay, and alarm output combinations are available with plug-in I/O modules to extend the capabilities of your DC energy meter.
 EV Charging |
|---|
Monitor in real-time the energy consumption of EV charging stations and individual EV motors, providing detailed insights with accumulated totals and historical data logs. Compatible with new Class 0.1% accuracy DC shunts, offering a wide range of input options from 50A to 2000A.
 Key Parameters |
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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 using a single, compact device.
 Modbus-RTU |
|---|
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.
 I/O Modules |
|---|
A variety of optional analog, digital, relay, and alarm output combinations are available via field-swappable, plug-in I/O modules. Quickly connect to extend the capabilities of your DC energy meter.
AcuDC 243 | |
|---|---|
| Application | All DC Monitoring & Metering Applications |
| Metering | Voltage, Current, Power, Energy, Ampere-Hours |
| I/O Modules Available | (See table for more I/O options) |
| Data Logging | Optional 4MB |
| Communication Protocol | Optional RS485 Modbus-RTU |
| Current Sensing Input | Choose from: Direct Input (0-10A), Shunt (50-100mV), Current Hall Effect Sensor (mA), or Voltage Hall Effect Sensor (V) |
| Power Supply | Choose from: P1 (for 100-240Vac or 100-300Vdc) or P2 (20-60Vdc) |
| Power Mount Option | |
AcuDC243 |
|---|
| Application | All DC Monitoring & Metering Applications |
|---|---|
| Metering | Voltage, Current, Power, Energy, Ampere-Hours |
| I/O Modules Available | (See table for more I/O options) |
| Data Logging | Optional 4MB |
| Communication Protocol | Optional RS485 Modbus-RTU |
| Current Sensing Input | Choose from: Direct Input (0-10A), Shunt (50-100mV), Current Hall Effect Sensor (mA), or Voltage Hall Effect Sensor (V) |
| Power Supply | Choose from: P1 (for 100-240Vac or 100-300Vdc) or P2 (20-60Vdc) |
| Power Mount Option | |
 X1 | X2 | X3 | X4 | X5 | |
|---|---|---|---|---|---|
| Digital Input (DI) | 2 | 2 | 2 | 2 | 2 |
| Analog Output (AO) | 2 (4-20mA / 0-20mA) | 2 (0~5V / 1~5V) | |||
| Analog Input (AI) | |||||
| Relay Output (RO) | 2 | ||||
| Digital Output (DO) | 2 | ||||
| Hall Effect Sensor Power Supply | +/- 15Vdc |
X1 |
|---|
| Digital Input (DI) | 2 |
|---|---|
| Analog Output (AO) | 2 (4-20mA/0-20mA) |
X2 |
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| Digital Input (DI) | 2 |
|---|---|
| Analog Output (AO) | 2 (4-20mA/0-20mA) |
X3 |
|---|
| Digital Input (DI) | 2 |
|---|---|
| Relay Output (R) | 2 |
X4 |
|---|
| Digital Input (DI) | 2 |
|---|---|
| Digital Output (DO) | 2 |
X5 |
|---|
| Digital Input (DI) | 2 |
|---|---|
| Hall Effect Sensor Power Supply | +/- 15Vdc |
This plug-and-play USB to Serial RS485 Converter is designed to provide a convenient and reliable connection from AcuDC 240 meters to other devices with a USB port.
Adapter provides the option to mount the AcuDC 240 meter on a DIN rail either at a horizontal or vertical angle. It is easily secured to the meter or AXM modules.
Pre-configured, pre-wired panel solution is ideal for on-site installations need to meet regional regulatory safety and environmental compliance. All panels are quality tested to be reliable and fault-free.
Engineered for high accuracy, DC sensors are industrial grade to provide consistent measurements in a wide range of environments. Choose from split-core DC sensors, Hall Effect sensors, or DC shunts.
The input range for direct voltage measurement is 0-1000V and for current is 0-±10A.
A Hall Effect sensor requires a power supply (±15 Vdc) while a shunt does not. Also, a shunt requires you to break the circuit to install while a Hall Effect sensor does not.
The energy consumption can be found on the E1 screen. This can be found by pressing ‘V/A’ on the meter screen.
The meter supports 2-wire RS485 serial bus. The meter does not support RS422 and RS232. A USB-RS485 converter or RS232-RS485 converter can be used if your computer is equipped with a USB port or RS232 port. The pre-configured USB-RS485 converter stocked by Accuenergy is guaranteed to work with our meters. Some generic RS485-USB converters are not guaranteed to work.
Yes, you can data log directly on your computer using the Acuview software; this can be found in the data log settings or by pressing Ctrl+L. The meter would have to be connected to the computer with the software open for data to be logged.
