Huawei EMMA-A02 energy management controller DIN module intelligent energy measurement class 1 ±1%
- Huawei EMMA-A02 energy management assistant for controlling PV, ESS, EV chargers and heat pumps; energy measurement accuracy class 1 (±1%), voltage 85-520 Vac.
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Huawei EMMA-A02 - Energy Management Assistant
Huawei EMMA-A02 is an intelligent Energy Management Assistant designed for optimal control of energy flow in modern PV installations, storage systems (ESS), electric vehicle chargers and heat pumps. The device enables dynamic monitoring and management of energy in real time, supporting maximum self-consumption and intelligent pLance of consumption.
- Precise energy measurement - accuracy class 1
- Built-in WLAN module for quick commissioning and configuration
- Support for PV inverters, ESS systems, chargers and heat pumps
- Intelligent optimization pLanization of PV and ESS based on forecasts
- Compatibility with Shelly devices and Huawei SUN2000 inverters
Product Description
EMMA-A02 is a center for smart energy management in residential and commercial installations. The device collects data from inverters, energy storage, heat pumps and EV chargers, analyzing energy flows in real time. Thanks to integration with Huawei's FusionSolar cloud, the user has access to precise statistics, charging schedules and automatic control of equipment according to PV production and energy demand forecasts. Built-in communication interfaces (LAN, WLAN, RS485) allow flexible integration with a wide range of devices.
Security and reliability
The EMMA-A02 is designed with durability and safety in mind. It offers surge protection, galvanic isolation on RS485 interfaces, and rugged IP2X-rated construction to resist dust and basic environmental factors. An operating range of -25°C to +60°C allows installation in a variety of climatic conditions. The device meets the requirements for Class 1 precision measurement systems (±1% accuracy).
Technical data
| General data | |
|---|---|
| Model | EMMA-A02 |
| Dimensions (W × H × D) | 108 × 100 × 65 mm |
| Mounting type | DIN35 rail |
| Minimum cabinet height | ≥ 47.5 mm |
| Weight | 0.5 kg |
| Power supply | |
| AC voltage | 1P2W: 100-240V, 50/60Hz; 3P3W/3P4W: 346-415V, 50/60Hz |
| Typical power consumption | 4 W |
| Communication interfaces | |
| Output power | 9.5-13.2V @ 100 mA, ≤3 m |
| LAN | 10/100 Mbps, ≤100 m |
| WAN | 10/100 Mbps, ≤100 m |
| WLAN | AP + STA, 802.11 b/g/n (2.412-2.484 GHz) |
| RS485 | 2 × ports, 9600/19200/115200 bps, ≤50 m |
| Digital inputs | 2 × ≤20 m |
| Digital outputs | 2 × ≤20 m |
| Measurement range | |
| Current range | Direct ≤63 A, external CT: >63 A |
| Voltage range | 1P: 85-299 Vac; 3P: 148-520 Vac |
| Accuracy of energy measurement | ±1% (accuracy class 1) |
| Device management | |
| PV inverters | Up to 3 |
| EV chargers | Up to 2 |
| Heat pumps | Up to 1 (direct) / more by Shelly |
| Shelly devices | Up to 20 (PLus PLug S, PLus 2PM, Pro 2PM) |
| Operating environment | |
| Operating temperature | -25°C ~ +60°C |
| Storage temperature | -40°C ~ +85°C |
| Relative humidity | 5%-95% (non-condensing) |
| Maximum operating altitude | 4000 m (reduction above 2000 m) |
| Degree of protection | IP2X |
| Compatibility | |
| PV inverters |
SUN2000-2-6KTL-L1 SUN2000-8-10K-LC0 SUN2000-3-10KTL-M1 SUN2000-12-25KTL-M5 SUN2000-12-25K-MB0 |
| Chargers | SCharger-7KS/22KT-S0 |
| Heat pumps | SG-Ready |
| Shelly appliances | Shelly PLus PLug S, PLus 2PM, Pro 2PM |
Technical data source: data sheet of Huawei EMMA-A02 model.link
FAQ
- What is the EMMA-A02 used for? For intelligent energy management of PV, ESS, EV and heat pump systems.
- What devices can be connected? Up to 3 inverters, 2 EV chargers, 1 heat pump and up to 20 Shelly devices.
- Does the EMMA-A02 have Wi-Fi? Yes, built-in WLAN module (AP + STA, 802.11 b/g/n).
- What is the power supply of the device? 100-240 V AC (1-phase) or 346-415 V AC (3-phase).
- What is the measurement accuracy? Class 1, ±1%.
- What communication interfaces are available? LAN, WAN, RS485 (×2), WLAN, digital inputs and outputs.
- What kind of cooling is available? Natural, without fans.
- What are the dimensions? 108 × 100 × 65 mm, weight 0.5 kg.
- What are the operating conditions? -25°C ~ +60°C, up to 4000 meters above sea level.
- Does it support Shelly devices? Yes, up to 20 units of various models (PLus PLug S, 2PM, Pro 2PM).
Summary
Huawei EMMA-A02 is a smart power management assistant that combines measurement, communication and control in one compact device. With support for Wi-Fi, RS485 and integration with pLatforma FusionSolar, the EMMA-A02 is an ideal solution for residential and commercial PV systems with energy storage, EV chargers and heat pumps.