Dyness Stack 280 BDU & Base – Control Unit
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The Dyness Stack 280 BDU & Base is the central control unit of the modular STACK280 high-voltage battery system. The BDU (Battery Disconnect Unit) manages the connection between battery modules and the inverter, providing protection, communication and system balancing. The Base forms the stable foundation on which the battery modules are stacked. The system supports 3 to 15 battery modules in series per cluster, resulting in a system voltage of 134 to 876 V. Up to 12 clusters can be connected in parallel. Communication with the inverter is via CAN or RS485 (RJ45 connector).
- Scalable system: supports 3–15 Stack 280 battery modules in series per cluster, up to 12 clusters in parallel.
- Wide inverter compatibility: CAN/RS485 communication (RJ45) with GoodWe, Solis, Growatt, Deye, SINENG and more.
- Integrated fire protection: built-in aerosol fire extinguisher for maximum safety.
- Robust construction: IP20 protection, forced air cooling, suitable for indoor installation.
- Certified: CE, EMC and UN38.3 certified for professional installation and operation.
Technical notes for installers
The BDU & Base is suitable for indoor use only (IP20). The BDU has dimensions of 770 × 425 × 230 mm and the Base 770 × 425 × 133 mm; the combined weight of BDU & Base is ±56 kg. A full column of 8 modules + BDU reaches a height of approximately 2208 mm; a minimum clearance of 450 mm above the system is required (floor to ceiling ≥ 2658 mm). More than 8 modules must be split across two columns. Grounding resistance must be ≤100 mΩ. Use the supplied CAN resistor (120 Ω) on the appropriate ports in parallel systems. Consult the compatibility list for the correct communication settings per inverter type.
| Parameter | Value |
|---|---|
| BDU dimensions (W × D × H) | 770 × 425 × 230 mm |
| Base dimensions (W × D × H) | 770 × 425 × 133 mm |
| Weight BDU & Base | ±56 kg |
| Protection class | IP20 (indoor use only) |
| Cooling | Forced air cooling |
| Min. battery modules per system | 3 |
| Max. battery modules in series | 15 |
| Max. modules per column (recommended) | 8 |
| Max. parallel clusters | 12 |
| Supported system voltage | 134–876 V |
| Min. clearance above cluster | 450 mm |
| Min. floor-to-ceiling height (8 mod. + BDU) | ≥ 2658 mm |
| Grounding resistance | ≤100 mΩ |
| Operating temperature | –20 °C to +50 °C |
| Optimal ambient temperature | 18–30 °C |
| Communication | CAN / RS485 (RJ45) |
| RJ45 pin assignment | Pin 1=485_B, Pin 2=485_A, Pin 4=CANH, Pin 5=CANL |
| Certifications | CE, EMC, UN38.3 |
| Fire protection | Integrated aerosol fire extinguisher |
What is included in the Dyness Stack 280 BDU & Base package?
The package (Package A) contains the following items:
| Item | Quantity |
|---|---|
| BDU (770 × 425 × 230 mm) | 1 |
| Base (770 × 425 × 133 mm) | 1 |
| Fixing brackets | 2 |
| Expansion bolts M6×80 | 2 |
| Expansion bolts M12×100 | 4 |
| CAN resistor RJ45-CAN-120 (120 Ω) | 1 |
| Flat-head Phillips screws M5×30 | 4 |
| Cable terminals OT4-6 | 2 |
| CAN communication cable (2000 mm, RJ45) | 1 |
| RS485 communication cable (2000 mm, RJ45) | 1 |
| Power cable positive (red, 50 mm², 2050 mm) | 1 |
| Power cable negative (black, 50 mm², 2050 mm) | 1 |
| User manual | 1 |
| Warranty card | 1 |
| Customer letter | 1 |
| Packing list | 1 |
Battery modules (Package B) are not included and are sold separately.
Which inverters are compatible with the Dyness Stack 280 BDU & Base?
The Dyness Stack 280 BDU communicates via CAN or RS485 (RJ45 connector, pin 1 = 485_B, pin 2 = 485_A, pin 4 = CANH, pin 5 = CANL) and is compatible with the following inverters, among others: Solis, Growatt, Sosen, Solinteg, Atess, Magarevo, GoodWe (GDW), Deye, SINENG, SINEXCEL and Megarevo. Consult the full compatibility list for model-specific settings.
What are the installation requirements for the Dyness Stack 280 BDU & Base?
Installation must be carried out by certified electricians in accordance with national standards (e.g. BS 7671, IEC 60364). The system is suitable for indoor use only (IP20). The combined weight of BDU & Base is ±56 kg. A full column of 8 modules + BDU (height ±2208 mm) requires a minimum clearance of 450 mm above the system (floor to ceiling ≥ 2658 mm). More than 8 modules must be split across two columns. Grounding resistance ≤100 mΩ. Use the supplied CAN resistor (120 Ω) on the appropriate ports in parallel systems. If installing on an upper floor, a professional assessment of the floor's load-bearing capacity is required.
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Top product met hoge opslagcapaciteit voor een scherpe prijs !
Super prestatie's voor een scherpe prijs
Commande bien reçu , société, très sérieuse, produits totalement conforme à mes attentes, je suis très satisfait du service client, très rapide en réponse et au niveau de l’envoi du produit, parfait pour une Smartbox Marstek monophasé . Merci à vous. Cordialement.
Prima advies (deze thuisbatterij past prima bij de eerder gekochte Goodwe hybrid omvormer.
Snel tot een order gekomen en ook vlot geleverd.
Een tevreden klant
Very good seller, express delivery, excellent communication and technical consultation, that's how it works