BMU801 specifications - AWS810-SOLAR

The specifications described in this section are valid for BMU801 devices with serial number W2440101 onwards. The serial number is printed on a sticker on the back of BMU801.

For specifications of older BMU801 devices (serial number W2440100 and earlier), see revision A of BMU801 User Guide (M212710EN).

BMU801 operating environment
Property	Description/Value
Operating environment	Outdoor use ¹
Use in wet location	Yes ¹
Operating temperature	−40 … +70 °C (−40 …+158 °F) ² ³
Storage temperature	−60 … +85 °C (−76 … +185 °F)
Operating humidity	0–100 %RH, non‑condensing
Pollution degree	2
Maximum operating altitude	3000 m (approx. 9800 ft)
IP rating	IP20: Protected against solid foreign objects of 12.5 mm Ø and greater.

BMU801 inputs and outputs
Property	Description/Value
Compatible battery types	Valve‑regulated lead‑acid (VRLA) battery
Input voltage (all DC inputs)	9–28 V DC ⁴ ⁵
Input voltage (for 12 V VRLA battery charging)	15–28 V DC
Overvoltage category	I
Maximum input current	10 A
Charging voltage (for 12 V VRLA battery charging)	12–15.6 V
Maximum battery charging current	6 A
Nominal output voltage	24 V ⁶
Maximum continuous output (load) current	10 A
Nominal voltage, solar panel	12 V DC
Maximum power, solar panel	100 W
NTC connectors	2 × push-in connector for NTC temperature sensors
Mating connectors
2 × battery, 2 × solar panel, power in/out	Phoenix Contact FKCN 2,5/2‑ST‑5,08
Modbus	M8 4‑pin female
GPIO	Phoenix Contact DFMC 1,5/3‑ST‑3,5‑LR 2 × status output (max. 100 mA / 30 V) 1 × battery voltage output 1 × force-off input

BMU801 compliance
Test	Applied standard	Description/Value
EU directives and regulations	EMC Directive (2014/30/EU) Low Voltage Directive (2014/35/EU) RoHS Directive (2011/65/EU) as amended by 2015/863
EMC immunity	EN 61326‑1, industrial environment
EMC emissions	CISPR 32 / EN 55032, Class B
Electrical safety	IEC/EN/UL/CSA‑C22.2 61010‑1
Compliance marks	CE, RCM, UKCA
Listing marks	MET Recognition (USA and Canada)
Test	Applied standard	Description/Values
Vibration (sinusoidal)	IEC 60068‑2‑6 IEC 60945	5–13.2 Hz, 1 mm (0.04 in) amplitude 13.2–200 Hz, 0.7 g
Shock	IEC 60068‑2‑27	15 g, 11 ms, saw-tooth 30 g, 11 ms, half-sine
Dry heat	IEC 60068‑2‑2	+70 °C (+158 °F)
Damp heat	IEC 60068‑2‑78	+40 °C (+104 °F), 95 %RH
Cold	IEC 60068‑2‑1	−60 °C (−76 °F)

BMU801 mechanical specifications
Property	Description/Value
Dimensions (H × W × D)	120 × 33 × 84 mm (4.72 × 1.30 × 3.31 in)
Weight	0.22 kg (0.49 lb)
Mounting	DIN rail 35 mm (1.4 in)
Materials
Screws, washers	Stainless steel AISI 316
DIN rail locking piece	Stainless steel AISI 630
Frame profile	Aluminum EN AW-6060 T6
End covers	Plastic PC/ABS

¹ Inside a weather-proof enclosure (IP65).

² Recommended operating temperature for batteries may be different. See manufacturer documentation.

³ When the battery or its ambient temperature exceeds the operating temperature limit of the battery, BMU801 stops charging but the capability to supply power to the weather station (or other system) remains.

⁴ The short-term maximum voltage is 30 V DC.

⁵ When using external DC power supply, install an external 10 A or 16 A disconnection device, such as slow-blow fuse, for the DC input.

⁶ The actual output equals the DC input voltage when DC power supply or solar panel is connected. If no DC power or solar power is available, the output equals the battery voltage.