MOSO U7 LED Power Supply / Driver 40 W, DALI-2 / D4i, programmable
Description
MOSO U7 – programmable 40 W LED driver with DALI-2 / D4i
Constant-current power supply with DALI-2 and D4i control, AstroDim, CLO and NFC programming – IP20 for indoor and outdoor installation.
40 WDALI-2 / D4iIP20up to 88%
Constant-current driver with DALI-2 & D4i
The MOSO U7 is a constant-current, NFC-programmable LED driver with 40 W (model U7-040D057) and a wide input range of 176–305 V. Its 28–57 V output and adjustable current of 0.70–1.05 A (AOC) make it a flexible power supply for many luminaires of protection Class I and II. Its certified DALI-2/D4i interface integrates it fully into modern lighting control systems.
40 W constant current
Wide 28–57 V output, current 0.70–1.05 A (AOC).
DALI-2 & D4i
Two-way communication, D4i-certified for smart control.
AstroDim & CLO
Sensorless night dimming plus Constant Lumen Output against LED ageing.
NFC-programmable
Output current (AOC) set by NFC – even when de-energised.
Efficiency up to 88%
Efficient conversion, PF up to 0.98, THD only 5%.
IP20 & Class I/II
For dry, damp and wet locations, indoor and outdoor.
Control, DALI-2 & programming
- DALI-2 & D4i – Two-way communication to DALI-2, D4i-certified – full integration into DALI lighting controls.
- AstroDim (time/night dimming) – Timing, virtual-midnight and self-adaptive dimming reduce power in low-traffic hours – without an external sensor.
- NFC programming (AOC) – Output current and curves set by NFC – even when de-energised.
- Constant Lumen Output (CLO) – Compensates LED ageing and keeps luminous flux stable across the service life.
- 24 V auxiliary supply – Integrated 24 V/125 mA aux output plus 16 V DALI bus supply.
- Comprehensive protection – Short-circuit (SCP), under-voltage (UVP), over-voltage (OVP) and external NTC over-temperature protection (OTP).
Programming is done via the DALI-2 line or contactless by NFC (MOSO MS-PRG-D1 / MS-PRG-N1, available separately).
Technical data
| Model no. | U7-040D057 |
| Power | 40 W |
| Input voltage | 176–305 V (full range) |
| Output voltage | 28–57 V (full power from 38 V) |
| Output current | 0.70–1.05 A (AOC, default 0.70 A) |
| Efficiency | up to 88% |
| Power factor | PF up to 0.98 |
| THD | 5% |
| Control | DALI-2, D4i-certified |
| Programming | NFC (AOC) and DALI |
| Time control / AstroDim | timing, virtual midnight, self-adaptive |
| Constant Lumen Output | yes (CLO) |
| Auxiliary supply | 24 V / 125 mA; DALI bus 16 V |
| Protections | SCP, UVP, OVP, OTP (external NTC) |
| Over-temperature protection | Tc approx. 90 °C |
| Surge protection | 6 kV (L-L) / 10 kV (L-earth) |
| Interface | Zhaga Book 13 |
| Ingress protection | IP20 (indoor & outdoor; dry/damp/wet) |
| Protection class | I and II |
| Operating temperature | −40 to +55 °C (Ta) |
| Case temperature | Tc up to +85 °C (safety) |
| Lifetime | 100,000 h (Tc up to 75 °C) |
| MTBF | 200,000 h (MIL-HDBK-217F) |
| Dimensions (L × W × H) | 132.5 × 77 × 40 mm |
| Weight | approx. 250 g |
| Certification | CE, ENEC, CB, RoHS |
Protection features in detail
-
SCP – short-circuit protection
If the output is short-circuited – for example by a wiring fault or a defect in the LED module – the driver switches the output off immediately and protects components and luminaire from damage. Protection is self-recovering: after about 30 seconds the driver restarts automatically once the fault is cleared. -
UVP – under-voltage protection
If the mains input voltage falls below a critical level (on the U7 in the region of 130–170 V), the driver shuts down automatically instead of running in an unstable state. This prevents flicker and operation outside the permitted range; when the voltage rises again the driver restarts automatically. -
OVP – over-voltage protection
If the output voltage rises impermissibly – for instance when the LED load is interrupted (open circuit) – the driver blocks or limits the output so that no harmful voltage reaches the luminaire. After it trips, the driver has to be disconnected from the mains once and powered on again. -
OTP – over-temperature protection (external NTC)
Via an external NTC sensor the driver measures the temperature directly at the luminaire or the critical component. If it gets too hot, it reduces the output current in stages (derating) instead of simply switching off – keeping the light on and protecting the LED. Once the system cools down, the driver returns to full power automatically.
Applications
The U7 40 W suits street, industrial and area lighting as well as demanding indoor and outdoor applications. Thanks to DALI-2/D4i integration, NFC programming and AstroDim night dimming it reduces energy consumption and maintenance.
Scope of delivery
- 1 × MOSO LED driver U7 (40 W)
- Wiring / quick guide