AS-Interface power supply FEAS GmbH
30,5 V, 2,8 to 4,0 A

Application
The ASi switch-mode power supply is a powerful and robust device to power sensitive loads in a hard industrial environment. These features result from the modern construction with a good radio shielding and high reliability integrated in a functional and stable casing. The short circuit proof output DC voltage is 30.5 V. This power supply is optimally suited for loads requiring
high starting currents.

Functional principle
In the ASi power supply a flyback converter operates to transform the energy in two steps. During the conducting phase the diode is blocking, the inductor is energized and a magnetic field establishes. There is no electrical transmission; the consumer load is supplied with energy from the capacitor.
When the switching transistor opens, the blocking phase begins. The current in the inductor cannot change immediately, discharges through the diode and a negative voltage establishes at the inductor.
Now operating like a power source the inductor reloads the capacitor and supplies the consumer with energy. The energy flows from the inductor into the capacitor and the consumer and through the conducting diode back to the inductor.

Technical data
Input voltage: 85-270 VAC / 120-400 VDC
Output voltage: 30.5 VDC
Output current: up to 4.0 Amp
Power: up to 122.0 Watts
Efficiency: 89%
Operating temperature range: -30°C / +70°C
Mounting: on rails acc. to DIN 46277 or wall mounting with screws