Power supply unit for AS-Interface systems
Special power supply units with an output voltage range of 29.5 V - 31.6 V DC are used to supply the AS-Interface systems. The AS-i system also requires a data decoupling network in the power supply unit in order to be able to transmit communication signals along the power line. The ASI PS 100-240 AC/4.8 EFD power supply unit can supply an AS-i system with up to 4.8 A.
Safety through automatic earth fault detection
If two earth faults occur in an AS-i system, this can cause the machines to inadvertently start up or not to be able to stop operation. The power supply unit has an integrated earth fault detection function. An earth fault is signaled via LED and a signal output.
The wide-range input of the power supply unit can be operated with all conventional AC and DC networks without having to make any settings.. The devices can thus be used worldwide.
Harmonic current wave filter integrated
The EN 61000-3-2 came into force on 1.1.2001. All primary switched power supplies that are directly connected to the public low-voltage network must be accordingly equipped with a harmonic current wave filter.
For this purpose, the power supply unit has a PFC filter (Power Factor Correction). As well as the filter function, this circuit guarantees mains buffering of over 40 ms.
The power supply unit can also be used in a damp environment. The varnished PCB means that the power supply is insensitive to high humidity and condensation in the inside of the device.
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