Cover story
The Puls FIEPOS product family The FIEPOS product family (Figure 2) has two versions: The Basic series with one DC output, which offers an optional integrated decoupling MOSFET for developing redundant power supply systems, and the eFused series with up to four current-limited DC outputs. The FEIPOS products simplify the delivery of selective current distribution, protection and monitoring directly in the fi eld, with no need for any further accessories or costly, bulky enclosures. FIEPOS power supplies are
manufactured using a combination of modular boards, futureproofi ng them by allowing new functions to be added by simply integrating alternative boards as required. The eFused range offers an alternative
to power sources that are protected either by means of an external electronic four-channel protection module, four external fuses or circuit breakers. To deliver selective current distribution, the eFused versions can integrate up to four electronic fuses allowing them to simultaneously supply electromechanical loads (e.g., motors) and sensitive loads such as controls or sensors from a single decentralised and fused power supply. If there’s a short-circuit, the power
supply selectively shuts down only the faulty output and reports this via the IO-Link or Output-OK signal and the LED interface on the front of the device. Due to active current limitation, all other outputs continue to be supplied with the proper voltage. This is particularly important in the case of sensitive and safety-critical loads such as PLCs or sensors.
Protected load branches Requirements can vary greatly from one application to another. For this reason, Puls has developed various circuit designs for the most common applications, and there are several possible confi gurations:
1. Two outputs - four load branches This confi guration allows up to four separate load branches with two
Figure 2: FIEPOS switch-mode power supplies can be attached directly to the machine and replace complex, decentralized control cabinets
The eFused range
off ers an alternative to power sources that are protected either by means of
an external electronic four-channel
protection module, four external fuses or circuit breakers
outputs each. For this requirement Puls offers three eFused models with an output power of either 300W or 500W. With these models, two separate electric circuits per output can be achieved, allowing sensors and actuators to be independent of each other. If one sensor load branch fails due to a fault, the other three continue to be supplied with power; see Figure 4. The fault is indicated via IO-Link and the status LED on the front of the device. The communications and LED status allows maintenance to be performed quickly and efficiently. The tripped channel is reset using the pushbutton on the front of the device or, alternatively, via IO-Link.
www.electronicsworld.co.uk July/August 2023 07
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