DIN-rail power supplies deliver peace of mind with seven year warranty

The latest RECOM REDIN45 and REDIN60 DIN-rail power supplies, available now from Dengrove Electronic Components, have a seven year warranty that gives equipment vendors and end users extra peace of mind over an extended service lifetime.

The power supplies are built with high reliability components, and have a design lifetime of ten years (at 40°C ambient temperature). 100% full load burn-in test means every unit supplied is ready to deliver sustained and trouble-free service.

The 45W REDIN45 and 60W REDIN60 power supplies are available with either 12V or 24V fixed output voltage. They feature a universal AC input that allows direct connection to line voltage anywhere in the world. In addition, the novel option of end or side mounting allows equipment the designers to mount the 41.1mm x 101.4mm modules conventionally, on-end, to occupy the least possible space on the rail. The extra flexibility of the alternative side mounting option makes these power supplies a strong choice for use in cabinets where achieving a low profile is the priority.

The units have fast start-up time of 1,000ms, cold start inrush current is limited to 60A, ±1% typical line/load voltage regulation and ±5% dynamic regulation. Moreover, by achieving typical efficiency as high as 87% for 24V models, no-load power of 500mW and leakage current below 1mA, REDIN45 and REDIN60 power supplies can satisfy even the most energy conscious designers.

The units come with approvals including CE marking as well as UL-508 and UL/ IEC-60950-1 general safety certifications. Safety features include 3.75kVAC/1-minute input-to-output isolation voltage, 100MO insulation resistance, over voltage, over current, short circuit and over temperature protection, and an LED DC-OK indicator. They also satisfy the EN 61000 EMC specifications, as well as EN 55011/22/24 and FCC Class B for EMI.

Redundancy simplified

The industry standard DIN-rail mounting system helps accelerate equipment design and streamlines installation. Among numerous other advantages are modularity, high density and the flexibility to configure or re-organise modules on the rail to simplify assembly and minimise wiring.

On today’s highly pressured production lines, maximising equipment up-time is an absolute must. If minor maintenance such as the replacement of a module is required, or unwanted events such as the failure of an AC power supply phase occur externally to the equipment, these can prevent a threat to productivity. Equipment designers may implement redundancy to help keep production flowing.

Building redundancy into the power system to ensure zero equipment down-time is easier with the REDIN45 or REDIN60. All units have a DC-OK relay that simplifies connection of up to three individual power supplies in parallel. The DC-OK LED provides a visual indication when a fault has occurred. There is also an externally accessible trim adjuster, which allows fine tuning of the output voltages of the paralleled power supplies to within ±100mV to permit connection to a common load. The design of the power supply housing allows modules to be mounted in adjacent locations on the DIN rail without requiring spacers, which simplifies assembly and helps maximise utilisation of the rail.

Dual redundancy, using two power supplies connected in parallel operating at 50% load, protects against failure or unexpected disconnection of one unit. The remaining power supply can operate at full load until the second supply is replaced or reconnected. Connecting three power supplies in parallel to protect against the failure of any single AC supply phase is equally straightforward, taking advantage of the DC-OK relay integrated in each unit. 

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