With PRO-M (Power-Reliable-Optimized) Weidmüller offers a family of 24 VDC switch-mode power supplies for deployment in mechanical and systems engineerin. The ten single- and three-phase switch-mode power supplies are enclosed in a compactly designed, robust metal housing. Their space-saving design ensures they can be mounted flush side-by-side onto the mounting rail without an air gap.
Further distinguishing characteristics of the 'PRO-M' family include better than 90% efficiency, overload resistance and high performance reserves at standard temperatures. PRO-M power output can be increased by connecting up to five units in parallel – without a diode module. The power supplies continue to function reliably even if a phase fails; in other words, in two-phase operation. The single-phase versions are available as 3 A, 5 A, 7.5 A, 10 A, 20 A and 40 A versions; three-phase units are available as 5 A, 10 A, 20 A and 40 A versions.
To meet application requirements across the globe the ten different primary switch-mode power supply units are equipped with wide-range inputs of 85…264 VAC (single-phase variant) and 3 x 320…575 VAC / 2 x 360…2 x 575 VAC (three-phase variant) as well as 80…370 VDC (single-phase variant) and 450 VDC…800 VDC (three-phase variant). A green LED indicates the unit is ready for operations. Each device output is designed to be short-circuit-proof. The output voltage of 24 VDC can be set across a range of 22.5…29.5 VDC by means of a potentiometer at the front of the device.
The devices are rated to IP20 and, to save space, can be mounted flush side-by-side on TS 35 mounting rails. No air gap is required for cooling purposes. The high MTBF time (Mean Time Between Failures) is >500 000 hours to IEC 1709 (SN29500). Each unit comes with a temperature range of -25…+70 °C. Approvals such as UL 60950, UL 508, CSA 2.22 No. 107 and GL (EMC1 bridge) mean international borders are no hurdle to their deployment.
The power supplies utilise a screw terminal conductor-connection system for both input and output connections. This facilitates the virtually seamless connection of the following conductor cross-sections: Solid conductors from 0.5-6 mm2, flexible conductors from 0.5-2.5 mm2 and AWG conductors from 26-12/10.
