Triple output 200W AC-DC supply targets robotic controllers

March 27, 2019 //By Nick Flaherty
Triple output 200W AC-DC supply targets robotic controllers
Cosel Europe has launched a 200W, open-frame, configurable AC-DC power supply with three isolated outputs tailored for robotic controllers and factory automation.

The Cosel RB series has a unique architectre where the three configurable isolated outputs have different convesion technologies, with one having a reinforced isolation to power Intelligent Gate Bipolar Transistors (IGBT) or equivalent applications. To optimise efficiency, the master output DC-DC converter is based on an LLC resonant topology when the second and third outputs are using Quasi-Resonant-Flyback topology, allowing an overall efficency up to 91 per cent.

The RBC200F accepts input voltages of 84 to 264VAC and delivers an output power of 207W and is designed for convection cooling, operating from -20 to +70ºC at an altitude up to 3,000 meters, 9,000 meters in the case of storage. The RBC200F can be installed in any orientation and under standard mounting (horizontal orientation) derating starts from 50°C under convection cooling.

The master output (Slot 1) can deliver 24V adjustable 22.8 to 26.4V, or 48V adjustable 45.6 to 52.8V with 144W output power. The second output (Slot 2) can host configured modules of 3.3V/5A ; 5V/5A ; 12V/2.5A ; 16.5V/1.9A ; 24V/1.3A ; 48V/0.65A ; +/- 12V/0.7A and +/-15V/0.7A with a power of 16.5 to 30W depending on the output voltage. The third output (Slot 3) can host any of the single output voltage modules in the same power level. For higher voltages, outputs can be connected in series. All output voltages are adjustable via a built-in potentiometer.

The RBC200F as an input to output isolation of 3,000VAC, and an input to ground isolation of 2,000VAC with the isolation voltage between the three outputs has been optimized for robotic controllers applications. Isolation between the master output and output two corresponds to a functional isolation of 500VAC when the isolation between the master output, output two and the third output is reinforced to 3,000VAC.

Certified to IEC/EN62477-1 OVC III and complying with EN61558-2-16, the RBC200F can be directly connected to the installation distribution panel, eliminating the need for an additional isolation transformer. This simplifies the


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