title: COSEL Power Supply, Noise Filter 2025 Product Catalog

Summary

COSEL Power Supply, Noise Filter 2025 Product Catalog

AC-DC Power Supplies Medical TypeInstruction Manual1 Connection for Standard Use3 Functions■To use UMPS series, connection shown in Fig.1.1.Input1AC(L)2AC(N)4?Vout3?VoutFig.1.1 Connection for standard useLoad2 Wiring Input/Output Pin■The UMPS series basically does not require an output capacitor,but the ripple voltage can be reduced by connecting an outputcapacitor.4－Vout3＋VoutCoLoadFig.2.1 Connecting example of an external capacitor to the output side■If output current decreases rapidly, output voltage rises transientlyand the overvoltage protection circuit may operate.In this case,please Install an external capacitor Co between +Vout and -Voutpins for stable operation of the power supply.■Connectable external capacitor on the output side is shown inTable 2.1.Table 2.1 Connectable external capacitor on the output sideNo.Output voltageUMPS30F/UMPS60F15V0 - 6,800μF212V0 - 4,700μF324V0 - 1,000μF448V0 - 470μF■When connect the output to FG of an equipment, a noise may becomebig. The noise can be reduced by connecting external filterand grounding capacitor on tha input side.L1C11C12AC(L)AC(N)-Vout+VoutC13Load3.1 Input Voltage Range■The range is from 85VAC to 264VACIn cases that conform with safety standard, input voltage range is100VAC to 240VAC (50/60Hz).■Power factor correction is not built-in.■If the input voltage is outside the rated range, the power supply mymalfunction. Operate in accordance within in the specifications.■If the input voltage changes suddenly, the output voltage may gooutside the specifications. Consult us for more details.3.2 Inrush Current Limiting■Inrush current protection is built-in.■If you need to use a switch on the input side, select one that canwithstand an input inrush current.■Thermistor is used in the inrush current limiting circuit. Whenyou turn the power supply on and off repeatedly, have enoughintervals for the power supply to cool down before being turnedon again.3.3 Overcurrent Protection■Overcurrent protection is built-in. It works at more than 105% ofthe rated output current. The power supply recovers automaticallywhen the overcurrent condition is removed. Do not use thepower supply under a short-circuit or overcurrent condition.■Hiccup Operation ModeWhen overcurrent protection works and the output voltage drops,the output voltage goes into Hiccup mode so that the averageoutput current can decrease.3.4 Overvoltage Protection■An overvoltage protection circuit is built-in. If the overvoltageprotection circuit is activated, shut down the input voltage, waitmore than 3 minutes and turn on the AC input again to recoverthe output voltage. Recovery time varies depending on such factorsas input voltage value at the time of the operation.Remarks : Please avoid applying a voltage exceeding the ratedvoltage to an output terminal. Doing so may cause a powersupply to malfunction or fail. If you cannot avoid doing so, forexample, if you need to operate a motor, etc., please install anexternal diode on the output terminal to protect the unit.3.5 Output Ripple NoiseFig.2.2 Recomemended circuit of connect output to FG■Output ripple noise may be influenced by the measuring environment.The measuring method shown in Fig. 3.1 is recommended.UMPS-9May 09, 2025