title: COSEL Power Supply, Noise Filter 2025 Product Catalog

Summary

COSEL Power Supply, Noise Filter 2025 Product Catalog

AC-DC Power Supplies Confi gurable TypeInstruction Manual3.5 Thermal protection!The unit has the thermal protection.!The thermal protection might activate and shut down the outputunder the following conditions.1 The case that the output current and/or the ambient temperatureexceed the derating curve.2 The case that the fan stops working or the air volume is decreasedby blocking the fan.When the thermal protection activates, outputs on all output moduleswill shut down.However, the Module P, Q and R can shut down individually.When either one of the following actions is taken, the output willrecover.1 Turn the input voltage off and solve all of overheating cause.Then, turn the input on after enough time to cool the unit down.2 Turn all outputs off by GI terminal and solve all of overheatingcause. Then, turn all outputs on by GI terminal after enoughtime to cool the unit down.3.6 Overvoltage protection!When the overvoltage protection activates, outputs on all outputmodules will shut down.When either one of the following actions is taken, the output willrecover.1 Turn the input voltage off and solve all of overvoltage cause.Then, turn the input on after ten seconds.2 Turn all outputs off by GI terminal and solve all of overvoltagecause.Then, turn all outputs on by GI terminal after ten seconds.* The recovery time depends on such factors as input voltage.Module E4 to H4, E to H, S to V, V4, V5 and 2C to 2M have theovervoltage protection to follow up to the output voltage in additionto a standard overvoltage protection. It will activate when theoutput voltage exceeds the setting voltage.!If the external voltage was applied to the output of the power supply,the internal components might be damaged.3.7 Output ripple and ripple noise!The measurement environment would affect the ripple noise.Fig.3.1 is the recommended measurement method.Osiloscope/Ripple noise meterBw:20MHz+Vout-VoutC1150mmC1 : Aluminum electrolytic capacitor 22μF+LoadDifferential probeFig.3.1 Measuring method of Ripple and Ripple NoiseRemarks :The output ripple and noise might not be measured correctly bythe fl ux of magnetic force from the power supply which crossesthe ground wire of the probe.Bad exampleGood exampleFig.3.2 Example of measuring output ripple and noise3.8 Output voltage adjustment by external!To increase an output voltage, turn a built-in potentiometer clockwise.To decrease the output voltage, turn it counterclockwise.!The output voltage of Module E4 to H4, E to H, S to V, V4, V5and 2C to 2M can be adjusted by external.When the VTRM_ENand COM terminals on CN3 are shorted and the power supplystarts up, the VTRM will be enabled. The output voltage can beadjustable from approximately 0V to the upper limit of the outputadjustment range by external voltage applied between VTRM andCOM on CN3. In this case, the output voltage will be based on thecalculation 1. However, even if 3.0V or more (3.5V or more foroutput module V) is applied, the value cannot be set to exceed theupper limit of the output voltage adjustment range.Do not set the external voltage of the terminal to -0.3V or less, and5.0V or more.The voltage betweenVTRM and COM [V]Output voltage [V] = XRated output voltage [V]--- 12.5 [V]* When using a module, use the corresponding rated output voltage(Ex.E4 should use E, H4 should use H,etc.)!When the VTRM is enabled, the potentiometer for the output voltageadjustment will be disabled.!The conversion of VTRM Enable and Disable requires removingand reinstating AC power.!When the output voltage is adjusted by the external, the outputvoltage will drop to approximately 0V if the VTRM terminal got disconnected.!When the output voltage is adjusted to less than the adjustmentvoltage range, the ripple or the ripple noise may be bigger thanthe specs.100kΩVTRM470pF 100kΩCOMAME-16Fig.3.3 VTRM Internal circuit