title: COSEL Power Supply, Noise Filter 2025 Product Catalog

Summary

COSEL Power Supply, Noise Filter 2025 Product Catalog

AC-DC Power Supplies Enclosed TypeInstruction Manual2.9 Remote sensing!These models have a built-in remote sensing function.When remote sensing is not used, +S and -S can be left open.!Please see Fig. 2.4 if you use the remote sensing function.!When you use the remote sensing function, please wire from +Sand -S on CN1 or CN2. Harnesses are available for your purchase.For details, refer to the item of option parts.!When you use the remote sensing, please note the followings.1Wire carefully. When a connection of a load line becomes loose(due to such factors as loose screw), the load current fl ows tothe sensing line and internal circuits of the power supply may bedamaged.2Use a suffi ciently thick wire to connect between the power supplyand the load and keep the line drop at 0.3V or below.3Use a twisted pair wire or a shielded wire as the sensing line.4Do not draw the output current from +S or -S.5When the remote sensing function is used, the output voltageof the power supply may show an oscillating waveform or theoutput voltage may dramatically fl uctuate because of an impedanceof wiring and load conditions.Please check and evaluate carefully before using the remotesensing function.If the output voltage becomes unstable, we suggest you to trythe followings.-Connect C1, C2, C3, R1 and R2.6 When connected to a pulse load, the internal protection activatesdepending on the frequency.If the protection activates, we suggest you to try the followings.-connect C1,C2,C3,R1 and R2.7If oscillation occurs because the sensing line is long, adjust withR1.Please contact us for details.8When power supplies are connected in parallel, the remotesensing function cannot be used.CN1or CN2+V-V+S-SC3C2Wire as close as possible+ + +R2 C1R1LoadFig. 2.4 When using remote sensing function2.10 Signal Output (LED / Alarm)!Functions of LED indicators and Output of Alarm are shown below.LED indicators and Output of Alarm are signals to check the presence/absenceof voltage at the output terminal of a power supplyand to detect fault conditions.The timing of signals might vary depending on input and loadconditions. Please evaluate thoroughly.Table 2.4 LED indicator and Condition of Power supplyLED indicatorBlue OrangeCondition of Power supplyOutputOFFOFFONOFFNormal conditionONOFFONFault conditionOFFPGTable 2.5 Explanation of alarmAlarmOutput of AlarmThe PG signals is“Low”whenthe power supply operates correctly.The signal turns to“High”when the power supply stops.0.1mFOpen collector methodGood : Low(0.5V max at 5mA)Bad: High50V 5mA max100kWFig.2.5 Internal circuit of PGPGPGG!Please note the followings when you use the alarms (PG signal).1 The PG signal turns to“High”when the output voltage is turnedoff with remote ON/OFF.2 When the output voltage drops to 40% or less of the rated outputvoltage, the PG signal is“High”.!Circuit of the alarm is isolated from input, output, FG, AUX andvarious function terminals.2.11 Communication function!The power supply provides an“Extended UART”(INFO terminal)digital interface that enables the user to confi gure many aspectsof the device operation as well as monitor the input and output parameters.For details, please refer to the PCA Series Extended UART Manual.!Extended UART is a communication protocol that enables singlewire,bidirectional, isolated, and multiple communication of UART,which is a general-purpose communication standard.!Communication function terminal is isolated from input, output,FG, AUX and various function terminals.PCA-25