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1. SWS 600 Instruction Manual BEFORE USING THE POWER SUPPLY UNIT Pay attention to all warnings and cautions before using the unit Incorrect usage could lead to an electrical shock damage to the unit or a fire hazard WARNING and CAUTION Do not modify nor remove cover Do not touch the internal components they may have high voltage or high temperature You may get electrical shock or burned When the unit is operating keep your hands and face away from it you may get injured by an accident This power supply is primarily designed and manufactured to be used and enclosed in other equipment Stick the WARNING label for users on the system equipment and describe the notice in the instruction manual The EMC performance has to be tested on system level with end equipment If necessary additional filtering may be required which very much depends on end applications and installation methods Never operate the unit under over current or shorted conditions for 30 seconds or more and out of input Voltage Range in specification which could result in damage or insulation failure or smoking or burning Confirm connections to input output terminals are correct as indicated in the instruction manual This power supply is capable of providing hazardous energy output 240VA the end equipment manuafacturer must provide protection to service personal against inadvertent contact with output terminals These terminals must not be
2. ground sates for line drop between power supply ter 12 AC input terminal N Neutral line minals and load terminals 13 AC input terminal L Live Line Fuse in line 6 S Remote sensing terminal for output for remote sensing function which compen sates for line drop between power supply ter minals and load terminals NEMIC LAMBDA SWS 600 INSTRUCTION MANUAL 2 Terminal Connection Method Input must be off when making connection remote segue lines shall be twisted or use shielded wire Remote ON OFF control lines shall be twisted or use shielded wire Connect terminal to ground terminal of the equipment The output load line and input line shall be sepa l l Output current of each terminal pin must be less rated and twisted to improve noise sensitivity than 40A SWS600 Panel Side WE Basic connection Local sensing Connect S terminal to terminal and S M Remote sensing required terminal to terminal with short piece Remove the two short pieces between S to Mounted on terminal strip at time of shipment terminals from terminal strip Connect S terminal to terminal of load and S terminal to 66 99 output terminal of load with wires When remote sensing terminal are opened output is shut down E ON OFF control required E PF signal output required Use the circuit shown below Open collecto
3. remote programming resistor is 1 25V kQ Please refer to customer speci fications for output range va S a GA Set at lowest setting 3 13 Peak Output Current For SWS600 5V the relation between peak output current and average output current is defined as be low Ip ILL OA eA Iavg Ip x D Im x 1 D Where Ip Peak output current Im Minimum output current D Duty cycle T T T Peak output current operating time T Period Iavg Average output current Peak output current operation should satisfy the conditions below 1 Duty cycle of the peak output current should be lt 35 and operating time of peak output current is less than 5 seconds 2 Peak output current should not exceed the rated peak current of the specifications with derating of input voltage input voltage derating factor for peak output current is same as that of maximum output current 3 Maximum allowable average output current should be less than maximum output current of specifications with derating of input voltage mounting and ambient temperature Refer to section 5 Mounting direction For example At 85Vac standard mounting and 60 C ambient Peak output current should be less than 108A 120A with 90 of input voltage derating Average output current should be less than 63A 100A with 90 of input voltage 70 of ambient and mounting derating 4 Isolation Withstand Voltage 4 1 Isolation Test Isolati
4. user accessible This power supply has a possibility that hazardous voltage may occur in output terminal depending on failure mode The outputs of these products must be earthed in the end use equipment to maintain SELV If the outputs are not earthed it must be considered hazardous and must not be made user accessible Note CE MARKING CE Marking when applied to a product covered by this handbook indicates compliance with the low voltage directive 73 23 EEC as modified by the CE Marking Directive 93 68 EEC in that it is complies with EN60950 DWG NO CA741 04 01A NEMIC LAMBDA SWS 600 INSTRUCTION MANUAL 1 Front Panel Explanation SWS600 Panel DOGO OGG 1 V ADJ Output voltage adjustment trimmer 7 PC Current balance terminal The output voltage rises when trimmer is for current balancing in parallel operation turned clockwise 8 TOG Ground for CNT and PF signal 2 ON Output Power On indication LED 9 CNT ON OFF control terminal The indicator turns on when the power supply for power supply output on and off control output is in normal operating condition with an external signal 3 Output terminal M4 screw x 3 10 PF Power fail signal output terminal 4 Output terminal M4 screw x 3 As the output voltage drops Power Fail 5 S Remote sensing terminal for output terminal will output High for remote sensing function which compen 11 oF Safety Earth Frame
5. erating according to the Mount ing Directions Recommended standard mounting method is A Method B C and D are also possible Refer to the derating below A Standard B C Mounting D E Inhibit P Inhibit Output Derating Curve Vin 115 265VAC Mounting A B C F Mi A Eo o oo i A Mounting D IER 10 th 20 40 40455 6065 rL mm bes TT eee srs bees ree hn NEMIC LAMBDA SWS 600 INSTRUCTION MANUAL LOAD toa wo a e gt i040 100 100 f 100 f 100 o fo o o o e s s s For Vin 85 115Vac refer to section 3 1 for Input Voltage Derating factor For example At Vin 85 Vac Output current derating Ta C 5V 24 48V 5 2 Mounting Method More than 50mm a Front Side More than 50mm More than Side 30mm Back side G Air flow Top SWS600 Example Mounting C 1 Forced air cooling type power supply This power supply has ventilating holes on the front back and side panels Keep these three areas freely as much as possible 2 The maximum allowable penetration of mounting screw is 6mm 3 Recommended torque for mounting screws M4 screw 1 27 N m 13 0 kgf cm 6 Wiring Method The output load line and input line shall be separated and twisted to improve noise sensi tivity The sensing lines shall be twisted and separated from the output lines Use all lines as th
6. exceeds OCP specifications The output will be NEMIC LAMBDA SWS 600 INSTRUCTION MANUAL automatically recovered when the overload condi tion is cancelled Do not operate overload or dead short conditions for more than 30 seconds which could result in damage or insulation failure 3 5 Over Temperature Protection OTP Over temperature protection function is provided When ambient or internal temperature rises abnor mally OTP will shut down the output After shut down first remove the input and cool it down be fore re input 3 6 Low Output Detection Circuit Low output detection circuit is provided PF signal will turn High level to indicate the abnormal sta tus when the output voltage is below 80 of rated value caused by either the drop or brown out of the input voltage or OCP OVP and OTP function op eration The PF signal is insulated by a photo coupler It uses the open collector method shown as below PF Veg max 30V Ic max 20mA TOG 3 7 Remote Sensing S S terminal This function compensates voltage drop of wiring from output terminals to load terminals Connect S terminal to terminal of load and S ter 66 99 minal to terminal of load with sensing wires The total line voltage drop side line and side line shall be less than 0 3V In case that sensing line is too long it is necessary to put an electrolytic capacitor in following 3 places 1 Across the load ter
7. ible noise can be heard when input voltage waveform is not sinusoidal wave 11 Notes 1 Over voltage Category II 2 Radio Interference Suppression Test is not performed
8. ick and short as possible to make lower impedance Noise can be eliminated by attaching a capaci tor to the load terminals The output current of each output terminal is limited to 40A When it is more than 40A use 2 or 3terminals For safety and EMI considerations connect terminal to the mounting set ground terminal Recommended torque for the terminal pieces Output terminal M4 screw 1 27 N m 13 0 kgf cm Input and signal terminal M3 5 screw 0 74 N m 7 5 kgf cm 7 EMC This power supply is primarily designed and manu factured to be used and enclosed in other equipment The installation wiring grounding and end appli cation of the switching power supply in the equip ment system may influence its EMC characteristics Therefore the EMC performance has to be tested on end system level Additional filtering may be re quired depends on application and installation methods Please refer to following application notes which may help to improve EMC performance The output load line and input line shall be separated and twisted to reduce noise Use all lines as thick and short as possible to make lower impedance Noise can be eliminated by attaching a capacitor to the load terminals and between output terminals to earth frame ground Use of metal enclosure on system design For safety and EMI considerations connect NEMIC LAMBDA SWS 600 INSTRUCTION MANUAL the FG terminal of SWS series t
9. minal 2 Between S terminal and terminal 3 Between S terminal and terminal If remote sensing terminals are opened the output will rise and OVP be triggered 3 8 Remote ON OFF Control Remote ON OFF control is available Using this function output on off is allowed to control without input voltage on off It is controlled by the voltage applied to CNT and TOG This cir cuit is in the secondary output side of the power supply unit Do not connect in the primary input side And this circuit is isolated from the output by a photo coupler Relay Transistor TTL etc CNT RS Control mode is shown below CNT Level Output for TOG Terminal Condition Lower than 0 8V Higher than 4 5V OFF l External External Voltage Level E 12 5 24 5VDC 1 5kQ NEMIC LAMBDA SWS 600 INSTRUCTION MANUAL 3 9 Output Ripple amp Noise Ripple amp noise are measured at 20MHz by using a 12 twisted pair terminated with a 0 luF amp 47uF ca pacitor When Load lines are longer ripple becomes larger In this case electrolytic capacitor film ca pacitor etc might be necessary to use across the load terminal The output ripple cannot be measured accurately if the probe ground lead of oscilloscope is too long 3 10 Parallel Operation Current balancing function is provided Either of Operations mode A or B is possible To attach PC to PC terminal and S to S terminal the curren
10. o earth terminal of equipment system where power supply unit is mounted on 8 External Fuse Rating Refer to the following fuse rating when selecting the external fuses that are to be used on input line Surge current flows when line turns on Use slow blow fuse or time lag fuse Do not use fast blow fuse Fuse rating is specified by in rush current val ue at line turn on Do not select the fuse according to input current rms values under the actual load condition SWS600 15A 9 Fan life expectancy The Fan life has limitation Therefore periodic maintenance by exchanging the life expired fan is required The following figure shows the life of fan Life expectancy years Fan exhaust temperature C Measuring point Air flow aes P S 50mm Measuring point of fan exhaust temperature 10 Before concluding that the unit is at fault Before concluding that the unit is at fault make the following checks Check if the rated input voltage is connected Check if the wiring of input and output is cor rect Check if the wire material is not too thin Check if the output voltage control V ADJ is properly adjusted If use function of the Remote ON OFF control Check if the Remote ON OFF control connec tor is not opened Check if the output current and output wattage does not over specification Audible noise can be heard during Dynamic Load operation Aud
11. on resistance between output and FG chas sis shall be more than 1OOMQ at SOOVDC and between output and control shall be more than 10M9 at LOOVDC For safety operation voltage setting of DC isolation tester must be done before the test Ensure that it is fully discharged after the test Output FG chassis SOOVDC 100M or more Isolation Tester Output Control 1O0VDC 10MQ or more Isolation Tester NEMIC LAMBDA SWS 600 INSTRUCTION MANUAL 4 2 Withstand Voltage This series is designed to withstand 3 0kVAC be tween input and output 2 0kVAC between input and FG chassis 5 00VAC between output and FG chassis and 100VAC between output and control terminal each for minute When testing withstand voltage set current limit of withstand voltage test equipment at 20mA Output FG chassis and Out put Control 100mA The applied voltage must be gradually increased from zero to testing value and then gradually decreased for shut down When timer is used the power supply may be damaged by high impulse voltage at timer switch on and off Connect input and output as follows Input FG chassis solid line 2kVAC Imin 20mA Input Output dotted line 3kVAC Imin 20mA l l Withstand Voltage Tester l l Output FG chassis SOOVAC Imin 100mA Withstand Voltage Tester Output Control 1OOVAC Imin 100mA Withstand Voltage Tester 5 Mounting Directions 5 1 Output D
12. r method shown below shall be used TOG terminal is Ground for CNT TOG terminal is ground for PF terminal Signal ground PF signal output 3 Functions and Precautions 3 1 Input Voltage Range Input voltage range is single phase 85 265VAC 47 63Hz or 120 330VDC Input voltage which is out of specification may cause unit damage For cases where conformance to various safety specs UL CSA EN are required input voltage range will be 100 240VAC 50 60Hz Maximum output power is derated linearly if input voltage is less than 115Vac Output derating vs Input voltage Farn SWS600 24 48 SWS600 5V LOAD ai ie 145 Wa 209 239 269 INPUT VOLTAGE VAC 3 2 Output Voltage Range V ADJ trimmer on the front panel is for output volt age adjustment within the range of specifications To turn the trimmer clockwise the output voltage will be increased Note over voltage protection OVP function may trigger if the output voltage is increased excessively 3 3 Over Voltage Protection OVP The OVP function Inverter shut down method manual reset type is provided When OVP triggers the output will be shut down The input shall be re moved for a few minutes and then re input for re covery of the output OVP setting is fixed and not to be adjusted externally 3 4 Over Current Protection OCP Constant current limiting automatic recovery OCP function operates when the output current
13. t balancing function activates and output current of each power supply is equivalently supplied to load Wires to PC terminals shall be as short as possible and same length A To Increase the Output Current 1 Adjust the output voltage of each power supply to be same value within 1 or 100mV whichever smaller 2 Use same length and type of wires for all load lines 3 Please use with output current less than 80 of rated output current for all paral leled power supply units 4 Parallel operation possible until 5 units All paralleled units shall be same type of power supply Power Supply B To Use as a Backup Power Supply 1 Adjust the output voltage of each power supply to be same value 2 Set power supply output voltage higher by the forward voltage drop of diode 3 Use within the specifications for output voltage and output current Output Power W Vo Vf x Io Load 3 11 Series Operation For series operation either method A or B is possible Method A Power Supply Output Terminal AOE Load Output Terminal ZOOS Method B Power T DA D Output i Load Terminal ae Output Terminal ie B z fond Es NEMIC LAMBDA SWS 600 INSTRUCTION MANUAL 3 12 Remote Programming Connecting a remote programming resistor such as a potentiometer between S and terminal remote programming becomes possible to use The rate of the change due to the

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