12/24V 20A High Performance DC-UPS
Contents
1. 4 5 Battery sense connection Used to accurately sense the battery voltage by considering the cables voltage drop lt is recommended to use this input when the battery internal resistance measurement is needed see 4 7 Input connection 2 poles are provided for input connection This must be connected to a power supply rated 12 28VDC with a maximum rated current of 20A see 4 2 Output connection 2 poles are provided for output connection It must be connected to the load to be backed up with a maximum rated current of 20A see 4 2 9 Battery connection 2 poles are provided for battery connection This must be connected to the battery Although the unit is protected please respect the correct polarity see 4 3 10 Display Input area provides information regarding the unit s input see S5 1 11 Display Output area provides information regarding the unit s output see S5 1 12 Display Battery area provides information regarding the battery see S5 1 13 Control keys 4 push buttons are provided to navigate through the menus and to select the various functions DCU20 User Manual rev 16 Page 5 29 PCA TIT SWITZERLAN www nextys Dr 2 Features and benefits The main features are P Integrated battery charger for multi chemistry batteries with charging current up to 5A Automatic sensing of input voltage load current and battery current Protections against battery re2. Default Disabled gt Enabled Choices Enabled Disabled PC shut delay PC shut time 5 2 22 PC shutdown delay ime hh mm ss PC shut enable Delay between start of backup and PC shutdown command sent by SEETEEEDET POWERMASTER see 3 3 for details Default Os Range Os 60min Resolution 1s 5 2 23 PC shutdown time enable delay Delay between start of PC shutdown and output power OFF see 3 3 for details PC shut time Default Os Range Os 10min pe pest Gv T Resolution 1s PC off det I 5 2 24 PC restart minimum OFF time PC shut delaw PC shut time Minimum OFF time for PC restart see 3 3 for details When set to O the PC restart HEAS function is disabled Default Os Range Os 60s Resolution 1s 5 2 25 PC OFF detection current threshold PC shut time Off T Current threshold for PC OFF detection see 3 3 for details When set to O the PC EGEE restart function is disabled Default 0A PC off det T Range 0A 20A Relay 1 ready Resolution 0 1A 5 2 26 PC OFF detection timer PC pest off T PC off det I Timer user for PC OFF detection see 3 3 for details PC off det T Default 1s gt Gm 125 Range 1s 60s Relay 1 ready Resolution 1s Relay 2 backup 5 2 27 Relay 1 Ready Date dd mm vyyy ime hh mm s5 Used to configure the behavior of the Relay 1 contact Click OK and then follow the EEHEEHE instruction on the screen to define the polarity and event associ
3. START OOLS Threshold current triggering the alarm Description o Description The measured output current exceeds the alarm threshold The alarm threshold is set to 22A Name O J Shotname Value ALARM OUTPUT OVERLOAD END OOLE The maximum output current reached during the alarm Description The measured output current returns below the alarm threshold Name X JjShotname Value ALARM BATTERY UNDERVOLT START BUVS Threshold voltage triggering the alarm Description The measured battery voltage is lower than the alarm threshold The threshold is 80 of the battery discharge voltage Name J Shortname Value ALARM BATTERY UNDERVOLT END BUVE The minimum battery voltage reached during the alarm Description The measured output current returns above the alarm threshold Name Shortname Value ALARM BATTERY OVERVOLT START BOVS Threshold voltage triggering the alarm Description The measured battery voltage exceeds the alarm threshold The threshold is the battery charge voltage 85 2 5 10 Name Shortname Value ALARM BATTERY OVERVOLT END BOVE The maximum battery voltage reached during the alarm Description The measured battery voltage returns below the alarm threshold Name JShortname Value ALARM BATTERY OVERTEMP START BOTS Threshold temperature triggering the alarm Description The measured battery temperature exceeds the a
4. W 11 9U I 8 1H Uz14 4U I 8 3A T225 4C Date dd mm yyy ime hh mm ss Input nom volt RI OW Batt nom volt Batt cn valt Batt inst date Batt op time FW version 16h398m26s 177 1272912 Charging System Wizard Do you want to continue with he wizard Page 16 29 PCA TIT SWITZERLAN www nextys Dr MENU KEY Scrolls between menus DOWN KEY Scrolls down menus and values UP KEY Scrolls up menus and values OK KEY Confirms selection Table 4 User interface keys The GUI is composed of 5 main menus which are selectable using the MENU KEY as shown on Table 3 The description of each menu is given below 5 1 Status The status screen shows the measurement and statuses to ease the system diagnostic The screen is divided in three main sections identified by the symbols shown below Input The measured input voltage and current is shown in this section In case of problems with the input the background color of the symbol changes from green to red A message with the cause appears Output The measured output voltage and current is shown in this section In case of problems with the output the background color of the symbol changes from green to red and a message with the cause appears Battery The battery voltage current temperature resistance and charge are shown in this section In case of problems with the battery the background color of the symbol changes from
5. green to red and a message with the cause appears During charging and discharging the symbol background color changes to orange and the number of bars drawn inside reflects the charge status During discharging and charging an arrow drawn beside the symbol reflects the direction of the current flowing through the battery pointing towards the battery during charging Table 5 Status screen symbols Furthermore in case of problem a full screen alarm message appears on the screen after 1min of inactivity no key pressed The message can be removed pressing the Saree MENU KEY ME 5 2 Settings The setting menu contains all the configurable parameters available to the user Use the UP DOWN KEY to navigate through the menu items Press the OK KEY to enter and exit the editing mode while in editing mode use the UP DOWN KEY to change the selected value DCU20 User Manual rev 16 Page 17 29 PCA TIT SWITZERLAN www nextys Dr 5 2 1 Input nominal voltage Relay i ready i Relay 2 backup Used to set the nominal input voltage on the input connector Used to generate the iEmmTSETTNIETOES input under voltage and over voltage alarm See 6 for more details 24 8V Default 24V Batt chemistry Range 11V 28V Batt nom volt Resolution 0 1V 5 2 2 Battery chemistry Relay 2 backup l l l Input nom wolt Used to set the chemistry of the battery The system support Lead Acid Nickel and EETEHNEREPTZEEEEIE Lith
6. indemnity and hold 7Y2 and its officers employees subsidiaries affiliates and distributors harmless against all claims costs damages and expenses and reasonable attorney fees arising out of directly or indirectly any claim of personal injury or death associated with such unintended or unauthorized use even if such claim alleges that NEX77Z was negligent regarding the design or manufacture of the part The Customer should ensure that it has the most up to date version of the document by contacting its local NEXTYE office This document supersedes any earlier documentation relating to the products referred to herein The information contained in this document is current at the date of publication It may subsequently be updated revised or withdrawn All Trade Marks recognized Specifications and information herein are Subject to change without notice DCU20 User Manual rev 16 Page 2 29 VALIS SWITZERLAND www nextys com TABLE OF CONTENTS E e eo e EE AE E E E A E A E OO E A O T T 5 2 Features ana Roc AI ceiien mmm 6 FEISS SC OI REOR 7 3 1 Remote monitoring and controlling eeeeeessseesseeeeeeeeee nennen nnne nnnm nnne 7 o U Tc 7 Selig CMA MMOL RET mm mmm 7 3 129 DEVSOBUGLOBDUDUIS eer UR DIUSUFONDI TUFIPIXSPDHI NP UR DURUM RD UIDI ri PRIN IS E 7 51228 CD 8 99 PC shutdown and automatic TeSE
7. resistance see 3 5 AN Caution please respect the polarity of the battery sense connection DCU20 User Manual rev 16 Page 15 29 VALTE SWITZERLAND www nextys com 5 User interface Power ON screen This screen is shown at power ON It shows the device name serial number and firmware version DCLUB DEMO 1z3456r amp 8 ubl z Self tezt k Status This is the default view where the user can find the most relevant information about the device status The system always falls back to this view after 60s of inactivity no key pressed Settings All the device settings are configurable from this menu Use the UP DOWN KEY to navigate through the parameters Press the OK KEY to enter exit the editing mode In editing mode use the UP DOWN KEY to change the highlighted value Info Device information such as firmware version serial number and device name is visible from this menu Logs All the alarms and event are logged in a circular buffer and visible from this screen Use the UP DOWN KEY to navigate through the logs Wizard The wizard helps the user to configure the system through a series of screens Table 3 User interface layout DCU20 User Manual rev 16 gt STATUS SETTINGS INFO LOGS WIZARD STATUS gt SETTINGS INFO LOGS WIZARD STATUS SETTINGS gt INFO LOGS WIZARD STATUS SETTINGS INFO WIZARD STATUS SETTINGS INFO LOGS gt WIZARD W 11 9U I 6A
8. rev 16 Page 27 29 VALIS SWITZERLAND www nextys com 7 Technical Specifications INPUT SECTION TNPUTSECTION SOt CSesee Rated input voltage 11VDC 28VDC Operating range 10 29VDC Rated input current No load power consumption BATTERY SECTION 12V or 24V AAE AE VOIE Other voltages possible by request Lead Acid Battery chemistries Ni MH Ni Cd Li ION LiFePO Maximum battery charge current Allowed battery capacity up to 150Ah Maximum battery current 20A up to 35A for 5 seconds BATTERY HEALTH MONITOR 1mQ 300mQ using Kelvin connection Coulomb counter Battery temperature through optional 10kO NTC sensor Battery operating time since installation Number of cycles Additional monitoring functions USER INTERFACE 1 5 inch color graphic LCD 4 keys Used to program the unit and to access various menus Red LED ON generic failure on the system details on the LCD blinking battery backup function active 2 dry contacts relays rated 30V 2A User settable between different functions see 83 1 3 USB interface Mini USB connector used to interface the unit with a PC Power loss at full load on power supply lt A o O Power loss at full load on battery lt 18W Battery charger efficiency Battery charger power loss Maximum backup time Operating ambient temperature Storage ambient temperature ep m m S r solation against enclosure Protection degr
9. reverts to normal operation To cold start the DCU20 Press and HOLD simultaneously the menu button and OK button until you see the welcome message on the screen On the status screen the input voltage status is indicated as COLDSTART P RELEASE the buttons DCU20 User Manual rev 16 Page 13 29 PCA TIT SWITZERLAN www nextys Dr 4 Installation AN Warning In order to avoid potentially hazardous situations including fire hazard safety recommendations must be followed Only authorized staff can install the unit 4 1 Connecting the input to the power supply The DCU20 must be connected to a DC power supply rated between 12VDC and 28VDC with a maximum output current of 20A Use only 60 75 Class copper 1 5 2 5mm wires stripped 6 5mm The tightening torque must be 0 5 0 6Nm Please respect the wiring polarity Note The input current is equal to the load current plus the current needed by the battery charger to recharge the battery A Caution This input is designed to be connected ONLY to a short circuit protected power supply connecting a battery to this input or other DC sources with not defined current limitation may seriously damage the unit or the load and even result in fire hazard 4 2 Connecting the load The DCU20 must be connected to a DC load rated between 12VDC and 28VDC maximum 20A Use only 60 75 Class copper 1 5 2 5mm wires stripped 6 7 5mm The tightening torque must be 0 5 0
10. time Inhibit polarity Used to set the LCD screen contrast SEEN EHRERHSE Default 24 24 Range 0 40 Screen backlight Screen timeout Resolution 1 5 2 16 Screen backlight Inhibit polarity contrast Used to set the LCD screen backlight Screen backlight Default 2 Range 1 10 fusa state Resolution 1 5 2 17 Screen timeout contrast l l l l Screen backlight To save the LCD backlight the system dims the LCD after the defined timeout value EHHETTIESETEETIE Default 5min Range 1min 30min Disabled Buzzer state Resolution 1min Date dd mm yy yy 5 2 18 Buzzer state Screen backlight l l l Screen timeout Used to enable or disable the internal acoustic alarm buzzer Buzzer state Default Enabled gt Enabled Choices Enabled Disabled Date dd mm yy yy ime hh mm ss 5 2 19 Date Screen timeout Buzzer state Used to show and set the current RTC Real Time Clock date The RIC is used to SEEEIEEIETZZEETEI time stamp the event logs gt 64 06 2814 ime hh mm ss Relay 1 readw 5 2 20 Time Buzzer state l l l Date dd mm yyyy Used to show and set the current RIC time The RTC is used to time stamp the EDULE event logs gt 13 42 03 Relay 1 ready Relay 2 backup DCU20 User Manual rev 16 Page 20 29 PCA TIT SWITZERLAN www nextys Dr 5 2 21 PC shutdown enable Date dd mm yyyy l l l ime hh mm ss Enables the PC shutdown function as explained in 3 3 PC shut enable
11. 6Nm Please respect the wiring polarity Please check the load and the power supply are rating compliant 4 3 Connecting the battery The DCU20 must be connected to a battery with nominal voltage between 12VDC and 28VDC with up to 150Ah capacity Higher capacity batteries can also be used at the expense of a longer charging time Use only 60 75 Class copper 1 5 2 5mm wires stripped 6 7 5mm The tightening torque must be 0 5 0 6Nm AN Caution The battery shall be connected to the DCU20 through a 30A ATO fuse or equivalent Even is the unit is electronically protected against short circuit it is mandatory to use a fuse for safety reasons Please respect the wiring polarity Avoid keeping the DCU20 connected to the battery for long time when not used Although the current consumption from the battery when the unit is OFF is very low about 30A it can discharge the battery in the long time 4 4 Connecting the temperature sensor An optional temperature sensor P N WNTC 2MT can be connected to its input on the front panel The temperature sensor is provided with 2m long cables and must be fixed to the battery body to measure its temperature an adhesive pad can be used When the sensor is connected the battery temperature is automatically displayed on the LCD and a temperature compensated charge is activated when charging Lead Acid batteries DCU20 User Manual rev 16 Page 14 29 PCA TIT SWITZERLAN www nextys Dr 4 5 C
12. HIBIT W O INHIBIT D INHIBIT QW D Hier D BATTERY SENSE JOm D BATTERY SENSE Fuse 5x20 D BATTERY SENSE QC D BATTERY SENSE 4A Fast IN TL IN IN IN OUT OUTPUT OUT OUTPUT OUT OUTPUT OUT BATTERY BATTERY BATTERY BATTERY Figure 3 Internal relay Figure 4 External relay The diagram below shows the DCU20 behavior when Shutdown and automatic restart is enabled Input voltage ED Output voltage Output current e loff PC OFF signal me TH T2 TTT Figure 5 Shutdown and restart chart Parameter Name Description Power failure on the line happens System enters backup mode E2 Automatic PC The POWERMASTER sends a shutdown command to the PC shutdown Optionally a task is called before shutdown shutdown OS crash DCU20 detect the PC being OFF because the output current was lower than loff current threshold for T4 time As a consequence DCU20 generates an ON gt OFF gt ON cycle on its output DCU20 User Manual rev 16 Page 9 29 VALIS SWITZERLAND www nextys com C shutdown delay User settable 5 2 22 Time between start of backup and start of PC shutdown procedure T2 PC shutdown time User settable 5 2 23 Time between start of shutdown procedure and output voltage OFF This time must be set longer T4 than the maximum time the PC takes to complete the shutdown to restart the PC The valu
13. IaEL unsiu ciment despecta dunes buds PRG OEuS ERE bees os deberi v be C Ios vt EREMO Durs ib qu du edi qd 8 24 E i i health MoONlO RR UU t 10 3 5 Battery resistance MEASUEMENMN c ccccccccsssceccseeeecceessceceeeseecseueeecsaueeecsaseeeseuseeessageeessaueeessegseessseeeeeess 11 36 ciuis Reti UU UU m 11 37 AJOUIOMIO COUNMMUCH MR 12 OLA SAU MO u 13 2 ZEE Installation 2 0 cece ccccccescecenseeceeeecaueeecaaeecsuueecsaeeesaueeecausessaaeeesaueessaeeeseueessaaeessaueeesaeeessueeesageeesaueessuseessuseessuseees 14 4 1 Connecting the input to the power supply sseesesssssssseeeeeenenn nennen nennen nnn nnne nnn nnn 14 I AMECOUU eieBude oMM 14 43 Gonnecting the BAErY m TE 14 4 4 Connecting the temperature sensor cccscccccccccsessececcceeeeeeeceeeseeeeesaeeseeeeessaaeeeessaaaeceesssaaseeeesssageeeeseaas 14 4 5 Connecting the INHIBIT input ccccccsssseeecceeesseeeccesessceecseeaaeceecceeaseeeecsseaseeesseaueeeeessaaseeeessaagseeessaas 15 Ao PIA eoe eee eee eee m c 15 suicidio aratenieaiondicharinmedeniamestawianedtininnaceunsuenneslis 15 SEES 21 gg g Hz 0 RE oo 16 SE o E Oea MP 17 CUNO e E E E E N 17 521 MOOT MOMMA volage T 18 522 Battery ACI
14. Manual rev 16 ime hh mm ss Relay 1 ready Relay 2 backup Configure Input nom volt Batt chemistry inst date op time gt Serial Mame inst date op time date inst gt 19 12 7812 Batt op time Fw version Page 22 29 PCA TIT SWITZERLAN www nextys der 5 3 Battery operating time Op time l l Batt inst date Shows the current battery operating time The value is calculated from the date EEESSNEETEN entered in the battery installation date field Once the operating time exceeds the defined battery lifetime see 5 2 12 an alarm is generated see 6 5 4 Logs Every event is logged in the device FLASH memory From the log menu the user can view their history Use the UP DOWN KEYS to navigate between logs For each event the following information is given Timestamp The time and date at which the event happened Event name The name identifying the event see 6 for the complete list of events Value The value may be empty See 6 for the detailed description of this field for each event 5 5 Wizard The wizard assists the user during the DCU20 configuration The wizard should be run once at commissioning and every time the battery is replaced The wizard shows the following screens 1 The user must confirm with the System wizara 2 Insert the input nominal kerer rona OK KEY or use the MENU KEY to Do you want to voltage and click next tO input vo
15. PCA TT SWITZERLAN www nextys Dr DCU20 12 24V 20A High Performance DC UPS User Manual VM ZERLAND DCU20 12724 AO cu es DCU20 User Manual rev 16 Page 1 29 PCA TT SWITZERLAN www nextys Dr DISCLAIMER MNCKTTS reserves the right to make changes without further notice to any products herein NEXTYS makes no warranty representation or guarantee regarding the suitability of its products for any particular purpose nor does NEXTYZ assume any liability arising out of the application or use of any product and specifically disclaims any and all liability including without limitation consequential or incidental damages Typical parameters which may be provided in A amp 7YS data sheets and or specifications can and do vary in different applications and actual performance may vary overtime All operating parameters including Eos must be validated for each customer application by customer s technical experts AE 77S does not convey any license under its patent rights nor the rights of others AEXTYS sore are not designed intended or authorized for use as components in systems intended for surgical implant into the body or other applications intended to support or sustain life or for any other application in which the failure of the A774 product could create a situation where personal injury or death may occur Should Buyer purchase or use Y amp 7Y products for any such unintended or unauthorized application Buyer shall
16. S MT m 18 5 2 3 Battery nominal VONAGS sctincnnarenainsiiuvinnieaduatai in saennamusinsiiabata sient untecsusiedinenasnuies asiunsieanuitiadssiiehinsnnainuiadeneienars 18 Die iicet m 18 526 ste Glial Ce VO Wa COL Emm 18 520 Balle Vellarde SHEFelllssudendAoddndulaoqna bu cdinde enmhosavaueiulanne tid MIENNE VL enOn M HuMD SL GUT NOR 18 5 2 7 Battery deep discharge voltage usssisiecesicucci s des s n penes Uc ees enseu dca eU Id ua aqq opa diu aen iraniana kaain anie 18 5 2 8 Battery nominal internal resistance ucosconcncunesdvn seek tad exo a Gon V bad av DEVd xa GEUKV2 EG DYREC UV GROW ER UVO Yd EVITE URU VA UA 19 5 2 9 Battery maximal internal resistance variation cccccccsesececeeeeeeceeeeeeeeeeeeeecseeeeesseeeeeseaseeessaeeeessaeeees 19 5 2 10 Battery maximum temperature zu cor tudiksdwn iet ua vk wa duni VUEU d aM DEV xa iva Ua vai GER Fi VR te Und 19 5 2 11 Battery minimum temperature sssssssssssssssssseeenn nennen nnne nenne nnns 19 52 12 Battery lifelMe T M 19 5 2 13 Maximum backup tiMe urseesceuressicietieueepesest ene itetu uem od quiis qe Cur eI qute i etuuE Mi uassecdcemerane Gov EDS e E Men S Era os 19 D214 UOMO OA ERE TIE 20 B21 CNS Eee nf I TTE 20 52 16 ACRES ACI II ER 20 SPAM ASCSM TIN COUN scisctceadictzaieaticnneoansemaccisctnnucedueetiaecaadcesannateniiecia Annseceellebinadeutcmasudaieesarsalendeeushessetc
17. T START IUVS Threshold voltage triggering the alarm Description The measured input voltage is lower than the alarm threshold The threshold is calculated taking the lowest value between the input nominal voltage 5 2 1 and the battery nominal voltage 5 2 3 10 Name A J Shortname Value ALARM INPUT UNDERVOLT END IUVE The minimum input voltage reached during the alarm Description The measured input voltage returns above the alarm threshold Name 9 Shortname Value ALARM INPUT OVERVOLT START IOVS Threshold voltage triggering the alarm The measured input voltage exceeds the alarm threshold The threshold is the input nominal voltage 85 2 1 43096 Name J JjShortname Value ALARM INPUT OVERVOLT END IOVE The maximum input voltage reached during the alarm The measured input voltage returns below the alarm threshold Short name Value ALARM INPUT OVERLOAD START IOLS Threshold current triggering the alarm Description The measured input current exceeds the alarm threshold The alarm threshold is set to 22A Name Shortname Value ALARM INPUT OVERLOAD END IOLE The maximum input current reached during the alarm Description The measured input current returns below the alarm threshold DCU20 User Manual rev 16 Page 25 29 PCA TIT SWITZERLAN www nextys Dr Value Name X JShortname Value ALARM OUTPUT OVERLOAD
18. al rev 16 Page 4 29 1 System description PCA TIT SWITZERLAN www nextys Dr The DCU20 is a microprocessor controlled DC UPS rated 20A rating of the power supply connectable to the input usable in systems with a nominal voltage between 12V and 28V The DCU20 monitors the voltage coming from a DC power supply and in case of power failure a backup battery is connected to the load In normal condition the battery is kept charged by an integrated battery charger supporting various battery chemistries such Lead Acid NiMH NiCd and Lithium 1 2 3 a m READY BACKUP E D INHIBIT 6 BATTERY SENSE D BATTERY SENSE IN IN 8 OUT OUT 9 BATTERY BATTERY Figure 1 Front panel view Alarm LED indicator It is ON when the unit is in backup It blinks at 1Hz rate in case of error USB Port Used to connect a PC running the POWERMASTER application for remote monitoring and controlling Firmware update is also possible through USB connection Temperature sensor connection Used to connect a temperature sensor P N WNTC 2MT to measure the battery temperature for protection and temperature compensated charge method Relays dry contacts 2 relays are present for remote monitoring See 3 1 for more details Inhibit input A signal between 5VDC and 30VDC applied to this input inhibits the backup function this input is programmable to be active high or active low see
19. ated with the relay gt Configure See 3 1 3 for more details Relay 2 backup Input nom volt DCU20 User Manual rev 16 Page 21 29 PCA TIT SWITZERLAN www nextys Dr 5 2 28 Relay 2 Backup Used to configure the behavior of the Relay 2 contact Click OK and then follow the instruction on the screen to define the polarity and event associated with the relay See 3 1 3 for more details 5 3 While in the info menu use the UP DOWN KEY to navigate through the menu items Info 5 3 1 Firmware version Shows the current firmware version Using the freely available POWERMASTER software is possible to upgrade the firmware with the latest available version 5 3 2 Serial Shows the device serial number S N This serial number corresponds to the S N shown on the device label 5 3 3 Name Shows the device name Using the freely available POWERMASTER software is possible to modify the device name The default name is DCU 20 5 3 4 Power ON cycles counter Shows the Power ON cycles counter which is incremented by 1 every time the device is powered ON 5 3 5 Operating time Shows the device operating time The counter shows the hours of operation device powered since the manufacturing 5 3 6 Battery installation date Shows the battery installation date This value can be edited pressing the OK KEY or using the wizard see 5 5 It is used by the system to calculate the battery operating time DCU20 User
20. cteomentucenacss 20 Oe MEME LU u RDCU ease e a E ER E EE R O E A ER E 20 S M DAE ee E E E 20 S2 T E E E 20 5221 PO Sh td wn ehlable uicxcnitessecuudosxdutuduites dal a aa EE E a aa 21 0222 PFG SIUC O WI GEI srren R S 21 D22 FPO SIUC WN sosie E E E a a E Geucseasaeteeaceetaces 21 5 2 24 PC restart minimum OFF time cccceecccccccsseeeceecceeseeeeecaeeeeeeeessesseceeesseaeeeessseaeeceesssaaseeeeessaneeeees 21 5 2 25 PC OFF detection current threshold ccccccccccecccceeceseesseeceeeeeseeeeesseceeeeeeeeaesseeeeeeeessaaaaeeseeeeeeesaas 21 S ME esee E E EU T I T 21 522 V UAE L 0mc 21 5228 Relay 2 DACKUD PT iaa 22 scc cio H 22 POR MES D dn I A Iz RERO 22 IGA M 22 se INVERN Y 22 5 3 4 Power ON cycles counter ssssessssssssssseeseseene nennen nennen nnn nns n na nnns sna arn n rris nnns nnn nnns 22 DCU20 User Manual rev 16 Page 3 29 VALIS SWITZERLAND www nextys com Sr OPEO MUN eia e EATE E E E EA 22 5 3 6 Battery instalation daleki n i a ia aia naia 22 5 3 7 Battery operating time mE m mmm 23 sr re ee A E E E A E 23 Sa WNE ee E A E E A EE E E ee 23 6 Events EAM omm 24 FT e nez SO SCIHIC AN OMS ROUTE 28 DCU20 User Manu
21. e must be big enough for the PC to detect the supply ON gt OFF gt ON cycle to restart PC OFF detection User settable 5 2 26 Minimum time at which the output current timer must be below the loff current threshold to trigger the automatic PC restart PC supply ON gt OFF gt ON cycle PC OFF detection User settable 85 2 25 Current threshold used to detect PC OFF current threshold status This value must be lower than the minimum PC current consumption when this is ON Table 2 Shutdown and restart T3 PC restart minimum User settable 85 2 24 T3 is the delay used between the return OFF time of the input voltage and the activation of the output The same time is used by the automatic restart function as power OFF time The parameters are settable through the DCU20 LCD or using the POWERMASTER application as shown on the image below The checkbox Run on startup must be checked on POWERMASTER when PC shutdown function is used select Start in tray to start in minimized into the windows system tray To inhibit the software from calling the shutdown command user can select the Inhibit shutdown check box E DACHI Y 4 www nextys com l Status Settings Logs Info Config PC shutdown Date and time ae Ix Vt f POWERMASTER settings V Run on startup _ Start in tray Inhibit shutdown Run task before shutdown V Enable C lbackup exe Test PC shutdown enable V Enable PC s
22. ed free and must be connected through USB Optionally POWERMASTER can call a task on the PC before shutting down for example to backup some sensitive data Automatic restart DCU20 is able to automatically restart a PC which was powered OFF by mistake for example in case of the Operating System OS crash The user may adjust an output current threshold and a timer used for detecting the PC OFF status In order to restart the PC the DCU20 toggles the output OFF and then ON again User must enable in the PC BIOS the automatic start in case of supply ON Note The DCU20 cannot interrupt the supply flow from the input to the output Therefore the user must use one of the DCU20O available relays by activating the PC OFF signal on it in order to enable automatic PC restart when the input supply is present The relay contact rated 2A 30Vdc must be wired in series to the device output using a 4A fast cartridge fuse Littlefuse 0217004 HXP or equivalent Be careful to respect maximum current rating of the fuse DCU20 User Manual rev 16 Page 8 29 PCA TIT SWITZERLAN www nextys Dr In case the load PC current exceeds the DCU20 dry contact rating the use of an external relay with suitable current voltage rating is needed relay coil voltage shall match output voltage It should be driven by the DCU20 internal dry contact jT ej OUTPUT i D cy READY i BACKUP ig E D READY j BACKUP D IN
23. ed voltage between 12V and 28V and up to 20A of input current It includes a battery charger capable of charging Lead Acid Ni MH and LI ION batteries with a rated voltage between 12V and 28V and able to deliver a charge current up to 5A The input voltage is continuously monitored by the microprocessor In case of a power outage the battery is connected to the load instantaneously through an active switch reducing the power loss to a minimum The product offers additional features to improve the performance and the reliability of the system which are described below 3 1 Remote monitoring and controlling 3 1 1 USB The USB interface allows the communication with the proprietary POWERMASTER software available for download at www nextys com which allows the full control and monitoring of the DCU20 unit with the ease of the PC 3 1 2 Digital input An opto isolated input allows the inhibition of the backup function The polarity of the input can be defined using the Inhibit polarity setting see 5 2 14 3 1 3 Dry contact outputs 2 relays are present on the DCU20 User can chose which event activates the relay and the polarity The list of events is the following DCU20 User Manual rev 16 Page 7 29 217 14 64 SWITZERLAND www nextys com Name 9 Descipion Defaultsetting batteries battery is below 2596 exceeding the value specified on 85 2 12 Battery Ri too high Active when the measu
24. ee Cooling method Safety standard EMC standard IN Battery OUT Connectors Auxiliary contacts connectors Temperature sensor connector USB connector Size WxHxD Weight NOTE specifications may change without notice in order to improve the product Physical dimensions DCU20 User Manual rev 16 Page 28 29 PCA TIT SWITZERLAN www nextys Dr DCU20 User Manual rev 16 Page 29 29
25. ere Hours Ah The value shown is based on the following assumptions The value shown is just informative and does not represent the real state of charge of the battery in some circumstances for example if the battery is damaged DCU20 User Manual rev 16 Page 12 29 PCA TIT SWITZERLAN www nextys Dr When the battery is connected for the first time or the system starts from OFF the system assumes the battery is fully discharged and start with OAh counter For Lead acid batteries only during battery charge an approximation of charge is done checking the battery voltage Once the battery is fully charged the system sets the counter to the nominal capacity specified by the user 5 2 4 3 8 Cold start The cold start is a procedure that allows turning ON the UPS without the input power This procedure is used to turn ON the UPS to operate during a power interruption or to determine if the UPS will not turn ON due to a bad input power This practice is also a method to see if the battery connected to the DCU20 is functional In cold start the DCU 20 will remain ON for at least 60 seconds independently from the battery voltage being under the deep discharge threshold the inhibit input and the backup timer After the first 60 seconds the device stays ON until the battery is not deep discharged the Max backup timer is not expired or the inhibit input is not active If the input supply returns during cold start the device
26. hutdown delay s 20 ij PC shutdown time s 60 n PC restart minimum off time s 5 ij PC off detection current threshold A ij PC off detection timer s 30 5 Readfrom device Writetodevice Readfromfile Writetofile V Read on connection Figure 6 PC shutdown settings 3 4 Battery health monitor The battery health monitor is composed of Internal resistance Ri measurement The resistance is periodically measured The internal resistance is a good indicator of the battery health status a sudden increase of the internal resistance indicates a potential problem on the battery or on the battery wiring see 3 5 Temperature T measurement The battery temperature is monitored through an optional temperature sensor P N WNTC 2MT The battery charger takes into account the battery DCU20 User Manual rev 16 Page 10 29 PCA TIT SWITZERLAN www nextys Dr temperature and provides a temperature compensated charging voltage In case of over temperature the system disconnects the battery to prevent damage Coulomb counter It allows having a quick estimation of the remaining battery capacity and consequently the available backup time D Deep discharge protection It protects against the deep discharge of the battery which can lead to its irreversible damage 3 5 Battery resistance measurement The battery internal resistance Ri is measured by injecting a defined AC current through a constant c
27. ing that the charging voltage and charging current values are provided by the battery manufacturer The charging algorithm is shown on Figure 8 Other charging algorithms can be implemented by request The user must set to the unit the following parameters to allow the charger to perform correctly Battery chemistry selectable between Lead Acid Nickel Lithium see 5 2 2 Battery nominal voltage between 12V and 28V see 5 2 3 P Battery capacity between 1 2Ah and 150Ah see 5 2 4 P Battery charging voltage provided by the battery manufacturer see 5 2 5 DCU20 User Manual rev 16 Page 11 29 PCA TIT SWITZERLAN www nextys Dr P Battery charging current provided by the battery manufacturer see 5 2 6 P Battery deep discharge voltage see 5 2 7 The battery charger automatically reduces the current to avoid exceeding the maximum input current 20A in case of high current load For example if the load is consuming 19A and the charger current is set to 3A the charger current is automatically reduced to 1A to avoid the 20A input current limit The charger voltage is independent on the input voltage power supply and is user settable Constant current Constant voltage Maintenance Voltage User settable charge voltage User settable charge current Current Time Figure 8 Battery charging algorithm The battery charge terminates in case at least one of the following cond
28. itions are satisfied Low current The measured battery current is lower than 10 of the Battery charge current D Timer the charge is terminated after the battery has been charged for a predetermined amount of time The value is automatically calculated by the device For Nickel batteries only the following conditions are also checked Temperature Cutoff TCO The battery temperature if higher than the Battery maximal temperature 85 2 10 minus 3 C for more than one minute For example if the maximal battery temperature is set to 60 C the charge terminates in case the temperature is higher than 57 C P Rate of Temperature Increase AT dt The battery temperature is rising at a rate equal or superior then 1 C min To avoid unattended end of charge don t place the system on an ambient with rapid changes of temperature for example exposed to direct sunlight AN Warning In order to avoid potentially hazardous situations including fire hazard safety recommendations must be followed Only authorized staff can install the unit AN Warning For Lithium cells the balancing and protection circuit must be included in the battery pack For nickel batteries the use of the external temperature sensor is mandatory The sensor must be placed in contact with the battery 3 7 Coulomb counter DCU20 measures the current flowing from to the battery to keep track of the capacity available on the battery The capacity is measured in Amp
29. ium batteries For Lithium the battery pack used must include the protection and Pb balancing circuitry Batt nom volt Default Pb Batt capacity Choices Pb NiMh CC CV Lith CC CV 5 2 3 Battery nominal voltage Input nom volt Batt chemistry Used to set the nominal battery voltage Batt nom volt Default 24V gt 24 8V Range 11V 28V or input nominal voltage 20 Batt capacity Resolution 0 1V Batt ch volt 5 2 4 Battery capacity chemistry hom volt Used to set the nominal battery capacity of the battery The internal Coulomb HAMEET counter uses this value to indicate the state of charge of the battery Default 2Ah ch volt Range 1 2Ah 150Ah ces EUR Resolution 0 1Ah 5 2 5 Battery charge voltage nom Capacity Used to set the maximum voltage used to charge the battery See 83 6 for more FETESEEETNEETOESE details Default 28 8V ch deepdisch Range battery nominal voltage 33V or battery nominal voltage 40 Resolution 0 1V 5 2 6 Battery charge current capacity 2 Ch volt Used to set the maximum current used to charge the battery See 3 6 for more FETEHNEFENEFTTTR details gt 0 74 Default 0 2A deepdisch Range 0 2A 5A oer Resolution 0 1A 5 2 Battery deep discharge voltage ch volt ch curr Used to set the deep discharge voltage of the battery If the measured battery EFESSEEETTTTIETIR voltage drops below this value the system disconnects it in o
30. larm threshold The threshold is the battery maximum temperature 5 2 10 Name A Shortname Value ALARM BATTERY OVERTEMP END BOTE The maximum battery temperature reached during the alarm Description The measured battery temperature returns below the alarm threshold DCU20 User Manual rev 16 Page 26 29 VALIS SWITZERLAND www nextys com Value Name j Shotname Value ALARM BATTERY UNDERTEMP START BUTS Threshold temperature triggering the alarm Description o O Description The measured battery temperature is lower than the alarm threshold The threshold is the battery minimum temperature 5 2 11 Name Ci Shrttnaame_ Value ALARM BATTERY UNDERTEMP END BUTE The minumum battery temperature reached during the alarm Description The measured battery temperature returns above the alarm threshold Name j Shortname Value ALARM BATTERY RI TOO HIGH START Ri high start Description The measured battery internal resistance exceeds the alarm threshold The threshold is the battery nominal internal resistance 85 2 8 maximal internal resistance variation 85 2 9 Name j Shortname Value ALARM BATTERY RI TOO HIGH END Ri high end Description The measured battery internal resistance returns below the alarm threshold Shortname Value ALARM SHORT CIRCUIT Description A short circuit has been detected on the output Shortname Value DCU20 User Manual
31. ltage exit the wizard Exiting the wizard continue with confirm See 5 2 1 for more any time before the end leaves the the wizard details vinNon fEREE configuration unchanged 3 Insert the battery chemistry and 4 Insert the battery nominal gxzce zasiszi click next to confirm See 85 2 2 voltage and click next to battery voltage for more details confirm See 85 2 3 for more details UbatNom EENETY 9 Insert the battery nominal gare battery 6 Insert the battery charge gzsce battery capacity and click next to confirm capacity voltage and click next tO charge voltage See 5 2 4 for more details continue See 5 2 5 for more Chat EZ details Ucharge EENEES 7 Insert the battery charge current Select battery 8 Insert the battery deep gate battery and click next to confirm See charge current discharge protection voltage deep discharge 5 2 6 for more details and click next to confirm See 5 2 7 for more details DCU20 User Manual rev 16 Page 23 29 9 Insert the battery nominal internal resistance and click next to confirm See 5 2 8 for more details 11 Insert the battery expected lifetime and click next to confirm See 5 2 12 for more details Select battery nominal internal VALIS SWITZERLAND www nextys com 10 Insert the battery maximum temperature and click next to confirm See 5 2 10 for more details 12 Insert the battery installation date and click
32. next to confirm See 5 3 6 Select battery Select battery installation date for more details Date I 12 2012 12 The wizard is finished Click the OK KEY to start using the new values in the configuration or the MENU KEY to exit discarding the data and keep using the old configuration wizard finished Click next ta save the data or exit to discard 6 Events and Alarms EVENT POWER ON Power ON cycles count Description Triggered at device power ON Name J JjShotnmame Value EVENT POWER OFF Power OFF Description Triggered when DCU20 powers OFF Shorttname Value 1 EVENT BATTERY CHARGING Charging Triggered when the DCU20 starts charging the battery Short name Value amp EVENT BATTERY CHARGED Charged Description Triggered when the DCU20 finishes charging the battery The battery is fully charged Shorttname Value o EVENT BATTERY DISCHARGING Discharging Triggered when the DCU20 enters the backup mode DCU20 User Manual rev 16 Page 24 29 VALIS SWITZERLAND www nextys com Name yyy Shortname Value EVENT_INHIBIT_START Inhibit start Description Triggered when the inhibit input toggles from false to true Name O_o Shortname Value EVENT_INHIBIT_END Inhibit end Description Triggered when the inhibit signal toggles from true to false Name jShotname Value ALARM INPUT UNDERVOL
33. onnecting the INHIBIT input An opto isolated digital input is provided A digital signal between 5VDC and 30VDC must be applied to this input to enable the INHIBIT function By default when the signal is OV or the INHIBIT input is not connected the unit will switch the load to the battery as soon as the input voltage is no more present Applying a signal to this input inhibits the backup function and the load can be switched OFF as soon at the input fails with no battery backup The polarity of this input can be changed as explained in 5 2 14 4 6 Dry contacts 2 relays dry contacts are provided on the DCU20 Connect the 2 relays dry contact using 60 75 Class copper 0 15 0 5mm wires stripped 7 8mm The connector is provided with spring terminals Note the 2 relays contacts have one pole in common 4 7 Battery sense connection DD L 7 READY BACKUP k j DI INHIBIT INHIBIT D BATTERY SENSE D BATTERY SENSE a DD e 7 READY BACKUP LJ INHIBIT D INHIBIT ED BATTERY SENSE D BATTERY SENSE IN IN OUT OUT BATTERY BATTERY BATTERY BATTERY Rcables K m ANNE Ri Battery Battery Figure 9 Battery connection without sense Figure 10 Battery connection with sense The battery sense connection is optional and it is recommended to use it to have an accurate measurement of the battery internal
34. rated and the battery charging is stopped until the return under normal temperature level Default 10 C Range 20 C Resolution 1 C 0 C 5 2 12 Battery lifetime Used to set the expected battery lifetime Once the battery operating time exceeds the set value an alarm is generated Default 100kh Range 1kh 200kh Resolution 1kh 5 2 13 Maximum backup time Used to set the maximum time the system stays in backup before switching OFF If disabled the system stays in backup until the battery reaches the deep discharge voltage Default 2h Range 10s Resolution 1s 2h No timeout DCU20 User Manual rev 16 E deepdisch hom Ri gt Disabled Batt max temp Batt lifetime deepdisch nom max temp lifetime chemistry hom max temp Batt lifetime Max backup time deepdisch nom min temp Batt lifetime Max backup time hom Ri max temp Litetime gt 1868kh Max backup time Inhibit polarity max temp lifetime X backup time gt 2h am s Inhibit polarity screen contrast Page 19 29 VALIS SWITZERLAND www nextys com 5 2 14 Inhibit polarity Batt lifetime l MEM Max backup time Used to select the polarity of the INHIBIT input The inhibit input prevents the system mEHEESETOETZET to enter the backup mode gt High Default High Screen contrast Screen backlight Choices Low High 5 2 15 Screen contrast Max backup
35. rder to prevent irreversible damage 2 eis Ki Default 18V JE ee Range 8 2V battery nominal voltage 25 Resolution 0 1V DCU20 User Manual rev 16 Page 18 29 PCA TIT SWITZERLAN www nextys Dr 5 2 8 Battery nominal internal resistance Used to set the nominal battery internal resistance of the battery When set to automatic the system will record the next valid measurement as the nominal value When set to disabled no alarm related to the battery internal resistance will be generated Default Disabled Range 1mQ 300mQ Disabled Automatic Resolution 1mQ 5 2 9 Battery maximal internal resistance variation Combined with the nominal internal resistance it defines the threshold for the ALARM BATTERY HI TOO HIGH Default 20096 Range 20 Resolution 1 30096 5 2 10 Battery maximum temperature An optional external temperature sensor P N WNTC 2MT is required Used to set the maximum temperature at which the battery can operate safely If the measured temperature exceeds the set value an alarm is generated and the battery charging is stopped until the return under normal temperature level Default 50 C Range 30 C Resolution 1 C 80 C 5 2 11 Battery minimum temperature An optional external temperature sensor P N WNTC 2MT is required Used to set the minimum temperature at which the battery can operate safely If the measured temperature is lower than the set value an alarm is gene
36. red battery internal Relay 1 resistance Ri alarm threshold The threshold is specified using setting 85 2 8 and 85 2 9 correctly specified on 5 2 7 Battery backup time left 2596 Active when the remaining backup time is higher Unused than the 7596 of the maximal backup time defined on 5 2 13 Activated by the PC shutdown and automatic Unused restart function See 3 3 for details Table 1 Relays signals By default both relays polarity is set to NC Normal Close 3 2 Backup The system is in backup if the supply for the output is sourced from the battery input supply missing During backup the battery is monitored continuously to prevent over discharge see 5 2 7 A programmable backup timer see 5 2 13 is also implemented in order to fix a maximum backup time during power outages This allows preserving the battery life and shortening the recharge time avoiding discharging the battery when not needed During backup the internal Coulomb counter is used to give an estimation of the residual charge of the battery this information is given to the user on the LCD in form of remaining 9e and through the ready relay which starts toggling at 1Hz once the battery charge is 2096 3 3 PC shutdown and automatic restart PC shutdown In case the DCU20 is used to supply a PC it is possible to automatically shut down the PC after an adjustable time of backup For this the PC must run the POWERMASTER application provid
37. urrent source CCS in the battery and measuring the AC voltage drop across the battery terminals The principle is represented in Figure 7 The injected AC current I AC is flowing also through the cables connectors resistance Rcables Constant Current Source CCS Battery Figure 7 Internal resistance measurement Without using the battery sense connection as shown in Figure 9 the AC voltage drop is measured across the battery connection terminals on the DCU20 The measured resistance will be in this case Rmeasured Ri Rcables When high Ah batteries and or small and long cables are used Acables can be gt Hi Anyhow a connection problem as for example a loose contact can be detected by this measurement method By using the battery sense connection a Kelvin type connection as shown in Figure 10 the AC voltage drop is measured directly at the battery terminal In this case the measured resistance is exactly the battery internal resistance Ri independently on the cables length and size It is recommended to use this method to have an accurate reading of the battery internal resistance and thus an accurate prediction of the battery health status If the battery sense cables length is gt 2m it is recommended to twist the 2 wires together in order to increase the noise immunity 3 6 Battery charger The battery charger supports various chemistries such Lead Acid Nickel Lithium and every other battery chemistry assum
38. verse polarity connection and over current when operating from the battery Battery health monitoring system measuring battery internal resistance battery temperature and providing a Coulomb counter User settable maximum backup time Remote input to inhibit the UPS function Connection of a battery thermal sensor optional Integrated data logger with time stamp all events errors are logged in the internal memory and downloadable through the USB interface Automatic PC shutdown restart function see 3 3 Embedded user interface 4 buttons and 1 color graphic CSTN LCD Displays the set up status measures and alarms P Online device configuration USB port for remote monitoring and configuration Dry contacts for status monitoring POWERMASTER PC application Connection through USB interface Remote monitoring and configuration Firmware upgrade P Same functionalities of the embedded user interface with the ease of the PC benefits DCU20 User Manual rev 16 Page 6 29 VALIS SWITZERLAND www nextys com 3 Functional description A simplified block diagram of the DCU20 is shown in Figure 2 5A Battery Charger gt Buzzer Displa USB C THR USB READY Buttons BACKUP QU gt Battery health Microprocessor Figure 2 DCU20 simplified block diagram DCU20 is a high performance digitally controlled DC UPS that can be used in any DC system with a rat
Download Pdf Manuals
Related Search