DC/AC INVERTER UNV-C USER MANUAL
Contents
1. 2011 ELTEK DEUTSCHLAND GmbH Eltek UM UNV C E R3 0 DC AC Inverter de ELTEK UNV C alwayson User Manual Page 13 32 6 Functions 6 1 Schematic Block Diagram Picture 6 1 i Schematic Block Diagram Inverter UNV C type fe nnungs Strom Spa Wandler r E 3 E es 5 H 5 3835 E 8 PET 2 r 5 luso NE pe E 3 z 5 ooooooo FET e E TE 5544 203 89 28 Lo zi E G cu G es 5 5 i o fi z 8 U En i 3 E E 3 IGBT Schalter IGBT Sw itch DC DC Converter Ste input Plug X1 2011 ELTEK DEUTSCHLAND GmbH Eltek UM UNV C E R3 0 DC AC Inverter de ELTEK UNV C always on User Manual Page 14 32 6 2 Functional Description Inverters of the UNV type are new switch mode inverters with an innovative operation principle The inverter transforms the input side DC voltage into an AC voltage with high stability concerning frequency amplitude and waveshape The unit consists of following main parts 1 Connector SUB MIN D 21 WA 4 Cliffcon 4PC S 1 2kVA 2 5kVA to connect input output voltage and signals 2 Passive filter to reduce RF interferences 3 Input circuit breaker MCB used as ON OFF s2. ELTEK DC AC INVERTER UNV C USER MANUAL SSS III SSS SS gt SSS DC AC Inverter de ELTEK UNV C always on User Manual Page 2 32 Notes to this manual ATTENTION Read this manual very carefully before installing and commissioning the specified module This manual is a part of the delivered module Familiarity with the contents of this manual is re quired for installing and operating the specified module The rules for prevention of accidents for the specific country and the general safety rules in ac cordance with IEC 364 must be observed The function description in this manual corresponds to the date of publishing Technical changes and changes in form and content can be made at any time by the manufacturer without notice There are no obligations to update the manual continually The module is manufactured in accordance with applicable DIN and VDE standards such as VDE 0106 part 100 and VDE 0100 part 410 The CE marking on the module confirms compliance with EU standards 2006 95 EG low voltage and 2004 108 EG electromagnetic compatibility if the installation and operation instructions are followed Supplier ELTEK DEUTSCHLAND GmbH BU Industrial SchillerstraBe 16 D 32052 Herford r y 49 0 5221 1708 210 FAX t 49 0 5221 1708 222 Email Info industrial eltek com Internet http www eltek com Please note No part of this document may be reproduced or transmitted i
3. 142 262 405 UNV60 1 2C 500 012 610 00 60 230 1200 142 262 285 UNV60 2 5C 500 025 610 00 60 230 2500 142 262 405 UNV110 1 2C 500 012 710 00 108 230 1200 142 262 285 UNV110 2 5C 500 025 710 00 108 230 2500 142 262 405 Available options and accessory parts e Additional connector e 19 subrack e connector fastening 3 Storage The modules must be stored in a dry dust free environment in accordance with the specified stor age temperature see technical specifications section 11 2011 ELTEK DEUTSCHLAND GmbH Eltek_UM_UNV C_E_R3 0 DC AC Inverter 1 ELTEK UNV C User Manual Page 9 32 4 Commissioning After unpacking the module check for damages based on external influences In case of mechani cal deformation do not put the module in operation The module is to be mounted into the subrack with four frontside screws Please check the input voltage level and compare it with the type lable value on the inverter mod ule before connecting DC voltage Picture 4 1 19 subrack with UNV C Inverter For mounting the units at operation site following instructions and rules have to be observed e mount in dry dustfree rooms only e observe the specifications about ambient conditions such as ambient temperature or rela tive humidity e highly dusty or aggressive chemical atmosphere is not allowed dew and dust in combina tion can cause short circuits on printed circuits e sufficient air cooling is required
4. 1708 210 FAX t 49 0 5221 1708 222 Email Info industrial eltek com Internet http www eltek com 2011 ELTEK DEUTSCHLAND GmbH All rights reserved
5. I fei glo u e qm 14 6 2 1 Safe Electrical DECOUPLING ssh 14 6 2 2 INDUC E 14 6 2 3 OUTDUE ec 15 6 2 4 Dynamic Regulation of Output Voltage ss 15 6 2 5 RF SUDPr SSION Eine ias 15 6 3 MODO CCP CO errr errr 15 6 3 LINput Voltage Monito Eesti 15 6 3 2 Output Voltage Monitoring sisi 15 6 3 3 Monitoring of Overheating ii tete cen ERA en 16 SEGETES 16 6 3 5 Adjustment of Output Parameters and Monitoring Thresholds ssss 16 6 3 6 Table Adjustable Parameters seen 20 6 3 6 CAN BUS Interface T 21 7 Parallel Operation 21 8 Electrical Connecti een E 22 8 VDC input voltage and sienals 3 ei teet dt a bees tienne 22 8 2 AC output Voltage een en recenter dep idee ia abe cn Tegernsee ten he 23 8 3 CAN B s Connector 23 9 aps 24 10 Trouble ee ni 24 TONO GUP VO tape ne 24 10 2 Distortion of Output Voltage ss 24 10 3 Error indication on the displays nn 25 LL Technical SPR Atos nn Dite ina 27 11 1 Dimensional Drawings riter cim o cere nen ern 29 T2 NOTOS usted 30 2011 ELTEK DEUTSCHLAND GmbH Eltek_UM_UNV C_E_R3 0 DC AC Inverter OG ELTEK UNV C
6. always on User Manual Page 5 32 A Safety Instructions A Warning Because several components of operating electrical modules are charged by dangerous voltage the improper handling of electrical modules may cause accidents involving electrocution injury or material damages e Operation and maintenance of electrical devices must be performed by qualified skilled personnel such as electricians in accordance with EN 50110 1 or IEC 60950 e Install the device only in areas with limited access to unskilled personnel e Before starting work the device must be disconnected from mains Make sure that the device is earthed e Donot touch connector pins as they can be charged with dangerous voltage up to 30 se conds after disconnection e Only spare parts approved by the manufacturer must be used B Electronic Waste Disposal The correct disposal of electronic waste is the responsibility to recycle discarded electronic equipment and is necessary to achieve the chosen level to protect human health and the envi ronment In the case of waste disposal of your discarded equipment we recommend to contact a profes sional waste management company 2011 ELTEK DEUTSCHLAND GmbH Eltek_UM_UNV C_E_R3 0 DC AC Inverter de ELTEK UNV C alwayson User Manual Page 6 32 1 General Information Inverters of type UNV C named UNV on next pages are available for delivery with an output pow er of 1 2 and 2 5kVA per module To inc
7. bypass switch UNB lt 40dB A at 1m distance acc to the type list acc to VDE 0160 edition 5 88 section 7 2 2 IP20 speed controlled fan monitored operation 0 40 C storage 30 65 C 1000m powder coating RAL 7035 front panel only constructive parts anodized metal DC Input and signals SUB MIN D 21WA4 frontside AC Output Cliffcon 4PC S frontside CAN BUS RJ45 Connector frontside Input output connector Eltek_UM_UNV C_E_R3 0 DC AC Inverter 0 ba ELTEK UNV C always on User Manual Page 29 32 11 1 Dimensional Drawings Picture 11 1 Dimensional drawings 405 282 at 8 9 Aus orf O O x2 UH Ein On UR 141 9 2011 ELTEK DEUTSCHLAND GmbH Eltek_UM_UNV C_E_R3 0 DC AC Inverter OG bg ELTEK UNV C alwayson User Manual Page 30 32 12 Notes 2011 ELTEK DEUTSCHLAND GmbH Eltek_UM_UNV C_E_R3 0 DC AC Inverter OG ELTEK UNV C alwayson User Manual Page 31 32 Notes 2011 ELTEK DEUTSCHLAND GmbH Eltek_UM_UNV C_E_R3 0 QE ETEK Supplier ELTEK DEUTSCHLAND GmbH BU Industrial SchillerstraBe 16 D 32052 Herford r y 49 0 5221
8. 5Voc 108V types 77 138Voc lt nominal input current 230Vac 0 5 200 255Vac 50Hz or 60Hz 40 05 synchronization range by external static switch unit 45 65Hz acc to the type list cos phi 0 8 0 5 ind 1 0 5 cap 296 for linear load up to 9296 for 50 100 load lt 3 CE label EN50081 1 EN55011 55022 class B EN50082 2 EN61000 4 part 2 3 4 5 acc to EN60950 lt 1 8mV psophometric CCITT A filter lt 3 96 for load transients between 10 96 100 10 96 of nominal output current transient time lt 0 3 ms sustained short circuit proof short circuit current 2 2 5X Inom for approx 3sec with delayed restart DC input voltage Un lt Un with automatic switch ON OFF function AC output voltage Uour overtemperature T gt and overload with automatic switch off function fan monitoring 130 for 10 sec OPERATION Uour Un lt Un lo gt T and ALARM collective failure max contact load 110Vpc 0 5A 60Voc 1A max seven units load sharing approx 5 Inom by degressive output characteristic Eltek_UM_UNV C_E_R3 0 DC AC Inverter UNV C User Manual Page 28 32 Communication Noise emission Dimensions Mechanical construction Protection class Cooling Ambient temperature Max installation altitude Surfaces Electrical connectors Additional parts included in delivery 2011 ELTEK DEUTSCHLAND GmbH QU ETEK CAN Bus interface for communication with static
9. DEUTSCHLAND GmbH Eltek_UM_UNV C_E_R3 0 DC AC Inverter de ELTEK UNV C always on User Manual Page 15 32 6 2 3 Output The unit is generally equipped with an output MCB The output is sustained short circuit proof and supplies a short circuit current of 2 to 3 x Inom for three seconds After that the unit automatically switches off and tries to switch on again for a maximum of three times after 15 seconds The inverter can be overcharged for a short time without switching off The overload alarm is pre set to 30 overload for 10 sec After 10 seconds the unit automatically switches off It must be manually restarted manually switch off and switch on again If the overload exceeds the preset overload value the unit automatically switches off with delay of three seconds 6 2 4 Dynamic Regulation of Output Voltage For load steps between 10 and 100 Inom 100 and 10 Inom the dynamic voltage deviation is lt 3 and is regulatedwithin lt 1 5 ms to static accuracy 6 2 5 RFl Suppression The UNV inverter UNV fulfills the standards EN 55011 55022 class B 6 3 Monitoring 6 3 1 Input Voltage Monitoring The input voltage is continuously monitored The actual value is compared with the programmed monitoring thresholds The thresholds can be adjusted with the front keys see section 6 3 5 The red LED Ui signalizes inverter input voltage low voltage is lower than adjusted threshold UiS The inverter switches off with
10. Page 19 32 Output voltage Output undervoltage Output overvoltage Input overvoltage Input undervolt dervolt age restart voltage Input overvoltage You can leave the adjustment mode by pressing both keys for approximately three seconds 2011 ELTEK DEUTSCHLAND GmbH x ELTEK always on Adjust the values and thresholds as follows EB BI S Bal eee HO DD RD OO DO DE A 2 Eltek UM UNV C E R3 0 DC AC Inverter OG ELTEK UNV C alwayson User Manual Page 20 32 6 3 6 Table Adjustable Parameters Following table shows the standard values factory set adjustment ranges and steps Display1 Designation Factory set Range Step la nominal value of output voltage Uo 230 Vac 200 255 10 25 V Las monitoring threshold of output voltage low Uo lt 207 Vac 180 230 1 0 V laa Monitoring threshold of output voltage high Uo 253 Vac 230 270 10 V I H n I 108V 130 0 135 0 25 108V 92 90 110 0 25 Le switch on again threshold input voltage low Ui lt 48V 45 Voc 41 108V 96 90 110 0 25 While the thresholds values Uo Uo are set with up down keys the moving dot shows the actual value For example Corresponds to 230 0 23 0 Corresponds to 230 25 23 0 Corresponds to 230 5 2 3 Corresponds to 230 75 With each click at the UP Down keys the dot moves After four times clicking 4 4 the voltage value is increased o
11. an adjustable delay time It switches on again if the input voltage is within the correct range The switch on voltage is adjustable The hysteresis and delay time pro tects the unit against an oscillation of the automatic switch off function e g if a discharged bat tery is unloaded by inverter switch off The red LED Ui gt signalizes inverter input voltage high voltage is higher than adjusted threshold Ui The inverter switches off without delay time protection against overvoltage The inverter switches on again if the input voltage is lower than adjusted switch off threshold 6 3 2 Output Voltage Monitoring The inverter output voltage is transmitted to the control unit by a voltage transformer and is compared to internally adjusted values If there is a correct output voltage the green LED Uo is on If the output voltage is lower than the adjusted threshold value e g high overload or short circuit the LED ALARM is on whereas the LED Uo is off If the output voltage is higher than the adjusted threshold value Uo the unit automatically switches off selflocking the LED ALARM is on The unit must be manually switched on 2011 ELTEK DEUTSCHLAND GmbH Eltek UM UNV C E R3 0 DC AC Inverter ax ELTEK UNV C alwayson User Manual Page 16 32 6 3 3 Monitoring of Overheating If the internal temperature of the inverter is higher than the adjusted threshold value the LED T gt is on High ambient temperat
12. cal mechanical inspection Removal of dust and dirt especially on radiator surfaces Check for internal dust or humidity Attention Dust together with dew or water can destroy the internal circuits by short circuit Dust inside the unit can be blown out with dry compressed air The intervals between this checks depends on ambient conditions of the installed module 10 Trouble Shooting All works have to be done by qualified personnel only 10 1 No Output Voltage DC input voltage O K mains switch MCB on green LED Operation on Is the DC input voltage properly connected DC input fuse on DC busbar O K signalling LED s Ui gt or Ui lt on short circuit or overload on output output fuse O K If the unit still does not work even though all checks are done please contact your sales agent or the service department of Eltek Deutschland 10 2 Distortion of Output Voltage e overload on output check and reduce the load e big inrush current of the load e distortions by load steps or current peaks e adjustment of voltage value Uo not correct Adjust to the correct value If the unit still does not work even though all checks are done please contact your sales agent or the service department of Eltek Deutschland 2011 ELTEK DEUTSCHLAND GmbH Eltek_UM_UNV C_E_R3 0 DC AC Inverter OG dg ELTEK UNV C alwayson User Manual Page 25 32 10 3 Error indication on the displays Switch off shutdown of the mo
13. dule caused by error is indicated on the displays Example Upper display 5Hd SHd Shutdown leg Lower display Error number example 129 Possible single error numbers are listed in the table below Error number decimal Meaning number 1 lo gt or Vi gt 2 Vi lt or fan error 4 Vo not ok e g restart error 8 T gt or input DC DC converter not ok 16 Internal error 32 Switch off via CAN Bus e g by static bypass switch UNB alterna tively via external switch off 64 Vo gt 128 Vo lt If more than one error appeared the result addition of the single error numbers is shown at the lower display The example above error number 129 is the result of error number 1 plus error number 128 For error numbers which include two possibilities error number 1 2 and 8 please note the LED which additionally is ON for an identification of the error A further example to clarify 5Hd Upper display SHd Shutdown 13B Lower display Error number example 138 Error number 138 is the result of 128 8 2 2 means input under voltage LED Vi lt is ON or fan error LED T gt is blinking 8 means over temperature LED T gt is ON or input DC DC converter is not ok 128 means output under voltage Because the module has switched OFF there is no output v
14. especially when mounting in cabinets with several 19 subrack levels Check mains voltage before connecting the inverter observe nominal values on type label For connection of DC input and AC output the front panel connectors X1 and X2 have to be used The DC input is protected against wrong polarity unit does not switch on The UNV is equipped with input and output fusing MCB s on front panel The inverters operate with temperature controlled fan cooling The ambient temperature must be lower than 40 C Please check the load power before connecting the module A permanent overload is not allowed and decreases the inverters lifetime Especially the inrush currents of loads have to be observed for instance a usual computer monitor can have an inrush current of more than 50A 2011 ELTEK DEUTSCHLAND GmbH Eltek_UM_UNV C_E_R3 0 DC AC Inverter de ELTEK UNV C alwayson User Manual Page 10 32 The connection of the none fused earthed conductor is required The electrical connections have to be carried out acc pin list in section 8 Please use wires acc VDE 0100 or equal standard To decrease voltage losses on cables usage of bigger sizes of wire as specified is recommended For instance a high voltage loss on battery wires can decrease the backup time Following installation rules should be observed Single inverter check system wiring polarity of DC supply line check that the inverter is switched off connec
15. ess the key UP T or DOWN J to change the adjustment parameter see the di agram on the next page 3 press both keys UP DOWN TV together for short time the inverter changes to the value change mode 4 press the key UP 1 or DOWN J to change the adjustment value 5 press both keys UP DOWN TY together for short time the inverter changes back to the adjustment mode the upper display shows a horizontal line the changed value is stored at this moment 6 press both keys UP DOWN TN for approx 3 sec to change back to the operation mode For details concerning the adjustable parameters in PM1 see the diagram a on the next page 2011 ELTEK DEUTSCHLAND GmbH Eltek UM UNV C E R3 0 DC AC Inverter OG ELTEK UNV C alwayson User Manual Page 17 32 Standard display during operation monitoring of in output parameters Output voltage Output current Input voltage Input current selftest Output D frequency ra device TI temperature T DI Kl 2011 ELTEK DEUTSCHLAND GmbH Eltek_UM_UNV C_E_R3 0 DC AC Inverter OG ELTEK UNV C User Manual Page 18 32 D Kl Output TI Complex ro power pi 3 Output Active power Power factor of the load Hardware Reset Press both keys short 12 12 4 4 For switching to the adjustment menu press both buttons for approx 3 sec see next page 2011 ELTEK DEUTSCHLAND GmbH Eltek UM UNV C E R3 0 DC AC Inverter UNV C User Manual
16. ficon X2 Ground connector gt G 5 2 LED indication The following table shows the LED status signals LED Color Meaning OPERATION green Inverter is switched on and operates Uo green Inverter output voltage o k see section 6 3 5 QUI red Input voltage high input voltage gt Adjusted monitoring threshold inverter switches off see section 6 3 5 Q Ui lt red Input voltage low input voltage Adjusted monitoring threshold inverter switches off see section 6 3 5 lo red Output current high short circuit or overload on output O T gt red Continously light overheating of inverter by overload Blinker light poor cooling Inverter switches off delayed ALARM red Collective failure delay time of relay alarm adjustable relay contact on X1 all single errors are included 2011 ELTEK DEUTSCHLAND GmbH Eltek_UM_UNV C_E_R3 0 DC AC Inverter de ELTEK UNV C alwayson User Manual Page 12 32 5 3 Adjustment keys The adjustment takes place with up down keys located at the front panel of the inverter while the displays indicate the actual values Front keys Designation Operation gt during menu item selection change to A previous item parameter up gt during adjustment mode increase value next item parameter gt during adjustment mode decrease value gt during menu item selection change to Y down For switching between the menues press both buttons for approx 3 seconds
17. n any form or by any means electronic or mechanical including photocopying and recording for whatever reason with out the explicit written permission of Eltek Deutschland GmbH Changes and errors excepted 2011 ELTEK DEUTSCHLAND GmbH All rights reserved 2011 ELTEK DEUTSCHLAND GmbH Eltek_UM_UNV C_E_R3 0 DC AC Inverter OG ELTEK UNV C alwayson User Manual Page 3 32 The current revision status of this manual is the following Revision 3 0 Date 2009 05 11 Basis is the former edition BHB UNV C D65 1000 HB102 EVI layout inserted new revision numbering X X introduced addis 20 Section Error indication on the displays inserted 2009 04 23 Sections 6 2 3 Output and 6 3 2 Output Voltage Monitor ing corrected 3 0 RTH 2009 05 11 2011 ELTEK DEUTSCHLAND GmbH Eltek UM UNV C E R3 0 DC AC Inverter ax ELTEK lways on UNV C ix User Manual Page 4 32 Table of Contents A Safety Instr CONS ee un 9 B Electronic Waste DiIsposal nn 5 T General ip ORO SE AR a 6 2 Type Range Standard eee 8 3 STOA E A AP o Ay e 8 A COMMISSIONIN ee nee ee 9 5 Handling M ER n 11 5 1 Front VIEW iii 11 o PV INCU AO ce A o AN EO A o a aa n 11 5 3 Adjustment Keys ena 12 6 FUNCION ET aeisi a a tr Omer 13 6 1 Schematie BLOCK DIagfT altis toi eee tacto ias 13 6 2 38a oto ar MP
18. of potential with 500Voc isolation to DC input 2 Relay contact with safe electrical decoupling to AC side and with 500Voc to DC COM and NC are closed at error The maximum load for the relay contacts is Umax 110Voc lt 0 45Apc Umax S 60Voc lt 1Aoc 2011 ELTEK DEUTSCHLAND GmbH Eltek UM UNV C E R3 0 DC AC Inverter OG dg ELTEK UNV C alwayson User Manual Page 23 32 3 Connection between all inverters and SBS for operation with static bypass switch SBS 4 Connection between all inverters for parallel operation 8 2 AC output voltage X2 Cliffcon 4PC S socket outlet AC output voltage Picture 8 2 B Connector X2 d 7 3 X2 Pin Designation AC output L1 No connection PE AC output N SIOINDIH 8 3 CAN Bus Connector Connector socket outlet RJ45 6 pole Picture 8 3 AN 123456 Interface Pin Signal CAN1 Signal CAN2 Designation 1 CAN_V oltage supply 8 15V 2 CAN_V Voltage supply 8 15V 3 CAN_H Signal high 4 AN_L Signal low 5 CAN_V Voltage supply Ground 6 CAN_V Voltage supply Ground 2011 ELTEK DEUTSCHLAND GmbH Eltek_UM_UNV C_E_R3 0 DC AC Inverter de ELTEK UNV C alwayson User Manual Page 24 32 9 Maintenance In general the inverter is maintenance free A yearly inspection with following checks is recommended Correct fan operation Opti
19. oltage Due to this the error output under voltage also is included 2011 ELTEK DEUTSCHLAND GmbH Eltek UM UNV C E R3 0 DC AC Inverter OG ELTEK UNV C alwayson The following display indications are exceptions At shutdown due to short circuit or overload the displays indicate the following 5Hd Upper display SHd Shutdown Lower display ovL short circuit overload oul An intended shutdown via CAN Bus by static bypass switch UNB is indicated as follows OFF Upper display OFF shutdown CA Lower display ri CAn via CAN Bus An intended shutdown via external switch off connected pins 2 amp 11 according to section 8 1 is indicated as follows Upper display UFF OFF shutdown P In Lower display PIn via external switch off 2011 ELTEK DEUTSCHLAND GmbH Eltek UM UNV C E R3 0 DC AC Inverter UNV C User Manual Page 27 32 QU ETEK 11 Technical Specifications Nominal input voltage Input voltage range Inrush current Nominal output voltage Adjustment range Output frequency Nominal output power Output power factor range Total harmonic distortion Overall efficiency Crest factor RFI suppression immunity Isolation voltage Reflected input voltage ripple Dynamic bahavior Short circuit protection Monitoring Overload capability LED Signals Relay contacts Parallel operation 2011 ELTEK DEUTSCHLAND GmbH See type list Section 2 48 60V types 42 7
20. r decreased for 1V 2011 ELTEK DEUTSCHLAND GmbH Eltek_UM_UNV C_E_R3 0 DC AC Inverter de ELTEK UNV C alwayson User Manual Page 21 32 6 3 6 CAN Bus interface The inverter is equipped with a serial data interface according to CAN Controlled Area Network specification Via CAN Bus several inverters in a system or parallel connection can be controlled and monitored by a central unit which is integrated into the static switch unit UNB Following parameters of a specific inverter unit can be controlled or read out Remote ON OFF Inverter status OK failure Output voltage measurement value Output current TRMS measurement value Input voltage measurement value Input current measurement value Output frequency measurement value Internal temperature measurement value The CAN Bus connectors are located on the front panel The wiring to the central unit shall be as shortes as possible Cable length must not exceed 30m 7 Parallel Operation ATTENTION Before starting several units in parallel it is important to check the output frequency and voltage on each unit without any connections between the units In the next step it has to be checked that the connections of the SYNC BUS wires between the modules are correct NOTE The unit which transmits the synchonization signal to the synchronization bus at first is the master If this master unit is disturbed or switched off another unit overtakes the master f
21. rease the system output power several units can be oper ated in parallel Typical applications are e AC power supply with input side battery buffering e Industrial modular UPS with input side rectifier and battery DC Input rectifier Battery Picture 1 1 UNV UNV UNV in parallel operation gg MU E E Uv AC distribution Inverter UNV C converts input side DC voltage to stable sinewave output voltage Several output frequencies are available for delivery as option UNV C are hot pluggable modules with rear side connectors Only the communication wire CAN Bus is connected on the front The inverter is controlled and monitored by internal microproces sor All main functional parameters are adjustable with front side operating keys and are indicated with digital displays Due to the excellent overall efficiency see technical data the unit has very compact dimensions 19 cassette for mounting in 19 subracks low weight and very high power density Due to the special input side regulation principle the ripple voltage limit fulfils the standard of CCITT A filtering without any additional filter elements To increase the reliability the inverter is designed to operate together with static bypass switch UNB The static bypass switch monitores the connected bypass mains and synchronises the in verter output with main
22. s frequency In inverter preselection mode the UNB transfers the load sup ply to bypass mains in case of inverter faults high overload battery low voltage The transfer is nearly without voltage interruption After problem solving the unit switches back to inverter oper ation automatically In case of mains preselection mode the inverter will take over the load if mains is not present out of limits or heavy disturbed 2011 ELTEK DEUTSCHLAND GmbH Eltek UM UNV C E R3 0 DC AC Inverter de ELTEK UNV C alwayson User Manual Page 7 32 The primary source is programmable on static switch unit For the UNB a separate manual is avail able for delivery DC Input AC Input e MS Picture 1 2 Inverter operation with static bypass switch UNB T Inverter TT Al NG UNB Static bypass switch Battery TT BS Manual bypass switch AC distribution 2011 ELTEK DEUTSCHLAND GmbH Eltek UM UNV C E R3 0 DC AC Inverter UNV C User Manual Page 8 32 2 Type Range Standard N ELTEK Type Article Code Input voltage Output voltage Output power Dimensions Designation in Voc in Vac VA cos 0 8 W H D mm UNV48 1 2C 500 012 510 00 48 230 1200 142 262 285 UNV48 2 5C 500 025 510 00 48 230 2500
23. t DC input with open DC busbar fuses connect AC loads close DC busbar fuses switch on the unit with front side MCB switch on load Inverters in parallel check system wiring polarity of DC supply line synchronous bus check that the inverters are switched off connect DC input with open DC busbar fuses check wiring between inverters synchronization wires connect AC loads close DC busbar fuses switch on the units with front side MCB s switch on load One unit operates as master and synchronizes all other units NOTE The unit which transmits the synchonization signal to the synchronization bus at first will be the master If this master unit is disturbed or switched off another unit overtakes the master function In systems with static bypass switch SBS the inverters are synchronized by the SBS unit 2011 ELTEK DEUTSCHLAND GmbH Eltek_UM_UNV C_E_R3 0 DC AC Inverter de ELTEK UNV C always on User Manual Page 11 32 5 Handling All operating elements are located on the front of the module The input and output side MCB s are used as ON OFF switch The LED s indicate the operation state of inverter All signals and monitor ings are described in the following sections 5 1 Front view Picture 5 1 Front view UNV C Digitaldisplay ai I vat LED indicators Up Down keys gt i pu Borea Y NE d E CAN BUS connectors A Connector X1 Connector Cli
24. unc tion In systems with static bypass switch SBS the inverters are synchronized by SBS unit The inverter output relay switches the inverter output to AC busbar if the internal voltage is okay and the output voltage is within the correct range On this way defective modules switch off themselves and are automatically disconnected from the AC bus 2011 ELTEK DEUTSCHLAND GmbH Eltek_UM_UNV C_E_R3 0 DC AC Inverter UNV C User Manual Page 22 32 8 Electrical Connectors 8 1 DC input voltage and signals X1 SUB MIN D 21WA4 socket outlet DC input voltage and signals Picture 8 1 Ad Connector X1 22 OO dooooocoo o o DA OE X1 Pin Designation Al DC input plus pole A2 DC input plus pole only 2 5kVA A3 DC input minus pole only 2 5kVA A4 DC input minus pole 1 No connection 2 External switch ON OFF L 3 Collective failure COM 4 Collective failure NC 5 Collective failure NO 6 7 8 SYNC STAT synchronous bus state lines SYNC SIG synchronous bus 50Hz signal SYNC GND synchronous bus ground 9 No connection 10 No connection 11 External switch ON OFF L 12 No connection 13 No connection 14 No connection 15 No connection 16 No connection 17 No connection VEUX D External switch off by connecting of an external voltage of 12 24Voc between pin 2 and 11 in put is free
25. ure poor cooling permanent overload approx 20 25 or a defec tive fan can cause overheating of the unit The inverter switches off with an adjustable delay time The inverter switches on again if the temperature is lower than the adjusted switch on threshold Additionally the fan voltage and current characteristic is monitored to detect a defective fan This is indicated by a blinking LED T gt 6 3 4 Signals All operation modes and error states are indicated by LED s which are fitted on the front panel The collective failure signal is available by an isolated relay contact on connector X1 Max contact load 60Vpc 1A 110Vpc 0 45A In case of failure the contacts COM and NC are closed 6 3 5 Adjustment of Output Parameters and Monitoring Thresholds The adjustment of output parameters and monitoring thresholds is easy The values can be ad justed with the two frontkeys by displaying the actual value The inverter offers two adjustment menus e Basic menu PM1 is available for all users e Service menu PM2 is for service personnel only PM2 has a code protection to protect against unallowed parameter changes In the operation mode the top display shows the output voltage and the bottom display shows the output current For adjustments of parameters in the basic menu PM1 the following procedure has to be used 1 press both keys UP DOWN TJ together for short time the inverter changes to the adjustment mode 2 pr
26. witch 4 Innovative DC DC converter topology consisting of MOSFET IGBT converter isola tion transformer rectifier bridge to produce a voltage of approx 380Voc capacitor block to store the DC voltage The DC DC converter modulates the input current to suppress the input AC component 5 Pulse width modulated inverter bridge 20kHz with IGBTs to convert the DC volt age to an AC voltage with high frequency and amplitude stability 6 Monitoring system for input output and internal parameters 7 Output relay necessary for parallel operation 8 Output circuit breaker MCB mechanically coupled with DC circuit breaker 9 Output AC filter for RFI suppression 10 Control board for DC DC converter 11 Control board for AC converter 12 Microprocessor based control unit performs controlling monitoring adjustments value storage and displaying of inverters parameter and serial communication via CAN Bus 6 2 1 Safe Electrical Decoupling The unit fulfills the standard EN60950 Observance of air and creeping distances the isolation transformer and the separate wiring guar antee a safe electrical decoupling between primary input and secondary output side 6 2 2 Input The DC input is protected by a magnetic circuit breaker MCB The input is equipped with inrush current limitation to limit the inrush current to the level of nomi nal input current The input voltage and current is visible at the front side digital displays 2011 ELTEK
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