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Summary of Contents for Schrack Technik AVARA MLT Series
- Page 1 USER MANUAL UNINTERRUPTIBLE POWER SUPPLY Series AVARA MLT USMLT 10, 12, 15, 20 kVA 3 phase input / 3 phase output On Line / Double Conversion (VFI) Technology...
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- Page 3 NTRODUCTION Thank you for choosing this product. Our company is specialized in the design, development and production of uninterruptible power supplies (UPS). The UPS described in this manual is a high-quality, meticulously-designed product, built to guarantee the best performance. This manual contains detailed instructions on how to use and install the product. page For information on how to use your equipment to its full potential, this manual should be kept close at hand beside the UPS and READ BEFORE STARTING TO WORK ON IT.
- Page 4 ONTENTS OVERVIEW USMLT USMLT 10/20 UPS page VIEWS USMLT 10/20 X UPS VIEWS UPS C IEW OF THE ONNECTIONS IEW OF THE ONTROL ANEL ATTERY OPTIONAL EPARATE YPASS NPUT OPTIONAL NTERNAL RANSFORMER DDITIONAL NTERNAL ATTERY HARGERS INSTALLATION TORING THE AND THE ATTERY REPARING FOR INSTALLATION RELIMINARY...
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Page 5: Table Of Contents
XTERNAL EMPERATURE ROBE EMOTE PANEL OPTIONAL ESCRIPTION RELIMINARY PERATIONS page OWERING ON FOR THE IRST OWERING ON FROM THE AINS OWERING ON FROM THE ATTERY OWERING OFF THE RAPHIC ISPLAY ISPLAY ENUS PERATING ODES (SWMB) AINTENANCE YPASS EDUNDANT UXILIARY OWER UPPLY FOR UTOMATIC YPASS... - Page 6 OVERVIEW USMLT The UPS units of the USMLT 10 – 12 – 15 – 20 kVA range (VFI-SS-111 type) have been designed using the latest technology available today so as to guarantee users maximum performance. The use of the new control PCBs based on multiprocessor architecture (DSP + µP inside) together with high frequency IGBT technology page offers excellent performance both in the input stage (absorbed current harmonic distortion ≤...
- Page 7 USMLT 10/20 UPS VIEWS page Battery start button (COLD START) Brake rod Manual bypass switch Slots for accessory communication cards Battery fuse holder isolator Communication ports (AS400, USB, RS232) Powershare sockets (10A max. total on the Output switch two sockets) and relative protection Separate bypass switch (optional) Ventilation fans Input switch...
- Page 8 USMLT 10/20 X UPS VIEWS page Battery start button (COLD START) Brake rod Manual bypass switch Slots for accessory communication cards Battery fuse holder isolator Communication ports (AS400, USB, RS232) Powershare sockets (10A max. total on the Output switch two sockets) and relative protection Separate bypass switch (optional) Ventilation fans Input switch...
- Page 9 UPS C IEW OF THE ONNECTIONS page Connection for the R.E.P.O command (Remote Emergency Power Off) (see previous page for the USMLT 10/20 X version) Power connections: BATTERY, INPUT, SEPARATE BYPASS (optional), OUTPUT Connection for remote maintenance bypass command Connection for external Battery Box temperature probe Connection for external synchronization signal Slot for power relay board...
- Page 10 IEW OF THE ONTROL ANEL page Graphic display Function keys * Left-hand LEDs area: Right-hand LEDs area: Mains power LED Stand-by / alarm LED Battery power LED Battery low LED Load on bypass LED ECO mode LED * The function of each key is indicated at the bottom of the display and varies according to the menu used.
- Page 11 ATTERY OPTIONAL THE BATTERY BOX IS AN OPTIONAL ACCESSORY. THIS UPS RANGE HAS BATTERY BOX VERSIONS OF THE SAME SIZE AND MATCHING STYLE. The Battery Box contains batteries that increase the operating time of the UPS during prolonged black-outs. The number of batteries contained in it will vary according to the type of UPS to which the Battery Box is to be installed.
- Page 12 EPARATE YPASS NPUT OPTIONAL (OPTIONAL) VERSION OF THE UPS SERIES HAS SEPARATE BYPASS AND INPUT LINES. The UPS series with separate Bypass ensures a separate connection between the input and bypass lines. The UPS output is synchronised with the bypass line so as to safeguard against incorrect voltage changeovers in the alternate phases, in the event of automatic bypass or closing of the maintenance switch (SWMB).
- Page 13 INSTALLATION ALL THE OPERATIONS DESCRIBED IN THIS SECTION ARE TO BE PERFORMED EXCLUSIVELY BY QUALIFIED STAFF. The company declines all liability for damage caused by incorrect connections or operations not described in this manual. page TORING THE AND THE ATTERY The storage room must respect the following conditions: Temperature: 0°...
- Page 14 LECTROMAGNETIC OMPATIBILITY This UPS product conforms to the current electromagnetic compatibility (EMC) regulations (C2 class). It may cause radio interference in the home environment. The user may have to adopt supplementary measures. This product is for professional use in industrial and commercial environments. Connections to USB and RS232 connectors must be made with the cables provided, or at least with shielded cables less than 3 metres long.
- Page 15 EMOVING THE AND THE ATTERY OX FROM THE ALLET USMLT 10/20 VERSION straps page remove the cardboard box by sliding it upwards Remove the accessory box and side blocks. NOTE 1: You will find the accessory either inside the door of the UPS or on top of the UPS.
- Page 16 USMLT 10/20 X V ERSION WARNING: IN ORDER TO AVOID DAMAGE TO PERSONS AND/OR TO THE MACHINES, PLEASE FOLLOW SCRUPULOUSLY THE INDICATIONS GIVEN BELOW. SOME OF THE FOLLOWING OPERATIONS REQUIRE TWO PEOPLE. page Cut the straps and slide the cardboard Remove the two brackets securing the UPS to the pallet unit pulling...
- Page 17 RELIMINARY HECK OF ONTENTS Having opened the package, start by checking the contents. BATTERY BOX (optional) Metal slides, Guarantee document, User manual, Metal slides, Guarantee document, Cable for connecting Cd-rom containing the UPS management software, the Battery Box to the UPS (USMLT 10/20 version only), Serial connecting cable, 4 battery fuses (to be 4 battery fuses (to be inserted in the "SWBATT"...
- Page 18 LECTRICAL ONNECTIONS WARNING: a 4-wire three-phase distribution system is required. The UPS must be connected to a power supply line made up of 3 phases + neutral + PE (protective earth) of TT, TN or IT type. Therefore, the phase rotation must be respected. Optional TRANSFORMER BOXES to convert the distribution systems from 3 wires to 4 wires are available.
- Page 19 UPS without any variation in neutral condition and with separate bypass input page UPS with galvanic isolation and with separate bypass input UPS with galvanic isolation at output and separate bypass input...
- Page 20 Separate bypass: if the separate bypass option is present, protective devices must be present on both the main power supply line and the bypass line. Note: the neutral of the input line and that of the bypass are commoned inside the equipment, so they must refer to the same potential.
- Page 21 NTERNAL ROTECTIVE EVICES OF THE The table below shows the sizes of the isolators of the UPS and the sizes of the battery fuses (SWBATT): these devices are accessible from the front of the UPS. There are also indications about the internal fuses (not accessible) protecting the input and output lines and the maximum input and rated output currents.
- Page 22 XTERNAL ROTECTIVE EVICES MAGNETOTHERMAL As explained previously, the UPS has protection devices for output faults as well as for internal faults. In order to set up the power line, install a magnetothermal switch upstream from the UPS with intervention curve B or C.
- Page 23 ROSS ECTION OF THE ABLES We recommend the INPUT/OUTPUT and BATTERY cables be passed under the UPS. To determine the minimum cross section of the input and output cables, see the table below: Cross section of cables (mm2) INPUT mains / OUTPUT BATTERY (optional)
- Page 24 ONNECTIONS OF THE MODEL WITH SEPARATE BYPASS The first wire to be connected is the protective earth wire, which is to be inserted in the terminal marked PE. During operation the UPS must be connected to the earthing system Connect the input and output cables to the terminal board as indicated in the figure below: THE INPUT AND BYPASS NEUTRALS MUST ALWAYS BE CONNECTED.
- Page 25 ONNECTING THE EMOTE AINTENANCE YPASS An additional maintenance bypass may be installed on a peripheral switchboard, for example, to enable the UPS to be replaced without interrupting the power supply to the load. It is absolutely essential to connect the "SERVICE BYPASS" terminal (see "View of UPS connections"...
- Page 26 REMOTE MAINTENANCE BYPASS INSTALLATION DIAGRAM ON THE THREE-PHASE-THREE-PHASE WITH SEPARATE BYPASS MODEL page Peripheral switchboard Internal connections of the UPS MAIN LINE switch: automatic circuit breaker, must conform to the indications given in "External Protective Devices " INPUT switch: isolator conforming to the indications given in "Internal Protective Devices of the UPS" OUTPUT switch: isolator conforming to the indications given in "Internal Protective Devices of the UPS"...
- Page 27 ONNECTING THE ATTERY OX TO THE THE CONNECTION BETWEEN THE UPS AND THE BATTERY BOX MUST BE MADE WITH THE DEVICES POWERED OFF AND UNPLUGGED FROM THE MAINS UPS POWER-OFF PROCEDURE: Turn off all devices connected to the UPS or use the remote bypass option (if installed). page Turn off the UPS following the relevant power-off procedure (see the “USE”...
- Page 28 ULTIPLE XPANSIONS Several Battery Boxes can be connected in a cascade to ensure prolonged autonomy. The connections should be made as shown here below: page WARNING (only for single UPS): No more than one UPS may be connected to each Battery Box or to more than one Battery Box connected in a cascade.
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Page 29: External Temperature Probe
XTERNAL EMPERATURE ROBE This NON ISOLATED input may be used to measure the temperature inside a remote Battery Box. The special kit provided by the manufacturers must be used: any methods not conforming to specifications may cause faults or breakdowns in the equipment. page To install, connect the cable included in the special kit to the "EXT BATTERY TEMP PROBE"... -
Page 30: Use
ESCRIPTION The purpose of a UPS is to ensure a perfect power supply voltage for the devices connected to it irrespective of whether mains power is present or not. Once connected and powered, the UPS generates a sinusoidal alternating page voltage with a stable amplitude and frequency, irrespective of the changes and/or variations occurring on the electricity network. -
Page 31: Preliminary Operations
RELIMINARY PERATIONS Visual check of the connection Check that all the connections have been made strictly following the indications given in the "Connections" paragraph. Check that the "1/0" button is in its "0" position (see "Front Views of the UPS" point 5). Check that all the isolators are open. - Page 32 page...
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Page 33: Powering On For The First Time
OWERING ON FOR THE IRST If present, set the “1/0” switch to “1” and wait for a few seconds. Check that the display is turned on and the UPS enters "STAND- BY" mode. page Check that no error messages appear indicating that the input cables do not respect the correct phase direction. -
Page 34: Powering On From The Mains
OWERING ON FROM THE AINS Power the UPS by closing the SWIN input switch and leaving the SWMB maintenance switch open; if present, set the “1/0” switch to “1”. After a few moments, the UPS is turned on, the capacitors are precharged and the "Lock / stand-by" LED blinks: The UPS is in stand-by mode. -
Page 35: Graphic Display
RAPHIC ISPLAY At the centre of the control panel there is a large graphic display, which provides, in the foreground and in real time, a detailed overview of the current status of the UPS. Directly from the control panel you can turn the UPS on/off, view the electrical values of the mains, output, battery, etc., and make the main machine settings. -
Page 36: Display Menus
ISPLAY ENUS page... -
Page 37: Operating Modes
PERATING ODES The mode that guarantees maximum protection for the load is ON LINE mode, in which the energy for the load is converted twice and is generated perfectly sinusoidal at the output with the frequency and voltage set by the fine digital control of the DSP irrespective of the input (V.F.I.). -
Page 38: Redundant Auxiliary Power Supply For Automatic Bypass
EDUNDANT UXILIARY OWER UPPLY FOR UTOMATIC YPASS The UPS is equipped with a redundant auxiliary power supply that enables the UPS to run on an automatic bypass even when a failure occurs in the main auxiliary power supply. If a fault occurs in the UPS shutting off the main auxiliary power supply, the load is powered by the automatic bypass. - Page 39 page...
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Page 40: Onfiguring The Ups
ONFIGURING THE The table below illustrates all the possible settings at your disposal to tailor the UPS to best satisfy your needs. (Control Panel) = Indicates that the configuration can be changed not only from the configuration software but also from the control panel. (Software) = Indicates that the configuration may only be changed from the configuration software. - Page 41 Date and Time Set the date and time page...
- Page 42 FUNCTION DESCRIPTION DEFAULT POSSIBLE SETTINGS MOD. Advanced Functions Selects the allowed • ± 0.25% input frequency range Input frequency for the switch to • ± 0.5% ± 5% tolerance bypass and • ± 0.75% synchronization of the • ± 1 ÷ ±10 in steps of 1% output page Selects the voltage...
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Page 43: Communication Ports
OMMUNICATION ORTS The UPS is supplied with the following communication ports (see “Views of the UPS): Serial port available with RS232 connector and USB connector. NOTE: the use of one connector automatically excludes the other. Port AS400 page Expansion slots for additional COMMUNICATION SLOT interface boards On the front, covered by the terminal-cover, there is another expansion slot for the power relay board (4 programmable contacts, 250Vac, 3A) RS232... -
Page 44: As400 Port
AS400 P AS400 PORT page PIN # NAME TYPE FUNCTION POWER Isolated auxiliary power supply, +15V±5% 80mA max Ground to which the isolated auxiliary power supply (15V) POWER and the remote commands (Remote ON, Remote BYPASS, Remote OFF) refer When pin 2 is connected to pin 15 for at least 3 seconds, the REMOTE ON INPUT #1 UPS is turned on... -
Page 45: Buzzer
UZZER The status and faults of the UPS are signalled by the buzzer, which will emit a sound modulated according to the operating conditions of the UPS. The various kinds of sound are described here below: page Sound A: The signal is emitted when the UPS is turned on or off using the relevant buttons. A single beep confirms power-on, activation of the battery test, cancellation of the programmed power-off. -
Page 46: Software
OFTWARE page ONITORING AND ONTROL OFTWARE The monitoring software ensures an effective and user-friendly management of the UPS, displaying all the most important items of information such as the input voltage, load applied and battery capacity. It can also automatically perform shutdown operations, send e-mails, sms and network messages when specific user-selected events occur. -
Page 47: Troubleshooting Guide
TROUBLESHOOTING GUIDE Irregular operation of the UPS is very often not an indication of a fault but is simply caused by simple problems or distractions. We therefore recommend you consult the table here below, which provides some information that will help you to solve the most common problems. - Page 48 PROBLEM POSSIBLE CAUSE SOLUTION THE JUMPER IS MISSING FROM THE R.E.P.O. THE DISPLAY SHOWS Assemble the jumper or check that it is inserted CONNECTOR (J13, REF. 15 - “VIEW OF THE UPS correctly. CONNECTIONS”) OR IS NOT INSERTED CORRECTLY page MAINTENANCE BYPASS Open the isolator (SWMB) situated behind the door.
- Page 49 PROBLEM POSSIBLE CAUSE SOLUTION PROTECTIVE DEVICE Reset the protective device upstream. WARNING: UPSTREAM FROM THE check that there is no overload or short circuit at the BYPASS LINE OPEN (ONLY IF THE DISPLAY SHOWS output of the UPS BYPASS IS SEPARATE) ONE OR MORE OF THE FOLLOWING CODES: BYPASS ISOLATOR OPEN...
- Page 50 PROBLEM POSSIBLE CAUSE SOLUTION THE DISPLAY SHOWS ONE OR MORE OF THE The batteries of the UPS should be replaced in that FOLLOWING CODES: they are no longer able to maintain the charge for a THE BATTERIES HAVE A39, A40 FAILED THE PERIODIC sufficient time to ensure the required autonomy.
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Page 51: Status / Alarm Codes
TATUS ALARM ODES Using a sophisticated self-diagnostic system, the UPS can check and indicate on the display panel its status and any errors and/or faults that have occurred during its operation. When a problem arises, the UPS signals the event by showing the code and corresponding type of alarm on the display. Status: indicates the current status of the UPS. - Page 52 Anomaly: “minor” problems that do not bring the UPS to a halt but affect its performance or inhibit the use of some of its functions. CODE DESCRIPTION Inverter Desynchronized External synchronism failed Overvoltage on input line of Phase1 Overvoltage on input line of Phase2 Overvoltage on input line of Phase3 page Undervoltage on input line of Phase1...
- Page 53 Fault: more critical problems than “Anomalies” in that, if they persist, they may bring the UPS to a halt. CODE DESCRIPTION Internal communication error Incorrect input phase direction. Input fuse of Phase1 broken or input relay blocked (will not close) Input fuse of Phase 2 broken or input relay blocked (will not close) Input fuse of Phase3 broken or input relay blocked (will not close) page...
- Page 54 Lock: indicate a breakdown of the UPS or one of its parts. Locks are normally preceded by an alarm signal. In the event of a fault and resultant breakdown of the inverter, the inverter will be switched off and the load will be powered by the bypass line (this procedure is excluded for breakdowns caused by high and persistent overloads and by short circuits).
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Page 55: Technical Data
TECHNICAL DATA UPS Models 10 kVA 12 kVA 15 kVA 20 kVA Input stage Rated voltage 380-400-415 Vac Three-phase with neutral (4 wires) Rated frequency 50-60Hz page Accepted tolerance for input voltage without ±20% @ 100% load activation of battery (for 400Vac) -40% +20% @50% load Accepted tolerance for input frequency ±20%... - Page 56 UPS Models 10 kVA 12 kVA 15 kVA 20 kVA Dimensions and weight USMLT 10/20 320 x 840 x 930 mm W x D x H USMLT 10/20 X 440 x 850 x 1320 mm USMLT 10/20 80 Kg 82 Kg 90 Kg 95 Kg Weight without...
- Page 57 Battery Box BB480-A5 BB480-M5 (USMLT 10/20) Battery Rated voltage per branch 240 Vdc No. batteries / V 40 / 12 80 / 12 Miscellaneous page 0 – 40 ° C Ambient temperature Humidity <95% non-condensing Protective devices Overcurrent – Short circuit W x D x H 320 x 840 x 930 mm Weight...
- Page 58 page MAN_USV_USMLT_10-20kVA_EN_2008_11 0MNUTT2RUD...
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