REACTIVE ENERGY REGULATORS Instruction Manual
Contents
1. 3 The unit normally tries to regulate although it could have a regulation error Overvoltage The Possible causes Bad voltage connection voltage measure exceeds Vnom 15 The alarm output disconnects if triggered see section 3 3 The unit normally tries to regulate although it could have a regulation error 8 MAINTENANCE The computer MAX 6f 12Vdc 12f 12Vdc regulator does not require special maintenance Try to avoid any type of adjustment maintenance or repairs while the unit is open as much as possible If this cannot be avoided only qualified and trained staff should carry out these operations Disconnect the unit from all power supplies before performing any connection modifications relocation maintenance or repair operations If any operational faults in the unit or in its protection elements are suspected remove the unit from service and make sure that accidental connection is not possible The design of the unit makes it easy to replace in the event of a fault 9 TECHNICAL SERVICE If you have any doubts about the operation of the unit or suspect any malfunction contact our service staff at CIRCUTOR S A m CIRCUTOR CIRCUTOR S A After Sales Service Vial Sant Jordi s n 08232 Viladecavalls Barcelona Tel 902 449 459 Spain Tel 34 93 745 29 00 outside Spain Fax 93745 29 14 e mail sat circutor es 182. INSTALLATION AND START UP wicccccvk ceccccieccdecicccesceccecccnucdecosceccevededsdsvevcuncecccaddsenavconcesedacedcescchoosscvdevancences 9 E NG GEN Aloe TORES dr eco e ti ELA a A ea Te Eo Bi ee te Re Ge ae Ge ae 9 A LSE S AEA TO rie dl a a tae da CTR Rn e AN Ce Rn e Re 10 4 2 1 Mechanical Tata ai aa a dia diana eco as iCal 10 49 OTIC LOS ai saaa aaa T are da EI la SA add a as aaa Aa 10 4 2 3 Cable cross sections and protection elements ooooccccnnnnnnonnnnnncnnnnnnnnnnannnnnnnnnnnnnonnnnnnnnnnnnnnnnnnnnnnnnnnaninoss 1 4 2 4 WIRE EE SANS A A tidad 1 CONFIGURABLE PARAMETERS OF THE REGULATOR o cccccccccccocococoncononococonccnononononoconoconccnononocoso 12 Fd IO LAO eee ee er Aaaa O a II Oe rane 12 5 2 CURRENT OF THE SMALLEST CAPACITOR STEP aaa aaa aaa aaa aaa aaa a aaa aaa 12 23 CALCULATION OP THE GK BAC LOR i kasi ll aa aaa ai aaa ia aa nmol i ad cies 13 54 POWER CONFIGURATION OF THE STAGES OR CONFIGURATION PROGRAM cccsceccececcccececcscecescecscscsescesesees 13 5 5 CONFIGURATION OF THE CONNECTION AND RECONNECTION SYSTEM DELAYS cscecceccececcescecceccscesceseeceecees 14 5 6 SELECTION OF THE NUMBER OF STAGEG cccsscecceccscescesceccececcescescscesceecescscteceecesceseecescescescscessescesceseesuscescesees 14 5 7 SELECTION OF THE PHASE BETWEEN VOLTAGE AND CURRENT ccccscosceccecceccececcecteceecuscescectscescescesescescascesens 14 5 8 PRIMARY CURRENT CONFIGURATION OF THE CURRENT TRANSFORMER CT 0c0ceee
3. as shown in Section 721 b Alarm mode If any of the anomalies indicated in Section 3 2 occur the unit shows an error code and steps to the alarm mode Depending on the type of error the unit can disconnect all the stages or continue regulating within its possibilities 7 1 Functions of the unit in normal WORKING mode The following functions can be executed when the unit is in normal WORKING mode Manual capacitor connection When the button is pressed down and held more than 1 s the regulator begins sequentially connecting steps in time intervals of 1 second Manual capacitor disconnection If the button is held down more than 1 s the regulator disconnects the steps in sequence at time intervals of less than 1 second Display of the number of connected steps If the two buttons are pressed simultaneously the regulator shows the number of connected steps Bear in mind the difference between steps and stages Section 1 1 Parameter measurement If a short keystroke with this button is done a sequence of screens are scrolled showing the following parameters cos cosine q of the installation I current THD THD of the network current V Network voltage I MAX Maximum value reached by the current I MAX maximum value reached by the voltage The parameter displayed is indicated with the cursor Parameter measurement Scrolls through the same parameters indicated in the previous panel but in reverse order Key
4. m CIRCUTOR REACTIVE ENERGY REGULATORS computer MAX 6f 12Vdc computer MAX 12f 12Vdc CIRCUTOR computer MAX6f 12Vdc Instruction Manual MO66B01 03 15B M066B01 03 15B computer MAX 6f 12Vdc MAX 12f 12Vdc 1 M066B01 03 15B computer MAX 6f 12Vdc MAX 12f 12Vdc Table of Contents INTRODUCTION AND SAFETY TT Sonia dd 3 1 1 CHECKS TO BE CARRIED OUT WHEN THE REGULATOR IS RECEIVED cceccecsceccecceccscescusceccecescescescecessesceseeses 3 Le STARTUP Ee E E A E ace io 4 LS BE ANLE e ie AREN aa E aa Nas ETE A O A EEE a I AN E E A TIN 4 Lod A Qadan RESNO a ii a A E di 4 L32 BGP System TASI Computerized Program atada dd 4 Lo VALES MAS eS a Ia a aaa 4 Loa REU OnT TOO TON ia tai a a i e is ai a a i i i i a i a a a a i a 4 GENERAL EFATURES lt aa E OT a iai ia a ai a EEE a a a i ais 5 FRONT PANEL SCREEN AND KEY BOARD 4 ccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccecss 6 iol SCIEN 2 5 acs a a saath ae be aga een EA E 7 3 4 PARAMETR MEASUREMEN DP A duc r a a sable a as sia 7 33 ERRORS AND ERROR MESSAGES iai ac aa a a i a a a a as Das 7 3 4 MODES OF THE UNIT AND BUTTON FUNCTIONS Lisitikisiaiskosuska tee iss ida 8 3 4 1 Keypad functions in normal WORKING Mode oooonncnnnninnnnoonnncnnnnnnnnnnnnnnnnnnnnononanononnnnnnnnnnnnnnnnnnnnnnnnaninoss 6 3 4 2 Keypad functions in normal CONFIGURATION mode ooooconnnnnnnnninnnnnnnoconnnnnnnnannncnnnnnnonannnncnnnnnnnnananoss 6
5. measured rated voltage exceeds the nominal voltage by 15 or more M066B01 03 15B computer MAX 6f 12Vdc MAX 12f 12Vdc 3 4 Modes of the unit and button functions The Computer MAX 6f 12Vdc 12f 12Vdc regulators can operate in two modes Normal or Working mode This is the normal operating mode of the regulator In this mode the regulator measures the cos p of the installation and automatically regulates the connection and disconnection of the capacitors to correct it The regulation method depends on the adjustments entered in the configuration mode Configuration or Adjustment mode This mode is for configuring the working parameters of the regulator Use a long keystroke of the button to enter this mode After entering this mode the regulator progressively disconnects all the capacitors stops regulating and admits changes to the adjustments 3 4 1 Keypad functions in normal WORKING mode Keypad for entering the configuration mode After a long keystroke of this button more than 1 s the unit changes to the configuration mode Manual capacitor connection When the button is pressed down and held more than 1 s the regulator begins sequentially connecting steps in time intervals of 1 s Manual capacitor disconnection Long Keystroke more than 1 sec the regulator begins sequentially disconnecting steps in 1 s intervals 3 4 2 Keypad functions in normal CONFIGURATION mode Long Keystroke more than 1 s Enters and exi
6. this user manual is to describe the operating principles of the regulators of the Computer MAX series and to define the installation start up and operation procedures Safety The installation and maintenance of the unit must be performed by qualified and authorised staff in compliance with the national and international Standards Handling or use of the unit different from that specified by the manufacturer may compromise user safety The main switch must be disconnected before any maintenance is performed on the cos q regulation units After a disconnection wait at least 5 minutes to make sure that all capacitors have been suitably discharged The following safety precautions must be taken into account during installation maintenance or start up operations on units regulated by a computer Max Y Y 1 1 Make sure that the units have the corresponding earthing connections before they are connected A faulty earthing connection could lead to a faulty operation and represent the risk of electrical discharge to the user or person handling the unit The necessary precautions will be taken during maintenance operations to prevent the risk of electrocution and electric shock Make sure that the unit has been disconnected and wait until the capacitors have been fully discharged before handling or operating the unit We recommend the use of safety goggles and gloves Resonance can be produced when the power factor compensation
7. units are connected with no loads In this case the voltage harmonics can be amplified causing damage to the power factor compensation units and other units connected to the network Follow the start up and stop procedures described in the manual to prevent damage to the unit and or adjacent units Always use original spare parts or components when adjusting or replacing components and follow the corresponding procedures described in the instruction manual Checks to be carried out when the regulator is received On receiving the regulator check that The unit has not been damaged during transport The type supplied is the same as that requested See label on the rear Fig 1 1 Check the features shown on the unit s label to make sure that they are valid for the type of grid where the unit will be connected Voltage and power supply frequency measurement range etc Follow the instructions described in section 3 in relation to the rest of the installation and setup Please contact the technical commercial service of CIRCUTOR S A if you detect any anomalies M066B01 03 15B computer MAX 6f 12Vdc MAX 12f 12Vdc m C D POWER D joy aD a SUPPLY e ie o 400Vac i i Power S and reguency 50 measure or 60 Hz indifferently Model Computer MAX6f 12Vdc Power Supply 400 V ac 50 60 Hz 6 5 VA Measure L1 5 Aac L2 L3 400 V ac Outputs 12 2Vdc 20mA max Features of the outputs Fig 1 1 Rea
8. 0 28 25005 J 006 007 009 0 10 0 12 0 14 0 17 0 22 0 23 30005 J po 005 006 007 0 09 0 10 0 12 0 14 0 18 0 19 L 80005 006 For other network voltages the factor in the table Vnom must be multiplied by the ratio 400 V pom IMPORTANT When the C K adjustment is too low there will be a series of continuous connections and disconnections with minor load variations The system performs more operations than those actually needed When the C K adjustment is configured a little high 10 the regulator needs demand or higher reactive excess for switching and performs fewer switching operations Ds M066B01 03 15B computer MAX 6f 12Vdc MAX 12f 12Vdc 5 3 Calculation of the C K Factor In the case of values that have not been included in the table the C K factor can be calculated as follows The smallest reactive power of the capacitor Q and the network voltage V must be known The current 1c 2 3 V The transformation ratio of the current transformer must also be known This is called the K factor K I of this capacitor will be then calculated as prim iI SEC where rim Iprim is the nominal current of the transformer s primary for example in a 250 5 it would be 250A I is the transformer s secondary current Usually 5A SEC Therefore the C K factor will be C K a 0 K 3 KV Example In a 500 V unit the small
9. F THE REGULATOR A series of parameters must be programmed to adjust the regulator to the installation where the cose will be regulated The programmable parameters and configuration procedure are described below See section 3 5 2 for selecting the different configuration options The following parameters can be configured 5 1 Target cos q To adjust this parameter press the A Y buttons until the cursor B points to the option COS and then press This parameter is used to fix the desired power factor for the installation The regulator will add the number of capacitors needed to adjust the value as close as possible to the target value The regulation process is carried out in stages so that it will not affect any switching operations until the non compensated demand is at least 70 of the power of the smallest stage or the excess compensation is 30 of the power of the smallest stage Any value between 0 85 Inductive and 0 95 Capacitive can be configured 5 2 Current of the smallest capacitor step To adjust this parameter press the D Y buttons until the cursor points to the option C K and then press This parameter is adjusted with the reactive current supplied by the smallest capacitor step measured on the current transformer s CT secondary lts adjustment value will depend on the power of the smallest capacitor step the CT ratio and the network voltage Table 5 1 shows the values that must be used to adjust the C K for a 400 V n
10. ION mode e up during normal operation s mka al T the RUN LED is off and the cursor The LED shows that gt is blinking indicating the current or the Imax shown Rul parameter being adjusted Right on the display must be list multiplied by 10 Symbols indicating the connected capacitors only in NORMAL mode 3 2 Parameter measurement During the normal operating mode the regulator measures the following parameters cos mains current THD of the network current and network voltage The section also shows the maximum values of the current and network voltage from the previous parameter reset The measured parameter can be changed with the navigation arrows and is indicated by the cursor gt 3 3 Errors and ERROR Messages If the unit detects and error a code appears on the screen indicating the type of error detected The errors that can be detected and the messages displayed on the screen are summarised in Table 3 1 Table 3 1 Errors and messages displayed on the screen ERROR Description message nr ri Load current below minimum or current transformer not connected Appears if LI LII Isec lt 0 05 A Overcompensation A disconnect reguest is made and all the stages are disconnected Undercompensation A connection request is made and all the stages are connected Overcurrent The current measured exceeds the nominal current by 20 The nominal current is considered to be that of the CT primary Overvoltage The
11. be used to adapt the regulator to the different connection options of the power supply and measuring cables and the cables of the current transformer to the phases of the three phase system Fig 4 2 and 4 3 show the default configuration That is the current transformer is on phase L1 and the voltage measure between phases L2 terminal C and L3 terminal D It is often hard to check whether the unit has been wired like this or not and so one of the T1 to T6 options shown in Table 5 3 must be chosen to cater to this situation The selection of one of these options must be made in the installation assuming that during adjustment it is consuming inductive reactive power with an inductive cos between 0 7 and 1 It is necessary to keep testing options until the screen displays a cos between 0 7 and 1 Table 5 3 Phase selection options in the computer MAX V Measurement phases L3 L2 L3 L2 CT Connection Phase 3 Inverted Transformer 1 Inverted Transformer 2 Inverted Transformer L3 L2 L3 L2 L L3 L2 L L3 L2 L 5 8 Primary current configuration of the current transformer CT The adjustment for this parameter is selected at the end of the menu by marking the option Ee This is indicated by the blinking red LED The primary current of the CT must be configured in this parameter in accordance with the CT that has been installed for measuring the current of the installation The adjustment range is 0 to 999 which with the x10
12. e standards EN 61010 EN 61000 3 2 EN 61000 3 3 EN 61000 4 2 REISTENCE Standards EN 61000 4 4 EN 61000 4 8 EN 61000 4 5 EN 61000 4 11 UL 94 Category III installation as per EN 61010 1 Double insulation electric shock protection class II unit as per EN 61010 1 IP40 unit mounted cabinet front panel IP30 unit not mounted according to EN 60529 Temperature 20 C to 60 C Relative humidity max 95 non conditions condensing Max altitude 2000 m FCP Program that minimises the number of operations Total Connection Disconnection of all required capacitors M066B01 03 15B computer MAX 6f 12Vdc MAX 12f 12Vdc 4 2 Unit installation 4 2 1 Mechanical Installation In mechanical terms the unit is installed on the front panel of a cabinet or on a panel The panel fixing drill must be drilled in compliance with DIN 43 700 dimensions 138 138 mm 4 2 2 Connections The following points must be checked before the unit is powered The installation and maintenance of the unit must be performed by qualified and authorised Staff in accordance with the national and international Standards All connections must remain inside the electric panel Take into account that when the unit is connected the terminals may be hazardous to the touch and opening the covers or removing elements may expose these parts Do not use the unit until its installation is completed This regulator has a series of associated capacito
13. ed compensation functions Risk of overcompensation in the network with no load Fig 4 1 Location of the current transformer 10 M066B01 03 15B computer MAX 6f 12Vdc MAX 12f 12Vdc 4 2 3 Cable cross sections and protection elements The power circuit must be protected with gl IEC 269 or M type fuses IEC 127 with a rating of 0 5 to 2 A A circuit breaker or equivalent device must be used to connect and disconnect all of the unit s control circuits from the power supply network The switch must be installed on the unit and be easy to access The power circuit and voltage circuit must be connected with cables that have a minimum cross section of 1 5 mm The secondary cables of the current transformer CT must have a minimum cross section of 2 5 mm For distances between the CT and the regulator greater than 25 m this cross section must be increased by 1 mm for every 10 m 4 24 Wiring diagrams No Description of the terminals No Description of the terminals D Powersupply 6 Output6 B _ Current inputS2 8 Output 8 computer MAX 12f 12Vdc Negative outputs 9 Output 9 computer MAX 12f 12Vdc Output 11 computer MAX 12f 12Vdc Output 12 computer MAX 12f 12Vdc 4 Outpus o O cb PE 123456 UU Eee eee ee ESTAN Fig 4 2 Connection diagram Computer MAX 6f 12Vdc 12f 12Vdc 11 M066B01 03 15B computer MAX 6f 12Vdc MAX 12f 12Vdc 5 CONFIGURABLE PARAMETERS O
14. eeeeeeeeeeeeeeeeeeeeeeeeeeeeees 14 DEVICE MENU AND CONFIGURATION PROCEDURE cccccccccsccsccccccccccccccccccccccccccccccces 15 OL JENTERING THE SETUP MENO a L abel di edad S 15 6 2 DIAGRAM FOR NAVIGATING THROUGH THE MENUS cccsccscecccceccececcecececcecccscscscesescecescecescesscsceseseesescusesees 16 WORKING MODE riveesedsssccocwasccesscesccvedecusctnsiscacececaunteuscescsecdacuaciusiceaslesscacadeesiscavssdcavadsascdeausaedevadenicascewedcerecenees 17 7 1 FUNCTIONS OF THE UNIT IN NORMAL WORKING MODE cccecceccsceccecceccscescscescecescescescecescescescscescascuscess 17 7 2 BEHAVIOUR OF THE UNIT DURING ALARM MODE ceccecesceccecceccsceccesceccecescscestsceecscesescescscescecescascuseess 18 AuTi y Ha Pe Gei G DE E O ETEO ETE aaa ai a a an creates en eee eae 18 TECHNICAL SERVIC CE iaa cad 18 M066B01 03 15B computer MAX 6f 12Vdc MAX 12f 12Vdc 1 INTRODUCTION AND SAFETY TIPS CIRCUTOR S A thanks you for choosing one of the regulators from the Computer MAX series These units have been built with state of the art technologies including a powerful processor that can calculate the optimum algorithms and achieve the best correction of the cos q The units comply with the EN 61010 Electrical Safety Standard in accordance with the Low Voltage Directive requirements LVD 73 23 EC as well as the EMC Directive 2004 108 EC and are therefore certified for use with the CE mark CE The purpose of
15. est capacitor is 60 kvar with a current transformer having a ratio of 500 5 and the calculation would be done as follows K factor K 500 5 100 60 1000 Current of the smallest capacitor I 69 28A 3 500 C K value Ce gt ag K 100 5 4 Power configuration of the stages or configuration program To adjust this parameter press the Y buttons until the cursor points to the option Prog and then press While making the adjustment the screen switches between the options T1 to T6 and the cos The capacitor banks are composed of stages with different power ratings Taking the lowest power stage as base power 1 the powers of the rest of the stages are given in relation to the first Therefore the following programs would be available Program 1 1 1 All stages have the same power rating as the first stage Program 1 2 2 After the second stage all capacitors have a power rating that is twice as much as that of the first stage Program 1 2 4 The second stage has twice the power and the subsequent stages have a four times the power rating of the first step There are two types of actions in the same program the FCP which minimises the number of connections and disconnections and the Total which simultaneously connects and disconnects all the necessary steps The programs available in the computer MAX f are listed in Table 5 2 The unit comes configured with P00 by default This program displays the steps that shou
16. etwork between phases the different transformer ratios and the power ratings of the smallest stage In the case of other voltages or conditions that have not been included in the table the C K value can be obtained with a simple calculation as shown in section 5 1 3 Table 5 1 C K Factor in accordance with the power of the smallest stage and current transformer CT ratio CT Ratio Power in kvar of the smallest stage in kvar at 400 V p ls 25 500 75 100 125 150 200 25 0 300 37 5 40 0 50 0 60 0 75 0 80 0 1505 012 0 24 036 048 060 072 09 2005 009 0 18 027 036 045 0 54 072 090 2505 007 0 14 0 22 029 036 043 058 072 087 8005 006 0 12 018 0 24 030 0 36 048 0 60 072 090 096 4005 005 009 014 018 023 0 24 036 048 0 58 0 67 072 087 505 007 011 014 018 0 22 029 036 045 0 54 054 072 087 6005 006 009 042 0 15 0 18 024 080 0 36 045 048 060 0 72 0 90 0 96 8005 _ 007 009 0 11 0 14 0 18 0 23 0 27 0 33 036 0 45 0 54 0 68 0 72 10005 005 007 009 0 11 014 0 18 0 22 0 27 0 29 0 36 043 0 54 0 57 1505 005 006 007 010 0 12 0 14 0 18 0 19 0 24 0 29 0 36 0 38 2000858 005 007 0 09 0 11 0 13 0 14 0 18 0 22 0 27
17. factor allows a transformer primary of up to 9990 A The CT secondary comes with a default configuration of 5 A 14 M066B01 03 15B computer MAX 6f 12Vdc MAX 12f 12Vdc 6 DEVICE MENU AND CONFIGURATION PROCEDURE 6 1 Entering the setup menu To enter the setup menu of the unit press and hold button O for more than 1 s This is called a long keystroke in table 6 1 which gives a summary of the adjustment procedure The pointer gt begins flashing and points to the parameter that is going to be adjusted Use buttons D Y to select the parameter to be adjusted The unit only switches to adjustment or configuration mode if all the capacitors are disconnected Otherwise the button O must be pressed and held down during the full capacitor disconnection sequence which will be done with 1 s delays After the disconnection process ends the regulator enters the adjustment menu The navigation diagram can be found in Table 6 1 and the details on the adjustable parameters and their adjustment possibilities are shown in Section 5 1 15 M066B01 03 15B computer MAX 6f 12Vdc MAX 12f 12Vdc 6 2 Diagram for navigating through the menus Table 6 1 Setup Menu navigation diagram Parameter Screens Refer to selection Section O Long keystroke for a entering Mesurement AL i S j E igi Increase COS Q objective Home screen N l y Increase Run et Mesurement gt A KA UL men AQ igit C K P
18. ferent power ratings usually in 1 1 1 2 1 2 4 etc ratios A step is each one of the total power fractions that can be regulated by using stages with different weights 1 3 4 Regulation Program The power ratings of the different groups or stages usually follow certain patterns called programs The program indicates the power ratios between different stages The most frequent programs are M066B01 03 15B computer MAX 6f 12Vdc MAX 12f 12Vdc Program 1 1 1 All stages have the same power rating For example a 100 kvar unit with 5 steps would be composed of 5 identical 20 kvar stages and would be described as a 5 x 20 kvar unit Program 1 2 2 Starting with the second stage each stage has twice as much power as the first stage For example a 180 kvar unit with 5 stages would be composed of a first 20 kvar stage and 4 identical 40 kvar stages and so it could be described as a 20 4 x 40 kvar unit Program 1 2 4 The second stage has twice as much power as the first stage and the remaining stages after the second stage have four times as much power as the first stage For example a 300 kvar unit with 5 stages would be composed of a first 20 kvar stage a second 40 kvar stage and 3 identical 80 kvar stages and so it could be described as a 20 40 3 x 80 kvar unit Other Programs Other programs can be used such as 1 2 4 8 or 1 1 2 2 etc The numbers as can be deduced from the preceding cases give the power ratio between t
19. he first stage which receives a value of 1 and the subseguent stages 2 means twice as much power 4 means four times as much power etc The unit comes eguipped with a program called P00 that simulates and displays the number of steps that would be connected on the screen without actually connecting them It is used to see the unit s behaviour in safe mode 2 GENERAL FEATURES computer MAX 6f 12Vdc 12f 12Vdc reactive energy regulators measure the network cos and regulate the connection and disconnection of capacitors to correct it Maximum Type no outputs Computer Max 6f 12Vdc 6 outputs Computer Max 12f 12Vdc 12 outputs Here are some of the most important features of this series of regulators FCP system that minimises the number of capacitor connections and disconnections A wide variety of programs 1 1 1 1 2 2 1 2 4 1 1 2 2 etc This enables breaking down the total power into up to 31 steps in the computer MAX 4 guadrant control see Fig 2 1 with indication about the connected stages indication of the cos p power and reactive power signs inductive or capacitive IH THREE digit LCD screen with seven segments and over 20 icons for identifying different operating conditions Easy configuration with only three buttons and without having to disconnect the power supply Use of the 50 or 60 Hz frequency indifferently Display of all measurements on a single screen Easy mounting without
20. ld be connected in each situation on the screen but does not actually connect them Table 5 2 Programs available in the computer MAX Screen Display C Stage Power Ratio Po Simulator Program _ Total 1 1 1 1 1 k M066B01 03 15B computer MAX 6f 12Vdc MAX 12f 12Vdc 5 5 Configuration of the connection and reconnection system delays To adjust this parameter press the D Q buttons until the cursor points to the optionll Delay and then press This parameter establishes the unit s actuation times The adjustment time Tc establishes the delay to connect or disconnect subsequent stages The unit enables adjusting the Tc within the range of 2 to 99 network cycles The time of the network cycle depends on the frequency for example for a 50 Hz network frequency one cycle equals 20 ms Note that this is the time the capacitors need to discharge By default the parameter comes configured for 5 cycles 5 6 Selection of the number of stages To adjust this parameter press the Y Y buttons until the cursor gt points to the option I Steps and then press The option enables programming the number of outputs the regulator will have According to the computer MAX 6f 12Vdc or computer MAX 12f 12Vdc version can be configured 6 or 12 stages 5 7 Selection of the phase between voltage and current To adjust this parameter press the D Y buttons until the cursor gt points to the option Phase and then press This parameter can
21. pad for entering the configuration mode After a long keystroke of this button more than 1 s the unit changes to the configuration mode Button for erasing maximums If a long keystroke is done with this button more than 1 sec when the cursor gt marks MAX the unit resets the maximum values of and V registered while operating 17 M066B01 03 15B computer MAX 6f 12Vdc MAX 12f 12Vdc 7 2 Behaviour of the unit during ALARM mode If the unit detects an error see section 3 2 the error code will be shown on the screen and the response of the computer will act as indicated on table 7 1 Table 7 1 Unit errors and actuations ERROR Description Possible cause and computer response message Lower current Possible causes Low load or CT not connected mea ae The unit shows the RUN LED and the screen with all threshold 0 05A on th flashi dd CONEA tout the secondary CT e zeros flashing and does not connect any outpu Overcompensation A Possible causes C K incorrectly adjusted disconnect request is made and all the outputs are disconnected No outputs are connected Undercompensation Possible causes C K incorrectly adjusted Connection is requested and all the outputs are connected All the outputs remain connected except the alarm if triggered see section 3 3 Overcurrent The Possible causes C K incorrectly adjusted current measure exceeds Inom 20 The alarm output disconnects if triggered see section 3
22. r banks that remain charged up to 5 minutes after the unit has been disconnected from the mains Make sure that all capacitors have been discharged before handling the unit The installation of an external current transformer CT is necessary to measure the current Usually the transformation ratio of this CT is In 5 A where In must be a minimum of 1 5 times over the total maximum current of the load The current transformer CT must be installed on the distribution panel where all of the load currents circulate and where the current of the capacitors will be compensated see Fig 4 1 The current transformer CT should preferably be connected to phase L1 while the voltage connections should be connected to phases L2 and L3 see diagrams in Fig 4 2 and 4 3 Connections P1 P2 S1 and S2 shown on the said diagrams must be respected If the connection layout mentioned above is not respected the phase must be adjusted following the procedure in section 5 1 7 CORRECT INCORRECT LOAD The current transformers CT must measure the combined When the CT is connected in this When the CT is connected in this current of the capacitors and position NO CAPACITORS WILL position ALL CAPACITORS WILL the loads BE CONNECTED even when BE CONNECTED However they If this does not work make inductive loads are present The will not be disconnected when the sure that the CT is not short unit does not perform the load decreases circuit
23. r label of the unit 1 2 Start up Screen A start up screen will be displayed when the computer MAX is powered showing the unit s version This information must be included when reporting any fault or defect 1 3 Definitions The following definitions may be useful to understand some of the sections in this manual 1 3 1 4 Quadrant Regulator The regulator is capable of performing the measurement and regulation functions when the active power is transferred from the mains to the loads common case in a consumer installation or when the load is transferred to the mains in the case of installations with generators that not only allow the consumption of energy but can also export or sell energy 1 3 2 FCP System FAST Computerized Program This system controls the connection sequence of the different stages tending to minimise the number of operations and matching the usage times of the different stages to achieve the determined final power demand The operations are carried out in such a way that in the case of stages with an identical power the stage that has been disconnected the longest is connected when there is demand and the stage that has been connected the longest is disconnected in the case of a surplus 1 33 Stages and Steps A distinction must be established between stages and steps In this manual a STAGE is described as the capacitor banks in which the power factor compensation unit is divided and that may have dif
24. rog O Run mT s 1 3 E Change Mesurement A Program Program setting b i l Increase YA Ea Mesurement NL Next Y aa Taw Delays O 10 Eh ncrease Mesurement l LA Q Decrease j A J N O of i Nr dave stages setting O D Run Mesurement CT phase ya a l Qj increase Run DOS J3 Mesurement L a Next Primary of the CT CT primary current setting Initial screen IMPORTANT Once in the setup menu if no buttons are pressed during three minutes the unit exits the adjustment mode and changes to the normal mode without saving the configured parameters To exit the setup menu of the unit and save the parameters it is necessary to press and hold button for more than 1 sec 16 M066B01 03 15B computer MAX 6f 12Vdc MAX 12f 12Vdc 7 WORKING MODE After completing the installation and the adjustments described in the previous sections the unit can be set to the WORKING mode The unit selects this mode by default after start up and a brief moment while the processor is initialised Two situations could appear in said mode a No alarm Normal WORKING mode In this case the unit regulates the connection and disconnection of the capacitor stages according to the needs of the installation and the screen shows the coso of the installation by default By pressing certain buttons the different parameters can be measured and capacitor connection or disconnection can be forced
25. tools Dimensions in compliance with DIN 43 700 144 x 144 mm front panel Voltage measurement circuit and power supply on a single input 4 quadrant regulation importing or exporting power installation M066B01 03 15B computer MAX 6f 12Vdc MAX 12f 12Vdc Inductive 90 Inductive KW KW kVAr kVAr Cosp Coso 180 0 Capacitive Capacitive KW KW kVAr kVAr Coso Cos 90 Generated power Consumption power Fig 2 1 Signs in 4 quadrant measurements 3 FRONT PANEL SCREEN AND KEYBOARD The regulator s front panel shows the following signals Fig 3 1 Front panel of the unit NOTE There is a detailed description of the configuration process the different parameters and regulation modes in the CONFIGURATION section 6 M066B01 03 15B computer MAX 6f 12Vdc MAX 12f 12Vdc 3 1 Screen The regulator screen is a three digit LCD with seven segments lt also has several icons that provide information about the regulator state such as indicating the value of the cos the reactive power sign inductive or capacitive1F signals for the connected stages and various parameter measures see section 3 2 ScreenandLEDs Indicating Icons E l E E E In the NORMAL or WORKING Inductive reactive power EEEREN co mode the RUN LED is lit and the E Pop cursor P indicates the parameter Capacitive reactive power gt being measured Left list The LED GM red lights NS In the CONFIGURAT
26. ts the configuration mode The configured parameters are only saved after a long keystroke of the button Short Keystroke Enter Exit the configuration option different configurable parameters Attention The programmed values are not saved if a long keystroke with this button is not done when the configuration is finished Navigates upwards in the configurable parameters menu Increases the digits during parameter configuration Navigates downwards in the configurable parameters menu Decreases the digits during parameter configuration Changes the digit being configured if the parameter has more than 2 digits Disabling Enabling Alarms If the two buttons are pressed simultaneously the AGE ABn regulator shows a disabled Ul lor enabled L message of the current fault overcompensation and undercompensation alarms Section 3 3 Once they are disabled the corresponding error messages will no longer appear in the unit M066B01 03 15B computer MAX 6f 12Vdc MAX 12f 12Vdc 4 INSTALLATION AND START UP This section contains information and warnings that the user must respect at all times to guarantee his her own safety and the safe operation of the unit WARNING The Computer MAX 6f 12Vdc 12f 12Vdc regulators are connected to units with capacitors that remain charged even after the voltage has been disconnected Wait at least 5 minutes after the unit has been disconnection before the internal components of the eq
27. uipment are handled in order to avoid the risk of electric shock Handling or use of the unit other than that specified by the manufacturer may compromise user safety The power supply must be disconnected from the unit when it shows signs of deterioration or faulty operation In this case contact a qualified service representative The persons responsible for the installation or operation of the Computer MAX 6f 12Vdc 12f 12Vdc regulator must follow common electrical installation safety measures for LV or MV installations to guarantee a safe operation depending on the installation location In addition they must take into account all warnings found in this instruction manual 4 1 Technical features The main features of the unit are marked on the label on the rear see Fig 1 2 and they are also summarised in following the table 400 15 10 45 65 Hz see label voltage Terminals C D It is best to connect to phases L2 L3 With a gl type 0 5 to 2A fuse Current measurement circuit External current transformer CT In 5 ratio It is best to connect to Terminals A B phase L1 Minimum 2 5 mm cable cross section For distances greater than 25 Current measurement circuit m between the regulator and CT it is recommended to increase the cables cross section to 1 mm for every 10 m or use a CT with a higher primary In Current measurement margin computer MAX 12f 12Vdc 400 V 7 5 VA Screen O O oO OoOO O Output Referenc
Download Pdf Manuals
Related Search