PFR96 AUTOMATIC PF REGULATOR User Manual
Contents
1. Measurement SEL Main CT direction and Phase 3 i atio of power factor CT Direction l correction The first parameter that be programmed is the direction of the amperometric signal Pac coming from the main CT the default value is direct which can be changed into reverse using Active banks 5 Discharge and delay time the F keys This allows the correction of the CT direction thus eliminating the need of Bank status and power physically modifying the assembly wiring programming CT Phase This is the setting of the phase to be used to measure the current through the CT The default fina value is 27 assuming that the voltage is measured through the signal between the two programming remaining phases 12 13 making connection Harmonic threshold SEL Auxiliary Auxili The default value may be changed into L2 L3 using the and H keys qunctlon This selection eliminates the need of disassembling the CT to place it on different phase SEL RS485 Communication arameters CT Setting If the regulator is powered by a voltage transformer it is possible to set its transformation ratio of course the transformer secondary voltage must be compatible with the regulator nominal voltage The default setting does not require the presence of the2. 11 ree eee 11 5 3 Adjustment AutomatiC 11 5 4 Adjustment Manual 12 6 TECHNICAL FEATUREG 12 6 1 Constructive 12 6 2 Electrical and Operating 12 6 3 Environmental and Working 12 7 USE AND 12 Elcontrol energy 1 INTRODUCTION The 96 is a state of the art device equipped with 16bit microprocessor for the control and the automatic adjustment of the reactive power absorbed by the electric system it enables the power factor correction of an average balanced three phase line by voltage and current measurements referred to a single phase The standard measurement connection is of the type called wattless but different connection modes may be set can work without distinction 50Hz and 60Hz mains with admissible power supply measurement voltage falling within a wide range about the nominal value the measurement may also be made using a voltage transformer Current should be measured using an AT characterised by nominal secondary current of 5A and suitable power The 96 uninterruptedly controls the value of the reactive power circulating in the line and controls the output
3. POWER SUPPLY CONNECTION 5 Oe OWS UDD IY 5 VONAGE NEASU OMON erage 5 LNE Curent Mea 5 3 4 Power Factor Correction Current Measurement 5 5 4 1 Initial 05 9 6 Language Selection 6 AN a BASIC Progra MIMIO 6 4 1 3 Setting the Desired 6 CS eoccecseespacubeensec 6 7s 211 i eee eee eee 7 4 2 1 Programming the Measurement 8 A 2o AAM POO ANIMA eran ae steden deencaensessobana EEE EET ONET Nre RERE 9 4 2 4 Programming the Auxiliary Relays for alarm signalling or fan control 9 4 2 5 Programming the RS485 Communication 9 5 REGULATOR 10 ING A 10 10 5 1 2 Measurements the Power Factor Correction System 11 52 CONT ANG Protecto 11 8 12 19 2 DIe a S E SEE ET 11 5 2 2 Frequency Control
4. The displayed kW must have the GENERATED message The displayed kvar must have the IND message such conditions not met check the CT signal this is allowed by the PFR96 regulator through a specific programming page without directly operating on the CT see Advanced Programming Paragraph 4 2 1 4 1 5 Operating Test 1 Set the regulator to manual mode pressing the screen displays the top right side Press the key again to connect the remaining banks a sequence Press the key to progressively disconnect the active banks starting from the first The bank connection disconnection must cause a change of the cos read by the regulator in particular starting from the inductive cos condition with the bank connection the value must increase once 1 is reached the value read decreases again but with the CAP Capacitive identification If this does not happen either the banks are not working not powered or the AT is placed downstream of the power factor correction banks If the test is successful continue with the operating test 2 4 1 6 Operating Test 2 Set the regulator to automatic mode pressing the screen displays AUT on the top right side If the regulator is properly connected the measurements give an inductive cos a positive active power value kW If the load power is sufficient the regulator displays an up arrow meaning t
5. energy 5 REGULATOR FUNCTIONS The operation of the PFR96 automatic regulator allows carrying out measurement operations control and protection operations adjustment operations 5 1 Measurement The PFR96 regulator refreshes the on screen display every second the parameters measured are mains voltage real effective value mains current real effective value instrument internal temperature current absorbed by the power factor correction system plus versions only With the directly measured parameters the PFR96 can process three phase reactive and active power value load voltage and current THD In the plus versions there are also the data relating to the specific consumption of the power factor correction system that is three phase reactive power current and current THD The measured parameters are displayed in the second line of the screen to display the next parameter press the key the regulator displays all the available measures in a sequence 5 1 1 Counters Cosq display PAG Active power display PAG Reactiva power display PAG Voltage and current PAG Voltage and current THD display Fan operation and temperature PAG M SEL Access to counters PAG SEL Access to measurements on power factor correction system Plus version only Operating hours Number of manoeuvres Current THD PFR96 regulator can measur
6. regulator always makes the standard measurements checks and protections but does not autonomously operate on the banks to reach the target The banks may be manually connected and disconnected using the and Fkeys always actuating a sequence that controls the banks starting from the first one and proceeding to the next ones In the manual bank connection mode the PFR96 can manage the discharge times the regulator therefore may not connect a bank when the key is pressed In this case if the cause depends the need of waiting for the capacitor to be discharged the symbol of the bank concerned flashes for a few seconds wait for the discharge time to elapse and then press the key again to make the connection 6 TECHNICAL FEATURES 6 1 Constructive Characteristics Plastic container for panel mounting Dimensions front 96x96mm depth 116mm Cut out template 91x91mm Maximum weight 800g Removable terminal board with nominal section of 2 5 IP20 with safety flanges power supply terminal board excluded 6 2 Electrical and Operating Characteristics Voltage power supply according to the model 230V model 215 250V 10 400V model 380 440V 10 Voltage consumption 10VA max Amperometric power supply 0 1 5A maximum overload 6A Amperometric consumption 1VA max Frequency 50 60Hz 5 Zero setting for voltage failure and mains loss Filter ensuring normal operation even in case of considerable line in
7. outputs of which 1 and 2 respectively can be associated to the control of an external fan or to the signalling of abnormal conditions The STATIC RELAY version is equipped with static relay outputs of the zero crossing type to obtain a substantially endless life of the control device and a perfect control of the power contactor with consequent improvement of its performance PFR96 is equipped with an internal thermal probe for the management of the ventilation of the panel housing the power factor correction system and for the management of the automatic thermal overload protection procedures The plus version of the PFR96 is equipped with a second current input used to measure the current absorbed by a phase of the power factor correction system in this way it is possible to directly control the harmonic stresses that affect the power factor correction system as well as its yield in terms of power The plus version of the PFR96 may be equipped with RS485 serial communication port with standard MODBUS RTU communication protocol thus allowing the operating parameters and the output status to be checked by a remote enquiry The PFR96 is equipped with a backlit alohanumerical display for complete display of measurements anomalies and operating parameters The PFR96 displays the following measures voltage current active and reactive power voltage and current harmonic distortion working hours and number of manoeuvres for each
8. than the maximum value of current absorbed by the system to be corrected but not as high as to make the measurement unreliable for low loads to this end it may be convenient to note that the amperometric sensitivity of the 96 is equal to 1 50 of the full scale 100 on the CT secondary circuit The CT used must be of good quality class 1 minimum and of suitable power note that the amperometric loss of the 96 is equal to 1VA Connect the amperometric signal of the line current to the terminals marked with CS1 CS2 In preparing the measurement circuit note that the standard connection preset in the regulator requires the CT to be placed upstream of both the load and the power factor correction device and connected to phase L1 L2 and L3 are used for voltage measurement 3 4 Power Factor Correction Current Measurement The plus version of the PFR96 regulator is equipped with an additional current measurement input for monitoring the consumption of the power factor correction system AS with the line current also the power factor correction current measurement must be made through an amperometric transformer CT with nominal secondary current of 5A The primary current value should be selected taking into account a value higher than the nominal current of the automatic power factor equipment Such value must be less than the current absorbed by the first bank of the power factor correction system multiplied by 50 The CT use
9. CT the setting is changed pressing and H Setting the Cap s CT The plus type regulator allows measuring the current of a phase of the power factor correction system through a dedicated CT The measures associated thereto and the relevant controls are available in the automatic process The transformation ratio of the power factor correction be set using the H keys a value below 5 5A disables the power factor correction measurement function 4 2 2 Programming the Adjustment The adjustment programming menu allows the setup of the parameters required to obtain optimum adjustment compatible with the system features Press the key to proceed with a new parameter press and hold for 3 seconds to exit the adjustment parameter programming Number of Active Banks The regulator is equipped with a number of relays 6 or 12 depending on the model such relays may all or partly be used to control the capacitor connecting devices Some relays may also be used to control a forced ventilation system and or for alarm signalling However since the step control activity has priority only unused AUX type relays should be used for the optional control The regulator has a default programming of the number of banks equal to the number of relays provided on the instrument if the regulator has 6 relays the number of banks may be decreased 5 4 3 2 leaving the AUX1 relay available for the optional programming if the r
10. Icontrol energy net PFR96 AUTOMATIC PF REGULATOR User Manual Elcon trol energy nef N LIL L3 STEP STEP STEP STEP STEP LOAD 1 2 3 4 5 Control 5 banks Fig 1 4420484044 96 42 RELAYS 4A STEP STEP STEP STEP STEP LOAD 4 2 4 5 Control of 10 banks Fig 3 141213 eee eras ORR PFR96 12 RELAYS arid 55 TT 200mA 2 Control of 12 banks Fig 5 N 111213 96 6 RELAYS rrr 55529 x Control of 6 banks Fig 2 N LiL2L3 lt PFR9G 12 RELAYS STIL ae STEP STEP STEP STEP STEP 1 4 5 11 LOAD Control of 11 banks Fig 4 2 96 6 RELAYS 255 88 i i STEP STEP STEP STEP STEP LOAD 1 2 3 4 5 Connection of the Power Factor Correction CT Fig 6 Elcontrol energy ENGLISH Instruction manual 1 4 2 1 EC Declaration Conformity 4 5
11. bank The 96 is equipped with an easy level based programming system for an intuitive management of the operating parameters The 96 is equipped with a page to select the display language of on screen texts where you may choose among 5 languages English Italian Spanish French German The 96 is equipped with removable terminal boards with retaining screws for the signals coming from the and for the bank control signals so as to prevent any hazards related to the accidental release of the connectors The 96 is seated a 96x96 flush mounting container made of shock resistant plastic material The PFR96 features intelligent functions for the protection of capacitor banks the event of a low power quality level 2 SAFETY This instrument is designed and tested conformity with the regulations and is supplied by the manufacturer in perfect technical safety conditions In order to maintain these conditions and ensure safe operation the user should follow the instructions and the markings in these use instructions Before connection ensure that the operating voltage of the equipment and the mains voltage are the same e The connection points may be powered before performing any handling maintenance or repairs the instrument should be disconnected from any power sources e The capacitors inside the instrument may be charged even after the instrument has been disconnected from all power sources
12. d by the device while allowing the most demanding users to control all the available parameters the regulator programming is divided into two levels basic programming and advanced programming The basic programming only requires 2 functional system parameters The advanced programming manages several additional parameters intended for optimising the adjustment and control work of the PFR96 Elcontrol energy 4 1 Initial Settings With reference to what described above Section 3 Power Supply and Connection check that the electrical connections have been made properly Note that the CT for measuring the electrical system current must be placed upstream of both the load and the power factor correction device and connected to phase L1 L2 and L3 are used for voltage measurement After these checks the regulator is ready to be started When it is started the regulator displays the message Elcontrol Energy Net for 5 seconds after that the PFR96 model and the internal firmware version are displayed for 5 seconds 4 1 1 Language Selection Once the model and firmware version have been displayed the regulator displays the language selection page the active language is shown flashing Press the key to scroll the list and select the desired language flashing press the key to select or wait 10 seconds After that the instrument switches to warm up mode which lasts 60 seconds and is displayed on the screen to preven
13. d must be of good quality class 1 minimum and of suitable power note that the amperometric loss of the PFR96 is equal to 1VA Connect the amperometric signal of the power factor correction current to the terminals marked with CS1 CS2 3 5 Control Outputs The PFR96 regulator is equipped with a series of relay outputs of the static type with zero crossing the STATIC RELAYS version for the AC control of contactor reels There are 6 or 12 available outputs all programmed to control the contactors 1 or 2 outputs may be re programmed to control the ventilation or for alarm signalling purposes respectively in the version with 6 and 12 outputs The re programmed outputs will not be available to control capacitor banks The control circuit requires a maximum switching voltage and current of 400V 230V in the STATIC RELAYS version with one common and one control for each contactor Protect the control circuit using a delayed 4A fuse for the regulator common s Make the control and measurement circuit as shown in the figures listed below Control of 5 banks see figure 1 Control of 6 banks see figure 2 Control of 10 banks see figure 3 Control of 11 banks see figure 4 Control of 12 banks see figure 5 Cap s CT connection see figure 6 4 START UP The PFR96 regulator is designed to allow very easy start up and operation In order to allow proper start up in the simplest cases without having to set the several parameters that can be manage
14. e Ensure that any replacement guards are of the required type and nominal value The use of repaired guards is forbidden Once it has been proven that safe operation is not possible anymore the instrument should be taken out of service and ensured against accidental use Safe operation is not possible anymore in the following cases e when the instrument exhibits clearly visible damages e when the instrument is not working anymore after long storage under negative conditions after serious damages undergone during transport 2 1 EC Declaration of Conformity Declaration of conformity to Directive EEC 89 336 electromagnetic compatibility and to directives EEC 73 23 and EEC 93 68 modified low voltage Manufacturer ELCONTROL ENERGY NET S r L Via Vizzano no 44 40037 Pontecchio Marconi BO Italia Product Automatic Power Factor Regulator PFR96 Reference standards EMC in industrial environments emission EN61326 1 Electrical safety EN61010 1 Conformity EEC 89 336 EEC 72 23 EEC 93 68 Mark affixing date 2006 2 2 Operator Safety Read these pages carefully before installing and using this equipment The instrument described in this manual is intended to be used only by properly trained personnel Any maintenance and or repair operations on the open instrument should be carried out only by qualified and authorised personnel For proper and safe use of the instrument a
15. e and display some parameters related to the operating history of each bank and in particular the number of operating hours and the number of manoeuvres made the relevant data are stored to the memory every 10 hours of activity In this way it is possible to monitor the ageing level of the main components of the power factor correction bank that is capacitors and control contactors To display the bank operating data open the specific menu displayed as follows N OPERATI O SEL T ENTER OPERATING TIME STEP 1 123 Press the key to go to the next bank press and hold the key for seconds to return to the display of the mains this condition is obtained automatically if no keys are pressed for 30 seconds When 5000 hours 5000 manoeuvres are reached the symbol of an adjustable spanner is shown near the active bank symbol to suggest the check of the components in order to carry out a preventive maintenance The symbol may be cleared pressing and holding the key for 5 consecutive seconds when you are in the counter display page at the step being examined The operation is displayed on the screen as follows and it is displayed for 2 seconds Warning pressing and holding the key for 5 seconds more resets the counters of the operating hours and of the number of manoeuvres 10 energy 5 1 2 Measurements the Power Factor Correction System The plus versions all
16. egulator has 12 relays the number of banks may be decreased to 11 leaving the AUX2 relay available for the optional programming if the regulator has 12 relays the number of banks may be decreased 10 9 2 leaving the AUX1 and AUX2 relays available for the optional programming Set a number of active banks equal to their actual number using the and F keys press to go to the next parameter e briefly display the availability of the AUX relays for the optional programming Capacitor Discharge Time The capacitors must have a residual voltage of less than 10 of the nominal value before they are powered dedicated discharge devices resistors or reactors are provided which operate in a predetermined time this is the discharge time The value normally used is 30 seconds such value is factory preset The value may be changed from a minimum of 5 second to a maximum of 300 seconds using the H keys WARNING it is necessary to set the correct value compatible with the system used to discharge the capacitors Capacitor Delay Time To avoid useless manoeuvres on the capacitors both connection and disconnection times should be delayed by a few seconds The manoeuvring time is the time the insertion signal must remain active for the adjustment to be made The default value is 30 seconds the minimum settable value is 5 seconds the maximum value is 300 seconds using the Fl keys WARNING before decreasing the time be
17. em from potentially dangerous operating conditions A part of the parameters checked is associated to the programming of thresholds and of intervention modes see 4 2 3 while other parameters are checked irrespective of the settings 5 2 1 Voltage Dip The mains voltage may be subject to micro interruptions or sudden RMS value drops commonly called dip such condition may cause problems since the capacitor control contactors could become unsteady with the risk of uncertainty in the closing of the power contacts Such situation should be avoided since the capacitors would be repeatedly energised without respecting the discharge times with consequent damaging For this reason the 96 is equipped with a measurement circuit quick and privileged action that allows the instant opening of all contactor control relays as soon as the RMS voltage value drops below 50 of the nominal value with 10ms delay 8ms at 60HZ Following such intervention the regulator displays remaining in standby for 120 seconds at the end of this time the regulator resumes normal operation 5 2 2 Frequency Control The mains voltage frequency value may differ from the nominal value and may be variable over time Such value is constantly measured by the PFR96 which uses it as internal standard for the calculations An active check reports any excessive deviation of the frequency measured from the admissible value if the frequency differs by more than 5 fr
18. hat the automatic step connection procedure has started the connection continues until the measured is close to the value set default value 0 94 inductive No indications in the last box of the first line on the screen denotes a balance condition 4 2 Advanced Programming The basic programming described in Paragraph 4 1 2 is sufficient for a proper adjustment The advanced programming section contains several additional parameters to optimise and customise the device operation For a simple use of the regulator setting these parameters is not required as they are factory preset To access this programming press and hold the and H simultaneously for 3 seconds while the regulator is on The on screen display changes into the basic CT setup and first bank power pages Press the key again to display the page to access the advanced programming To access the advanced programming press the key The advanced programming menu structure is as described below to go to the next menu press the key to open the displayed menu press the key to exit the displayed menu and return to the previous level press and hold the key for 3 seconds Elcontrol energy 4 2 1 Programming the Measurement Parameters The measurement programming menu allows the setup of some measurement related parameters Press the key to proceed with a new parameter press and hold for 3 seconds to exit the measurement parameter programming
19. low 30 seconds check that the maximum manoeuvre frequency that can be obtained number of switches per minute is compatible with the manoeuvring devices capacitor control contactors Adjustment Method The PFR96 regulator is equipped with two automatic operating modes geometrical method and equalized method The default configuration is geometrica method The adjustment is performed with connections and disconnections always starting from the lower order banks available for the operation The geometrical logic exhibits the advantage of being foreseeable in its operation and only requires the setting in the basic setup of the power of the first bank In the composition of the power factor correction system a proper geometrical adjustment requires the banks to be made by associating the one of the lowest power to the first step and the following ones of the same or increasing power to a multiple value of the first bank PAG 3 PAG 3 PAG 3 Elcontrol energy The equalized method combines several important features and the following goal is achieved the regulator manoeuvres the banks irrespective of their sequence trying to obtain the set cos in the shortest possible time and with the lowest number of manoeuvres compatibly with the discharge times and giving priority to the batteries with a lower number of working hours An even system wear level is thus obtained keeping under control the ageing parameters of the capacitor
20. n the system The preset value is 0 94 inductive such setting is correct in most cases for this reason this setting may be skipped If the user wants to change this parameter while the regulator is in automatic mode press and hold the key for 3 seconds The on screen display changes into the following To change the value press and or F At the end of the programming press and hold again for 3 second to exit the pages and return to the previous operation NOTE after 30 seconds the regulator automatically switches back to standard operation 4 1 4 Start up Checks When switched on or when you exit the programming the regulator switches to the automatic or manual operating mode that was set before The operating mode set is displayed on the top right of the screen with AUT meaning automatic mode and MAN meaning manual mode In the second line the screen displays the measurements made by the regulator the proper CT connection may be checked by analysing the measured values The following table may be used as a reference System consisting of conventional loads without any correction capacitors enabled The displayed cos must have the IND message The displayed kW must not have the GENERATED message The displayed kvar must have the IND message System consisting of asynchronous generators without any correction capacitors enabled The displayed cos must have the IND message
21. nd for maintenance and or repair the individuals in charge of maintenance and or repair should observe standard safety procedures Symbol affixed on the instrument or elsewhere means that reference should be made to the instruction manual 3 POWER SUPPLY AND CONNECTION 3 1 Power Supply The PFR96 regulator is equipped with two terminals for the power supply voltage The nominal value of the active voltage is shown on the back of the instrument with a tolerance of 10 Frequency be without distinction 50Hz or 60Hz The 96 regulator is not equipped with internal fuse protection two 200mA delayed fuses should therefore be added on the power supply conductors Power the regulator through the terminals marked with V2 V3 3 2 Voltage Measurement Voltage is measured through the same connection that refers to the power supply the same limits and features therefore apply If the voltage to be measured is obtained through a potential transformer PT the nominal transformation ration should be input in the programming so as to make a correct adjustment 3 3 Line Current Measurement The line current measurement i e measurement of the total current absorbed by the system correction capacitors included is necessary for this reason it is always provided all PF R96 models it must be made through an current transformer CT with nominal secondary current of 5A The value of the nominal primary current must be higher
22. om 50 60Hz the regulator interrupts all the operations opens all capacitor control contacts and displays WRONG FREQUENCY Normal operation resumes automatically if the frequency returns within the admissible range 5 2 3 Other Checks The other parameters managed by the 96 to check the power factor correction system operating status are subject to setup and activation For specific information see 4 2 3 5 3 Adjustment Automatic Operation The main activity of the PFR96 is the adjustment meaning keeping the of the electrical system close to a programmed value target cosg compatibly with the possible dynamics for the power factor correction and with the division into banks The automatic mode is shown on the screen with the AUT indication The 96 regulator constantly checks the system cos and responds with the programmed times capacitor intervention time discharge time according to the programmed logic see 4 2 2 During the adjustment the PFR96 provides the status of each bank lighting the aL symbol at the connected capacitor banks The lighting of 4 respectively means that the regulator is about to disconnect connect one of the available capacitor banks from to the mains 11 Elcontrol energy 5 4 Adjustment Manual Operation The 96 regulator may be set to manual operating mode indicated on the screen by the with the indication In this mode the
23. ow measuring the parameters relating to the automatic power factor equipment To access these measurements after the display of the counter access menu press the key to display the measurement access menu FC EQP MEASURE Press the ISEL key to open the pages used for the power factor correction measurements the value of the reactive power supplied at that time by the power factor correction the effective value of the absorbed current pressing and the value of the percent harmonic distortion of the power factor correction current pressing displayed sequence Such parameter indicates the real harmonic overload that must be sustained by the power factor correction system this parameter be associated to an alarm protection condition to control the harmonic overload aimed to protecting the system if the limits set are exceeded NOTE for a correct measured value the power factor correction CT ratio should be set see 5 2 1 and the amperometric signal should be connected as indicated in figure 6 Press the key again to return to the power display press and hold the key for seconds to return to the display of the mains coso this condition is obtained automatically if no keys are pressed for 30 seconds 5 2 Control and Protection The PFR96 regulator is designed to perform a series of cyclic checks of the measured parameters in order to signal any abnormal situations and protect the syst
24. s contactors of each bank The proper balanced adjustment requires the first bank to be associated to the unit of the lowest power and the following banks to be made with powers of increasing value equal to the previous one with a multiple value of the first bank The power of each bank moreover must be known and set in the advanced setup Set the desired adjustment method using f and H Managing the Status of the Single Banks The 96 regulator allows the setup of the operating status for each active bank except for the first one Three modes are available always on always off managed by the regulator This feature allows to setup a bank as always on for example with the MV LV transformer power factor correction function or a bank that requires maintenance and thus must not be activated may be excluded from the regulator controlled operation In the default setting each bank is managed by the regulator according to the programming made the and F keys allow selecting ON or OFF The status programmed in each bank is applied both in automatic and in manual mode 4 2 3 Alarm Programming The PFR96 regulator can control and intervene in a large number of dangerous events Some events are regarded as dangerous when the value of the associated parameter continuously exceeds the threshold set for a preset time 120 seconds the alarm condition ends when the associated parameter drops below the trigger threshold reduced b
25. s for keeping the cos to the preset value with a high efficiency level Connection and disconnection operations only occur for reactive power variations exceeding a fraction of the power of the 1st step forming the power factor correction system and only if the intervention request lasts for a preset time The 96 can control the reactive power on the 4 quadrants to carry out the power factor correction of both loads and generators The PFR96 is equipped with a basic simplified programming page that enables low demanding users to start the instrument without the need of setting the several data that the PFR96 can manage The 96 optimises the use of the power factor correction banks balancing the operating hours thereof while trying to reach the preset coso in the shortest possible time and with the smallest number of manoeuvres see Advanced Programming The PFR96 allows the setup of the status of each bank choosing between direct regulator control or always on or always off status thus eliminating the need of specific switches to be installed on the front of the control panel The 96 is equipped with a recommended maintenance signalling system to inform the system manager that it is necessary to check the power factor correction system components the operating hour and manoeuvring number counters for each capacitor bank are available on the display The 96 is equipped with a large number of outputs 6 outputs or 12
26. t any operations on the banks when the capacitors may still be loaded After 60 seconds the regulator is ready for the adjustment operations The programming may also be performed during the initial warm up phase 4 1 2 Basic Programming For proper start up only two basic parameters need to be set for a proper measurement and adjustment To access the programming page press and hold and Fl simultaneously for 3 seconds access to programming causes the disconnection of all connected banks and the adjustment lock until you switch back to the automatic or manual operation mode The on screen display changes into The original CT ratio is 500 5A set the correct value pressing or H To go to the next page press The display changes into STANDAR D STEP 21 The original power value of the 1st bank is 50kvar set the correct value referring to the technical documentation of the automatic power factor equipment if required pressing or H NOTE the automatic determination of the first step was intentionally avoided since in the event of load variations during the acquisition process any regulator would determine the value incorrectly To exit the basic programming press and hold the key for three seconds the initial measurement page will be displayed 4 1 3 Setting the Desired Coso This setting only accessible if the regulator is set to automatic mode allows the setting of the cos to be maintained i
27. terference Cos adjustment range from 0 7 inductive to 0 7 capacitive CT setting range 5 5A to 5000 5A Minimum setting value of the first step power 1kvar Intervention time between steps settable between 5sec and 300sec Capacitor discharge time settable between 5sec and 300sec Number of output contacts according to the model 6 output model 5 NO relays with single common and 1 NO relay with two terminals 12 output model 10 NO relays with two commons and 2 NO relay with two terminals Contact capacity according to the model model with electro mechanical relay 5A 250V 2A 400V 50 60Hz model with static zero crossing relay 1A 230V 50 60Hz Relay common capacity 8A at 40 C Removable contacts with nominal section of 2 5mm Communication port optional RS485 MODBUS RTU protocol with BCD coding 6 3 Environmental and Working Conditions Protection rating of front panel 40 Operating temperature range 10 50 C condensation not allowed Storage temperature 25 70 C Indoor installation away from heat sources and from direct sunlight 7 USE AND MAINTENANCE For a proper use and maintenance of both regulator and operating system please note the following keep all parts thoroughly clean make sure all terminals are tight remedy or replace any faulty parts or connections carry out maintenance operations during installation and then every 3 months 12
28. y a hysteresis equal to 2 of the alarm value continuously and for a preset time Press the to proceed with new parameter press and hold for 3 seconds to exit the alarm programming The alarm condition triggering causes quick trigger of all active banks on screen display of the triggered alarm closing of the alarm relay if set in the auxiliary relay programming see 5 2 4 The parameters that can generate alarm conditions are voltage RMS value instant voltage peak value harmonic distortion THD of the electrical system current harmonic distortion of the current circulating in the capacitors plus versions only harmonic voltage distortion dangerous temperature threshold In addition it is possible to set the temperature threshold to start the forced ventilation which does not cause the bank trigger alarm relay closing but the closing of the auxiliary relay associated to the start of the forced ventilation if programmed see 4 2 4 Alarm thresholds have a factory preset value that usually allows an effective control of the power factor correction system mains however such thresholds be changed using the and Fl keys The value set to 0 OFF disables the corresponding alarm WARNING the alarm threshold values must be assessed and changed if required by authorised and qualified personnel Wrong alarm threshold values may seriously damage the power factor correction s
29. ystem and the electrical system 4 2 4 Programming the Auxiliary Relays for alarm signalling or fan control The 96 regulator is equipped with an auxiliary relay called AUX1 in the 6 output version and two auxiliary relays called AUX1 and 2 the 12 output version Such relays of the normally open type and each equipped with two dedicated terminals connected to the terminal board may be used to control power factor correction banks or an external fan or for signalling alarms in progress The possibility of using the auxiliary relay s for fan control or for alarm signalling depends on the setting of the number of banks to be controlled Par 5 2 2 If the auxiliary relays are associated to the control of capacitor banks access to this menu displays NOT AVAILABLE otherwise using and it is possible to select between the fan control function and the alarm signalling function Press the key to proceed with the following auxiliary relay press and hold for 3 seconds to exit the auxiliary relay programming 4 2 5 Programming the RS485 Communication Port The PFR96 plus regulator is equipped with RS485 port with MODBUS RTU communication protocol with BCD coding The parameters that can be set using the and Fl keys are Instrument address baud rate parity bit Press the key to proceed with a new parameter press and hold for 3 seconds to exit the RS485 communication parameter programming Elcontrol
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