ABB PQFA Instruction Manual
  1. Manuals
  2. Brands
  3. ABB Manuals
  4. Water Filtration Systems
  5. PQFA
  6. Instruction manual
ABB PQFA Instruction Manual

ABB PQFA Instruction Manual

Power quality filter
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
Instructions Manual
PQFA
Power Quality Filter
ABB Jumet

Advertisement

Table of Contents
loading

Related Manuals for ABB PQFA

Summary of Contents for ABB PQFA

  • Page 1 Instructions Manual PQFA Power Quality Filter ABB Jumet...

  • Page 2: Table Of Contents

    CONTROL CABLES SELECTION 6.4.................... 34 URRENT TRANSFORMERS INSTALLATION 6.4.1. CT’ s connection to the PQFA....................34 6.4.2. CT’ s connection topology: cases.................... 36 6.4.2.1. Case 1: Global compensation – one feeding transformer................36 6.4.2.2. Case 2: Individual compensation – one feeding transformer..............37 6.4.2.3.
  • Page 3 PQFA Instructions Manual ..........................50 ARDWARE CONNECTION COMMISSIONING..........................51 9.1. 1 ............................51 9.2. 2 ............................51 9.3. 3 ............................52 9.3.1. PQF connection diagram ....................... 52 9.3.2. Material needed & hypotheses for correct measurements ............53 9.3.3. Checking the correct connection of the CTs with a two channel scopemeter......53 9.3.3.1.
  • Page 4 PQFA Instructions Manual 12. MAINTENANCE ..........................96 12.1........................ 96 AINTENANCE FREQUENCY 12.2....................... 96 AINTENANCE PROCEDURE 12.3..............................97 12.4........................97 APACITORS REFORMING __________________________________________________________________________ Asea Brown Boveri Jumet S.A.

  • Page 5: Safety Instructions

    PQFA Instructions Manual 1. Safety instructions These safety instructions are intended for all work on the PQFA. Neglecting these instructions can cause physical injury and death. All electrical installation and maintenance work on the PQFA should be carried out by qualified electricians.

  • Page 6: Upon Reception

    EXW ABB Jumet factory). Packing for longer storage period can be done on request. If your PQFA is not installed once unpacked, it should be stored in a clean indoor, dry, dust free and non-corrosive environment. The storage temperature must be between –15°C and 70°C with a maximum relative...

  • Page 7: Pqfa Principle And Characteristics

    PQFA Instructions Manual 3. PQFA principle and characteristics 3.1. Reasons for limiting harmonics Power electronics based equipment is the main source of the harmonic pollution in electric networks. Examples of such equipment include drives (AC or DC), UPS’ s, welders, PCs, printers etc.

  • Page 8: General Principle Of Active Filtering

    PQFA Instructions Manual Distorted networks may also cause generators malfunctions. Overall it may be concluded that an excessive amount of harmonics leads to a premature ageing of the electrical installation. This is an important motivation for taking action against harmonics.

  • Page 9: The Abb Active Filter: The Pqfa

    Closed loop current control as performed by the PQFA is shown in Figure 3.4. In this topology the resulting current to the network is measured and the active filter operates by injecting a compensating current minimising this resulting current.
  • Page 10 To achieve this, we need advanced Digital Signal Processors, DSP’ s. Among the physical signals needed by the PQFA, the three line currents have obviously to be measured. Standard CTs with 5A secondary are usually sufficient. Those analogue signals must first be acquired, levelled and antialias-filtered before digitalisation.

  • Page 11: The Pqfa: Performances

    This figure highlights the need for an active filter that can operate up to sufficiently high harmonic frequencies. The PQFA can filter simultaneously 20 (15) independent harmonics up to the for 50Hz (60Hz) based networks. The number of harmonics to be filtered as well as their frequencies is completely programmable by the user.

  • Page 12: Reactive Power

    PQFA Instructions Manual Besides the harmonic selection functionality, the user has also the possibility to specify a filtration level for each selected harmonic. The PQFA will filter the selected harmonics until by the user and may be different for each selected harmonic. This functionality is especially useful when the objective is to fulfil the requirements of a standard and results in a better use of the available compensation power.

  • Page 13: Components Description And Identification

    The current generator is physically organised in power modules, each including a PWM inverter, three PWM reactors and the output filter. Each PQFA cubicle may contain one or two power modules. There is one breaker and one preloading circuit per cubicle.

  • Page 14: The Control

    4.1.2. The control For best performances, the control of the PQFA is Digital Signal Processor (DSP) based. The three lines currents are measured by external CT. Those analogue signals must first be acquired, levelled and antialias-filtered before digitalisation.

  • Page 15: Components Identification

    PQFA Instructions Manual calculation in real time, and builds the PWM references for the inverter. It is another processor, a microcontroller, which handles all digital input/output (including the command of the PWM inverter). More dedicated to control than to calculations, this microcontroller ensures for instance the closing of relays and contactors.
  • Page 16 PQFA Instructions Manual A more detailed identification is given in the following pages. The identification hereafter is related to the drawings of the following pages. Internal views indicate the position of identified components but fixation details are not included. Although visible on the drawings, some components may actually be hidden in the real structure.
  • Page 17 PQFA Instructions Manual Preloading circuit Preload contactor R14/15 Preload resistor Preload bridge Control rack A111 Digital I/O board A112 Interface board – IGBT’ s and DSP A113 Digital Signal Processor A119 Interface PQF Manager board A114 Current input board A115...
  • Page 18 PQFA Instructions Manual Terminal power supply wiring Terminal DC bus wiring Terminal signaling wiring Terminal inter cubicles wiring A104 DC voltage convertor Asea Brown Boveri Jumet S.A.
  • Page 19 PQFA Instructions Manual Master cubicle view Zoom on next page Asea Brown Boveri Jumet S.A.
  • Page 20 PQFA Instructions Manual Asea Brown Boveri Jumet S.A.
  • Page 21 PQFA Instructions Manual Control rack details Asea Brown Boveri Jumet S.A.
  • Page 22 PQFA Instructions Manual Master cubicle door view Asea Brown Boveri Jumet S.A.
  • Page 23 PQFA Instructions Manual Auxiliary cubicle view Zoom on next page Asea Brown Boveri Jumet S.A.
  • Page 24 PQFA Instructions Manual Asea Brown Boveri Jumet S.A.
  • Page 25 PQFA Instructions Manual Slave cubicle door view Asea Brown Boveri Jumet S.A.

  • Page 26: Mechanical Installation

    PQFA#2 PQFA#1 PQFA#2 PQFA cubicles have standard dimensions of 800 x 600 x 2150 mm (width x depth x height). Each cubicle may contain one or two power modules and is fitted with its own bottom cable entry and breaker.
  • Page 27 PQFA Instructions Manual For PQFA with top cable entry, an additional cubicle for cable connection is added. CAUTION The PQFA dissipates significant amounts of heat that have to be evacuated out of the room where the filter is located. Otherwise, you may experience excessive temperature rise.
  • Page 28 PQFA Instructions Manual Asea Brown Boveri Jumet S.A.

  • Page 29: Electrical Installation

    PQFA Instructions Manual 6. Electrical installation Your PQFA is a parallel active filter: it is installed in parallel with the load(s). Connection implies: ? ? 3 power cables ? ? 3 CT (one per phase) ? ? 6 control wires for the CT ? ? Ground/PE 6.1.
  • Page 30 PQFA Instructions Manual - If the cable section found is bigger than the previously found value, step 2 and 3 have to be repeated until the cable sections are equal (see example below). Remark: during this process, it can be found that more than one cable per phase is needed.
  • Page 31 PQFA Instructions Manual Example n°2: PQFA-A 155A 480V 60hz = 155A ? cable section (*) = 70 [mm Step 1: I Step 2: multiplication factor for a 70 [mm ] copper cable at 60hz = 1.13 Step 3: I = I x 1.13 = 155A x 1.13 = 175 A...

  • Page 32: Current Transformers/Control Cables Selection

    If single core cables are used an alloy gland plate is recommended. Cable terminals dimensions are shown hereafter. Note for top cable entry PQFA: if you filter is fitted with an additional cubicle for top cable entry, you only need one set of 3 power cables to be connected to the busbar installed in the connection cubicle.
  • Page 33 PQFA Instructions Manual Asea Brown Boveri Jumet S.A.

  • Page 34: Current Transformers Installation

    Special care has to be taken for the connection and location of the CT’ s: it is the most current source of problems occurring at commissioning stage. WARNING: when connecting the CT’ s to the PQFA, the secondaries of the CT’ s have to be short-circuited.
  • Page 35 PQFA Instructions Manual Supply side Load side X5.6 X5.5 X5.4 X5.3 X5.2 X5.1 Asea Brown Boveri Jumet S.A.

  • Page 36: Ct' S Connection Topology: Cases

    PQFA Instructions Manual 6.4.2. CT’ s connection topology: cases The location of the CT’ s is critical to ensure the proper operation of the active filter. The CT’ s are the “ eyes” of the filter and it will react in accordance with the information supplied by them.

  • Page 37: Case 2: Individual Compensation - One Feeding Transformer

    PQFA Instructions Manual The connection of the CT’ s to the active filter must be as represented herafter: Supply side Load side X5.6 X5.5 X5.4 X5.3 X5.2 X5.1 K = P1, L = P2, k = S1, l = S2 Figure 6.2.

  • Page 38: Case 3: Global Compensation - Transformer Busbar Not Accessible

    PQFA Instructions Manual – – The active filter is required to filter the loads of side A and side B but the transformer busbar not being accessible, the CT’ s cannot be installed in central position. LOADS LOADS (Side A) (Side B) Figure 6.4.
  • Page 39 PQFA Instructions Manual CT 1 (one per phase) Primary: X CT 2 (one per Secondary: 5A phase) Summation Primary: X Secondary: 5A (one per phase) Primary 1: 5 A Primary 2: 5A Secondary: 5A LOADS LOADS (Side A) (Side B) Figure 6.5.

  • Page 40: Case 4: Two Independent Feeding Transformers

    PQFA Instructions Manual P1, K S1, k S2, l P2, L S1, k P1, K S2, l P2, L Side A Side B Figure 6.6. Connection between CT1, CT2 , the summation CT and PQF for one phase. Two independent transformers (the tie is normally open) feeds two different set of loads.
  • Page 41 PQFA Instructions Manual S1, k S1, k P1, K P1, K S2, l S2, l P2, L P2, L P1 P2 P1 P2 P1 P2 P1 P2 S1 S2 S1 S2 I’ 1-I’ 0 I’ 2+I’ 0 PQF 1 PQF 2 Figure 6.8.

  • Page 42: Case 5: Back Up Generator

    PQFA Instructions Manual Condition 3: the tie is closed but only one transformer feeds the loads (degraded mode). If only T1 feeds the loads with the tie closed, PQF1 sees (I1-I0) and PQF2 sees I0 (I2 is zero). If only T2 feeds the load, I1 will be zero.

  • Page 43: Precautions With Capacitors

    Those harmonics have to be deselected (see chapter 10 on programming the filter). Networks where the PQFA is installed have large harmonic content and it is highly recommended that capacitor banks be fitted with detuning reactors.

  • Page 44: Cubicles Interconnections

    PQFA Instructions Manual 7. Cubicles interconnections 7.1. Introduction This section explains how to connect PQF cubicles (Master-Slave or Slave- Slave) when they do not come connected from the factory or case or on-site extension. The section starts with mechanical installation.

  • Page 45: Electrical Connections

    PQFA Instructions Manual 7.3. Electrical connections 7.3.1. Connections between cubicles The DC bus of the master and slave cubicles must be connected. Each slave cubicle comes from the factory with two cables connected on the + and - poles of the DC bus.
  • Page 46 Be very careful about the polarity when connecting the DC bus. Start the DC buses interconnection with the last slave and proceed similarly with each cubicle until reaching the Master. An example of DC bus interconnection is given below (PQFA-B+D+C) in Figure 7.2. Control Internal...

  • Page 47: Control Connection

    PQFA Instructions Manual Picture 7.2. Control connection Make sure that the plug-in pattern of the connector and plug is respected. The correspondence between X13 terminals will then be fulfilled as indicated on the electrical wiring diagram. The last cubicle of the chain must contain a bridge between X13.1 and X13.2.

  • Page 48: Earth Connection

    JP100, JP101, JP102, JP103, JP104, JP105, JP106, JP109 and JP110 (JP107 and JP108 are off). An example of domino boards interconnection is given in Figure 7.3 (PQFA- B+D+C). The earth cable of each slave cubicle has to be connected to the earth connection point of the master cubicle.
  • Page 49 PQFA Instructions Manual Internal connection External connection to perform Control Module 4 Module 2 Domino Domino A118 A118 Module 1 Module 3 Module 5 Domino Domino Domino A117 A117 A117 L1 L2 L3 L1 L2 L3 L1 L2 L3 Figure 7.3. Flat cables connection and connections to power supply...

  • Page 50: Pqf-Prog Installation And Pc Connection

    PQFA Instructions Manual 8. PQF-Prog installation and PC connection The PQF-Prog, included in the standard PQFA package, allows for the complete programming of the filter. It consists of two Micro Floppy Disks delivered with the filter. 8.1. System requirements Windows NT 4.0 Service Pack 3 minimum.

  • Page 51: Commissioning

    PQFA Instructions Manual 9. Commissioning The commissioning of your PQFA should be conducted in strict accordance with the following procedure. Warning: Before applying the commissioning procedure, make sure that you become familiar with programming instructions (see chapter 10, programming with PQF -Prog and PQF-Manager).

  • Page 52: Step 3

    PQFA Instructions Manual 9.3. Step 3 Step 3: Current transformer check Improper CT connection is the most frequent cause of problems during commissioning. The following procedure will allow you to check the CT connection. Warning: The secondary circuit of a loaded CT must never be opened otherwise extremely high voltages may appear which can lead to physical danger or destruction of the CT itself.

  • Page 53: Material Needed & Hypotheses For Correct Measurements

    PQFA Instructions Manual It is also seen that terminal X5.1 and X5.2 are related to the CT located in phase L1, terminal X5.3 and X5.4 are related to the CT located in phase L2 and terminal X5.5 and X5.6 are related to the CT located in phase L3.
  • Page 54 PQFA Instructions Manual On the scopemeter screen, two waveforms should appear. The voltage waveform should be approximately a sine wave and the current waveform would normally be a well distorted wave because of harmonic distortion. Usually, it is quite easy to extrapolate the fundamental component as it is the most important one (Figure 9.3).

  • Page 55: Measurement Of Ct In Phase L2 And L3

    PQFA Instructions Manual The same operations as those described in the previous paragraph must be repeated with the phase L2 (Figure 9.5) and phase L3 (Figure 9.6). For a balanced load (which is usually the case in most of the three phase systems), the phase shift should be approximately the same for all the three phases.

  • Page 56: Checking The Correct Connection Of The Cts With Two Current Probes

    PQFA Instructions Manual 9.3.4. Checking the correct connection of the CTs with two current probes. If the main bus bar is available and all security rules are taken, it is possible to use the two channel scope meter in order to see if the current measured through the CT is matching the real current in the bus.

  • Page 57: Step 4

    PQFA Instructions Manual 9.4. Step 4 Step 4: System set-up 9.4.1. With PQF-Prog Once the PQF-Prog software has been successfully installed and your PC is properly connected (see chapter 8), select Programs in the Start menu and click on PQF. If you did not install PQF-Prog in the Program Files directory, create a shortcut to PQF_Prog.exe.

  • Page 58: With The Pqf-Manager

    PQFA Instructions Manual If a wrong or no login is entered, you will only have access to the Login, Filter Operation and Configuration icons. Click on the Hardware set-up icon. In the hardware set-up window, you will have to specify:...

  • Page 59: Step 5

    PQFA Instructions Manual 9.5. Step 5 Step 5: Before switching the filter on Before switching the filter ON, you have to ensure that all harmonics and reactive power compensation have been deselected. This can be done from the ‘ Filter Operation’ menu of the PQF-Prog or level 2 of the PQF-Manager.
  • Page 60 PQFA Instructions Manual Push RUN button Start fan & preload DC bus Close MC Start-up sequence Start IGBT Network characterisation Operation as programmed Figure 9.8. Start-up sequence Asea Brown Boveri Jumet S.A.

  • Page 61: Operation

    (OPEN) of the slave cubicles is on. Master cubicle lights and buttons: RESET LOC/REM CLOSE OPEN Slave cubicles lights: CLOSE OPEN If your PQFA is fitted with the PQF-Manager, the red LED ‘ POWER’ is on. Asea Brown Boveri Jumet S.A.
  • Page 62 PQFA Instructions Manual 4. Push the RUN button located on the master cubicle. RESET LOC/REM CLOSE OPEN 5. The filter then starts the start-up sequence: Start fan and preload DC bus Close main circuit breaker Start IGBT Network characterization During the start-up sequence, the red LED ‘ START-UP’ of the PQF-Manager is on.
  • Page 63 LED n°3 of board A111 on the control rack should be red: it indicates that the PQF is properly synchronized to the network (see illustration next page). 6. After the start-up sequence, the PQFA operates as programmed. The red LED ‘ OK’ of the PQF-Manager should be on.
  • Page 64 PQFA Instructions Manual A111 A112 A113 A119 A114 A115 A116 U100 U109 ±15V DSP GUI ALIM/GND RED LED GREEN LED YELLOW LED 7. Pushing the button RESET of the master cubicle causes the main circuit breaker to open and to come back at step 3 of this procedure.
  • Page 65 PQFA Instructions Manual Switch on auxiliary breaker (Q101) 20sec. Time delay System reset Auxiliaries ON Push RUN button Start fan & preload DC bus Close MC Start-up sequence Start IGBT Network characterisation Operation as programmed Push RESET button Open MC Figure 10.1.

  • Page 66: Operation With Capacitors

    PQFA Instructions Manual 10.2. Operation with capacitors Networks where the PQFA is installed have large harmonic content and it is highly recommended that capacitor banks, if present, be fitted with detuning reactors. In that case, harmonics orders below the tuning frequency of the bank should not be handled by the filter.

  • Page 67: Buttons, Lights And Led' S Signification

    Local – remote switch: local or remote control of the filter. If remote is on, the push buttons are not operational. Lights: ON (white): the PQFA controller is connected to the supply (auxiliary breaker closed) CLOSE (red): the power circuit breaker is closed (filter working)

  • Page 68: Pqf-Manager

    POWER: the controller is connected to the supply (auxiliary breaker closed). START-UP: the PQFA is in the start-up sequence. the PQFA is working properly and fulfilling programmed requirements. FULL LOAD: the filter is working at 100% of its nominal capacity and programmed requirements are not fulfilled.

  • Page 69: Control Rack

    PQFA Instructions Manual 10.4.4. Control rack. Board A111 DIG LED 1 (green) on: OK LED 2 (red) on: malfunction LED 3 (red) on: PQF synchronised on network Board A112 INT LED 1 (green) on: OK LED 2 (red) on: malfunction...

  • Page 70: Programming With Pqf-Prog

    Filtering to curve Reactive compensation In Mode 1, the PQFA will first filter to the pre-programmed curve. Once the requirements are fulfilled, remaining resources will be allocated to reducing the selected harmonics as close as possible to zero. If further resources are then available, reactive power compensation will be performed as required.

  • Page 71: Starting

    PQFA Instructions Manual Before filtering After filtering Filtered current Load current for harmonic Permitted order n residual level Remaining current curve Figure 10.2. Filtering to curve for harmonic order n The programming procedure consists in: 1) Defining the Mode of operation.
  • Page 72 PQFA Instructions Manual If you use the appropriate User name and password, four icons appear on the toolbar: Login, Filter Operation, Hardware set-up and Configuration. Configuration Hardware Login set-up Filter Operation If a wrong or no login is entered, you will only have access to the Login, Filter Operation and Configuration icons.

  • Page 73: Programming The Filter

    The values there entered constitute the curve and the first priority of your PQFA will be to filter harmonics until each selected order becomes lower than its specified target.
  • Page 74 PQFA Instructions Manual Step 5: The filter may be switched on or off from the On/off tab. Asea Brown Boveri Jumet S.A.

  • Page 75: Programming With Pqf-Manager

    Filtering to curve Reactive compensation In Mode 1, the PQFA will first filter to the pre-programmed curve. Once the requirements are fulfilled, remaining resources will be allocated to reducing the selected harmonics as close as possible to zero. If further resources are then available, reactive power compensation will be performed as required.

  • Page 76: Keys Identification

    PQFA Instructions Manual Before filtering After filtering Filtered current Load current for harmonic Permitted order n residual level Remaining current curve Figure 10.3. Filtering to curve for harmonic order n The programming procedure consists in: 1) Defining the Mode of operation.

  • Page 77: Programming The Filter

    PQFA Instructions Manual 10.6.3. Programming the filter. Step 1: The 3 levels of the PQF-Manager are accessible from the window “ Main menu” . To enter the “ Main menu” window, press MENU. Level 1 is for consulting, level 2 for filter programming and level 3 for commissioning.
  • Page 78 PQFA Instructions Manual FILTER MODE MODE FILTERING TO CURVE Q COMPENSATION MAX FILTERING FILTER MODE MODE FILTERING TO CURVE Q COMPENSATION The selected mode only becomes operational once you press the OK button. Step 4: Press on ‘ MENU’ to come back to level 2 main window, select ‘...
  • Page 79 PQFA Instructions Manual HARMONICS CURVE : A ORDER SELECT CURVE Use the ? ? keys to select an order and press ‘ OK’ to activate the corresponding line. Once the line is activated, you may modify the order number by using the DEL button to delete the current value and the numerical keypad of the PQF-Manager to enter the new value.
  • Page 80 PQFA Instructions Manual Q COMPENSATION Q COMP: OFF If ‘ ON’ is selected, you have to specify the type of reactive power compensation: static or dynamic. Use the ? key to make your choice and press ‘ OK’ to validate.

  • Page 81: Pqfa And Network Monitoring With The Pqf-Manager

    PQFA Instructions Manual 10.7. PQFA and network monitoring with the PQF-Manager The 3 levels of the PQF-Manager are accessible from the window “ Main menu” . To enter the “ Main menu” window, press MENU. Level 1 is for consulting, level 2 for filter programming and level 3 for commissioning.

  • Page 82: Network Status

    PQFA Instructions Manual 100% Figure 10.4. Filter Status Window If you press the ? key, you display a second window listing the value of each limiting factor: The percentage of use of the DC voltage capability; The percentage of use of the peak current capability;...

  • Page 83: Waveform

    PQFA Instructions Manual NETWORK STATUS = 396 V = 654 A THDU = 17 % THDI = 74 % Figure 10.5. Network Status It gives you the RMS voltage between L1 and L2, the RMS current in L1 as well as the Total Harmonic Distortion on the same voltage and current.

  • Page 84: Spectrum

    PQFA Instructions Manual -512 Figure 10.6. Waveform Window The graph indicates the unit, the waveform as well as the maximum positive and negative values of the scale. Press MENU and you come back to the Consulting level MENU. 10.7.4. Spectrum In the Consulting level window, select Spectrum and press OK.

  • Page 85: Remote Control And Alarm Contact

    10.8.1. Remote control The PQFA may be switched on and off from a remote location. The remote switch has to be connected to connection points X12-3 and X12-4 of terminal marked X12. In this configuration, applying a voltage to the points X12-3 and X12-4 will switch on the filter.

  • Page 86: Alarm Contact

    PQFA Instructions Manual 10.8.2. Alarm contact The PQFA is fitted with a normally open alarm contact (voltage free contact) allowing remote supervision of the unit. It is open if one of the following conditions is met: The filter is in error condition The filter is off When it is closed the filter is working properly.
  • Page 87 PQFA Instructions Manual 3. When the filter is running, opening of the main incoming circuit breaker when – one of the above named events persists – the breaker detects an overcurrent – the system detects an AC undervoltage – the system desynchronises from the network –...

  • Page 88: Fault Handling And Troubleshooting

    PQFA Instructions Manual 11.Fault handling and troubleshooting 11.1. Fault handling 11.1.1. Type of faults Faults are classified into two basic families: Minor faults Critical faults Immediately after the fault occurrence, the error is cleared. If it has disappeared, the fault is said minor. In the other case, the fault is considered as critical.
  • Page 89 PQFA Instructions Manual The fault clearance procedure starts with the opening of the power circuit breaker. The system is reset and the filter conducts again the start-up sequence as shown hereafter. The fault message can be accessed through the PQF-Manager.
  • Page 90 PQFA Instructions Manual Asea Brown Boveri Jumet S.A.

  • Page 91: Troubleshooting

    ABB service personnel. Below is explained how the error messages can be accessed with the PQF-Manager. If your filter is not fitted with this option, contact your ABB service provider for further support.
  • Page 92 PQFA Instructions Manual Select the filter status submenu with the ? key and press OK. LEVEL 1 ? Filter status? Network status Waveform Spectrum Display the ? key to display the error message. The following table gives an overview of the error messages and codes that can be encountered, the possible causes and the recommended actions.
  • Page 93 CAN bus fault The internal Contact immediately communication bus of your service the PQFA is not working provider. properly. DSP pgm DSP program corrupted Contact immediately corrupted your service provider. Watchdog Software in...
  • Page 94 PQFA Instructions Manual Error Error message Possible causes Actions code Inspect ? 15V power Soft DC DC voltage on DC bus is overvoltage out of normal range supply (U100) (overvoltage) Inspect internal current sensor (B101/102/103) Inspect visually DC voltage divider and...

  • Page 95: Faults Not Related To Error Codes

    Those orders should be deselected. No display on PQF-Manager. Adjust the contrast of the PQF-Manager. Open the front door of the PQFA (main breaker open, auxiliary closed) and adjust the contrast screw located on the back metal plate of the PQF-Manager.
  • Page 96 All dust deposits have to be removed from all parts, especially the heatsink and fan. Indeed,the heatsink picks up dust from the cooling air and The PQFA might run into overtemperature faults if the heatsink is not cleaned regularly. Step 3...
  • Page 97 Step 7 Restart the PQFA according to commissioning procedure. 12.3. Fan The cooling fan lifespan is about 5 years, depending on usage and ambient temperature. Fan failure is often preceeded by increasing noise from the bearings and rise of the heatsink temperature despite cleaning.
  • Page 98 While all care has been taken to ensure that the information contained in this publication is correct, no responsibility can be accepted for any inaccuracy. The Company reserves the right to alter or modify the information contained herein at any time in the light of technical or other developments.

Table of Contents