Service Manual ™ Third edition Copyright © June 1997 Saab Marine Electronics AB
Service Manual The contents, descriptions and specifications within this manual are subject to change without notice. Saab Marine Electronics AB accepts no responsibility for any errors that may appear in this manual. As each Saab TankRadar system is specially designed for each delivery, the contents and illustrations in this manual may differ from your system.
Service Manual Overview of Contents Guide to this manual ............................................................................... 2 1 General Description of Saab TankRadar ...................................... 10 2 General Information....................................................................... 13 3 Work Station................................................................................... 15 4 I/O Box ............................................................................
Service Manual Complete Table of Contents Guide to this manual ............................................................................... 2 Complete service information ........................................................................... 2 Information on how to operate the Saab TankRadar system.......................... 2 Information about technical data of the Saab TankRadar system .................. 2 Abbreviations and Denominations: ...........................................................
Service Manual 3.25 3.26 3.27 3.28 3.29 3.30 3.31 3.32 3.33 3.34 4 I/O Box ............................................................................................. 55 4.1 4.2 4.3 4.4 4.5 5 Level Unit – TX Service ....................................................................... 46 Level Unit – Scan Tank ......................................................................... 47 Level Unit – Restart LCI, LCM ............................................................
Service Manual 5.9 5.10 5.11 6 Transmitters .................................................................................... 74 6.1 6.2 6.3 6.4 6.5 7 Replacing an Electronic Box ................................................................ 75 Transmitter Test Cable ......................................................................... 77 Cleaning the Antenna ........................................................................... 78 6.3.1 Cleaning the Parabolic Antenna .................
Service Manual 9 Fault Finding on the Saab TankRadar System ............................. 88 9.1 9.2 9.3 9.4 9.5 Abbreviations used in the fault finding chart: .......................................... 88 SysFail and Warning Messages Shown on the Work Station ........... 88 9.1.1 SysFail message: Level Unit SysFail. ....................................... 88 9.1.2 SysFail message: Level Unit Communication Failed. ........... 88 9.1.3 SysFail message: Level Unit Power Failure. ........................
Service Manual 9.6 9.7 9.8 9.9 9.10 9.11 9.12 9.13 9.14 9.15 Transmitters .......................................................................................... 95 9.6.1 Ullage indication not updated close to empty tank. ............. 95 Local Display ......................................................................................... 95 9.7.1 Local Display blank .................................................................... 95 Temperature Measurement......................................
Service Manual Abbreviations and Denominations: The following abbreviations are used in this manual: LC LCB LCI LCM LCP LCS LI LIA LIZ LP LU TX WS - Calculation Unit Backup Display Interface Board Processor Memory Board Calculation Unit Power Supply Signal Board Transmitter Interface Analog/Digital/Power Board Zener Barrier Board Power Block Level Unit Transmitter Work Station.
Service Manual 1 General Description of Saab TankRadar Saab TankRadar is made up mainly by the following parts: • • • Transmitters Level Unit Work Station. These units are shown in figure 1-1 below. All Saab TankRadar Marine transmitters are intrinsically safe, providing a number of benefits for the operator. There is a high degree of safety built into the system.
Service Manual The Saab TankRadar system is the main part of the Saab Cargo Control system which includes the following optional features: • • Figure 1-2.
Service Manual 1.1 Radar Principle The radar transmitter on top of the tank emits microwaves directed by an antenna towards the surface of the tank content. The echo from the surface is picked up by the antenna again, and the difference in frequency between the transmitted and the reflected signal is directly proportional to the measured distance, i.e. the ullage indication.
Service Manual 2 General Information Note: If TankRadar system needs to be switched off, check with officer in charge that it is OK to interrupt the operation of the system. 2.1 Safety When connecting equipment in hazardous areas, certain requirements must be fulfilled to provide protection against explosion . There are requirements both for the equipment in the hazardous area on deck and for the associated equipment in non-hazardous area.
Service Manual - Use only a certified battery operated multimeter. Disconnection of live units in hazardous area is allowed. However, when replacing for example an Electronic Box, it is recommended to disconnect its wiring in the safe area (in the Level Unit).
Service Manual 3 Work Station Help Wed Aug 24 20:05:30 1994 Exit all Saab TankRadar Overview Window Trend Group Setup Alarm Cargo System Fore Back CT3 Ullage 5.630 m CT4 Ullage 1.956 m P P P P T=19.1 T=19.1 T=19.1 T=18.7 T=18.7 T=18.7 T=18.7 T=18.6 T=18.6 T=18.6 T=18.6 T.avg 18.8 C T.avg 18.8 C T.avg 18.8 C LC7 LC5 LC3 Hi.Hi CT 6 Ullage 1,837 (2,000) 20 bar 24 bar 26 bar m 2...more T.avg 18.8 C LC1 LC2 LC4 LC6 Exit CT1 Ullage 1.559 m 0.00 m/h T=19.
Service Manual 3.1 Description of the Work Station’s Cabinet Caution: Always turn the Work Station PC off before removing any cables at the back of the PC. Note: On the inside of the Work Station there are parts that are sensitive to static electricity. Be careful not to expose any of the components inside to static electricity. Always ground yourself by using a grounding wrist band or by touching something that is grounded, before touching any of the components inside the Work Station.
Service Manual 5. Connect all connectors (that were previously connected to the master) to the new master Work Station. 6. Start the new master Work Station. 7. Install program according to the instructions in chapter 3.6. During the installation, select this Work Station as the master. 8. Install database according instructions in chapter 3.32. 9. Restart the Work Station by pressing the Reset-button on the front.
Service Manual 3.5 Screen Settings of the Work Station Monitor There are a number of controls below the monitor’s screen. Whenever the picture on the screen looks distorted or incorrect, changing the screen settings may produce a better picture. See maker’s manual (Hewlett-Packard) in the Saab TankRadar G3 manual binder for information on the monitor controls. 3.6 Loading Software to a Work Station Follow the instructions below to install new software onto the hard disk of the Work Station.
Service Manual 3.7 The Service Windows of the Work Station Software A number of the actions in the fault finding section at the end of this manual suggest operations done on the Work Station. The Service functions are protected by passwords.
Service Manual Undo and Save. Any data that is changed in these windows is stored according to the settings in the destination part of the Level Unit-window described below. The Undo-button will change an entry, but only if it has not been saved. Once you press the Save-button you cannot undo the entry (unless you enter the previous value and press save again). 3.8 Level Unit – Version Summary and Database Status This window shows the version and status of the databases and programs in the LCI and LCMs.
Service Manual Note: When setting the Level Unit into one-tank measurement mode, there is no measurement on the other tanks. Select a new tank by hitting the Tank-button or by hitting the up or down arrow keys. The tank number is the internal number in the TankRadar system and is useful when setting the addresses on the optional Tank Display Units, see chapter 8.1. It is also the number that is used when communicating with other systems such as load calculators or ship host computers.
Service Manual • Distance is the distance from a separate ullage plug, included, to the surface of the product in the tank. It is the ullage plus the A-distance and is T/L-corrected. • Filter center is the location of the center of the measuring filter during the last sweep. This value is normally very close to the ullage value. It can differ when the surface is close to the bottom of the tank or close to a disturbing echo. • Time stamp is a counter that shows that the transmitter is operating.
Service Manual • TX ID switch on is checked when the button on the Service Display is pressed or when positions 4 and 30 on WT500 on the transmitter has been jumpered. • Corr plug inval is checked when the trim and list correction of the ullage cannot be done or when the calculation produces erroneous results. This holds true for the Corr cog inval as well.
Service Manual • • • • • • • • • The A- and B-distances are explained in the Installation Manual. The Beam 1-4 distances are used to filter out any disturbing echoes in the tank, where Beam 1 is the lowest in the tank. These values are programmed by a Saab service engineer during the commissioning of the system. They should not be changed.
Service Manual • • reference point. There is no need to enter a value here if TX type is selected as 1 or 2. The Local Display Mode indicates which data the Local Display should show. - 0 switches the display off, - 1 makes it show ullage continuously. - 2 makes it toggle between ullage, average temperature and inert gas pressure. - 3 sets the display to show a value sent from the Work Station. This feature is programmed prior to delivery of the system.
Service Manual 3.10 Level Unit – Temperature Data The Temperature Data-window shows the dynamic data and the database values for the temperature measurement. Select a new tank by hitting the Tank-button or by hitting the up or down arrow keys. The dynamic data box shows: • Int temp. The internal temperature measured by a sensor inside the Transmitter is displayed. • Temp avg. The average temperature calculated as the average of the values from the sensors that are immersed in the liquid.
Service Manual • Temp 1, 2 or 3 in liq. This box is checked when this temperature sensor is immersed in the liquid, when it has stabilized and when the ullage value is valid. The following database data are shown and can be changed: • L3, L2 or L1 type/range. This value shows if it is a three-wire or four-wire type sensor that is used. The temperature range is also defined by this value. The following values can be shown: • 0 for no connected temperature sensor.
Service Manual 3.11 Level Unit – IG Pressure Data The IG Pressure Data-window shows the dynamic data and the database values for the IG pressure measurement. Select a new tank by hitting the Tank-button or by hitting the up or down arrow keys. The dynamic data box shows: • Pressure. The measured pressure. The status boxes show: • TX comfail indicates that the transmitter is not communicating. This produces an alarm on the alarm row. • Press sens fail. The sensor is faulty.
Service Manual 3.12 Level Unit – Extra Sensor Data The Extra Sensor Data-window shows the dynamic data and the database values for the two extra temperature sensors that can be connected to each transmitter. Select a new tank by hitting the Tank-button or by hitting the up or down arrow keys. The dynamic data box shows: • Sensor 4 and 5. The temperature measured by the sensors are displayed in 1/10 of degrees.
Service Manual 3.13 Level Unit – Trim/List Data The Trim/List Data-window shows the measured trim and list angles. They are displayed as 1/100 of degrees. The source of the trim and list values are shown in the Ship measures-window in the Configure-part of the software. Open the Ship measures-window by hitting the Window-key and selecting Configure. Then hit the Picture-button and select Calculation and Ship data. The dynamic data box is divided into three parts for LCI, LCM 1 and LCM 2.
Service Manual • LU Orient. This shows in which direction the Level Unit cabinet has been placed on board. 0 - front of LU faces to port. 1 - front of LU faces starboard. 2 - front of LU faces fore 3 - front of LU faces aft. Any changes of the database values must be followed by hitting the Save-button. 3.14 Level Unit – LCM 1 and 2 Status Use these windows to check the status of the Processor Memory Board, LCM. As there can be one or two LCM, there are two windows: LCM 1 Status and LCM 2 Status.
Service Manual • Test running. The LCM asks the LCS for a test signal which is processed and compared with an expected test result. It should show 14949±10 when it is OK. If it is not OK, there will be a LCS failure alarm. • Sweep counter. The sweep counter indicates that the LCM is working. It count ordered sweeps. Check that the sweep counter is counting to see that the board is operating. Check also the Sweep error LCM-status box in the LCI Status-window described below. • Schedule status.
Service Manual moving surfaces are measured more often. This function can be useful if there are many tanks, and some of them have large level rates when loading or discharging. 3.15 Level Unit – LCI Status This window shows the status of the LCI. If you suspect that there is some problem with an LCM, this window provides some good information. The following information is shown in this window: • Wdog reset cnt.
Service Manual • Sweep err LCM 1 or 2. This is an indication that the LCM is not measuring normally. The sweep counter on the LCM is supervised. If there is no change in 10 seconds this box becomes checked. See also chapter 3.14. A message will be displayed “Level Unit restarted”. The Active LCM box shows which LCM that is being used. In case there are two LCMs configured in the redundancy mode, this box indicates which of the LCMs that is in use.
Service Manual 3.16 Level Unit – LI Status This window shows the individual status of up to four Transmitter Interfaces (LI). This window is useful when you are looking for a ground failure. It is easy to detect which Transmitter Interface (LI) that has ground failure. See also chapter 9.1.6 and 9.14. The status boxes show: • LI +15V fail and LI -15V fail show if there is any problem with the power supply to the LIs. If any of these are checked, check the Power Block. See chapter 9.1.3. • LI ground fail.
Service Manual 3.17 Level Unit – Backup and Local Display This window is used only when special units and special scalings have been programmed into the system at factory before delivery. A better way to change presentation units and change presentation of trim/list correction is in the Setup-window, opened from the Work Station’s base window. See Operating Manual for more information.
Service Manual 1 = Correction to the tank’s reference point (Plug) 2 = Correction to the tank’s center of gravity (COG) It is also possible to use two sets (1 or 2) of customized units for each parameter. These can be scaled from the raw data into the new units using the scale constants A, B and C. The scaling is done according to the formula: data (in custom units) = (raw data * A) / B + C. You can also set the number of decimals to be presented on the displays.
Service Manual 3.18 Level Unit – LCI Com Ports Communication port 1 is usually used for the communication with the Work Station and port 2 is used for a Service PC. If there is any problem with the communication between the Level Unit and the Work Station, check that the values are: Protocol Baud Databits Stopbits Parity = = = = = 0 19200 bps 8 bits 1 bit 110 (where 110=none, 111=odd and 101=even).
Service Manual 3.19 Level Unit – Relays In the status box in this window the status of the relays in the Power Block of the Level Unit are shown. These will show the same status as the Sysfail and Power fail in the LCI status window described in chapter 3.15. The External pressure alarm relay will be activated when the this alarm is active. See chapter 3.11 for more information. Note: The Sysfail and Power fail relays are normally on.
Service Manual 3.20 Level Unit – Work Station Communication This window shows the load on the communication between the Work Station and the Level Unit. It also shows if the communication is working by counting the number of transactions and responses. You can reset these counters by hitting the Reset counters-button. Note: If there is no communication at all the pointer instrument will show 100 % load. The pointer instrument measures the free capacity on the communication.
Service Manual 3.21 Level Unit – Any Register In this window you can view any of the registers in the LCMs or the LCI. There are two types of registers, the dynamic registers and the database registers. There are four buttons to select LCI or LCM and to select dynamic or database registers. Hit one of these buttons. The normally used registers are shown in the windows described in this chapter 3.
Service Manual Database registers can be changed. Type in a new value and hit the Save-button. Note: You must be sure that you are changing the correct register, as many of the registers lack a descriptor. A list of a few of the database registers of the LCI is included below: Reg no.
Service Manual 3.22 Level Unit – LCI, LCM Version In this window you can see the version of the programs in the LCI and LCMs. You can also see if one or two LCMs are used. This information can be useful if you need to contact Saab Marine Electronics or a service agent.
Service Manual 3.23 Level Unit – Load Program Hit the Service-button to open this window. This window can be used to load new programs into the LCMs and LCI. The new program can be downloaded from a diskette. Note: Make sure the new program is compatible with the Work Station software. If unsure, please contact Saab Marine Electronics for advice. Insert the diskette with the program into the diskette drive of the Work Station.
Service Manual 3.24 Level Unit – Up/Download Database Hit the Service-button to open this window. Use this window to copy database from one memory to another. It is possible to download database from the Work Station to the LCMs and the LCI. It is also possible to upload database from these boards to the Work Station. This window is useful when you have replaced either an LCM, LCI or a hard disk in the Work Station.
Service Manual 3.25 Level Unit – TX Service The test functions for TX simulation and LCS simulation can be used if a tank has the TX Failure check box marked. When setting the signal source to TX Simulation, a tank signal will be sent from the Transmitter to the Level Unit. The LCS Simulation generates a signal from within the Level Unit.
Service Manual If not even LCS Simulation gives a “distance”, the reason for fault is likely to be located on the LCS Board. 3.26 Level Unit – Scan Tank The scan tank function is used when there is a need to view the radar echoes inside the tank. This function is used during the commissioning of the system. A Saab service engineer will use this window to measure and save a curve of the signal strength throughout the tank.
Service Manual 3.28 Level Unit – IG Press Zero Adjust Select this window when the IG pressure sensors need to be adjusted. Select the tank that needs to be adjusted. Note: When the IG pressure sensor is adjusted for zero pressure it is very important that the pressure inside the tank is equal to the pressure outside the tank. The tank must be opened. See also chapter 6.4. Permission from officer in charge must be obtained before the tank is opened.
Service Manual 3.29 Disconnect LU Use this function when there is a need to change the LUdatabase in the Work Station when there is no communication with the Level Unit. When you select Disconnect LU on the Service Menu, the question “Continue without communication with Level Unit? OK or Cancel” will be displayed. 3.30 The Communication-Window Select Communication from the Service-menu to open the Communication-window. This window shows the communication on the serial ports to the I/O Box.
Service Manual The RS-485 Interface Board can be set to half or full duplex, using jumpers. In this window it is easy to check the setting of the jumpers. See chapters 9.4 and 4.3. Hit the Communication Log-button and select the communication you want to view. The Communication Log-window shows the communication parameters as well as the messages that are communicated. You can disregard the information in the Mode-box.
Service Manual The value for digital inputs or outputs is shown as either 0 or 1. For digital outputs, it is possible to change the value and hit the Save-button to see that the output is working. Sometimes detection of the output is easier if the Blink selection is set to 1. The output (for example relay) will change back and forth between active and inactive. The value for analog inputs or outputs is shown in unscaled units. The maximum and minimum values for the terminal are shown and cannot be changed.
Service Manual 4. Select Backup All. A message is displayed on the screen and the files are copied onto the diskette. Follow any instructions on the screen. 3.32.2 Install Database and Pictures Follow the instructions below if you need to install new or backup copies of pictures and/or database on the Work Station. If you are uncertain of which files are stored on the diskette, hit the View-button to view the files on the diskette.
Service Manual 3. 4. 5. 3.33 Select “Backup one file”. Select the log file you want to save. Its name has an extension “.log”. These are normally placed in the directory acu/tmp. Order the copying to start. Service Log-Window Select Service Log from the Service-menu to open the Service Log-window. It is used when there is a need to store measured data for a later analysis. The log software regularly stores time, channel status and channel value into a log file. The log file is named “dl- .
Service Manual AMP Active A √-sign indicates that the the AMP channel for echo amplitude exists. Check the box to create AMP channels if they are not active, then restart the Work Station. Log running Indicates that the log is running. Log stopped Indicates that the log is not running. Start/Stop Use this button to start or stop the log. Save Setup and Restart Log Use this button to save the changes and restart the log.
Service Manual 4 I/O Box The I/O box is used to interface various equipment to the Work Station including the Level Unit. The I/O Box is made up of a motherboard with power supply, relays and connectors for seven Interface Boards. Figure 4-1 shows the I/O Box. The I/O Box is connected either to an 8-channel serial interface board in the Work Station or to the Com 1 and Com 2 ports. One of these channels is used for watch dog and relay output control.
Service Manual 4.1 The Motherboard of the I/O Box The motherboard in the I/O Box contains a power supply, a communication watch dog with System Failure output, seven relay outputs and seven slots for plug in of various Interface Boards. The seven serial channels are directly wired to the seven connectors for the Interface Boards. 4.1.1 Watch Dog LED There is a red LED (H4) on the motherboard indicating that there has been an interruption of the communication with the Work Station.
Service Manual 4.1.2 Communication LEDs A green LED (H2) indicates received data and a yellow LED (H3) indicates transmitted data. Received data is echoed back to the source. 4.1.3 Power LED The voltages on the motherboard are monitored and are indicated by a green LED (H1). 4.1.4 Relays There are eight relays for alarms and general output signals in the I/O Box. One of them is a System Failure relay controlled by the Work Station.
Service Manual Half duplex two-wire transmission S1-S4:1-2. Full duplex four wire transmission S1-S4:2-3. The connection of the Level Unit and LevelDatic system requires half duplex, while the Tank Display Units require full duplex. Note: When trouble shooting you might need to exchange two RS 485 Interface Boards. Remember to check the setting of the jumpers for correct transmission. A 485-bus for a LevelDatic system with more than one module may use an unterminated board depending upon its location.
Service Manual 5 Level Unit 5.1 Description of the Level Unit The Level Unit contains terminals for the intrinsically safe connection of the Transmitters. It contains the electronics used for processing the signals from the Transmitters, for calculating tank parameters, such as trim/list corrected ullage, and for communicating with the Work Station. The Level Unit is a cabinet with mainly three different parts.
Service Manual 5.2 Information Flow within the Level Unit The signals from a Transmitter enter the Level Unit into a Transmitter Interface (LI) where they pass the zener barriers and go on to the Signal Board (LCS). The components on the Signal Board amplify and process the signals. The signals are converted to digital form by the Signal Board and are sent to the Processor Memory Board (LCM), where the signals are digitally processed.
Service Manual 5.3 Restarting the Level Unit 1. 2. 3. 4. 5. 5.4 Check with officer in charge that it is OK to restart the system. A restart means there may be no information for a few minutes. Open the front door of the Level Unit. Switch the power off by setting the power switch on the Power Block to position 0. Wait until the red LED on the Calculation Unit’s power supply goes off. Set the power switch to position 1 and the system will start up again.
Service Manual 5.5 Signal Board, LCS The Signal Board contains analog filters and an A/D converter for the analog signal from the Transmitters. 2 5.5.1 Replacing a LCS Note: In order to avoid ESD-damages (electrostatic discharge), do not touch the components or the pins in the connector at the back of the board. 1. 2. 3. 3 2 Figure 5-4. Removing a board. 4. 5. 5.6 Switch the power off before starting this operation. Remove the two screws on the front panel of the board.
Service Manual 5.7 Interface Board, LCI The Interface Board works as an interface between the Processor Memory Board and the Work Station. It also supports the Backup Display with its keyboard. If a service PC is connected, it communicates via this board. The Interface Board has five LEDs on the front panel. The first LED from the top indicates the transmitted communication with the Work Station, normally through the RS 485 Interface Board in the I/O Box (position Com 4).
Service Manual 5.7.2 Replacing the LCI Note: In order to avoid ESD-damages (electrostatic discharge), do not touch the components or the pins in the connector at the back of the board. 1. 2. 3. 4. 5. 6. 7. 8. 9. Switch the power off before starting this operation. Remove the two screws on the front panel of the board. Remove the four screws of the Backup Display. Push the knob down to loosen the connector at the back of the board. See figure 5-4.
Service Manual 5.8 Trim/List Unit, LT A unit with inclinometers for measuring trim and list is integrated in the Level Unit cabinet. These trim and list values are used to support the radar echo detection process that finds the true ullage. These values can also be used for ullage correction if there are no better source of trim and list values available. The trim an list values are used in the LCM or LCMs to calculate trim/list corrected ullages.
Service Manual 5.8.2 Adjusting the Trim/List Unit 1. Measure the trim and list angles of the ship. A ship´s trim is the difference between the draft forward and draft aft. The trim-angle is defined as β in the figure. tan β = DA - D F L where: DA = draft aft, DF = draft fore, L= Length between scales. Note: Aft trim is positive and forward trim is negative. The list angle can be established by hand dipping towards the water surface from port and starboard rails.
Service Manual 2. 3. 4. 5. Switch the Level Unit on and read the trim and list values on the Backup Display. Press the System-key and select “1 TrimList” to see the values from source selected in Configure/Calculate/Shipdata. Check trim and list values on a Work Station as well. The Trim/List Unit can be adjusted in two different directions. To adjust it sideways, loosen the bottom locking nut and swing it sideways.
Service Manual 5.9 Backup Display, LCB The Backup Display serves only as a backup for the Work Station, for displaying the measured values and contents of the memory registers in the Transmitters, Processor Memory Board and the Interface Board. 7 8 9 4 5 6 1 2 3 0 ALARM SYSTEM MENU SERV ENTER CLEAR Figure 5-8 shows the Backup Display with its keyboard. The display can show each tank with its tank name and relevant tank values. The display can also show other status in the Level Unit.
Service Manual Note: The level and level rate always based on the same unit. If one of them is changed, the other changes as well. Temp: Press: 5.9.4 0 1 0 1 = = = = degrees Celsius degrees Fahrenheit mbar PSI (pounds per square inch) Local Display Frame Select Disp to change the display mode of the Local Display. Each tank can have its own display mode. Enter a digit from 0 to 3 to change the display mode. Mode: 5.9.
Service Manual 5.9.7 Amplitude Frame This frame is used for viewing the amplitude of the tank signal. The frame shows three amplitude values at a time. Transmitter Interface, LI The Transmitter Interfaces provide intrinsically safe power to the Transmitters, temperature sensors, IG pressure measurement and Local Displays on deck. STBD 5 CENT 5 STBD 4 CENT 4 PORT 4 4 5.10.1 Cabling STBD 2 PORT 2 The cables from the Transmitters are connected to the Transmitter Interfaces in the Level Unit.
Service Manual One Transmitter Interface is connected to the Calculation Unit at the top of the Level Unit, while the other Transmitter Interfaces are connected in serial with a flat cable between each one. 5.10.3 Power supply to the Transmitter Interface The intrinsically safe parts of the Transmitter Interfaces receive power from the Power Block at the bottom of the Level Unit via separate cables. The non-intrinsically safe parts receive their power from the Calculation Unit power supply. 5.10.
Service Manual - relays the digital signals between the Transmitter and the Processor Memory Board and stabilizes the intrinsically safe power supply and checks for ground failure. 5.10.7 The Zener Barrier Board (LIZ) The Zener Barrier Board has five separate circuits for the intrinsically safe connection of up to five Transmitters. Each of the five separate circuits on the Zener Barrier Board contain four zener barriers.
Service Manual 5.10.10 Replacing a Transmitter Interface (LI) 1. If it is a completely new LI, set address switch on the new LI to same positions as on the replaced LI. See also chapter 5.10.5. Mark up the connectors on the new LI in the same way as the replaced LI. 2. Mount the new LI and tighten the four nuts. 3. Fit connectors for Transmitters, power and flat cable. 5.
Service Manual on the label on the front of the Power Block since the switch is located inside it. Mount the new Power Block. Tighten the four nuts. Replace the cable connectors. 5. 6. 6 Transmitters There are two types of Transmitters with different antennas available with the Saab TankRadar: • Parabolic Antenna Transmitter • Cone Antenna Transmitter. The Transmitters are prepared for inert gas pressure measurement, Local Display, and connection of up to five Pt 100 sensors.
Service Manual Electronic Box IG pressure sensor (option) Cable inlet Protective hose (option) Insulation Stainless steel cone antenna Figure 6-2. Cross-cut of the Cone Antenna. perature Connection Box may be deck mounted or pump mounted. There is a wire terminal within the transmitter housing used for connection of the optional sensors, the Local Display and the cables to the Level Unit. The electronics for the Transmitter are intrinsically safe and are placed in the Electronic Box.
Service Manual Note: Make sure the interior of the transmitter housing is completely dry and clean before replacing the cover. Encased water or damp cause corrosion of the terminal block and wire leads causing contact fault. Wipe with a clean and dry cloth if necessary. Follow the steps below when removing the Electronic Box: 1. 2. 3. 4. 5. 6. 7. 8. Parabolic Antenna: Open the transmitter housing by removing the eight bolts for the cover.
Service Manual 6.2 Transmitter Test Cable In the spare parts set on board there is a Transmitter Test Cable. Use this cable to check the function of the Electronic Box of the Transmitter. There is a distance printed on the Test Cable. It will differ from the ullage shown by TankRadar when the Test Cable is applied on the Transmitter.
Service Manual Check that the amplitude is within the shaded area according to figure 6-3. If it is not, exchange with new Electronic Box. 6.3 Cleaning the Antenna The only regular maintenance required is cleaning of the transmitter antenna. No general intervals can be stated, as cleaning intervals depend on the carried cargo. There is an automatic test function in TankRadar, indicating when antenna cleaning is required.
Service Manual 6. 7. Clean both sides of the antenna feeder in the same way. Remove the brush and the Teflon adapter, and replace the cleaning hole plug. 6.3.3 Cleaning by Hand Before cleaning, the inert gas pressure must be reduced. Also observe local environmental, safety and health regulations. 1. 2. Open the cleaning hatch. Clean the antenna feeder and the parabolic reflector with a rag. If necessary, use a suitable solvent. 6.3.
Service Manual 6.4 Inert Gas Pressure Sensor (Option) IG Pressure Sensor in Parabolic Antenna Transmitter IG Pressure Sensor in Cone Antenna Transmitter Figure 6-6. The IG pressure sensor in the Parabolic and the Cone Antennas. WARNING! Closed tank condition can not be maintained when removing the gas pressure sensor. The tank atmosphere is exposed to deck environment. The IG-pressure sensor must not be removed without permission from officer in charge.
Service Manual Note: The sensor must be fitted to the vent hole by means of a Nylon hose. Note: Make a note of how the leads are connected to the wire terminal on the Electronic Box before you disconnect the leads. 6.4.1 Cleaning the Inert Gas Pressure Sensor Follow the steps below when cleaning the IG pressure sensor: 1. 2. 3. 4. Open the cover to the transmitter housing. Disconnect the leads to the IG-sensor and remove the sensor. Remove the sensor and the nipple.
Service Manual 6.5 Dismounting of Antenna Feeder of the Parabolic Antenna The antenna feeder is mounted in the centre of the trunk and its upper part is engaged in the Electronic Box. Replacement can be carried out when the system is operating. Important! - + + - SB FORE NOTE ! Figure 6-7. + - SB FORE Figure 6-8. Figure 6-9. Figure 6-10. - + When removing the antenna feeder the tank must be opened. Permission from officer in charge must be obtained before the service work commences. 6.5.
Service Manual pattern with a dynamometric wrench. Then check the antenna feeder position once again. Readjust if necessary. The gasket settles down, so tighten the nuts to the torque shown above, again after two hours. 6. Install the Electronic Box. Note: Before replacing the transmitter cover, make sure the interior of transmitter housing is completely dry and clean. Encased water or damp cause corrosion of the terminal block and wire leads causing contact fault.
Service Manual When checking the resistance of a Pt 100 sensor, observe the additional resistance of the connecting leads, which can be either in a 3-wire or 4-wire configuration. Note: For service of temperature sensors, strictly observe the safety regulations for intrinsic safety, see chapter 2.1. white* (Only on 4-wire sensor) white* R Pt 100 A red* Use a certified battery operated multipurpose instrument to check the resistance of the Pt 100 element.
Service Manual 7.2 Replacing a Faulty Temperature Sensor To replace a faulty Pt 100 element, proceed as follows: 1. 2. 3. 4. 5. Cap nut Metal packing Adapter nipple 6. Remove the cover of the Temperature Connection Box. Loosen the cap nut completely. Loosen the adapter nipple using the box spanner from the spare parts set. Pull out the temperature sensor completely. Insert a new temperature sensor completely. If it is not entered completely the cover will not fit.
Service Manual 8 Tank Display Unit (Option) Press to display tank level with one LED point on the bargraph. Press again to change back to bargraph mode. % 100 Hi.Hi alarm indication 80 Hi alarm indication Bargraph indicates percentage of full tank 60 Press to display Hi alarm limit on the numeric LED display. If the Hi alarm is blocked, the display shows "99.99". 40 20 Press to display Lo alarm limit on the numeric LED display. If the Lo alarm is blocked, the display shows "99.99".
Service Manual 8.2 Checking the Tank Display Power Supply Unit The Fl, F2 and F3 fuses (ratings 250 V/4 A) are located on a separate fuse panel. 1. 2. 3. Loosen the four screws to remove the cover. Check if the fuses are intact. Replace if necessary. Also, reset the circuit breaker next to the transductor by pressing the reset button between the side panel of the unit and the interior vertical panel. Replace the cover and tighten the bolts. F1 F2 F3 RESET Figure 8-3.
Service Manual 9 Fault Finding on the Saab TankRadar System Whenever there are symptoms in the system that may indicate that there is some failure, please start the fault finding by looking at the following pages. Look for a similar symptom as the one your TankRadar system is having, and then look for the cause and the action to take in order to fix the failure. The symptoms are printed to the far left in bold text. On the line below is one or more descriptions of what is possibly causing the symptoms.
Service Manual 9.1.3 9.1.4 9.1.5 9.1.6 Contact fault between Work Station and I/O Box or between I/O Box and Level Unit. • Check cable and connectors. Serial port Com 1 or Serial Interface Board in Work Station faulty. • Check Service window “Communication I/O Box” on Work Station. See chapter 3.30. The RS 485 Interface Board in location Com 4 in I/O Box faulty. • Check that LEDs in I/O Box are flashing, see chapter 4. Interface Board (LCI) in Level Unit faulty. • See chapter 5.7.
Service Manual 9.1.7 Warning message: Level Unit Memory Failure. LCM Board faulty. • Restart Level Unit and check Service-window LCM Status on Work Station. If box “DF database loaded” is checked, memory in LCM Board is not working and LCM Board needs to be replaced. See chapter 3.14 and 5.6.1. • In Service-window LCI Status, check LCM status, see chapter 3.15. If LCM is faulty, replace LCM board. 9.1.8 Warning message: Level Unit Restarted.
Service Manual 9.1.11 Warning message: SIOX Communication Failed. Communication cables faulty from the I/O Box to the SIOX equipment. • Check cables between SIOX and I/O Box. Mains power supply failing to SIOX (Mains to box or 24 VDC to each SIOX module). • Check power supply, cables and fuses. I/O Box failure. • See chapter 9.1.5. Single SIOX module failing • Check LEDs on each SIOX module. See chapter 4.4. SIOX Interface Board in I/O Box faulty.
Service Manual If there are more Slave Work Stations, check for any messages on these. • If only one slave Work Station has the message “NO CONTACT WITH MASTER WORK STATION”, concentrate your fault finding on this Work Station. • If all Slave Work Stations have the message displayed, check Master Work Station, the network cables or the Network Board in the Master Work Station. If Master Work Station is turned on and running without any problems: • Check cables between the Master and Slave Work Station.
Service Manual 9.3.4 9.3.5 9.3.6 9.3.7 9.3.8 9.4 9.4.1 Warning “Clean antenna on tank XXX” If the signal strength is reduced due to a thick layer of cargo or other contamination on the antenna, this warning will be displayed. • Clean antenna. See chapter 6.3 for cleaning of the antennas. All warnings associated with one tank shown on Work Station If warnings about communication failure, error etc. are shown for a single tank, the cabling might be broken.
Service Manual 9.4.2 9.4.3 9.4.4 9.5 9.5.1 9.5.2 9.5.3 9.5.4 Work Station monitor image located incorrectly, distorted or discolored. Static field distorting the image. • Press the degauss-switch, see chapter 3.5. Image settings incorrect. • Adjust image settings, see chapter 3.5. Some object is disturbing the magnetic field controlling the image. • Check for any large metal object, radio transmitter, magnet or transformer placed close to the monitor.
Service Manual 9.6 9.6.1 9.7 9.7.1 9.8 9.8.1 9.9 9.9.1 Transmitters Ullage indication not updated close to empty tank. Too weak radar echo due to inclined bottom or sludge on tank bottom. • Ullage indication will be resumed when the tank is loaded again. Local Display Local Display blank Setting of display mode may be incorrect. • Check setting either on Backup Display in Level Unit, see chapter 5.9.4, or from the Transmitter Data-window in the Service part of the Work Station, see chapter 3.9.
Service Manual 9.9.2 9.10 Indicated inert gas pressure always the same IG pressure sensor’s opening to the tank may be clogged. • Clean the sensor’s opening to the tank. See chapter 6.4. IG pressure sensor faulty. • Replace sensor, see chapter 6.4. Tank Display Unit 9.10.1 Display on TDU not working. No voltage supply • Check fuses in TDU-Power Supply. See chapter 8.2. • Check power cables and DC distribution to TDUs. Communication failure • Check communication cables • Check I/O Box.
Service Manual 9.12 Draft measurement 9.12.1 Draft measurement incorrect Failure on LevelDatic equipment • Check LevelDatic equipment. See separate documentation in "Asbuilt drawings and user's manual"-binder. Incorrectly configured data for draft measurement. • Check that configured ship data in Ship measures-window on Work Station correspond to real distances on ship. Faulty communication with LevelDatic equipment. • See chapter 9.1.10. 9.13 Load Calculator 9.13.
Service Manual 9.14 Finding Cause of Ground Failure Warning When the warning message “Level Unit Ground Failure” is displayed on the Work Station or when the ground failure LED on a Transmitter Interface in the Level Unit lights up, there is a need to find the cause of the ground failure.
Service Manual 7. 8. 9. If there is no ground failure on the cable between the Transmitter and the temperature wire terminal, you need to check each individual temperature sensor. Remove the wires to the temperature sensor from the terminal inside the Temperature Connection Box. Measure the resistance between each wire and ground to find which temperature sensor is causing the ground failure.
Service Manual 17. 18. If the resistance measured in step 16 is less than 10 MΩ, check the cable between the Transmitter and the Local Display according to the steps in chapter 9.14.8 below. If the Local Display is causing the ground failure, try cleaning and drying the inside of the display. If this does not help replace the Local Display. 9.14.7 Ground Failure – Wire Terminals 19. If you have come this far in your search for the ground failure, check the wire terminals. See chapter 9.14.9. 9.14.
Service Manual 9.15 Comparing Ullages The best reference point for ullage measurement is the ullage plug on the flange of the transmitter housing if the Parabolic Antenna is used. When measuring on the Cone Antenna, the Waveguide Cone has to be removed. See instructions in chapter 6.3.4. Hand dip from the top of the edge of the cone. Reduce the hand dipped measure with 555 mm. The 555 mm includes the length of the cone and the thickness of the gasket (approximately 4 mm).
Service Manual There are three different ways in which the TankRadar can be configured as far as hand dipping and trim/list corrections are concerned. Depending on the configuration please follow the appropriate steps below when comparing ullages. It is important to know which reference point the system uses for correction. See the Setup-window on the Work Station. If the TankRadar ullage plug is the only reference then proceed as follows to compare ullages: 1.
Service Manual 10 Spare Parts 10.1 Standard Spare Parts Set, 9150065-981 Part no. 9150065-615 9150020-891 9150020-893 9150021-048 0980240-002 0990117-014 0990117-011 0990117-020 0980240-002 10.2 Extended Spare Parts Set, 9150065-982 Part no. 9150065-981 9150064-871 6853489-420 10.
Service Manual 11 Recycling of Saab TankRadar At a point in time when your TankRadar system has served you well for many years and it is time to scrap the ship, we at Saab Marine Electronics are more than willing to help you with the recycling of the TankRadar system. At our factory, we are able to sort out the various parts of the system that are possible to recycle. Saab Marine Electronics will see to it that your TankRadar system does not burden our environment when the ship is scrapped.
Service Manual 12 Saab Marine Service Agents Australia NovaMarine Instruments Pty. Ltd. Tel +61-49-69 44 77 Fax +61-49-62 12 10 Italy Wilson Walton Int Spa Italiana Tel +39-10-613 61 11 Fax +39-10-613 63 79 Brazil Unitec Engenharia Ltda. Tel +55-21-254 97 41, 204 05 36 Fax +55-21-264 71 62 Japan Tokimec Inc.
Service Manual Spain Aries Industrial y Naval S A Tel +34-1-533 92 00 Fax +34-1-554 95 94 Sweden Saab Marine Electronics AB Tel +46-31-37 03 35 Fax +46-31-25 30 22 The Netherlands ASEA Brown Boweri Tel +31-10-407 88 67 Fax +31-10-456 86 87 United Arab Emirates Maritronics Tel +971-4-34 22 11, 34 25 11 Fax +971-4-34 26 62 USA Saab Tank Control Tel +1-713-722 9199 Fax +1-713-722 9115 USA/West Coast Aspen Controls Inc Tel +1-310-595 75 45 Fax +1-310-426 91 33 USA/East Coast C A M Co.
Service Manual Index A A/D converter ............................................ 63 Address Transmitter Interface ............................ 72 Adjustment scales ...................................... 83 Alarm handling .......................................... 11 Amp_post_filt register .............................. 78 Amplitude ................................................... 79 Amplitude Frame ...................................... 71 Amplitude postfilt .....................................
Service Manual Ground Failure .................................... 100 Replacing ................................................ 82 Zero pressure calibration ..................... 82 Information flow ........................................ 61 Install database on Work Station ............. 18 Install pictures on Work Station .............. 18 Install Program on Work Station ............. 18 Install Work Station program ................... 52 Install/Backup-Window ...........................
Service Manual Registers, viewing ...................................... 41 Relays ................................................... 55, 74 Relays in I/O Box ...................................... 57 Relays in Level Unit .................................. 57 Relays-window .......................................... 39 Replacing a LIA .......................................... 73 Replacing a LIZ .......................................... 73 Restart LCI, LCM .......................................
Service Manual Replacing ................................................ 16 Replacing a board ................................. 17 Screen settings ....................................... 18 Service software .................................... 19 Sysfail and Warning Messages ............ 89 Work Station Communication-window . 40 Work Station screen ................................... 94 Z Zener Barrier Board ............................ 71, 73 Zero Pressure Calibration .........................
