PLC temporary lock User Manual preliminary
Contents
1. rail system after warm up of the detector 0 Comment See section 3 5 1 See section 3 5 2 See section 3 5 3 See section 3 5 4 See section 3 5 5 See section 3 5 6 See section 3 5 7 See section 3 5 8 See section 3 5 9 See section 3 5 10 See section 3 5 11 11 Table 3 3 Overview of the functions and motor programs The outer circle in the string selector display will change from light to dark blue until the target position is reached The current position of the string is displayed in the position display 1 and the arrow 8 indicates the direction of the movement of the string As soon as the target position is reached the outer circle of the string selector and the arrow 8 will stop blinking In the following sections the motor programs and their usage are explained in detail IMPORTANT The automatic button 4 in Fig 3 4 ensures that the sequence of motor movements defined in a motor program is carried out without interruption If this button is not activated the PLC stops after the first sequence The motor program will NOT CONTINUE In this case a different motor program has to be chosen with the preset value identical to the real value In case the position of the motor is at a position which does not coincide with any precondition of the desired motor program use the Jog up down programs which are discribed in section 3 5 13 3 5 The motor programs In principle all motor programs have a syntax which consists2. 3 Move Detectors 3 1 Main screen Detector Movement To access the main screen for detector movement you must click on the move detectors button The main move detector screen is shown in figure 3 1 It displays all relevant information required to move detectors and to enable shutter movement The display shows the position of the shutters open close and illustrates the position of the strings with blue bars A high voltage sign also appears when high voltage can be applied to the detectors Measurement going on At the lower right corner there are four menu buttons Table 3 1 gives an overview about their functions SIEMENS SIMATIC PANEL H NOL choose control move idetectors A shutters motors motors Fig 3 1 The Main screen Detector Movement Button Function Comment Arrow up Back to PLC Main screen Shutters Enable disable shutters For details refer to section 3 2 Choose motors Select a motor For details refer to section 3 3 Control motors Select a motor program and move a string For details refer to section 3 4 Table 3 1 Overview of the menu buttons on the Main screen Detector movement 3 2 Shutter menu Depending on your state of operation you may be able to open and close shutters using the shutter menu On the shutter menu the absolute pressure 1 inside the cable arms the absolute pressure in the pump flange 2 and the differential pressure 3 between cryostat and cable a
3. in Fig 3 7 which is independent from that of the GERDA experiment To define the zero position of the PLC there is a motor program called Homing Tests have shown that as soon as the zero position of the PLC is defined the precision of the motors keeps the zero position for quite some time and depending on the usage of the PLC Homing only needs to be performed rarely It is usually a task of the maintenance personnel although the operator also has the opportunity to execute this program For Homing the temporary rail system has to be mounted and the matrix plate should already be close underneath the rail system since Homing is a process that causes some mechanical stress to the whole system For this reason the velocity of the movement of the matrix plate is set to be very slow To perform Homing select the accordant motor program with the arrow up down buttons 11 and press start 12 Figure 3 8 shows the setup required to perform Homing Fig 3 7 The coordinate system of the PLC When the string is above the 0 level position values are shown with a positive sign and if below the 0 level then values are given with a negative sign Fig 3 8 To perform Homing the temporary rail system has to be mounted already As soon as the copper bar of the matrix plate is blocked by the temporary rail system the current of the motor increases steadily Once the current reaches a certain th
4. reer erences erereseeeevecce Comer reer erence reese r reer eresrervreesvece 0 Introduction The PLC system of the commissioning lock is responsible for 1 Status control of lock system parameters pressures shutter positions etc 2 Movement of the string motors 3 Interlocks Furthermore it is through the PLC box that most of the shutters and the pumps are being operated Note that some of the functionality is not available for the Hall di Montaggio setup Fig 1 shows a picture of the PLC box with its components Temperature Control Touch Panel Shutter Switches Pump switches Fig 0 1 The PLC box with 1 Switching on the PLC PLC Init The PLC can be switched on by As soon as the PLC is switched on it first performs an initialization During this initialization process global and local PLC software variables are defined and the number of accessible motor controllers is diagnosed and initialized Thus default values like motor acceleration deceleration and motor current are written into each motor controller The last stored positions of the detector strings are also loaded The progress of the initialization is shown in progress bars see Fig 1 1 When the initialization process is finished the system automatically switches to the PLC Main screen which is shown in the next section The PLC is now set into standby mode SIEMENS Fig 1 1 The PLC Init Screen 2 The PLC Main screen The whole f
5. 5 5 Motor program 1303 After the temporary rail system and the string is mounted select the motor program 1303 20 GoTo unmt Railsys in the main menu 10 which will release the string to 150 00 mm where the temporary rail system can be removed safely 3 5 6 Motor program 1304 The motor program 1304 150 GoTo parking position lifts up the string back to the parking position at 900 00 mm so that the operator can swivel in the bulk tube and pump flush it with argon gas 3 5 7 Motor program 1305 To insert the string into LAr execute motor program 7305 900 Auto immerge string LAr As you can see in the motor program s name this is also an automised sequence of movements Press the automatic button 4 after the start button in the Control Motor Screen This causes the string to be released to the surface of the liquid argon After some waiting time the string is then released to its final position at 6000 00 mm 3 5 8 Motor program 1306 To take out the string from LAr the motor program 7306 6000 GoTo parking position is used When the string has reached the parking position the operator can swivel out the bulk tube and mount the methanol bath to warm up the detector 3 5 9 Motor program 1307 After the methanol bath is mounted execute motor program 1307 900 GoTo immerge string mb to immerge the string into the methanol bath 3 5 10 Motor program 1308
6. As soon as the detector string is warmed up execute motor program 1308 150 GoTo parking position to lift up the string to the parking position and remove the methanol bath from the lock 3 5 11 Motor program 1309 In order to remove the string from the matrix plate the temporary rail system has to be mounted first Execute motor program 1309 900 GoTo mtRailSys to release the string to 130 00 mm and mount the temporary rail system Subsequently execute motor program 7302 130 Auto un mt String and press the automatic button see section 3 6 4 As soon as the matrix plate has reached the final position of this program unmount the string and execute motor program 1303 20 GoTo unmount rail system to allow you to unmount the temporary rail system 3 5 12 Motor program 1310 To bring back the matrix plate to the standby position simply execute motor program 1310 150 GoTo standby 3 5 12 Jog up down In case the position of the motor is at a position which does not coincide with any precondition use the jog up down programs With these programs you can move upwards downwards the string up to 1000 mm with a moderate velocity These programs also can be found in the main menu 10 see fig 3 4 Select the program and press the start button 12 Now watch carefully the live values 1 As soon as the string reaches a position where the predefined motor programs can co
7. PLC temporary lock User Manual Author Franz Stelzer Version 1 0 Date 03 24 09 preliminary Contents 0 Introduction s eesssoessssosesosoeessoescsssessososesososse l PLC Hilser a 2 PLC Main screen 3 Move Detectors 3 1 3 2 3 3 3 4 3 5 Main screen Detector Movement eec eee ce eeees Shutter menu Choose Motor Control Motor The motor programs 3 5 1 Homing 3 5 2 Release down 3 5 3 Motor program 1301 3 5 4 Motor program 1302 3 5 5 Motor program 1303 3 5 6 Motor program 1304 3 5 7 Motor program 1305 3 5 8 Motor program 1306 3 5 9 Motor program 1307 3 5 10 Motor program 1308 3 5 11 Motor program 1309 3 5 12 Motor program 1310 3 5 13 Jog up down Comme ree rer rer reer err eerreserseeevece Ce ooooooooooooooooooooooooooooooo Comer ree rer rer rere rer reer rererveeevece Comer reer erence rere rere eerresersreesvece Comer ree rer rer reer er reervresresereesvcce Comer rere rer rere ser erreerereseseecrvece Commer rere rere r reer er reer ereresereeevece Comer reer er rer rere reer eereresesrecesvecce Comme reer erence rere rere ereresesvresevece Comer ree rer reer sere rreerresesreervece Comer ree rer rer rere rere eervresesereevvece Comer reer er rer ere rerereereresesvreeevece Comer reer erence reese rreererereseeesvecce Comer ree rer rer reer err eereresesvreeevece Comer rere rer rer rere reser eerreseseecrvecce Comer ree rer rer
8. m 130 00 mm to the temporary rail system such that the detector string can be mounted It consists of a sequence of movements to assure safe operation The following table 3 4 shows the sequence followed by the motor No Movement from to velocity wait time 1 130 00 to 70 00 mm 500 mm min 0 1 min 2 70 00 to 10 00 mm 100 mm min 0 min 3 10 00 to 20 00 mm 20 mm min 0 min Table 3 4 The motor program 1302 consists of a sequence of movements Each movement is performed with a different velocity such that the approach of the matrix plate to the rail system can be easily supervised by the operator To simplify the usage of this program the control motor screen features an automatic button 4 see fig 3 4 As soon as you have selected the motor program 1302 press the start button and then press the automatic button This causes sequence 1 3 as shown in table 3 3 to be executed automatically This then gives the operator the opportunity to control the movement of the string or matrix plate with one hand inside the glove box to ensure that the matrix plate is brought in safely Note that the third sequence of motor program 1302 see table 3 3 only lifts up the matrix plate to 0 00 mm since then the copper bar is blocked by the temporary rail system The movement of the motor from 0 00 mm to 20 00 mm only serves to apply tension into the energy chain and helps to press the matrix plate slightly to the temporary rail system 3
9. nitinue the movement press the start stop button 12 and continue with regular movement If neccesary these programs can be executed several times if the desired travel range exeeds the 1000 mm To leave the control motor screen select the menu item back to main menu with the arrow up down button 11 press the start button 12 and then click the arrow up button 9 see fig 3 4 20
10. of the present position of the string precondition to execute this program and the task that you desire to do The following figure 3 5 gives an example of how the motor programs appear in the main menu 10 Motor program syntax e g 900 GoTo MTRailSys Current position mm And what to do Fig 3 5 The syntax of the motor program As soon as the current position mm also displayed in the precondition display 2 matches with the position display 1 the selected motor program 12 is executable Otherwise the start command will be ignored Figure 3 6 is a screenshot of the PLC screen and gives another example how the programs have to be used In this screenshot the matrix plate is at position 150 00 mm and should be lowered to mount the temporary rail system If the motor program 1301 is now selected using 11 since the precondition of this motor program 2 matches the live position 1 of the matrix plate the program can be executed The selected motor program is shown in 10 The position of the matrix plate after the execution of the motor program is shown in the target display field 5 SIEMENS SIMATIC PANEL HA HONOL uo ee tarqet aee 130 00 mm fe 10 11 Fig 3 6 In this example the matrix plate is at 150 00 mm and should be lowered to mount the temporary rail system to insert a string 3 5 1 Homing It is important to understand that the PLC has its own coordinate system shown
11. outer circle of the string selector 2 see fig 3 3 will then turn blue as well Now a motor program can be selected As soon as a motor program is selected its precondition wait time and target of the appropriate motor program is displayed in the corresponding fields 2 3 5 These display fields will be described in more detail in the following sections After you have selected a motor program press the start button 12 to run the motor target 0000 0 mm SIMATIC PANEL Fig 3 4 The Control Motor Screen allows you to select different motor programs to immerge detectors into liquid argon or take them out of the cryostat No Program Enable Motor controller Homing Release Down 150 GoTo mt RailSys 130 Auto un mt String 20 GoTo unmt RailSys 150 GoTo parking position 900 Auto immerge string LAr 6000 GoTo parking position 900 GoTo immerge string mb 150 GoTo parking position 900 GoTo mt RailSys 150 GoTo standby Function Enables the selected motor controller Defines the zero position of the PLC Releases the string after homing Mount temporary rail system Mount string Unmount temporary rail system Swivel in bulk tube Immerges the string into LAr Swivel out bulk tube Immerges the string in methanol bath Take out string of bath Mount temp
12. reshold the motor is switched off and the coordinate of the matrix plate is set to 0 00 mm The zero position of the PLC is then defined Values 99 66 that are shown in pre wait or target can be ignored 3 5 2 Release Down To dismount the temporary rail system after Homing select the Release Down motor program with the arrow up down buttons 11 and press start 12 This will bring the matrix plate down to 150 00 mm After the rail system is dismounted select the motor program 7308 150 GoTo Standby to bring back the matrix plate back to it s default position In the following sections the motor programs are explained in detail and show when they can be used The immersion and removal of a string from the LAr environment is described It is assumed that there is no string attached to the matrix plate and that the matrix plate is at its standby position at 150 00 mm 3 5 3 Motor program 1301 The motor program 1301 150 GoTo mt RailSys is used to release the matrix plate from 150 00 mm to 130 00 mm This gives the operator the opportunity to mount the temporary rail system The whole scenario is shown in figure 3 9 Fig 3 9 The motor program 1301 brings the matrix plate to 130 00 mm so the temporary rail system can be mounted 3 5 4 Motor program 1302 The motor program 1302 130 Auto un mt String is used to move the matrix plate fro
13. ring selector 1 the corresponding motor will be activated and the inner circle 2 on the screen will turn blue The present position of the selected string is shown in the current position display 4 on the left hand side of the screen To undo your selection press reset choice 3 and make your new selection Values that are shown in 99 66 target wait or pre can be ignored at this stage To move the selected string press the arrow up button 5 on the lower left hand side to return to the main screen Then select the control motors button which will lead you to the Control Motor Screen described in the following section SIEMENS SIMATIC PANEL oe 00 B lt 0000 0 mm _ fl tarqaet T 0000 0 mm P Fig 3 3 The Choose Motor Screen Only one cable arm can be selected 3 4 Control Motors The Control Motor screen is very similar to the Choose Motor screen and is shown in the figure 3 4 With the arrow up down buttons 11 you can scroll through the main menu enable the motor controller and select the program you want to run Table 3 3 gives an overview of the functions and programs available in the main menu 10 To run a motor or a motor program the motor controller has to be enabled first Select the program Enable Motor Controller with the arrow up down buttons 11 and press the start button 12 The motor that was selected as described in section 3 3 is now enabled The
14. rms are displayed On the lower left side there are arrow up down buttons 4 where you can browse the menu Table 3 2 gives an overview of the contents of this menu No Program Enable 250 shutter Enable 160 shutter Enable pump 250 shutter Enable pump 160 shutter Back to main menu MR WN Table 3 2 Overview of the functions inside the shutter menu There is also a start button 5 a stop button 6 and an arrow up 7 button To select a shutter use the arrow up down buttons 4 to find the shutter you want to enable Then press the start button 5 The PLC then enables this shutter and you should now be able to see the shutter enabled light glowing in the front of the cabinet The selected shutter will also be marked as enabled on the PLC screen Depending on which shutter menu you selected first press the open shutter or close shutter button on the PLC cabinet to move the shutter Like any other PLC operation these are monitored by the state machine of the PLC since forbidden operations could cause serious damage to the lock Only maintenance and administrator personnel have permission to move the cryo shutter The shutter screen is shown in figure 3 2 SIEMENS SIMATIC PANEL pump flange 0000 0 mbar H NOL Fig 3 2 The shutter menu 3 3 Choose Motor On the Choose Motor screen you can select the string which you want to move By tipping into the left or right st
15. unctionality of the PLC is accessible through the PLC main screen which is given in figure 2 1 The following optyions can be chosen 0 PLC Init Initialization see 1 1 Maintenance Interlocks are switched off CAUTION Operation of the system possible without control of system parameters 2 Move detectors allows for moving the strings 3 Setup Adjustment of critical system parameters 4 Measurement Certain menus are only available for certain user groups Table 2 1 gives an overview of the functions which can be executed by the different user groups The function emergency stop can be executed by all user groups at any time All menus are password protected Depending on the user group certain actions can be executed User Functions PLC Init measurement move Maintenance setup detectors Operator v v v Maintenance v v v v Administrator v v v v v Table 2 1 Certain PLC functions are only available for certain user groups In all submenus described in the following chapter the arrow up button in the center bottom brings the user back the next higher level If functions can be executed in a submenu the chosen function names are displayed in the white bar in the bottom of the screen The function to be executed can be chosen by the arrow up and arrow down buttons in the bottom right corner of the screen SIEMENS 12 31 2000 10 59 59 AM Fig 2 1 The PLC Main screen contains all functions of the PLC
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