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  1. Hello Everyone. We have Schneider TM241 PLC Along with Citect SCADA System at 100MWp Solar Power Plant to monitor and control various equipments like Inverters, Switch-Yard, MFMs, Weather Monitoring Systems etc... Government Authority here asked every solar plant to control the generation as per the instructions by Load Dispatch Center, for that we need to implement logic to control Generation as per requirement. For that we are controlling generation from inverters by giving them generation setpoints calculated by PLC using PID function.   But we are facing one problem while using PID. (FB_PID of Toolbox Library)   Suppose we need to generate only 60MW out of 100MW. So we set PID setpoint to 60MW and according to that we get PID output and according to that PID output value we provide generation setpoint to every inverters.   This system works very fine until the clouds comes into the picture.   Now suppose Setpoint of PID is 60MW and PV is also near about 60MW, and suddenly large cloud comes over plant and block solar radiation.   In this case generation comes down to 10MWp(or any value below 60MW), So output of PID will Increase and keep increasing and settle at the Maximum value. but without solar radiation generation value stays very down then Setpoint.   Now suddenly Cloud moves and again solar radiation increase, but the PID output is maximum at that time so, Suddenly Generation goes from 10MW to near about maximum capacity (100MW) instead of 60MW, and then it will slowly comes down to 60MW.   We need to rectify this generation shoot up when cloud moves. Anyone have idea how can we solve this problem or anyone have programmed PID in this kind of situation.   Is there any function block available to do this correctly like function block of PID with two Reference or something like that...   We are using TM241 which is CoDeSys based PLC.
  2. Hello everyone, I have a Kinetix 6000 CIP drive (unwind) and I need to control its speed by a PID controller. I have everything working except the MCD instruction doesn't pick up on the PID output value change. It changes the JOG speed, which I use to control the unwind, if I set the speed manually, which is slow. The PID changes the speed almost continuously. Any suggestions are welcome. This is how I'm attempting to control the speed: A1_r_JogSpeed = PID output value   Thank you    
  3. HSPsO

    I am using fatek FBs 32MN PLC. i need to run the nema stepper motor synchronized with induction motor's speed with some ratio. in my case the speed of stepper motor will change as the speed of induction motor changes its speed, may be many times in a second. Problem is that the speed of stepper will be constant as before until i have to disable and then enable again HSPSO function. is there any solution that i can dynamically change the speed of stepper without disable and enable HSPSO function ?
  4. Hi all, I have my own driver to communicate with a MicroLogix 1400. Please refer to the attached screenshot from Wireshark. 10.10.21.10 is my driver's host, and 192.168.1.192 is the ML1400. The startup sequence to establish a connection & session with the PLC is correct I believe: - In the grey highlight, client requests a connection to .192 via SYN and this is ack'd - A session is registered, and forward open is successful - There's a lot of stuff in green simply because I've also got an HTTP browser session open to the PLC to monitor its session table - In between, spaced 8 seconds apart, are my two attempts to keep the connection alive by sending a List Identity request (as a ping, if you like). These are highlighted in pale blue. - However, 16.5 seconds from the start of the grey highlight, and 16.4 seconds after sequence=115 ack=99, the controller sends back a [RST, ACK] and a callback from my socket code tells me that the session has been dropped. The connection timeout for the PLC is configured as either 30 or 60 seconds, so I don't see how that's relevant here when the reset is happening only 17 seconds after it was established ? However, presumably the PLC doesn't see the application-level "List Identity" request as a valid means of keeping the connection alive. What is the correct mechanism to use that the PLC will accept as a keep-alive ?
  5. PLC Panasonic FP0R Motion Control

    Hi, I am using FP0R C32T, i use FPWIN GR to make plc program using jog operation instructions F172. I used the program exactly like manual, but still got error code 45? Did anyone know about this thing?
  6. So I'm having trouble writing a FBD within my current program for a slitting line. I need to keep a constant tension on my web as it is being recoiled onto our recoiler. I wrote a simple program using a sensor to read the growing rate of the coil to get a radius and I have feedback on my torque on the recoiler motor. The simplest math for this application without getting into anything too fancy should be Tension(lbs)= Torque(ftlbs)/coil radius. only problem is when its less than a foot then my calculation is thrown off and it actually shows tension goes up until it reaches the one foot mark then it seems to scale correctly. Do I need to scale something else? Any help on this would be appreciated.
  7. Good Afternoon  im a complete newbie when it comes to PLCs but have done plenty of PIC programming in the past. I've been gifted a couple of FX0s 20mr units to try to repair something I made with PICs years ago. It got damaged during a move and I can’t see well enough now to make PCBs anymore so thought that this might be a solution. The basic operation is  1. switched on 2. motor A moves till hits limit switch (X000) 3. Wait 2 seconds 4. motor reverses till hits second limit switch (X001) then once this has been completed then the following  5. Motor B turns clockwise for 30 seconds then stops  And while Motor B is turning I need Motor C to turn until hitting limit switch (X002) I then need to get it to repeat on the press of a button but I need to reverse operation of Motors B and C I am using double position relays to drive the motors so motor A is on Y000 and Y001 if I power either relay the the motor turns in that direction. Same with Motor B and C Y002 to Y005 is this something that’s possible with one of these controllers or am i going to be programming a PIC to control the PLC ?   All the various COM and powers are connected up, I can individually make every motor do what I want, but the program doesn't flow from one item to the next. but this is probably just me      
  8. Mitsubishi FX5-4LC

    Hello Guys,                      can anyone help me programming of FX5-4LC temperature control module with FX-5U80MT PLC. I want to Read present temperature value of each channel and want to set Temperature Set value from PLC.
  9. Hello guys, I am very new at this. I am trying to make a Schneider PLC (TM251MESE) to send some serial commands (485)  to a integrated stepper motor from Automation Direct (STR-MTRD-17030RE, but I am lost. The driver has been program to receive the SCL commands. But not quite sure how to send those from the plc. Im using SoMachine V 4.2 Have any of you done anything similar? Any example will be greatly appreciated.  Thanks 
  10. Is there a way to monitor the Temperature of a Servo Motor on Allen Bradley Servo motors... MPL? PLC: CompactLogix 1769-L30ERM Drive: Kinetix 6500   Motors: MPL-B310P-MJ72AA, and  MPL-B560F-MJ72AA I would like to be able to monitor the temperature, and flash a warning screen on the HMI if the Motor gets too hot, or perhaps shut down the operation before the Motor overload trips. The drive and PLC are connected through Ethernet IP What I don’t know is if that Motor heatsink temperature information is available to the PLC.
  11. Hi there, As a software engineer, but a newbie to the Allen-Bradley world, sorry if this question doesn't make sense. I'm enhancing an existing driver by trying to add the ability to read/write structured and array data types - rather than just the elementary data types it supports right now. This following question is only in the context of SLC/500 & MicroLogix 1400. And I'm currently working on a Counter as a test case, but any solution obviously needs to take into account other structured (and array) data types. One of the requirements is that the user should be able to select a specific atomic item within a parent structure/array that they want to read/write. So, using the Counter as an example, they might want to define a field which holds just the value of the accumulator. I know that I can achieve this with a CIP command. I specify file type 87 for counter, file number as 5 (my test example happens to be the standard C5 data file of counters), and element is 0 (for the first counter in C5). Bit number is irrelevant so remains as zero. I ask CIP to return me 2 bytes of data (to hold just the accumulator word). Finally, I tell CIP that I want sub-element 2 (because the accumulator is Word 2 of the whole structure). Sure enough, the CIP response gives me exactly the 2-byte accumulator value I was expecting, nothing more, nothing less. Success. My question is this: I knew I had to specify the sub-element as 2; this happens to work for a Counter because of the way it is structured as 3 words. However, it implies that the value I specify for sub-element is ALWAYS measured in units of 16-bit words. Is this a universal truth (i.e. works for other structured types too ?), or does the size of a sub-element depend on other factors, such as the file type ?   Thank you in anticipation.
  12. Hello, Have this error come up constantly and can't be reset. Motor hasn't tried to drive at all. Second motor showing same problem. This is a new configuration on new machine. Other inverters configured without any problems. Anyone seen this before or any ideas what could be the issue.
  13. Hi Every one, I have two 2198-P070 bus power supplies for that I’m using for four Kinetix drives, 2 drives per power supply, all controlled by one processor (5069-L350ERMS2). I have an enable contactor setup for each power supply for each set of drives. I have them configured as DC bus groups 1 and 2 respectively. I had the first set of drives working, setup inside the motion group, with no issues. When I added the second power supply and drives. I found that when I added them to the motion group I couldn’t get the enable contactor to close for the first set of drives. I f I took them out of the motion group and made them ungrouped then the first contactor would close but then I couldn’t get the contactor on the second set to close. Do you have any thoughts as to what I might be missing to get these to work? See the screen shots for more detail. Let me know what you think.  Also, I have heard that only one motion group is allowed per PLC, but my question is : Can I use  sevral axes and Power units in the same motion group? 
  14. I thought only PLC5's had EEPROM, but I was told MicroLogix PLC's also have an EEPROM that need to be burned to... What are all the PLC's that have EEPROM and require an EEPROM burn to prevent the program from being wiped in a power cycle?
  15. My project is to read an RFID tag (ascii) with a Micrologix 1400, send the string to a PC using Ethernet/IP, lookup and compare in an Excel spreadsheet, and send back data (probably an integer) for the plc to use to control direction. I have to scan and compare an RFID tag to a list of 1400 possible part numbers, at different locations (more than 1 plc). I want the several PLCs to go to a single PC to make it easy to update when changes occur (on a weekly basis). Has anyone done anything like this? I'm assuming there will have to be some kind of vb or c+ application involved.   Thanks,  CK
  16. Hi All, Am trying to communicate and make In-Sight bar code reader to trigger through MicroLogix 1100 with RSLogix 500.  Does any have any info as to the steps to follow. Most of the info I saw and have tried were for SLC processor In fact, I created the String file ST10:0  for the target device as was mentioned in one of the posts but when I complied it there was error saying that St10:0 was not supported by the module. Please see attached file. Any insight will be appreciated  
  17. Getting this error while adding MC_TorqueControl. I want to control torque from HMI value. Using R88D-1SN08H-ECT drive and R88M-1M75030T-S2 Ac servo motor with NX1P2 PLC. Newbie Here. Please support. Error    1    The Axis parameter of the MC_TorqueControl instruction does not support single-axis position control axes.    Program1 Section0    Row 6  
  18. Control Panel

    Is it possible to view the values / states of all inputs, outputs and workbits (e.g. 64.00 through 64.15 on Omron CQM1 PLC) on a single screen or control panel within CX-Programmer software?  I'm trying to troubleshoot some ladder logic that I wrote and need to know the values of 5 or 6 inputs/outputs/workbits simultaneously.  Having to scroll up and down through my ladder logic repeatedly does not work well with code that changes state every 5-10 seconds or so. Any help is welcome.
  19. Hello  We have just purchased some equipment with a Control Logix 5561 (1756-L61/B Rev 13.40). The compact flash card is missing from the unit but the seller says the unit was running in his facility prior to shipping. Does the 5561 have internal memory where a program is stored? Is the Compact Flash used only for recipes and persistent data? Thank you
  20. Logic to control many motors

    Hi everyone, I trying to develop a logic to control 6 motors. Two motors needs to working and four motor will be in stand by. When one of the two motors fail, one of the four motors will start to work. Another rule is, when one of the motors that is working reach the preset time of working, the controller will stop that motor and start another motor with low working time, and so on. I'm have difficult to solve this problem. Can someone help me, please? Best, R.  
  21. stepper motor position control

    Hello, I need to have a cx-programmer code which I can control my linear actuator position by setting 3 positions with timer, I am using a CP1L pro'skit
  22. I know nothing about HMI's or Crimson software.  I'm in I.T. and we had to change the third octet in the IP address and gateway on all devices at our warehouse.  I extracted the file on one HMI, changed the ethernet info, and clicked send.  That HMI that runs a carpet machine works perfectly.  I went to the second carpet machine.  Extracted the file changed it's ethernet info, clicked send.  It came back with all ---- (dash's) instead of zeros, the carpet machine won't work.  I kept messing with the file trying different things, and inadvertently saved over the original extracted file!!!!!  So I thought I'd extract the file from the working carpet machine and loaded it on the second carpet machine.  I get the same issue, all ---- (dash's) on the HMI and you push any of the buttons on the front of the HMI and nothing works.  These are Allen Bradley MicroLogix 1500 running Crimson 2.0 HELP I don't know how to resolve this issue.  I would have thought both HMI's would have been the same!  HMI all dashes.eml HMI all dashes2.eml
  23. Sample blocks for S7 1200 plc's

    Hi experts, please share the sample blocks for the EDITABLE TIMER block it should be editable from HMI(Siemens). And also motor run hour block. Actually i am having all blocks in tia v12 version and sadly i dont have the old software to convert it again. So please share the blocks that it shoud be work in TIA V14 for s7 1200 plc's. Please note that the blocks should use add instructions to calculate the time because i don't have much memory.
  24. I have a micrologix 1100 PLC as well as a weintek HMI all connected through a network switch for them to communicate between each other, however I'm having an issue where the Micrologix Controller will not retain its IP address once I set it through Allen Bradleys BootP tool. I can set it through the tool and then go into RSlogix 500 and communicate with it and all that, but once the controller is turned off the IP address goes back to its factory setting of not showing an IP at all. Any suggestions/ ideas as to what I'm doing wrong?
  25. Control Panel Drawings

    Gentlemen and Ladies,                             This post might come off as generally lazy but this is purely in the interest of saving time. Our company has been building control panels for quite some time. I have been doing the design for about 10 years or so. We typically build Allen Bradley type control panels. Our main customers are water/wastewater so they are typically Compactlogix with basic IO. (AI, AO, DI, DO) modules. Recently i've been using the IO Wiring System modules. These save an incredible amount of time. However, they are quite big and require a decent amount of space. Our smallest control panel size is usually 36x36 and that is pretty tight. My question to all is, does anyone have a set of control panel drawings for an Allen Bradley compact logix system without these wiring modules? I am looking to create a smaller control panel, and I just haven't had much time lately to sit down and do the design. This is indeed a shortcut, but time has been limited on my end as of late. I apologize if this is out of line.   Thank you,