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  1. Hello - I've recently started my adventure into PLC programming and I've found this site to be very helpful. I took on a project that requires control of a cylinder - the short and skinny is that the cylinder will have to provide position feedback and stroke to various set lengths determined by position of a selector switch. So - If position 1 is selected, the cylinder will stroke 20"inches. If Position 2 is selected, cylinder will stroke to 25"inches - so on and so on.   My questions is how to best go about this process. I may be having a brain-block and not viewing this clearly, but something is not clicking for me and wanted some advice. Planned on using Allen-Bradley's Micro850 PLC (had one on the shelf, and CCW software is free so why not). Thanks
  2. GX Works 3 - PID control

    Hi, I am using PID function (PID operation instruction) from GX Works 3 library but it doesn't work. I set all necessary parameters (sampling time, direction and upper/lower limit values + KP, TI). My input PID_Par is array of 25 points (in manual is written: "*1When auto tuning is not used, the same number of points are occupied as when the step response method is used."). For example, in GX Works 2, PID function works ok. Did someone have similar problem? Does someone have mitsubishi library (GW Works 3) with PID function that works correctly?   Regards Luka  
  3.  Hi all. I have a question about how to set up the motor in rotary mode. My application will be a basic rotary table driven by a servo motor without gearbox between. So, in my servo drive axis settings, I select the motor as a rotary mode. then I defined the maximum position setting value for 360 degrees, and minimum to 0. So far so good. But the problem comes when I want to make an absolute move using the mc_moveAbsolute to move 360 degrees. Whit this settings the error "target position settings out of range " will come up. So, what is the solution to rotate 360 degrees without generating this error? if I set up the maximum value to 361 degrees and then if I rotate 360 the error will not occur and the motor will rotate 360 degrees as I aspected, but it's this correct ? or there is another way to do it? Thanks  
  4. Good Evening, wanted to introduce myself. I've been in the Electrical, Instrumentation and Controls field for 25 years. I'm looking for opportunities to build control panels, any info will help.
  5. Hello Everyone I have a problem to connect FX5U with Inverter Mitsubishi D700. ( no  respond from inverter) . I did read and following the manual. Could any one can help me?
  6. There have been many good discussions on the applicability of cloud-based solutions for manufacturing and process control systems. On one side, some people have concerns regarding security and control of the information, on the other side, there are identified benefits enabled by cloud systems. From VMS minicomputers to DOS and Windows, from ArcNet to Ethernet, it is inevitable the industrial automation systems shall adopt the technologies that are getting predominant in IT general use; the current environment that I am calling the “Cloud-iPad era” is no different; therefore the practical discussion is not if those new technologies will be applied in the industrial environment, but how. This paper is not intended to join the conceptual discussion about the cloud, but just to present a few simple practical examples, where cloud technologies are already enhancing industrial automation solutions and enabling new business opportunities. CloudPracticalApplications.pdf
  7. I am using NB Designer for last one year without problems. But from last week i am getting new error Background PLC control recorder 0 error! while compiling and not able to update the HMI. Please help.
  8. Hello, I am quite a newbie in PLC programming. I am trying to add a PID control function into a ladder program of FX3U PLC that was made by the person before me who used GX developer. I have read the manual, but still not sure if I understand it correctly or not. Please help me with questions below: 1. For parameters [S3]+1, how do I set the bit value? My understanding is that I need to align the bits I want, and then convert to Decimal number to set it, is this correct? i.e. If I need bit to be 0100001, do I set the parameter to 33? 2. How do I know if I am doing backward or forward operation? I think what I am doing is feedback control loop, does this mean it is a backward operation? 3. If I set auto tuning bit (parameter [S3]+1 bit#4) to 1, will this make the the program to run auto tune everytime I start the PID? 4. For parameter [S3]+22, [S3]+23 and [S3]+24, the manual said it will be occupied. Does this mean it will be preset by the program which I shouldn't mess with them? But how do I set the output upper and lower limit in [S3]+22 and [S3]+23? Also, I couldn't find any example of PID parameter setting in the manual. Not sure if I missed any important section in the manual. So please point out to me if there is any example. I also attached the manual on the PID page just for a quick reference. Thank you in advance for the help. FX3U Programming PID.pdf
  9. Deif AGI400

    Hello, Is there anyone here that use or have used the AGI400 series of HMI from Deif ? Would like some input before I buy one for testing. Price seems quite ok, and the design isn't the ugliest one either. Pros and cons please !!
  10. MNET to OMNI

    Good morning all, does anyone have any experience communicating to an OMNI Flow Computer through a MNET card, Im getting data back but it is not what i expected.  Should I be using Enron/Daniels? Byte Swapping? Thanks
  11. Hi,  I'm new to TwinCAT 2 and i'm upgrading a long time design (hence the TwinCAT 2 reference), to read a more sensitive torque signal.  I'm using a Beckhoff CX1030 as my PLC Controller.  I needed to add 'homing' to my motor sequence and confirmed with Maxon, im using the function blocks correctly and in the correct sequence to establish my 'absolute zero'/'home' position.  The motor has an output to write to:  ControlWord, which tells the motor that the position it is sitting in is '0.'  My program compiles, it runs, it writes each function block, but it's not seeming to get back to the test run opMode, even though i tell it to and the function block performs the 'Write' function.  it's stuck at zero and not reading an analog input signal from my torque sensor.  so im getting an artificial torque reading through every test.   i think this is related to my tare motion.  I start the program, home the motor, get into profile velocity mode, tare my sensor, enter profile position mode, go back to position 0, then back to profile velocity mode, run a test, sample data, go back to 'home' or '0.'  I wonder 1st, is my variable not linked properly through the system manager?  2nd, i set a boolean variable to set the 4th bit to 1 in my control word write (setting the 4th bit high will set my current position to absolute zero), but did i not connect the program to the main sequence properly?  looking to read a valid signal again and see that my motor moves back to 'home' each time.  Do i not need to home the motor after the tare, since the tare nulls out the torque value after the tare? after this i need to program my sample period, instead of it being fixed, as it is currently written and then use my home position as my trigger to start sampling.... Beckhoff applications department is overloaded, currently and can't help and this is all beyond the knowledge of the general support line.  I've gotten fairly far, on my own, but of course, the project is under a time crunch.   Does anyone know twincat well enough to help guide me?
  12. RS logix 5000 motion control

    Hi Guys! I have a problem with Motion axis move (MAM) command. There is an Allen bradley servo motor what is working well. But I need to add a new program section, wich is in  a specified moment, the axis should move a certain distance. I think I need to use the mam command, just I dont know how can I configure the motion control part. I need to make a new tag ? or what ? I need to use a user define ? PLS help me.   
  13. Hello, I have a cp1h-y20dt-d (sinking output) plc supposedly to be wired to a servo controller. The pulse control method is Pulse/Direction. I've did some manual research on the PLC and found the following diagram attached Untitled. Since the diagram above doesnt show which terminals does it connect to in the CP1H side circled red, I want to ask if those connections belong to the following diagram attached Untitled1? If so, assuming im planning to use only Pulse Output1 (Pulse/Direction method) from the PLC side, is the connection from the first diagram no.1=CCW0- , no.2=CCW1- , no.3=COM (connected to -ve) *Note: these diagrams are from omron's manual SYSMAC CP Series CP1H-X40D_-_ CP1H-XA40D_-_ CP1H-Y20DT-D CP1H CPU Unit Your replies would greatly help. Thanks and best regards, Summer
  14. I'm looking for a cheap solution to have a little HMI display connected to a Control Logix PLC through Ethernet.  The HMI is for a remote offloading station and there is little to display or control as the hardwired controls are already in place. The display would be mostly to indicate if the offload pumps were inhibited or not and which alarms that affected the pumps were active.  My problem is that Rockwell discontinued their mini displays or will during this year (this is for an external application) and the HMI's available that are tiny seem to be "locked" into Compactlogix or the Micro800 series.  Any advice on brands that would do such a device?
  15. We have an auto-clave unit purchased at auction roughly 4 years ago.   CompactLogix L32e and PanelView Plus 1000.  All has been working for us until last week.  Suddenly, the program seems to freeze up after around 30 seconds.  I can still touch the panelview and the touches are registered, (the mouse icon moves) but the program does not respond and I can tell the program is frozen because the clock which displays seconds stops counting. When i boot into safe mode (clicking white box on boot) the system does not seem to freeze at all.  I am able to navigate those menus w/o issue.  We don't have any of the software to connect to the PLC.  I understand this is a somewhat broad issue, but does anyone have any idease where i can start in troubleshooting this? or is their any further info i can provide which would be helpful?
  16. Jawest is OEM/ODM for Industrial panel PC, industrial monitor. Our Rugged panel PC is specially designed for industrial needs. First-class design, rational construction and metal material panel, ensure solid and shock resistance. It’s widely used in military, electric power, industrial auto equipment, manufacturing and weather station etc.  More info visit http://www.szjawest.cn/index.php/products.html   Low Power Mini Embedded Box PC   •  Enclosed dust-proof,anti-corrosion,anti-vibration,Electromagnetic compatibility and high anti-interference ability. •  high reliability, continuous production,decreasing failure rate. •  The motherboard adopts unique design,(watchdog),remote wakening,automatic reset. •  Aluminum alloy materials, drawing process,heat dissipation. •  Fanless ,noiseless,Silent use is more reassuring. •  Working temperature:-20~65°,working by 365*24H with all-weather. •  Fast Network Connecting: Wireless & Wired Gigabit Lan. •  Support Industry Standard Software, compatible with Win7\8\10 and Linux. •  Expandeddisplay for Multi-task ; Electricity Boot. •  Graphics Processing Ability: Clearer Quality Image and full color. •  Strong sutable with surrounding(temperature/humidity)cold,hot,humid,outdoor,voltage instability.
  17. I got into a project were they have 20 panelviews plus 1500 around the building, and they want to be able to serrate the displays accessible by the users based on the physical location of the panelview, for example Room1 should not see room2 but can see room3, at this moment we have a complete application with all the screens that have been downloaded to all panelviews, in order to avoid maintain 20 different ME applications I would like to ask if any of you had this problem before or any ideas on how to go forward with it.   Thanks
  18. Hello, I am new to the forum. Being doing a lot of googling to see if theirs any cross-compatibility between an M241 PLC and a Simatic panel PC and stumbled across this forum which hopefully could help me out. I'm starting an automation project to automate my home brewery. The M241 from Schneider electric seems to tick the boxes for what I require.  At my work theirs a redundant Simatic Panel PC 670 just waiting to be recycled. My question is, can I use the panel pc purely as an HMI for the M241?  
  19. I got denied on a job interview, there might have been a few things but I think not knowing NEC and lack of experience with three phase hurt me. The NEC stuff is for another thread but how do you get experience with three phase? Unless you're in a shop already 3ph can be tricky to find. We talked about it at school in multiple classes but never anything hands on. Yet the descriptions for these entry level jobs all expect you to have a few years in of working with 3ph. It looks like I can make my own three phase from 120VAC with a small VFD. Maybe find some small 3ph motor at the scrap yard, get a new contactor and practice taking measurements/hooking stuff up. I've no problem building a trainer if I get to study up on 3ph and NEC at the same time. Crazy? Any advice?
  20. CAM Control Data

    Hi everyone, I'm trying to use the cam control data by using an MR-J4-A-RJ and MR Configurator 2. When I switch the input "CAMC" to ON, I see that the output "CAMS" is switched to ON which means that the cam mode is activated. When I switch CI0 to ON to choose the Cam Data No.1 and switch ST1 to ON...nothing is happening like if there is no Cam Data. Please, have you any issue or idea ?? Thank you in advance Omar
  21. Flex i/o outputs shorting

    Hello everyone! Im hoping someone could shed some light on a issue im having. Im having issues with a 1794 ow8 output module. This module is used to control 8 hydraulic cylinders that push biomass into a burner. The overall problem is that roughly once every couple months a output will short in the on state and force a coil on, activating the vavle full time and burning out the coil. Each seperate output is fused on the module with a 2a fuse and each modules incoming power is also fused at 2a. The output that is shorted did not blow its fuse. The 'ON' light is not activated but 120v still runs through it. Since each valve has 2 coils and one is forced 'on' the main fuse will blow once the second half of the valve is activated because the valve is fighting itself. It is not just this one module, this happens on other modules that serve the same funtion as well. This is a contractor installed system but they have been no help so im left trying to figure it out. Could my seperate inputs be fused too high at 2a for this type of card. These are parker valves 120v 60hz with a max 1500psi pushing wet hog/chips. Any suggestions would be really appreciated!
  22. Cimplicity 7,5

    Good Day There is a SCADA Cimplicity and controller Control logix 5561 AB. Communication between them is organized via Ethernet IP. It is necessary to transfer some tags from the Cimplicity to the controller Control Logix. How to do it better? Through Rslinx DDE OPC or write scripts in the Cimplicity? 
  23. 1.Can anyone say how can i communicate control logix plc with ethernet to serial converter. here i am not having any eds file.
  24. Does anyone here use this? Control Draw If so how useful do find it? Worth spending the time on learning or better off with another product? If so what? My application is going to be for in-house management and design of control systems for a food manufacturing plant.   Thanks.
  25. Is there a possiblity to retrive password from mer file? I wanted to restore mer to runtime with local directory and its asking me for password that i don't have.  Could some one help?