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Showing results for tags 'position'.
Found 18 results
PLC Rookie2021 posted a topic in MitsubishiI am newer to GT designer. Ive used it a couple times years ago but I cannot figure out how to create a 3 position switch and cant really find any info on it? Is there a special way to set a switch up so that eveytime the operator hits it it changes the state or picture of the switch from left to up then to right and back? im sure its probably just something that im not seeing in the properties menu but any input would be greatly appreciated.
inverter and servo synchronization
Andrea Ascani posted a topic in NJ Series / Sysmac StudioGood morning guys, in your experience what is the best way to syncrhonize a motor controlled in speed with an inverter and a motor controlled in position with a servo drive? Let me explaine better what is my situation: I have a belt running normally at a certain constant speed. in some moments, I would like to syncrhonize the speed according to an axis controlled from a servo. the command of a servo specific position target and of course speed and acceleration e deceleration rate. I would like to adjust the belt speed in way to follow as accurately as possible the servo movement. Thanks a lot Andrea
reset position MR-J3
hamadi posted a topic in Mitsubishihi I want to change a position of a servo (MR-J3-350T) which displays as current value 9500 to zero. how I can do it with MR-Configurator. in which menu should I go? thanks
home postion servo J3
hamadi posted a topic in MitsubishiHi, I have a Mitsubishi Servo motor with its amplifier MR-J3-350T. I lose the home position. How can I set the value of the position to zero if I detect a home detector. I use gx developer. thank you
QD75M4 AND MR-J2S-40B
herobans posted a topic in MitsubishiHello i have problem about connection between QD75M4 AND MR-J2S-40B now MR-j2S is display "Ab" every time i can't solve this problem
1746-INT4 Used for Position
Mr. Bit posted a topic in Allen Bradley / Rockwell AutomationHello, My apologies in advance if this is in the wrong place. I am working on a press that is using a 1746-INT4 to look at the position of the ram. The press is using an LDT as the sensor reading back to the INT4. It obviously works. The press runs everyday. I'm wondering if there would be a reason to use this instead of just a voltage or current analog card? Thank you in advance for the replies.
Controlling Cylinder Stroke Length
grubb posted a topic in Allen Bradley / Rockwell AutomationHello - 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
Omron G5 Servo Drive Rotary Mode
AMSMARTINS posted a topic in NJ Series / Sysmac StudioHi 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
5500 Kinetex Servo Drive with L33ERM Home Entry
dipen_95 posted a topic in Allen Bradley / Rockwell AutomationI know it may sound stupid but I am new with Studio 5000 and trying to build a project where I have to home my servo drive other than the position to zero and it is not fix but rather decided by a safety switch. What I am looking for is a dynamic Home position Entry which I am able to find it in the axis parameter but not in the CIP_Structure. Is any kind of motion FB for home position set entry? Any help would be useful. Thanks PS: Studio 5000 v30, Kinetex 5500 v7.01, L33ERM processor
LinMot position streaming via E/IP
lamboom posted a topic in Allen Bradley / Rockwell AutomationUsing Ethernet/IP to stream position data to a LinMot Drive, may be quite difficult because the LinMot requires a precise period between data points. I've been told PVA streaming has been done with the Rockwell PLC, but the Ethernet IP bus needs to be updated at regular intervals (the requested packet interval between the PLC and the drive), and the task/ladder that has the streaming command is also examined at those regular intervals. This sounds like a timed messaging system over Ethernet, to satisfy the LinMot's requirement for precisely intervaled packets, which would compensate for Ethernet/IP's general lack of precise timing between data packets. (the preferred method is to use EtherCAT) Has anyone ever tried this.. ? Please describe the method with a little detail .. I'm trying to see if an Omron NJ can stream PV or even just P ... using their Ethernet/IP port. If Rockwell has done it successfully, I would love to know how... Thanks much... Regards, Michael
Replacement For Ultra 5000 Servo Drive
Yashj7 posted a topic in Allen Bradley / Rockwell AutomationI am searching for the Replacement of the Ultra 5000 Servo Drive as i cant get online to it with the Ultraware software over wireless plant network. In order to get online i have to connect serial cable every time. And the Drives are used in time critical assembly line kind of environment. So is there any other replacement which works as intelligent as of Ultra 5000 and also have additional feature of built in Ethernet port which can help me to get online with it wireless over plant network.
Omnuc U software
Geir posted a topic in Other Omron SoftwareHi, I have begun to look into some positioning equipment we have had for a while. There is a CQM1 CPU51 connected to R88D-U series servo drives, and a CS1 with C200HW-NC113 and a R88D-U. I have found WinMon on myomron, but not tried to install it yet, will it run at all on a Win7 machine or do I have to dig out some older PC? Same with the NC unit, there is mentioned a SYSMAC-NCT program in the manual, but I have not been able to find this anywhere, Is this still a commercial item? Are there any newer software that will communicate with these old units? If we decide to upgrade any of this, will we have to replace all, or is it possible to reuse the servomotors or other parts? This is all for educational purposes, no production or safety issues involved. I would of course like my students to work with the most updated systems, but unfortunately we are on a limited budget :( Geir
RSLogix Tag Name Confusion
blupony96 posted a topic in Allen Bradley / Rockwell AutomationI am trying to learn the logic of a process at my new job. There are tag names that I can't make sense of because they end with _xva, _xvb, _xvu, _xvd, _xvo, _xvc, _zsm, _zsu, _zsc, _zso, _zsd and so on and so forth. I know they are associated with motion, but I need to make better sense of them. There are no descriptors. What do they mean and is there a resource available that I can reference?
PV800 HMI multiple position switch
willings posted a topic in HMI & SCADAHi all I am setting up a batch tank system, I have 1 pump which can pump to six different tanks(via pneumatic actuated valves). This is my first go with a HMI, usually I would use a multiple position switch. Is it possible to make a six position selector switch with a HMI? I am using a AB Panel-View 800, has anyone done this before? Any help would be appreciated.
Reading position data from GOT
quoroy posted a topic in MitsubishiIn this first picture is a numerical input with a monitor device D2058. In the whole GOT project this is the only device that saves the information inputed. Then on que PLC sequence theres an instruction moving that device's value gotten from the GOT to the position module's buffer memory. My doubt comes when there's another device D10022Z9 getting the same value of D2058. In this case the Z9 index is always 0, I checked. In the whole PLC program this is the only part where the D10022Z9 appears, there is no instruction anywhere copying D2058 to D10022Z9 which is how I would think is the way it has the same data always. Am I missing something or how is this possible?
Mitsubishi QD75MH2, Q06UDEH 2 Axis Position Control
quoroy posted a topic in MitsubishiI need to learn about position control for 2 axis with a QD75MH2 module. I know how the basics about programming with the Q Series PLC but I've never done any positioning control. I'm having a really hard time understanding the program I have to modify and I don't know where to start. Is there any course you might recommend? Even if I have to pay for it. Thanks.
Program 16 position rotary selector switch
michael.southerland posted a topic in CX-ProgrammerI have a 16 position rotary selector switch I'm trying to program to a CQM1 PLC, that I will also be programming to a micrologix 1200 in the future, using CX Programmer. The switch connects to the PLC using 4 inputs, and activates the inputs in a binary pattern 0-16 as I turn the switch. For example: if the switch is wired to the first four inputs of the PLC, and is turned to "9" 0.0 and 0.3 will be activated and 0.1 and 0.2 will not, just like binary 9 = 1001. I have tried several things trying to get the PLC to accept these inputs as a single "data-point," and then convert to BCD or Hex to use in a timer. I'm having no luck! Does anyone have any ideas how this is done? The switch is a Tosoku DPP01 015L20RCB, and because of the age of the PLC my instruction set is limited. Thank you in advance!
Speed/ Velocity Calculation
hboyer90 posted a topic in Allen Bradley / Rockwell AutomationHello, I hope you are all having a great Wednesday. So I was wondering if this is possible, and if so, how to do it. What I'm trying to do is get a real time speed of my hydraulic cylinder using a transducer, a 1769-HSC high speed counter module, and a 1769-L36ERM processor. Kind of like a speedometer in my car. I would like the number in inches/ second. We use a hydraulic proportional valve to control a cylinder that we use to pump molten lead into our die cast machines. Back in the day they used to use limit switched that rest on a tail rod attached to the cylinder shaft to get an approximate stroke length. It was very crude, but it worked for what it was. I'll explain a little more, in case I'm not explaining it very clearly. So on most of our machines the maximum stroke length of a normal shot is about 11". We have different "stages" to the shot. Stage one is typically from 0" (when the shot is all the way returned) until about 1.5", at 1.5" the valve stops and there is a shot delay for 1 second (vacuum draws some lead into the goose neck and into the beginning of the mold), after the delay second stage starts, second stage is from 1.5" to 4", third stage is from 4" to 8" and fourth stage is from 8" to 11.5" or until the shot timer finishes timing, and then another valve switches, and the shot starts it's return. We have the different stages because we typically shoot the cylinder slower at first, and then delay and then almost maximum velocity. We control the velocity with an analog output to a solenoid on a hydraulic valve. For example, for the first stage we may open it up 20%, then 0% during the delay and then 85% during second, third and fourth. Sometimes we play around with different shot delay times, different shot velocities, sometimes 3rd may be faster than 4th, ect, to get the best die casted parts. Anyways, so in the past they would use limit switches. One was a button head style that when the shot cylinder shaft was all the way returned, it made the switch, and we knew the shot was fully returned. One was set at 1.5", 4", 8" etc. They all, except for the shot return switch, were roller style limit switches. They were all made, and once the shot reached that stroke length, they would come off the rod and we would know we were in that next stage. So it was very crude. If you wanted to adjust the stages you would have to climb up on top of the very hot molten lead pot, mark where the limit switch currently was (in case you needed to put it back) loosen the bracket, try to make a measurement and guess how far you moved it. It was crude to say the least. Some of our older style machines that don't need much tweaking still use the limit switch style positioning system. Most of our new machines all use a VisiTrak transducer. The shot cylinder rod that is attached to the cylinder shaft is actually threaded and then has a very thing layer of chrome plating. The transducer sits against the shaft and counts the threads. It transfers those counts to a Very High Speed Counter module in our PLC I/O rack. We have a CompactLogix L36ERM processor and we use a 1769-HSC as the VHS Counter. Then we just do some math in the PLC program and we are able to get shot stroke in inches. We set different compare instructions, for example when: Shot_Stroke is greater than or equal to 0 AND Shot_Stroke is less than or equal to 1.5 then 1st_Stage_Bit is active. We set up different numbers for all the different stages and still use the button head limit switch as a second method to confirm that the stroke is fully returned. The counter is very fast. We are able to know what the shaft stroke is at any given point. We currently do some math using the distance of each stage and using timers to calculate inches per second of each stage. That way we can have a nice Speed number in inches/second that we can use to make different adjustments to the shot. Typically the first stage is about 7"/second second is: 24"/second third is: 42"/second and fourth is 2"/second. But I want a real-time, current speed, not just the speed that it traveled through each of the stages. Ok, after all of that explaining, I'm finally getting to my question. How would I logically write a set of instructions that could give me current speed in inches per second. Like i said, I am able to calculate the speed of each stage, after the shot has completed the stage, I just divide the distance of the stage (in inches) by the time it took to travel through that stage (in seconds). But I would like to have a real time speed, kind of like a speedometer on a car. Is this possible? I know that the scan time on this processor is very fast and the high speed counter module counts very fast as well. How do I do the math to get a real time speed in inches/ second? Sorry for the very long post. I just thought i would give you a background on what we are doing/ would like to do. Thank you very much.