Search the Community
Showing results for tags 'safety encoder'.
Found 81 results
-
hi have a good time i have a nx102-1200 and a nx-ecs212 module. I connected an SSI encoder to the card and read the position value in the software. The encoder counts 360 pulses in each round and then it goes to zero. I want to use GearIn function and have the encoder as the master and a servo motor as the slave. In each revolution, the encoder pulse becomes zero, and as a result, the servo motor movement is not continuous!!! I want the servo motor to be continuous! In fact, I don't want the encoder pulse to zero every time. What should I do? Is there a solution? please help me thank you so much
-
Let me start off by saying that I have 36 plus year of experience with Industrial Automation and Robotics and take great exception to the sensationalism expressed in these headlines. Please allow me to rant and hopefully save another young engineer from a similiar mishap. https://www.foxnews.com/us/robot-attacked-tesla-engineer-at-texas-factory https://nypost.com/2023/12/26/business/tesla-factory-worker-attacked-by-robot-which-dug-claws-into-back-arm/ Websters tells us that an attack is "a belligerent or antagonistic action". Such action is by definition not possible by a non-sentient piece of automation equipment. The American Industry Standard for Robotics has been ANSI-RIA 15.06 and it clearly states that anyone entering the working envelope of a robot must posess the Teach Pendant or Alternate Disconnect Means at all times. Now reading the articles it appears that this was a multi-robot cell as the "engineer was programming two other robots in the cell." Thus if his work did not involve the Third Robot it should have been under Lockout-Tagout_Try per OSHA 1910.147. Had that been the case this catastrophe would not ahve occurrred. If the Third Robot needed to be under power then it's pendant or disconnect should have been in the control of the Enginner and the 3rd robot limited to slow speed allowing for stopping when the errant action occurred. There is another possibility I would mention, something malfunctioned in the controls design and the safeties the Engineer thought he had, did not operate as intended. The designer in this case will need to explain what happened. In closing , let me point out this incident occurred in 2021 and this is 2023 almost 2024 and we're just hearing about it. If the Industry really wants to get better we'll "Fail Forward" and teach other robot users what actually went wrong here and make sure others don't have the same mishap. That Mr. Musk would be a world class response.
-
We are working with two VFDs FR-A820 Series, each of them driving a motor that obey a master-slave relationship. One of them is in speed control, while the other is in torque control. Each of the VFDs has one of the Mitsubishi FR-A8AP encoder reading cards that collect the data from an Avtron A56 encoder. While testing our system it came our realization that, if one measures the resistance across the terminals of the encoder cards mounted on the VFD these are not the same. Concretely, this is the reading we get: (see attached) We noticed that this difference in the resistance causes a voltage drop in the encoder signal when looked over a oscilloscope. We are surprised that this resistance is different: a) between the cards, b) between the terminals A and B in the VFD. We wanted to ask: Is this behavior expected? Should the resistances in both cases be different? Is this something we should be concerned about? So far our application works and our motor turns as they should, but we are quite surprised that this is the case.
-
Hello Guys, I have a Mitsubishi A8000 series vfd with an encoder card and also encoder. With analog (0-10V) signal i can read back the current speed. The conveyor convey paper sheets. Occasionally they change the width of the paper but the the two type of paper is connected. We have a camera on the begging of the conveyor, and we would like to lets say cut it 2 meter later. But the position should be very precise otherwise we are not cut it in the good position. The cutting procedure would happen also an asynchronous motor or with servo motor. Is it possible to write a tracking program and cut paper sheet in a good position ? My plane is to stop the CV in the position and waiting for the cut and go on. The plc is Allen Bradley, control logix 5580. Any tip would be appreciated. Thank you so much.
-
Hello Guys. Is it possible to use an fr-a840 to use in the same time positioning control and also in speed control mode ? In the moment the vfd is in speed control mode. But now i also have to need to stop the conveyor in certain position. It will be a new feature. If its not possible, do i need a hsc ? The speed of the conveyor is 20 m/min and the accuracy should be within 3 mm. Could anybody help me with this. Thanks ahead.
-
Hello Guys. Is it possible to use an fr-a840 to use in the same time positioning control and also in speed control mode ? In the moment the vfd is in speed control mode. But now i also have to need to stop the conveyor in certain position. It will be a new feature. If its not possible, do i need a hsc ? The speed of the conveyor is 20 m/min and the accuracy should be within 3 mm. Could anybody help me with this. Thanks ahead.
-
Sysmac Studio - Password for "Release of Data Protection"
PaulB303 posted a topic in Other Omron Software
Hi All, I need access to a the Safety function blocks within a safety CPU using sysmac studio on a machine we are upgrading.. Is there a generic password available to gain access? Best Regards, Paul -
Hello guys. I have a question, i have a mistubishi fr-a800 vfd with an encoder option card. On the motor we have an encoder. I can read back the speed with the plc with analog signal. But can i use also for, tracking the distance ? Can i set anyhow the inverter lets say after one round on the encder send some digital signal to the plc. Is there any chance to set it ? Lets say this is a conveyor, in this case its better if i put an encoder/counter on the conveyor and it will be directly connected to the plc. Thanks ahead
-
Hello guys! A would like to set up a new inverter for my existing machine. I wanna follow the recomandation about the safety wiring. The only problem is I need one more, Z safety output. I checked, there is official expansion unit, and it says I have to only connect the EA, EB, EG, and EP terminals ? Do I have to connect again the X0, COM0 ; X1, COM1 terminals, because I want actually the same inputs, just I need one more safety relay output. I attached picture about it, thanks ahead.
-
Hello group, Is it possible to copy the data string from a 1734-IB8S to a datatype such as an INT or DINT? When setting up the I/O with a Safety PLC, the discrete I/O is setup within the Safety Program but it's contained within the program itself. To utilize the same I/O points in a Continuous task requires inserting and remapping the I/O points to essentially the same tags. If the I/O data could be moved/copied to a global datatype within the Safety Program, it seems like it would reduce any redundancy in the Continuous tasks. Anyone done anything like that/ Suggestions?
-
How to change encoder reading from positive to negative
automationtalk posted a topic in NJ Series / Sysmac Studio
Does anyone know how to change the reading on Omron servo motor reading from negative to positive? The encoder is reading negative values when it is moving in the forward direction. I am using 1S servo on NX1P2 controller on Sysmac studio software. Please suggest. -
Hey group! I am working on a project that has a machine that forms cartons that will drop the cartons into a cleated conveyor after they are formed. The forming machine needs to be synchronized with the cleated conveyor so that the formed cartons will drop in between the cleats as they pass under the forming machine. So, in essence, the conveyor will be the master and the forming machine will be a slave to the conveyor and match its position accordingly. Initially, it was proposed that the conveyor utilize a CIP encoder so it could be set up as a motion axis, but the customer declined that option as they didn't care for using CIP encoders (can't really blame them!). So, a slightly cruder proposal of using two 1024 count encoders was proposed, which they accepted. However, your friendly programmer here isn't quite sure how to make that work! I think the basic concept is encoder following but but I can't seem to find anything online that really describes the actual process or logic for this. The RA Sample Code site doesn't seem to have anything on there but maybe I just haven't entered the right search keywords. The forming machine has the following notable components: 5069-L310ER 5069-HSC2xOB4 PowerFlex 525 drive 1024 count incremental encoder As noted, the idea is to have a 1024 count encoder mounted on the conveyor with some sort of ratio so that the counts will run the pitch of the cleats 508 mm). Some trickery will have to worked in to get them to sync at the right time but for the time being, I'm just looking for a method to do the encoder following and asking the group if anyone has some ideas, or better yet, a method, of how to accomplish that.
-
Hello, I am using Omron’s safety G7SA to relay 24 volt line. But the strange thing happening is that, one relay’s output is only 5 voltage, even the relay is on. I exchanged relays, it remains the same. Maybe the base socket is problematic? Or is this just G7SA failure? 5v (exactly 4.96v) is strange. Please give me some advice. Many thanks in advance. Ting
-
Hi all! How can I use two AB phase encoder at the same time. I use Mitsubishi FX1N PLC, and I would like to use a high speed counter. I think the plc has 6 high speed counter input, but I cant use only one at same time.
-
I have a question regarding hazardous zone design. My control cabinet will be in safe area but I need to have e-stop and safety limit switch located in hazardous area, Div 1 Zone 1. I am assuming that I can use zener barriers or isolators between the field devices and safety relay. I just wonder if the safety relay will function properly with barriers in between? Also do I have to use 24VDC safety relay for this application? I don't know what voltage/current is present on the terminals connecting to safety devices.
-
Hi, I have to implement an axis control in a NX1P2 PLC using an inverter (3G3MX2) and an encoder cabled on a EC0122 board. I found something similar implemented on a CJ2M PLC, but I have no idea how to set up the axis in the configuration of sysmac studio and how to implement the control. Can someone help me? Some sample to catch out the configuration? Thanks a lot Andrea
-
hi everyone i have a question about nx ec0122 i connected an encoder to ec0122. now i want creat a programm for read the pulse and reset pulse. Then write a program to measure the length of a roll. How should I do this? Thank you for your help
-
Hi. I have been up, down left and right in sysmac looking for the safety cpu's to add. If i open a project that has these devices, "Safety CPU device" shows in their toolbox window, while my project that does not have any safety added (trying to), does not have the "Safety CPU device" in toolbox. Any idea how to get it to show up so i can add the SCPU?
-
So im looking for recommendations on a safety PLC application, and I'd like some advice. So the addiction is zero motion detection, were using a 5069-L306ERMS2, 5069-IB8S, 5069-OBV8S. What id like to know if its feasible and safe. Can a zero speed detection code be written and safe in a PLC? I mean you can buy a zero speed detection safety relay, and two generic sensors , one PNP, and one NPN, and its just watching the pulses to happen in a predetermined manor and that both transition in the correct manor and that they both stop. So why or why not do this in a PLC? Any advice on how to do it, and considerations or advice? What are peoples thoughts and or advice?
-
Cip safety / fsoe safety scanner compatibility with sysmac
Lipton posted a topic in NJ Series / Sysmac Studio
Hello. We are looking for a safety scanner that has CIP safety(Ethernet IP) or fSoE (Safety over etherCAT) that is combability with sysmac and NX102 cpu. There is a lot of safety scanners on the market that support CIP safety and fSoE and I have tried to load in both EDS and ESI files into sysmac with no succes. Of course the best option would be that OS32C safety scanner from Omron themselves would have build in support for Cip safety at the moment it only support ethernetIP to read out data for diagnostics. Is there anyone that is running a safety scanner with sysmac with CIP safety or fSoE ? If you do I would be very happy to receive the brand from the safety scanner manufacture. /Best regards. -
Hi All, I just take over a project which involve accurate positioning and movement up to 0.010mm(around 10 microns) of a servo motor. I found out that my motor always move to an incorrect position. Let's say I want it to move to absolute position of 5.210mm, I found out that it may move more till 5.235 or move less 5.190(something like that). So i start to check if I'm outputting correct pulse. Using CX-Drive, I connect to the driver then i found out that the pulse is correct and consistent(for example i use my pulse per revolution and pitch to determine how many pulses) Currently I'm using an incremental encoder and servo motor and my PLC cycle time is around 12 ms and my servo move at a speed of 0.66mm/s. So I was wondering if my PLC scan time will affect my accuracy in moving ?? I'm using a CJ2M PLC with CJ1W-NC413 pulse card , incremental encoder and a servo motor. I want to make sure is not software limitation or anything wrong on software side before I bring it to my mechanical team Appreciate all inputs here and thanks!
-
Hey folksI'm trying to make a Ladder program in Sysmac Studio to control a Crane.The crane gets via a HMI a position that it must drive to, first at high speed then in low speed this is controlled via encoder signal for fine positioning there are several sensors.For all this I have an NX1P2-9B24DT1, NX-EC0222 and 3G3MX2-A4030-ESomeone here who can help me with an example of how this can be done in Ladder.Many thanks in advance for your help.
-
Hi guys, Can someone explain me what is the difference between SS1 and SS2 instruction ? I read the help but its not so helpful for me. THank you so much.
-
Hi, Can someon help me with the following question. Like what makes a Kinetix 6000 drive a Guarded drive ? What type of safety stuff can you set to make it more safe. Is it some parameter ? I am bit confused, by the manual. Should I active it in the PLC program or how ? Or it is some setting like a safe speed or torque. I would really appreciate any help. Thank you so much ahead. Have a great day, thanks for the reading.
-
Hello guys! Im using RS Logix 5000. Can someone explain me what is the difference between when a servo is shutdown or disabled ? I read the help but it says the same. I can assume it like when its shutdown, there is inside some circuit which is not allow the 3 phase for the drive. Disabled is that when it have the 3 phase but nothing can happen ? Is there any difference with the break ? Like when its shutdown it can rotate until its slow down by itself or the break will be active ? I tried to uplod a pic but it was not succesful. When you open a servo axis properties and you choose the Fault actions tab. You can find there these settings. Thanks a lot.
