Search the Community

Showing results for tags 'safety'.

  • Search By Tags

    Type tags separated by commas.
  • Search By Author

Found 10 results

  1. Everyone, Using a Q series Mitsu PLC interfacing with a M1P Pilz Safety PLC - and only receiving 32 bits from the SPLC. I have the station setup in GXWorks2 as a device station (occupying 4 stations). I am receiving only the 1st station of the 4 designated. (It is node 9 in the snippet) Any tips on this? (First time posting btw) Thanks, Elliot
  2. Hello,  I got Allen-Bradley  1769-L36ERMS, AB Powerflex 755 and 20-750-S3 safety card.  According to: https://rockwellautomation.custhelp.com/app/answers/detail/a_id/946912 „"There is NO Integrated Motion / CIP Motion support with 20-750-S3 safety card” so I want to run hardwired emergency shutdown system.  How can I configure this module with safety card in PLC?
  3. Hello, I need to make an ethernet communication Siemens S7-300 <> Omron G9SP. The HW of the Siemens that i us are CPU 315 2DP and CP 343-1 Lean. I did try to follow the Omron manuals Z922 and Z924, but faced with some problems. First of all in Z924 there is no complete HW configuration of Siemens (communication configuration is missing). Also, formats of messages differ in both manuals. Maybe there is an Simatic Step 7 project example, that i could open with Simatic Step 7 manager to do a deeper investigation, or maybe somebody has a lot more experience in this case? Thank you in advance.   WBR @rturas
  4. Mitsubishi Safety PLC

    Hi everyone.  Is it possible use mitsubishi safety plc as logic solver for fire and gas detection system  on the plant ? 
  5. Good day, We are using Guardlogix 1756-72s controllers for our ESD system. We created safety add-on instruction in RSLogix5000 v20 and wanted to test it using RSLogix Emulate 5000, however we are getting an error that safety add-on instructions are not supported in standard controllers. Is there a way to test safety code using Emualate or Softlogix?
  6. Writing access to Safety CPU

    Hello. I tried to read/write from/to safety cpu (QS001) over MC protocol. I managed to read from cpu devices but i couldn't write to any safety cpu device. It was possible to write data to Q series plc (Q02HCPU in my example) with MC protocol. I am searching any method of writing to safety cpu (QS001). If anyone could this before? And are there any settings in GX Developer (GX works) for access to writing to QSCPU? P.S: As known it's possible to read/write from/to Q series PLC with MX Component. It's also available reading from QSCPU with MX component. But cannot write to safety cpu with MX component (written in Mx component manual). Thanks.
  7. Mitsubishi - safety

    does mitsubishi have redundant PLC that is SIL3?
  8. Several years ago before I arrived at my company, an integrator came in to do the automation on our system. They used a Controllogix 1756-L61S for the safety portion of the project. Apparently, when they completed the job they did not provide the source code with comments, safety password, etc. for anything and it got ugly between our company and theirs. In other words, they would not provide it if we went back to ask them. Allen Bradley has told us that we can not make any alterations now to the safety logic because we do not have the password that was used to create it. And they said there is no longer a master password that you could use like in previous controllers. Does anybody know of any workarounds for this? Or have heard of anything that might possibly work?
  9. 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.
  10. Hello everybody, I'm designing a safety system for a HV power supply. The idea is to use a series of 2 contactors to supply power to the system controlled by a safety PLC. So, it is a typical application. The problem is that the power supply and the contactors are are installed on HV platform, isolated from ground, where the PLC is installed. I think the only possibility is to use an optic fiber link. Does any body know is there is any way to connect a contactor to a PLC output using an optic fiber link, without compromise the cyclical checking performed by the safety module (as I understand, the outputs are continuously check in order to detect wire breaking). The alternative that I have is to use a distributed IO system installed on the platform, connected with a Ethernet Optic Fiber to the PLC: for example using a simens S7-400 PCL with a IM467FO modules (on ground) and a ET200M system with a IM153-2FO module on the platform. But I wonder if there is something more simple and cheaper. Thanks!