3/7/2020 10:50 PM | |
Joined: 9/27/2006 Last visit: 8/9/2024 Posts: 12275 Rating:
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Hello dannymatth; Our friend Graeme has posted a very detailed answer on error F 118 on a Simovert VC. https://support.industry.siemens.com/tf//ww/en/posts/f118-fault/54374?page=0&pageSize=10 So we would need a bit more information on these drives' internal technology boards to be able to help you out directly. Another way to analyze your problem would be to look at the BF signal on your Simatic PLC. What model is it (I the part number is available on the front bezel of the CPU)? The BF LED is active when you have a Bus Fault, a loss of one or more slave nodes on the network (Profibus or Profinet). Are your drives part of a Profibus network? If so, this might be linked to your F 118 fault code, in the case your drives are equipped with T100 technology boards. "For example F118 on a T100 means a telegram monitoring time has been exceeded" (from Graeme's post) A telegram is the data exchange structure between a Profibus master and a Profibus slave drive; exceeding the telegram monitoring time means the slave is not receiving an acknowledgement from the Profibus master in the expected time. Basically it means the network is down. So the link between the F 118 code on your drives and the BF fault could be clearer. Do you have the Step 7 software and programming cable to connect to your CPU? If so you should open the diagnostic buffer of the PLC and examine the logged fault messages, to at least determine if the fault is in the CPU, the different slaves or in he network termination. If not you still could start with basic maintenance in the Profibus network, checking cables and connectors, and making sure that the 2 end-nodes (the first and last nodes on the network) have their termination switch (on the Profibus connector) set to ON, while all other termination switches in the network be set at OFF. https://us.profinet.com/top-5-reasons-your-profibus-network-failed/ Hope this helps, Daniel Chartier |
Last edited by: dchartier at: 03/07/2020 22:57:29Last edited by: dchartier at: 03/07/2020 23:01:03 |
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3/8/2020 10:54 AM | |
Posts: 2 Rating:
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The cpu is a Simatic 6es5 yes the drives are linked to the network as well. It seems strange to me its only affecting the 5 Inverters from the 17 and the others seem to be ready to operate with no fault codes. There is also a overload in the panel operating when the machine starts so theres also a fault on the system. I believe the technology board is a T-100 also but I'm not on site to be able to confirm.
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Last edited by: dannymatth at: 03/08/2020 11:16:32 |
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