text: <s>[INST] Kinetix 5500 S47 (FBK Device Failure) Summary: Kinetix 5500 Feedback woodoo with MPL motor.Hello Guys! I have an interesting problem with a Kinetix 5500 drive. The machine built with 3pc 2198-H008-ERS drive and 3pc MPL-B220T-VJ72AA motor. The CPU is a CompatcLogix L30ERM. The problem is what I wrote in the title. The servo working for a hour and get an error what is: FLT S47 - FDBK Device Failure 5. I found an article in the knowledgebase what is: 585056 - Kinetix 5500 drive S45 Fault. We changed the motor, the feedback connector, cable, drive, everything. The problem exists. The cable lenght is 15m. Somebody met before this problem? After we changed the HW stuffs, we upgrade the CPU to V26 and the drives to 4.001. And the problem still exists. So what do you think what can do with this? BR, Tamas [/INST] Please take a look also to the following technotes: Kinetix 5500: FLT S47 Feedback Device Failure Troubleshooting Kinetix 5500 Drive - S47 Subcodes FDBK Device Failure Flt S47 05 on Kinetix 5500 Drive with DSL Converter - fuzzy logic In order to enhance the reputation of the Forum's contributors, please rate the replies you got and remember to close the thread clicking Choose as Best Answer button over the solving answer. Thanks ! \\n </s>