4/18/2023 12:50 AM | |
Joined: 9/26/2020 Last visit: 3/11/2024 Posts: 12 Rating:
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Hello, Recently I faced with F72 error on my 5 V20 VFDs I'm using USS protocol to control machine VFDs, I already used the same method in several machines and never had a problem, I following Siemens recommendation and samples for my parameterization and programming. There's already decent amount of machine currently working with now problem Im using "USS port scan" FB in cyclic interrupt and the " USS Drive Control" FB for each VFD in use (it use the same DB, Same like in Siemens example) Here are the following parameters i setup for the USS: P0700 = 5 P1000 = 5 P2023 = 1 P2010 = 6 P2011 = 1,2,3,4,5 (depends on the VFD position, 5 VFDs in total) P2012 = 2 P2013 = 4 P2014 = 2000 So here is the problem, the VFDs 1,2,4,5 working fine, receiving the speed reference and reacting on start/stop commands via USS without any problem. Also VFD 3 receiving the speed setpoint OK but I found out that this VFD USS Drive block is Inhibited, once I reset the block and trying to run it again, the VFD seems to trying go up to the setpoint seed for around 2 seconds then I receive F72 in all 5 VFDs, and immediately the block become inhibited again . As long as I'm not starting that VFD no.3 all the rest are acting normal. I re-parameterized this VFD several times already but no success so far. Im attaching the drive XML file from Smart access for the reference, please take a look if you find something suspicious please let me know, appreciate it very much thanks AttachmentDR74_.txt (354 Downloads) |
4/18/2023 2:37 PM | |
Joined: 10/11/2006 Last visit: 8/12/2024 Posts: 5889 Rating:
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Hello Vadimcougar , I would recommend to take a look at parameter p2014. The appropriate setting also depends on the communication settings and the number of drives involved. |
With best regards, |
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4/20/2023 8:29 AM | |
Joined: 10/11/2006 Last visit: 8/12/2024 Posts: 5889 Rating:
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Hello Vadimcougar, |
With best regards, |
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4/21/2023 6:17 PM | |
Joined: 9/26/2020 Last visit: 3/11/2024 Posts: 12 Rating:
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Thank you ill check |
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