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Siemens SINAMICS G120 Drive
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Feb 02, 2026 11:50 am
i have siemens g120 drive and my vfd showing A8526 fault in running condition and after power recycle then drive running fine. Please suggest how to correct this fault.
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Feb 03, 2026 6:02 am
Fault A08526 on a Siemens SINAMICS G120 indicates " PROFINET: No cyclic connection," meaning the drive has lost communication with the PLC.
Common causes include incorrect device names, faulty wiring, or a missing connection. Solutions involve verifying PROFINET names, checking cable connections, or disabling the bus protocol (p2030=0) if not using PROFINET