2
EE Checksum Error
Vacon · X4 AC Drive
What does 2 mean?
This fault indicates a memory problem, such as an issue during reflashing, a conflict within the drive's memory, or an inability to write parameters. It can also occur if Modbus write requests are too frequent, overwhelming the drive's processing capability. This typically suggests corrupted memory or communication overload.
Additional Steps
Steps 1–2 are listed in Priority Fix.
- 3
If the problem persists after resetting and checking Modbus frequency, consult the factory for further assistance as it may indicate a deeper memory or hardware issue.
Source: Vacon X4 AC Drive
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