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Why is my drive not storing parameter changes after a power cycle?

FA284375

23 January 2021

Issue:
Parameter changes made to the drive over a network (ModBus, CANopen, etc) reset to default values after a power cycle.

Product Line:
ATV31, ATV312, ATV12, ATV61, ATV71

Environment:
All part numbers.
Adjusments via network

Cause:
Parameter changes are made to RAM and not to EEPROM

Resolution:
Adjustments made over the network are stored to the operating memory (RAM) in the drive so it will be lost after a power cycle.
To have the settings stored to the EEPROM the customer must set Bit 1 of the CMI (Extended control word; address 8504) to 1.
This bit will reset to 0 after a save had been completed.

NOTE: The EEPROM has a limit to the number of times it can be written.  This is 1,000,000 writes for the ATV312.  ATV12, ATV61 and ATV71 are limited to 100,000 writes