ERRD is a register that provides the code value of the last fault according to the CIA402 profile. CIA402 is a general canopen profile for any variable-speed drive. Moreover, ERRD code carries the code of last error that occurred, so even if the drive fault has been reset, the ERRD is still non-zero.
Canopen error codes related to variable speed drives (CIA402) are split into many types, each having a unique code value, though variable speed drives may identify several different faults that are recognized as one type in CIA402.
For example, 16#7300 is a thermal sensor error. On the drive as we can have many thermal sensors and on a different input, moreover PTC short-circuit or PTC open circuit.
Summary:
If the non-zero value from ERRD is read, this doesn't mean that the drive is actually at fault. Indeed ERRD is the last error that occurred.
ERRD code is split into several types, common for generic variable speed drives. ERRD should be considered as "there is or was a fault on the canopen node, but for more details look at the drive or read the FLT parameter."
LFT is the register of the last fault code on the Altivar. This is a “Schneider” parameter and give you more detailed information about the fault.
LFT register address and its content can be found in associated Altivar document with communication parameters.
For example for Altivar ATV900 series:
https://www.se.com/uk/en/download/document/NHA80944/.
Canopen error codes related to variable speed drives (CIA402) are split into many types, each having a unique code value, though variable speed drives may identify several different faults that are recognized as one type in CIA402.
For example, 16#7300 is a thermal sensor error. On the drive as we can have many thermal sensors and on a different input, moreover PTC short-circuit or PTC open circuit.
Summary:
If the non-zero value from ERRD is read, this doesn't mean that the drive is actually at fault. Indeed ERRD is the last error that occurred.
ERRD code is split into several types, common for generic variable speed drives. ERRD should be considered as "there is or was a fault on the canopen node, but for more details look at the drive or read the FLT parameter."
LFT is the register of the last fault code on the Altivar. This is a “Schneider” parameter and give you more detailed information about the fault.
LFT register address and its content can be found in associated Altivar document with communication parameters.
For example for Altivar ATV900 series:
https://www.se.com/uk/en/download/document/NHA80944/.
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