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Goals and Symptoms
I attended the ATV71 CT training in September.
We have a customer that is asking if we have
a 'white paper' on ATV71 Load Sharing.
Do you know if we have a paper on this feature?
Or possibly some other documentation?
Causes and Fixes
We don't have more than the training module concerning the load sharing, this document has been created from the development file where there are the same synoptic. However I attach the load sharing training module.
. When LBA is equal to NO, the load balance function is not activated
. When LBA is equal to YES, the load balance function is activated, and the correction using torque reference allows to reduce or increase the speed of the motor depending on the load.
. The load balance speed correction could be adjusted by parameter :
. LBF : adjust the time constant (low filter) of the torque reference
. LBC : define the nominal speed load balance correction
. LBC1 : define the low speed for torque decreasing function speed reference
. LBC2 : define the high speed for torque decreasing function speed reference
. LBC3 : define the torque offset for torque correction
. The load balance speed correction is equal at : LoadBalanceSpeedCor = K1*K2 (see the diagram in training module)
This function is used only in SVC vector control.
Default value :
LBC = 0Hz
LBF = 100ms