How to set the gearbox ratio in the 6SE70 inverter - News - Global IC Trade Starts Here.

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Because there is a change in gearbox ratio with the motor (the original gearbox ratio is 2.33, now 2.8), so do you need to adjust the gear ratio in the inverter parameters? ! Check the parameter U802 "gearratio" in the vector encyclopedia, but found that our inverter is uniformly set to the value "30", it seems that this parameter is not used. So I don't know if it is set? A: plc controls the inverter, mainly sends the main control word, speed reference, etc. If it is speed control, its rotation speed depends on the speed reference from the PLC, and the motor goes through the reducer to the roller and other mechanical equipment, and its reduction ratio is changed. If the given setting of the PLC is unchanged, the final actual speed is definitely wrong. Therefore, the given value must be modified and modified in the PLC modification program or in the inverter P444 (=2.33/2.8).