GE VAT2000 Instruction Manual

Also see for VAT2000 Series: Instruction manual Instruction manual

Contents

6. Control Functions and Parameter Settings6-766-7-2 Speed regulator (IM)The speed regulator (ASR) is configured of PI control, and has the following parameters.ParameterNo.Parameter FunctionA10-0 ASR response Set the required ASR response in radiansA10-1 Machine time constant1 Set the time to accelerate the motor and load to the basespeed at the rated motor torque.A10-2 Integral time constantcompensation coefficientSet the compensation coefficient applied on the integral timeconstant of the speed regulator (ASR).B13-6 ASR gain compensation inconstant power rangeThis sets the ASR P gain compensation value at the max.speed.By adjusting this parameter, the ASR P can be compensatedin the constant power range.If ASR hunting occurs in the sensor-less control's constantoutput range, set a smaller value.B30-2 ASR proportional changerate limitThis limit the ASR's Proportional block, if the speed settingvalue or motor speed change suddenly,.6-7-3 Motor Torque limit (IM)The output torque is limited. Set an appropriate value for protecting the load side.Drive torque limit) Set this to a large value to increase the torque during driving. Note that theoutput torque is limited by the output current limit (B18-0), so when setexcessively, the set torque may not be attained.Regenerative torque limit) Set this to a large value to increase the torque during regeneration. Notethat the output torque is limited by the output current limit (B18-0), so whenset excessively, the set torque may not be attained. If the DBR or PWMconverter, etc., are not provided and an excessively large setting is made,an overvoltage trip could occur during regeneration. In this case, lower theregeneration torque limit setting.ParameterNo.Parameter FunctionA10-3 ASR drive torque limit Drive torque limit in ASR control.A10-4 ASR regenerative torquelimitRegenerative torque limit in ASR control.A10-5 Emergency stopregenerative torque limitRegenerative torque limit value for emergency stop in ASRControl.A11-2 ACR drive torque limit Drive torque limit in ACR control.A11-3 ACR regenerative torquelimitRegenerative torque limit in ACR control.