Parker AC30 series User Manual

Parameter Reference C-119
AC30 series Variable Speed Drive
MRAS
Parameters::Motor Control::MRAS
These parameters are associated to the internal induction motor speed estimator (MRAS) module.
Parameter Name
No.
Path
Default
Range
Units
Writable
MRAS Speed Percent 286
Parameters::Motor Control::MRAS
x.xx Min to Max %
NEVER
Diagnostic parameter that dispays speed calculated by the estimator as percent.
MRAS Speed RPM
1634
Parameters::Motor Control::MRAS
x.xx 0.000 to 30.000 s
NEVER
Diagnostic parameter that dispays speed calculated by the estimator as RPM.
MRAS Field Frequency
1635
Parameters::Motor Control::MRAS
x.xx 0.000 to 30.000
Hz
NEVER
Diagnostic parameter that dispays field frequency (electrical frequency) that the estimator provides for vector rotation.
MRAS Torque Percent
1560
Parameters::Motor Control::MRAS
x.xx
Min to Max %
NEVER
Diagnostic parameter that dispays torque calculated by the estimator as percent.
MRAS Torque
1634
Parameters::Motor Control::MRAS
x.xx
0.000 to 30.000
Nm
NEVER
Diagnostic parameter that dispays torque calculated by the estimator as Nm.
Switchover Enable
1701
1635
Parameters::Motor Control::MRAS ALWAYS
A boolean that enables or disables the ability to automatically switch into sensorless operation in the case of an encoder failure. Not on
the AC30V

Parker AC30 series Specifications

General

Control Modes	Closed-loop vector
Feedback	Encoder
Operating Temperature	0 to 40°C (32 to 104°F) standard, -20 to 50°C (-4 to 122°F) with derating
Protection	Overcurrent, Overvoltage, Undervoltage
Communication	RS485