Frequency Control Config Attributes

These are the Frequency Control Configuration attributes associated with the Frequency Control method of operation of a Motion Control Axis.
Slip Compensation Enable
Usage
Access
Data Type
Default
Min
Max
Semantics of Values
Optional - F(IM)
Set/GSV
USINT
1
Enumeration:
0 = Disabled
1 = Enabled
Slip Compensation Enable is used to enable or disable the slip compensation function when operating in any Frequency Control Method.
Frequency Control Method
Usage
Access
Data Type
Default
Min
Max
Semantics of Values
Required - F
Set/GSV
USINT
0
-
-
Enumeration
0 = Basic Volts/Hertz (R)
1-127 = Reserved
128 – 255 = Vendor Specific
128 = Fan/Pump Volts/Hertz (O)
129 = Sensorless Vector (O)
The Frequency Control Method attribute identifies the control method associated with the axis.
The Basic Volts/Hertz control method applies voltage to the motor generally in direct proportion to the commanded frequency or speed.
Sensorless Vector enhances the Basic Volts/Hertz algorithm by using current vectors Iq and Id for excellent control at low speeds.
Fan/Pump Volts/Hertz is based on the Basic Volts/Hertz but is tailored for fan/pump applications.
Sensorless Vector Economy applies the Sensorless vector algorithm but seeks to reduce energy consumption when the applied load is less than 50% or rating.
Maximum Voltage
Usage
Access
Data Type
Default
Min
Max
Semantics of Values
Required - F
Set/SSV
REAL
460
FD
0
Infinity symbol
Volts (RMS)
The Maximum Voltage attribute sets the highest phase-to-phase voltage that the drive device can output.
Maximum Frequency
Usage
Access
Data Type
Default
Min
Max
Semantics of Values
Required - F
Set/SSV
REAL
130
FD
0
Infinity symbol
Hertz
The Maximum Frequency attribute sets the highest frequency that the drive device can output.
Break Voltage
Usage
Access
Data Type
Default
Min
Max
Semantics of Values
Required - F
Basic V/Hz Only
Set/SSV
REAL
230
FD
0
Infinity symbol
Volts (RMS)
The Break Voltage attribute sets the phase-to-phase output voltage of the drive device at the Break Frequency where boost ends.
Break Frequency
Usage
Access
Data Type
Default
Min
Max
Semantics of Values
Required - F
Basic V/Hz Only
Set/SSV
REAL
30
FD
0
Infinity symbol
Hertz
The Break Frequency attribute sets the output frequency of the drive device at the Break Voltage where the boost ends.
Start Boost
Usage
Access
Data Type
Default
Min
Max
Semantics of Values
Required - F
Basic V/Hz Only
Set/SSV
REAL
8.5
FD
0
Infinity symbol
Volts (RMS)
The Start Boost attribute sets the phase-to-phase voltage boost level for starting and accelerating.
Run Boost
Usage
Access
Data Type
Default
Min
Max
Semantics of Values
Required - F
Basic V/Hz and Fan/Pump V/Hz Only
Set/SSV
REAL
8.5
FD
0
Infinity symbol
Volts (RMS)
The Run Boost attribute sets the phase-to-phase voltage boost level for steady-state speed or deceleration.
Current Limit Regulator Kp
Usage
Access
Data Type
Default
Min
Max
Semantics of Values
Optional - F
Set/SSV
REAL
290
0
Infinity symbol
Hz/Amp
The Current Limit Regulator Kp attribute sets the proportional gain that regulates the output frequency to help prevent overcurrent conditions. Effective during fast acceleration or large load step changes.
Current Limit Regulator Ki
Usage
Access
Data Type
Default
Min
Max
Semantics of Values
Optional - F
Set/SSV
REAL
680
0
Infinity symbol
(Hz/Amp)/Sec
The Current Limit Regulator Ki attribute sets the integral gain that regulates the output frequency to help prevent overcurrent conditions. Effective during fast acceleration or large load step changes.
Current Limit Regulator Kd
Usage
Access
Data Type
Default
Min
Max
Semantics of Values
Optional - F
Set/SSV
REAL
760
0
Infinity symbol
(Hz/Amp) - Sec
The Current Limit Regulator Kd attribute sets the derivative gain that regulates the output frequency to help prevent overcurrent conditions. Effective during fast acceleration or large load step changes.
Low Frequency Id Current Limit Regulator Kp
Usage
Access
Data Type
Default
Min
Max
Semantics of Values
Optional - F
Set/SSV
REAL
50
0
Infinity symbol
Volts/Amp
The Low Frequency Id Current Limit Regulator Kp attribute sets the proportional gain that regulates the output voltage to help prevent overcurrent conditions in the flux producing current (Id) component. This is effective during fast acceleration or large load step changes at low speed.
Low Frequency Iq Current Limit Regulator Kp
Usage
Access
Data Type
Default
Min
Max
Semantics of Values
Optional - F
Set/SSV
REAL
50
0
Infinity symbol
Volts/Amp
The Low Frequency Iq Current Limit Regulator Kp sets the proportional gain that regulates the output voltage to prevent overcurrent conditions in the torque producing current (Iq) component. This is effective during fast acceleration or large load step changes at low speed.
Sensorless Vector Economy Accel Decel Kp
Usage
Access
Data Type
Default
Min
Max
Semantics of Values
Optional - F (IM)
Sensorless Vector Economy only
Set/SSV
REAL
305
0
Infinity symbol
Volts/Amp
When the Frequency Control Method attribute is set for Sensorless Vector Economy operation, this value sets the proportional gain that the economy output voltage regulator uses to restore motor flux current back to the normal Sensorless Vector operational level in response to commanded acceleration or deceleration, or an increase in motor load torque.
This attribute is only applicable when the Frequency Control Method is configured for Sensorless Vector Economy.
Sensorless Vector Economy Accel Decel Ki
Usage
Access
Data Type
Default
Min
Max
Semantics of Values
Optional - F (IM)
Sensorless Vector Economy only
Set/SSV
REAL
100
0
Infinity symbol
Volts/Amp
When the Frequency Control Method attribute is set for Sensorless Vector Economy operation, this value sets the integral gain that the economy output voltage regulator to restore motor flux current back to the normal Sensorless Vector operational level in response to commanded acceleration or deceleration, or an increase in motor load torque.
Sensorless Vector Economy At Speed Ki
Usage
Access
Data Type
Default
Min
Max
Semantics of Values
Optional - F (IM)
Sensorless Vector Economy only
Set/SSV
REAL
200
0
Infinity symbol
(Volts/Amp)/Sec
When the Frequency Control Method attribute is set for Sensorless Vector Economy operation, this value sets the ramp rate of the economy function that slowly reduces drive output voltage and motor flux current to save energy while the motor is running at constant speed under light load conditions.
Sensorless Vector Boost Filter Bandwidth
Usage
Access
Data Type
Default
Min
Max
Semantics of Values
Optional - F (IM)
Sensorless Vector Economy only
Set/SSV
REAL
2
0
10
3
Filter Frequency Units
The Sensorless Vector Boost Filter Bandwidth attribute sets the bandwidth of the Iq feedback filter used to calculate the amount of voltage boost to apply to the motor as a function of load torque. The voltage boost is the product of the filtered Iq signal and the stator resistance of the motor.
Provide Feedback
Have questions or feedback about this documentation? Please submit your feedback here.