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 |  | 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 | | 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 | | 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 | | 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 | | 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 | | 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 | | 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 | | (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 | | (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 | | 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 | | 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 | | 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 | | 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 | | (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.
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