AC Line Condition Attributes
These are the Motion Control Axis attributes pertaining to various conditions of the AC Line input primarily for a Regenerative Converter.
AC Line Voltage Sag Action
Usage | Access | Data Type | Default | Min | Max | Semantics of Values |
|---|---|---|---|---|---|---|
Optional - G | Set/SSV | USINT | 1 | - | - | Enumeration: 0 = Continue (O) 1 = Ride Thru (R) 2-127 = Reserved 128-255 = Vendor Specific |
The AC Line Voltage Sag Action sets the reaction to a Voltage Sag condition when any one of the AC Line phase voltages drops below a hard-coded threshold in the device or the configured AC Line Voltage Sag Threshold. This provides a specific (configured) response to an incoming AC Line Voltage Sag condition while the device is running.
See Power Loss Action for semantics of these enumerated actions.
AC Line Voltage Sag Threshold
Usage | Access | Data Type | Default | Min | Max | Semantics of Values |
|---|---|---|---|---|---|---|
Optional - G | Set/SSV | REAL | 50 | 0 | 10 3 | % of Nominal |
The AC Line Voltage Sag Threshold attribute sets the level for AC Line Voltage Sag as percent of nominal AC Line Voltage. Nominal voltage is defined by the AC Line Voltage Nominal attribute. Measured AC Line Voltage values less than this threshold indicate an AC Line Voltage Sag condition.
AC Line Voltage Sag Time
Usage | Access | Data Type | Default | Min | Max | Semantics of Values |
|---|---|---|---|---|---|---|
Optional - G | Set/SSV | REAL | 1 | 0 |  | Seconds |
When the AC Line Voltage Sag Action is set to Ride Thru, this attribute sets the timeout value before an AC Line Voltage Sag exception is generated by the device in response to a Voltage Sag condition. A value of 0 in this case results in an immediate exception.
Converter Input Phase Loss Action
Usage | Access | Data Type | Default | Min | Max | Semantics of Values |
|---|---|---|---|---|---|---|
Optional - G | Set/SSV | USINT | 1 | - | - | Enumeration: 0 = Continue (O) 1 = Ride Thru (R) 2-127 = Reserved 128-255 = Vendor Specific |
The Converter Input Phase Loss Action attribute sets the reaction to an AC input phase loss condition. This provides a specific (configured) response to an incoming phase loss while the converter is running.
See Power Loss Action for semantics of these enumerated actions.
Converter Input Phase Loss Threshold
Usage | Access | Data Type | Default | Min | Max | Semantics of Values |
|---|---|---|---|---|---|---|
Optional - ND | Set | REAL | 1 | 0 | % Harmonic Ratio 100 * (Magnitude of 2nd harmonic / Magnitude of 6th harmonic) |
The Converter Input Phase Loss Threshold attribute sets the detection level of an AC input phase loss condition when using a Passive AC/DC converter. The phase loss is detected by analyzing DC Bus voltage harmonics.
The function measures the DC Bus voltage and calculates the % Harmonic Ratio of the 2nd and 6th harmonics. The axis asserts the Converter AC Single Phase Loss Exception when the calculated % Harmonic Ratio exceeds this threshold.
When three phases are connected, the 6th harmonic is larger than the 2nd harmonic. When one phase is disconnected, the second harmonic is larger than the 6th harmonic. Therefore, the % Harmonic Ratio of 2nd / 6th will be less than 100% when three phases are connected and will be greater than 100% when one phase is connected.
Converter Input Phase Loss Time
Usage | Access | Data Type | Default | Min | Max | Semantics of Values |
|---|---|---|---|---|---|---|
Optional - G | Set/SSV | REAL | 1 | 0 | | Seconds |
When the Converter Input Phase Loss Action is set to Ride Thru, this attribute sets the timeout value before a Converter AC Phase Loss Exception is generated by the device in response to the Converter Input Phase Loss condition. A value of 0 in this case results in an immediate exception.
AC Line Frequency Change Action
Usage | Access | Data Type | Default | Min | Max | Semantics of Values |
|---|---|---|---|---|---|---|
Optional - G | Set/SSV | USINT | 1 | - | - | Enumeration: 0 = Continue (O) 1 = Ride Thru (R) 2-127 = Reserved 128-255 = Vendor Specific |
The AC Line Frequency Change Action attribute sets the converter’s reaction when the rate of change of the AC line frequency exceeds a hard-coded threshold or the configured Frequency Change Threshold.
See Power Loss Action for details of these enumerated actions.
AC Line Frequency Change Threshold
Usage | Access | Data Type | Default | Min | Max | Semantics of Values |
|---|---|---|---|---|---|---|
Optional - G | Set/SSV | REAL | 100 | 0 | 10 3 | Hertz/Seconds |
The AC Line Frequency Change Threshold attribute sets the level of AC line frequency change that results in the AC Line Frequency Change condition.
AC Line Frequency Change Time
Usage | Access | Data Type | Default | Min | Max | Semantics of Values |
|---|---|---|---|---|---|---|
Optional - G | Set/SSV | REAL | 1 | 0 | | Seconds |
When the AC Line Frequency Change Action is set to Ride Thru, this attribute sets the timeout value before an AC Line Frequency Change exception is generated by the converter in response to an AC Line Frequency Change condition. A value of 0 in this case results in an immediate exception.
AC Line Sync Loss Action
Usage | Access | Data Type | Default | Min | Max | Semantics of Values |
|---|---|---|---|---|---|---|
Optional - G | Set/SSV | USINT | 1 | - | - | Enumeration: 0 = Continue (O) 1 = Ride Thru (R) 2-127 = Reserved 128-255 = Vendor Specific |
The AC Line Sync Loss Action attribute sets the reaction to a loss of AC line synchronization by the converter’s line synchronization function (for example, PLL). This provides a specific (configured) response to an incoming line synchronization loss condition while the converter is running.
See Power Loss Action for details of these enumerated actions.
AC Line Sync Loss Time
Usage | Access | Data Type | Default | Min | Max | Semantics of Values |
|---|---|---|---|---|---|---|
Optional - G | Set/SSV | REAL | 1 | 0 | | Seconds |
When the AC Line Sync Loss Action is set to Ride Thru, this attribute sets the timeout value before an AC Line Sync exception is generated by the converter in response to an AC Line Sync Loss condition. A value of 0 in this case results in an immediate exception.
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