Danfoss VLT AutomationDrive FC 301 Programming Manual page 138

VLT AutomationDrive FC 301/302
Programming Guide
This parameter is only available with software version 48.XX.
Enter the maximum reference for the virtual master. The actual reference is set relative to this value using the source selected in
parameter 3-15 Reference Resource 1 or fieldbus reference 1. The rotation direction is controlled by the forward/reverse signal on a
digital input or fieldbus. Use parameter group 3-6* Ramp 3 to configure acceleration and deceleration.
Parameter 3-28 Master Offset Speed Ref
Table 212: Parameter 3-28 Master Offset Speed Ref
3-28 Master Offset Speed Ref
Default value: 1500 RPM
Conversion index: 67
This parameter is only available with software version 48.XX.
Enter the speed reference for changing the master offset in synchronization mode. To ensure compatibility with software versions
48.01 and 48.10, this parameter is only active when parameter 3-02 Minimum Reference is set to 0.
Parameter 3-29 Interpolation Time Period
Table 213: Parameter 3-29 Interpolation Time Period
3-29 Interpolation Time Period
Default value: Size related
Conversion index: 0
Set the time interval of the cyclic reference for CSV, CSP, or synchronizing. CSV: When providing only speed reference. Acceleration/
deceleration is interpolated based on this time interval. CSP/Synchronizing: When only providing position reference speed and ac-
celeration/deceleration is interpolated based on this time interval.
Index Range Description
[0], default 1 1–1000 The time period in seconds but actual time is scaled by index 1.
[1], default -3 -3–0 The exponent for the time period in index 0. Actual time = index 0 to the power of index 1. Example:
Index 0 = 1 and index 1 = -3 ⇒ time set in ms.
5.4.4 3-3* Gen Ramp & Sync
Parameter 3-32 Ramp Speed Ref
Table 214: Parameter 3-32 Ramp Speed Ref
3-32 Ramp Speed Ref
Default value: 0 RPM
Conversion index: 0
This parameter is only available with software version 48.XX.
Enter a value to specify the ramp speed reference. When 0 is specified, the ramp speed is selected based on the settings in parame-
ter 1-23 Motor Frequency for induction motors and parameter 1-25 Motor Nominal Speed for synchronous motors. When a value
greater than 0 is specified, the ramp speed reference is used to accelerate or decelerate irrespectively of motor type or data.
138 | Danfoss A/S © 2022.12
N O T I C E
Parameter type: Range, 0 - 65000 RPM
Data type: Uint16
N O T I C E
Parameter type: Range, Size related, Array [2]
Data type: Int16
Parameter type: Range, 0 - 1000000 RPM
Data type: Uint16
N O T I C E
Parameter Descriptions
Setup: All setups
Change during operation: True
Setup: All setups
Change during operation: True
Setup: All setups
Change during operation: True
AU275636650261en-000101 / 130R0334