Description
VL.THRESH sets the user overspeed fault threshold. This threshold becomes the overall overspeed fault threshold (VL.VFTHRESH) if it is less than the motor speed threshold (1.2 x MOTOR.VMAX), and for MOTOR.TYPE = 6 if it is less than the motor back EMF overspeed threshold ((1.02 x 1000 x VBUS.OVFTHRESH) / (MOTOR.KE x sqrt(2))).
The value is considered an absolute value, hence it applies for both negative and positive velocities.
Example
VL.THRESH is set to 600 rpm. A velocity (VL.FB) of 700 rpm will generate an over speed fault.
General Information
|
Type |
NV Parameter |
|
Units |
Depends on UNIT.VROTARY or UNIT.VLINEAR Rotary: rpm, rps, deg/s, custom units/s, rad/s Linear: counts/s, mm/s, µm/s, custom units/s |
|
Range |
Rotary: 0.000 to 15,000.000 rpm 0.000 to 250.000 rps 0.000 to 90,000.000 deg/s 0.000 to 1,250.000 custom units/s 0.000 to 1,570.796 rad/s Linear: 0.000 to 1,073,741,824,000.000 counts/s 0.000 to 250.000*MOTOR.PITCH mm/s 0.000 to 250,000.000*MOTOR.PITCHMOTOR.PITCHµm/s 0.000 to 1,250.000 custom units/s |
|
Default Value |
Rotary: 3,600 rpm 60 rps 21,600.000 deg/s 300.000 custom units/s 376.991 rad/s Linear: 0.060 counts/s 60.000*MOTOR.PITCH mm/s 60,000.04*MOTOR.PITCHMOTOR.PITCHµm/s 300.000 custom units/s |
|
Data Type |
Float |
|
Start Version |
M_01-00-00-000 |
Variants Supported
| Variant | Supported |
|---|---|
| AKD Base | Yes |
| AKD with Position Indexer | Yes |
| AKD EtherCAT | Yes |
| AKD CANopen | Yes |
| AKD BASIC | Yes |
| AKD SynqNet | Yes* |
| AKD EtherNet/IP | Yes |
| AKD PROFINET | Yes |
| AKD Sercos® III | Yes |
| AKD-N | Yes |
| AKD-C | No |
*In SynqNet, a parameter may be available in the firmware but have no effect on the system. See SynqNet Supported Parameters.
Fieldbus Information
If your drive type is listed as supported but no index, address, or instance number is listed, then this parameter is accessible through WorkBench, but not over your fieldbus type.
| Index/Subindex | Object Start Version |
|---|---|
| 3627h/0 | M_01-00-00-000 |
| Fieldbus | Parameter | Address | Attributes | Signed? |
|---|---|---|---|---|
|
PROFINET |
VL.THRESH_32 | 2444 | DWord | Yes |
| Sercos® III | 8 Octets |
| Instance | Data Size | Data Type |
|---|---|---|
| 445 | 8 Byte Signed | Velocity |
| Register Address | Is 64 bit? | Attributes | Signed? | Object Start Version |
|---|---|---|---|---|
|
888 |
Yes | low 32 bit word | Yes | M_01-03-00-000 |
Related Topics
