VL.THRESH

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 (pg 1) or UNIT.VLINEAR (pg 1)

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.PITCH µm/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.PITCH µm/s

300.000  custom units/s

Data Type

Float

Start Version

M_01-00-00-000

FieldbusClosedA Fieldbus is an industrial network system for real-time distributed control (e.g. CAN or Profibus). It is a way of connecting instruments in a plant design

Index/Subindex

Object Start Version

EtherCATClosed***EtherCAT is an open, high-performance Ethernet-based fieldbus system. The development goal of EtherCAT was to apply Ethernet to automation applications which require short data update times (also called cycle times) with low communication jitter (for synchronization purposes) and low hardware costs COE and CANopen

/0

M_01-00-00-000

Related Topics

Velocity Loop | VL.CMD | VL.CMDU | VL.VFTHRESH