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 250.000MOTOR.PITCH mm/s 0.000 to 250,000.000MOTOR.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 60.000MOTOR.PITCH mm/s 60,000.04MOTOR.PITCHMOTOR.PITCHµm/s 300.000 custom units/s
Data Type	Float
Start Version	M_01-00-00-000

Variant	Supported
MKD EtherCAT ***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	Yes
AKD-N	Yes
MKD-N	Yes
MKD-C	No

EtherCAT CoE and CANopen
Index/Subindex	Object Start Version
3627h/0	M_01-00-00-000