ASCII - Command VCOMM    
Syntax Transmit VCOMM [Data]    
Syntax Receive VCOMM <Data>   Available in  
Type Variable rw   MMI No
ASCII Format Float   CANBus Object Number 365A (hex)
DIM rpm   PROFIBUS PNU 1946 (dec) IND = 1 (dec)
Range 0 .. 1.2 * MSPEED   DPR 346 (dec)
Default 1500    
Opmode All   Data Type Bus/DPR Integer32
Drive State -   Weighting 1000
Start Firmware 3.35    
Configuration No   Last Change of this Object 1.4
Function Group Amplifier   EEPROM Yes
Short Description Velocity Threshold for Commutation error


The command VCOMM defines the threshold for the commutation error function.
The definition of an commutation error is that the sign of the actual current has the right relationship to the sign of the change of the velocity of the motor. This indicates a run-away of the motor and causes a disable of the output stage.

This commutation error is supervised, if the actual velocity is above the VCOMM threshold. To disable the function, VCOMM has to be set to VLIM.