KEB COMBIVERT F5 Reference Manual page 212

LX - Special Function Parameters
LX13
Speed Following Error
LX14
Speed Difference
212
This parameter can be used to trigger a drive warning/error if the actual motor
speed deviates from the contract speed or command speed by more than the
window defined in parameter LX14.
This function only works in closed loop speed control mode (i.e. LC01 = Closed
Loop FOC, Closed Loop Analog Pretorque, Closed Loop Digital Pretorque,
Closed Loop Synthetic Pretorque).
Setting:
Warning - Digital
Output
On with Error
% of contract
speed
On with Error
% of command
speed
Default = Warning- Digital Output (0)
i
The time window for which the duration of LX14 Speed Difference must
occur for the Speed Following Error is fixed at 1.0 sec.
Sets the +/- window for the speed following error in percent of the contract
speed.
Description:
Speed following error drops output programmed
as ' A t Speed' . Warning is then to be handled
externally to the drive.
Speed following error drops ' A t Speed' output
and drive trips into error "Speed Following Error"
when actual motor speed deviates from contract
speed by more than the window defined in LX14.
Speed following error drops ' A t Speed' output
and drive trips into error "Speed Following Error"
when actual motor speed deviates from the
command speed by more than window defined
in LX14. For speeds below 10 FPM the fault will
be triggered when the difference between the
command speed and motor speed is at a fixed
speed value dependent on the Machine Data
parameters LN01-05.
Default = 10%
NUM
0
1
2