Danfoss VLT AutomationDrive FC 300 Programming Manual page 89

3 Parameter descriptions
[1] Warning
[2] * Trip
[3] Jog
[4] Freeze Output
[5] Max Speed
[6] Switch to Open Loop
[7] Select Setup 1
3
[8] Select Setup 2
[9] Select Setup 3
[10] Select Setup 4
[11] stop & trip
4-31 Motor Feedback Speed Error
Range:
300 RPM* [1 - 600 RPM]
4-32 Motor Feedback Loss Timeout
Range:
0.05 s* [0.00 - 60.00 s]
4-34 Tracking Error Function
Option:
[0] * Disable
[1] Warning
[2] Trip
88
Function:
Select the max allowed tracking error in speed from the calculated and the actual mechanical shaft
output speed.
Function:
Set the timeout value allowing the speed error set in par. 4-31
exceeded.
Function:
Select which reaction the frequency converter should take if a tracking error is detected.
Closed Loop: The tracking error is measured between the output from the ramp generator and the
speed feedback (filtered).
Open Loop: The tracking error is measured between the output from the ramp generator - com-
pensated for slip - and the frequency that is sent to the motor (16-13).
The reaction will be activated if the measured difference is more than specified in par. 4-35 for the
time specified in par. 4-36.
A tracking error in closed loop does not imply that there is a problem with the feedback signal! A
tracking error can be the result of torque limit at too big loads.
®
MG.33.M8.02 - VLT is a registered Danfoss trademark
FC 300 Programming Guide
Motor Feedback Speed Error
to be