Danfoss FC 300 Programming Manual page 64

Parameter Descriptions
4-21 Speed Limit Factor SourceOption
Option:
[8] Analog input 54 inv
[10] Analog input X30-11
[12] Analog input X30-11
3 3
inv
[14] Analog input X30-12
[16] Analog input X30-12
inv
3.6.2 4-3* Motor Feedback Monitoring
The par. group includes monitoring and handling of motor
feedback devices as encoders, resolvers etc.
4-30 Motor Feedback Loss Function
Option:
[0] Disabled
[1] Warning
[2] Trip
*
[3] Jog
[4] Freeze Output
[5] Max Speed
[6] Switch to Open Loop
[7] Select Setup 1
[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] Select the max allowed tracking error
*
64
FC 300 Programming Guide
Function:
Function:
Select which reaction the frequency
converter should take if a feedback
fault is detected. The selected action
is to take place when the feedback
signal differs from the output speed
where its range is specified in
par. 4-31 Motor Feedback Speed Error
during its time frame set in
par. 4-32 Motor Feedback Loss
Timeout.
Function:
in speed from the calculated and the
actual mechanical shaft output speed.
MG.33.M9.02 - VLT
4-32 Motor Feedback Loss Timeout
Range:
0.05 s [0.00 - 60.00 s] Set the timeout value allowing the speed
*
4-34 Tracking Error Function
Option: 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 -
compensated 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.
[0] Disable
*
[1] Warning
[2] Trip
[3] Trip after
stop
®
is a registered Danfoss trademark
Function:
error set in par. 4-31 Motor Feedback
Speed Error to be exceeded.