Adjustable Warnings; Tracking Error Function; Tracking Error Timeout; Tracking Error Ramping - Danfoss VLT AutomationDrive Programming Manual

Parameter Descriptions
3 3
4-32 Motor Feedback Loss Timeout
Range:
0.05 s [0.00 - 60.00 s] Set the timeout value allowing the
*

4-34 Tracking Error Function

Option:
[0] Disable
*
[1] Warning
[2] Trip
[3] Trip after
stop
Warning/Alarm 78 Tracking Error is related to the Tracking
Error Function.
3-46
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FC 300 Programming Guide
Function:
speed error set in 4-31 Motor Feedback
Speed Error to be exceeded.
Function:
Select which reaction the Adjustable frequency
drive 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 Frequency).
The reaction will be activated if the measured
difference is more than specified in
4-35 Tracking Error for the time specified in

4-36 Tracking Error Timeout.

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 for loads that are too big.
MG33MD22 - VLT
4-35 Tracking Error
Range:
10 RPM [1 - 600
*
RPM]
4-36 Tracking Error Timeout
Range:
1.00 s [0.00 - 60.00 s] Enter the timeout period during which
*

4-37 Tracking Error Ramping

Range:
100 RPM [1 - 600
*
RPM]
4-38 Tracking Error Ramping Timeout
Range:
1.00 s [0.00 - 60.00
*
s]
4-39 Tracking Error After Ramping Timeout
Range:
5.00 s [0.00 - 60.00 s] Enter the timeout period after ramping
*

3.6.3 4-5* Adjustable Warnings

Use these parameters to adjust warning limits for current,
speed, reference and feedback. Warnings that are shown
on the display can be programmed as an output or sent
via serial bus.
Warnings are shown on display, programmed output or
serial bus.
®
is a registered Danfoss trademark
Function:
Enter the maximum permissible speed
error between the motor speed and the
output of the ramp when not ramping. In
open-loop, the motor speed is estimated,
and in closed-loop, it is the feedback from
encoder/resolver.
Function:
an error greater than the value set in
4-35 Tracking Error is permissible.
Function:
Enter the maximum permissible speed
error between the motor speed and the
output of the ramp when ramping. In
open-loop, the motor speed is estimated,
and in closed-loop, it is the feedback
from encoder/resolver.
Function:
Enter the timeout period during which
an error greater than the value set in
4-37 Tracking Error Ramping while
ramping is permissible.
Function:
where 4-37 Tracking Error Ramping and
4-38 Tracking Error Ramping Timeout are
still active.