Danfoss VLT AutomationDrive FC 301 Programming Manual page 87

Parameter Descriptions
4-34 Tracking Error Function
Option: Function:
[0] Disable
[1] Warning
[2] Trip
[3] Trip after
stop
Warning/Alarm 78, Tracking Error is related to the tracking
error function.
4-35 Tracking Error
Range: Function:
10 [1 - 600 Enter the maximum permissible speed error
RPM RPM] 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.
4-36 Tracking Error Timeout
Range: Function:
1 s [0 - 60 s] Enter the timeout period during which an error
*
greater than the value set in
parameter 4-35 Tracking Error is permissible.
4-37 Tracking Error Ramping
Range: Function:
100 [1 - 600 Enter the maximum permissible speed
RPM RPM] 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, the encoder measures
the speed.
4-38 Tracking Error Ramping Timeout
Range: Function:
1 s [0 - 60 s] Enter the timeout period during which an error
*
greater than the value set in
parameter 4-37 Tracking Error Ramping while
ramping is permissible.
4-39 Tracking Error After Ramping Timeout
Range: Function:
5 s [0 - 60 s] Enter the timeout period after ramping where
*
parameter 4-37 Tracking Error Ramping and
parameter 4-38 Tracking Error Ramping Timeout
are still active.
MG33ML02
Programming Guide
3.6.3 4-4* Speed Monitor
4-43 Motor Speed Monitor Function
Option:
[0] Disabled
*
[1] Warning
[2] Trip
[3] Jog
[4] Freeze
Output
[5] Max Speed
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Function:
NOTICE
This parameter is only available in the
flux control principle.
Select how the frequency converter reacts
when the motor speed monitor-function
detects overspeed or wrong rotation direction.
When the motor speed monitor is active, the
frequency converter detects an error if the
following conditions are true for a time period
specified in parameter 4-45 Motor Speed
Monitor Timeout:
•
The actual speed differs from the
reference speed in
parameter 16-48 Speed Ref. After
Ramp [RPM].
•
The difference between the speeds
exceeds the value in
parameter 4-44 Motor Speed Monitor
Max.
In speed closed loop, the actual speed is the
feedback from the encoder measured during
the time defined in parameter 7-06 Speed PID
Lowpass Filter Time. In open loop, the actual
speed is the estimated motor speed.
Speed
nRef
0rpm
-nRef
Solid line Parameter 16-48 Speed Ref. After
Ramp [RPM]
Dotted Parameter 4-44 Motor Speed
line Monitor Max
Illustration 3.32 Speed Reference and
Maximum Allowed Speed Difference
The frequency converter reports warning 101,
Speed monitor when the speed is outside the
limit.
The frequency converter trips and reports
alarm 101, Speed monitor.
3 3
Time
85