Danfoss VLT AutomationDrive FC 361 Programming Manual page 65

Parameter Descriptions
4-21 Speed Limit Factor Source
Option: Function:
[2] Analog in 53
[4] Analog in 53
inv
[6] Analog in 54
[8] Analog in 54
inv
[10] Analog in
X30-11
[12] Analog in
X30-11 inv
[14] Analog in
X30-12
[16] Analog in
X30-12 inv
4.5.3 4-3* Motor Feedback Monitoring
The parameter group includes monitoring and handling of
motor feedback devices, such as encoders, resolvers, and
so on.
4-30 Motor Feedback Loss Function
Option: Function:
This function is used to monitor
consistency in the feedback signal,
that is if the feedback signal is
available.
Select which action 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 by the value set in
parameter 4-31 Motor Feedback
Speed Error for longer than the
value set in parameter 4-32 Motor
Feedback Loss Timeout.
[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
Warning 90, Feedback monitor is active as soon as the value
in parameter 4-31 Motor Feedback Speed Error is exceeded,
regardless of the setting in parameter 4-32 Motor Feedback
MG06J202
Programming Guide
Loss Timeout. Warning/Alarm 61, Feedback Error is related to
the motor feedback loss function.
4-31 Motor Feedback Speed Error
Range:
300 RPM
Speed
[rpm]
Illustration 4.24 Motor Feedback Speed Error
4-32 Motor Feedback Loss Timeout
Range:
Size
related
*
4.5.4 4-4* Speed Monitor
4-40 Warning Freq. Low
Range:
Size
related
*
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Function:
[1 - 600 Select the maximum allowed error
*
RPM] in speed (output speed vs.
feedback).
n
calc
n
actual
P 4-31
P 4-32
Function:
[0 - 60 s] Set the timeout value allowing the
speed error set in
parameter 4-31 Motor Feedback
Speed Error to be exceeded before
enabling the function selected in
parameter 4-30 Motor Feedback Loss
Function.
Function:
[ 0 - par. 4-41 When the motor speed falls below
Hz] this limit, the display reads SPEED
LOW. The LCP warning light is not
turned on when this parameter set
limit is reached. Warning bit 10 is
set in parameter 16-94 Ext. Status
Word, the output relay or the digital
output can be configured to
indicate this warning.
4 4
Time
[sec]
63