Danfoss VLT AutomationDrive FC 361 Programming Guide

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 diers 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
Loss Timeout. Warning/Alarm 61, Feedback Error is related to
the motor feedback loss function.
4-31 Motor Feedback Speed Error
Range: Function:
300 RPM* [1 - 600
RPM]
Select the maximum allowed error
in speed (output speed vs.
feedback).
Time
[sec]
Speed
[rpm]
n
calc
n
actual
P 4-32
130BA221.10
P 4-31
Illustration 4.24 Motor Feedback Speed Error
4-32 Motor Feedback Loss Timeout
Range: Function:
Size
related*
[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.
4.5.4 4-4* Speed Monitor
4-40 Warning Freq. Low
Range: Function:
Size
related*
[ 0 - par. 4-41
Hz]
When the motor speed falls below
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 congured to
indicate this warning.
Parameter Descriptions Programming Guide
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Danfoss VLT AutomationDrive FC 361 Specifications

General

Brand	Danfoss
Model	VLT AutomationDrive FC 361
Category	DC Drives
Language	English