Danfoss VLT Automation Drive FC 360, Programming Manual

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4-21 Speed Limit Factor Source
Select an analog input for scaling the settings in
parameter 4-19 Max Output Frequency from 0% to 100% (or
inverse). The signal levels corresponding to 0% and 100% are
defined in the analog input scaling, for example, parameter
group 6-1* Analog Input 1. This parameter is only active when
parameter 1-00 Configuration Mode is in torque mode.
Option: Function:
[0]
*
No function
[2] Analog in 53
[4] Analog in 53 inv
[6] Analog in 54
[8] Analog in 54 inv
4-22 Break Away Boost
Option: Function:
[0]
*
Off
[1] On The frequency converter provides higher current than
normal current levels to enhance breakaway-torque
capacity.
4.5.3 4-3* Motor Feedback Monitoring
NOTICE
Warning 90 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.
4-30 Motor Feedback Loss Function
Option: Function:
This function is used to monitor for
consistency in feedback signal, that is, if the
feedback signal is available. Select the action
of the frequency converter if a feedback fault
is detected. The selected action takes 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
4-31 Motor Feedback Speed Error
Range: Function:
20 Hz
*
[0 - 50 Hz] 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 4.10 Motor Feedback Speed Error
4-32 Motor Feedback Loss Timeout
Range: Function:
0.05 s
*
[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* Adjustable Warnings 2
4-40 Warning Freq. Low
Range: Function:
Size
related
*
[ 0 -
400
Hz] Use this parameter for setting a lower limit
for the frequency range. When the motor
speed drops below this limit, the display
reads
Speed low . Warning bit 10 is set in
parameter 16-94 Ext. Status Word . Output relay
can be configured to indicate this warning.
LCP warning light is not lit when the limit set
is reached.
4-41 Warning Freq. High
Range: Function:
Size
related
*
[ 0 -
400
Hz] Use this parameter for setting a higher limit
for the frequency range. When the motor
speed exceeds this limit, the display reads
Speed high . Warning bit 9 is set in
parameter 16-94 Ext. Status Word . Output relay
can be configured to indicate this warning.
Parameter Descriptions Programming Guide
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