Danfoss VLT AQUA Drive FC 200 Programming Manual page 78

Parameter Description
Ref.
(RPM)
High
ref.
value
P 5-53/
3 3
p 5-58
Low
ref.
value
P 5-52/
p 5-57
Low freq.
P 5-50/
P 5-55
Figure 3.26
5-50 Term. 29 Low Frequency
Range:
100 Hz [0 - 110000
*
Hz]
5-51 Term. 29 High Frequency
Range:
100 Hz [0 - 110000
*
Hz]
5-52 Term. 29 Low Ref./Feedb. Value
Range:
0 [-999999.999 -
*
999999.999 ]
5-53 Term. 29 High Ref./Feedb. Value
Range:
100 [-999999.999 -
*
999999.999 ]
5-54 Pulse Filter Time Constant #29
Range:
100 ms [1 - 1000
*
ms]
3-52
®
VLT AQUA Drive Programming Guide
High freq.
P 5-51/
P 5-56
Function:
Enter the low frequency limit
corresponding to the low motor shaft
speed (i.e., low reference value) in
5-52 Term. 29 Low Ref./Feedb. Value.
Refer to the diagram in this section.
Function:
Enter the high frequency limit
corresponding to the high motor shaft
speed (i.e. high reference value) in
5-53 Term. 29 High Ref./Feedb. Value.
Function:
Enter the low reference value limit for
the motor shaft speed [RPM]. This is
also the lowest feedback value, see
also 5-57 Term. 33 Low Ref./Feedb.
Value.
Function:
Enter the high reference value
[RPM] for the motor shaft speed
and the high feedback value, see
also 5-58 Term. 33 High Ref./Feedb.
Value.
Function:
Enter the pulse filter time constant. The
pulse filter dampens oscillations of the
feedback signal, which is an advantage if
there is a lot of noise in the system. A
MG20O622 - VLT
5-54 Pulse Filter Time Constant #29
Range:
NOTICE!
This parameter cannot be adjusted while the motor is
running.
Input
5-55 Term. 33 Low Frequency
(Hz)
Range:
100 Hz [0 - 110000
*
Hz]
5-56 Term. 33 High Frequency
Range:
100 Hz [0 - 110000
*
Hz]
5-57 Term. 33 Low Ref./Feedb. Value
Range:
0 [-999999.999 -
*
999999.999 ]
5-58 Term. 33 High Ref./Feedb. Value
Range:
100 [-999999.999 -
*
999999.999 ]
5-59 Pulse Filter Time Constant #33
Range:
100 ms [1 - 1000
*
ms]
NOTICE!
This parameter cannot be adjusted while the motor is
running.
®
is a registered Danfoss trademark
Function:
high time constant value results in better
dampening but also increases the time
delay through the filter.
Function:
Enter the low frequency
corresponding to the low motor shaft
speed (i.e., low reference value) in
5-57 Term. 33 Low Ref./Feedb. Value.
Function:
Enter the high frequency
corresponding to the high motor shaft
speed (i.e., high reference value) in
5-58 Term. 33 High Ref./Feedb. Value.
Function:
Enter the low reference value [RPM]
for the motor shaft speed. This is also
the low feedback value, see also
5-52 Term. 29 Low Ref./Feedb. Value.
Function:
Enter the high reference value
[RPM] for the motor shaft speed.
See also 5-53 Term. 29 High Ref./
Feedb. Value.
Function:
Enter the pulse filter time constant. The
low-pass filter reduces the influence on,
and dampens oscillations in, the feedback
signal from the control.
This is an advantage, if, for example, there
is a great amount of noise in the system.