Danfoss VLT FC 100 Series

5-51 Term. 29 High Frequency
Option: Function:
[100Hz] *
0 - 110000 Hz Enter the high frequency limit corresponding to the high motor shaft speed (i.e. high reference value) in par.
5-53.
5-52 Term. 29 Low Ref./Feedb. Value
Range: Function:
0.000 * [-999999.999 -
999999.999]
Enter the low reference value limit for the motor shaft speed [RPM]. This is also the lowest feedback value, see
also par. 5-57.
5-53 Term. 29 High Ref./Feedb. Value
Range: Function:
100.000 * [Par. 5-52 - 1000000.000]
Enter the high reference value [RPM] for the motor shaft speed and the high feedback value, see also par. 5-58.
5-54 Pulse Filter Time Constant #29
Range: Function:
100 ms * [1 - 1000 ms]
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 high time constant value results in better dampening but also
increases the time delay through the filter.
This parameter cannot be adjusted while the motor is running.
5-55 Term. 33 Low Frequency
Range: Function:
100Hz * [0 - 110000 Hz]
Enter the low frequency corresponding to the low motor shaft speed (i.e. low reference value) in par. 5-57.
5-56 Term. 33 High Frequency
Range: Function:
100Hz * [0 - 110000 Hz]
Enter the high frequency corresponding to the high motor shaft speed (i.e. high reference value) in par. 5-58.
5-57 Term. 33 Low Ref./Feedb. Value
Range: Function:
0.000 * [-100000.000 – par. 5-58]
Enter the low reference value [RPM] for the motor shaft speed. This is also the low feedback value, see also par.
5-52.
5-58 Term. 33 High Ref./Feedb. Value
Range: Function:
100.000 * [Par. 5-57 - 100000.000]
Enter the high reference value [RPM] for the motor shaft speed. See also par. 5-53
Term. 29 High Ref./Feedb.
Value
.
5-59 Pulse Filter Time Constant #33
Range: Function:
100 ms [1 - 1000 ms] Enter the pulse filter time constant. The low-pass filter reduces the influence on and dampens oscillations on the
feedback signal from the control.
This is an advantage, e.g. if there is a great amount on noise in the system. This parameter cannot be adjusted
while the motor is running.
3. Parameter Description VLT
®
HVAC Drive Programming Guide
76 MG.11.C5.02 - VLT
®
is a registered Danfoss trademark
3