Danfoss FC 300 Design Manual page 174

FC 300 Design Guide
5-5* Pulse Input
The pulse input parameters are used to define an
appropriate window for the impulse reference
area by configuring the scaling and filter settings
for the pulse inputs. Input terminals 29 or 33 act
as frequency reference inputs. Set terminal 29
(par. 5-13) or terminal 33 (par. 5-15) to Pulse in-
put [32]. If terminal 29 is used as an input, then
set par. 5-01 to Input [0].
5-50 Term. 29 Low Frequency
Value:
0 - 110000 Hz
Function:
Enter the low frequency limit corresponding to the
low motor shaft speed (i.e. low reference value)
in par. 5-52. Refer to the diagram in this section.
This parameter is available for FC 302 only.
5-51 Term. 29 High Frequency
Value:
0 - 110000 Hz
Function:
Enter the high frequency limit corresponding to
the high motor shaft speed (i.e. high reference
value) in par. 5-53.
This parameter is available for FC 302 only.
5-52 Term. 29 Low Ref./Feedb. Value
Value:
-1000000.000 - par. 5-53
Function:
Enter the low reference value limit for the motor
shaft speed [RPM]. This is also the lowest feed-
back value, see also par. 5-57. Set terminal 29 to
digital output (par. 5-02 =Output [1] and par.
5-13 = applicable value).
This parameter is available for FC 302 only.
factory setting
174
How to Programme
100Hz
100Hz
0.000
() display text [] value for use in communication via serial communication port
MG.33.B7.02 - VLT is a registered Danfoss trademark
5-53 Term. 29 High Ref./Feedb. Value
Value:
Par. 5-52 - 1000000.000
Function:
Enter the high reference value [RPM] for the mo-
tor shaft speed and the high feedback value, see
also par.5-58. Select terminal 29 as a digital out-
put (par. 5-02 =Output [1] and par. 5-13 = ap-
plicable value).
This parameter is available for FC 302 only.
5-54 Pulse Filter Time Constant #29
Value:
1 - 1000 ms
Function:
Enter the pulse filter time constant. The pulse fil-
ter 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 de-
lay through the filter. This parameter is available
for FC 302 only.
This parameter cannot be adjusted while the mo-
tor is running.
5-55 Term. 33 Low Frequency
Value:
0 - 110000 Hz
Function:
Enter the low frequency corresponding to the low
motor shaft speed (i.e. low reference value) in
par. 5-57. Refer to the diagram in this section.
5-56 Term. 33 High Frequency
Value:
0 - 110000 Hz
Function:
Enter the high frequency corresponding to the
high motor shaft speed (i.e. high reference value)
in par. 5-58.
1500.000
100ms
100Hz
100Hz