2.7.6 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
Terminal 29 Digital Input
) or terminal 33
(par. 5-15
Terminal 33 Digital Input
) to
Pulse input
[32]. If terminal 29 is used as an input, then set par. 5-02
Terminal 29 Mode
to
Input
[0].
5-50 Term. 29 Low Frequency
Range:
Function:
100 Hz*
[0 - 110000 Hz]
Enter the low frequency limit corresponding to the low motor shaft speed (i.e. low reference value)
in par. 5-52
Term. 29 Low Ref./Feedb. Value
. Refer to the diagram in this section.
5-51 Term. 29 High Frequency
Range:
Function:
100 Hz*
[0 - 110000 Hz]
Enter the high frequency limit corresponding to the high motor shaft speed (i.e. high reference
value) in par. 5-53
Term. 29 High Ref./Feedb. Value
.
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
Term. 33 Low Ref./Feedb. Value
.
5-53 Term. 29 High Ref./Feedb. Value
Range:
Function:
100.000*
[-999999.999 - 999999.999 ]
Enter the high reference value [RPM] for the motor shaft speed and the high feedback value, see
also par. 5-58
Term. 33 High Ref./Feedb. Value
.
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:
100 Hz*
[0 - 110000 Hz]
Enter the low frequency corresponding to the low motor shaft speed (i.e. low reference value) in
par. 5-57
Term. 33 Low Ref./Feedb. Value
.
5-56 Term. 33 High Frequency
Range:
Function:
100 Hz*
[0 - 110000 Hz]
Enter the high frequency corresponding to the high motor shaft speed (i.e. high reference value) in
par. 5-58
Term. 33 High Ref./Feedb. Value
.
VLT
p
Automation VT Drive FC322
Programming Guide
2 Parameter Description
MG.20.W1.22 - VLT
p
is a registered Danfoss trademark
93
2
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