Danfoss VLT Refrigeration Drive FC 103 Programming Manual page 77

Parameter Description
Ref.
(RPM)
High
ref.
value
P 5-53/
p 5-58
Low
ref.
value
P 5-52/
p 5-57
Low freq.
P 5-50/
P 5-55
Illustration 3.28 Pulse Input
5-50 Term. 29 Low Frequency
Range: Function:
100 [0 - 110000 Enter the low frequency limit
Hz Hz] corresponding to the low motor shaft
*
speed (that is low reference value) in
parameter 5-52 Term. 29 Low Ref./Feedb.
Value. Refer to Illustration 3.28 in this
section.
5-51 Term. 29 High Frequency
Range: Function:
100 Hz [0 - 110000 Enter the high frequency limit
*
Hz] corresponding to the high motor shaft
speed (that is high reference value) in
parameter 5-53 Term. 29 High Ref./Feedb.
Value.
5-52 Term. 29 Low Ref./Feedb. Value
Range: Function:
0 [-999999.999 - Enter the low reference value limit for the
*
999999.999] motor shaft speed [RPM]. This is also the
lowest feedback value, see also
parameter 5-57 Term. 33 Low Ref./Feedb.
Value.
5-53 Term. 29 High Ref./Feedb. Value
Range: Function:
100 [-999999.999 - Enter the high reference value [RPM]
*
999999.999] for the motor shaft speed and the high
feedback value, see also
parameter 5-58 Term. 33 High Ref./Feedb.
Value.
5-54 Pulse Filter Time Constant #29
Range: Function:
NOTICE
100 [1 -
ms 1000 ms]
*
This parameter cannot be adjusted
while the motor is running.
MG16H202
Programming Guide
5-54 Pulse Filter Time Constant #29
Range:
High freq. Input
5-55 Term. 33 Low Frequency
P 5-51/ (Hz)
P 5-56
Range:
100 Hz
5-56 Term. 33 High Frequency
Range:
100 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
*
5-59 Pulse Filter Time Constant #33
Range:
100
ms
*
Danfoss A/S © 05/2016 All rights reserved.
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 high
time constant value results in better
dampening, but also increases the time
delay through the filter.
Function:
[0 - 110000 Enter the low frequency corresponding
*
Hz] to the low motor shaft speed (that is
low reference value) in
parameter 5-57 Term. 33 Low Ref./Feedb.
Value.
Function:
[0 - 110000 Enter the high frequency corresponding
*
Hz] to the high motor shaft speed (that is
high reference value) in
parameter 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
parameter 5-52 Term. 29 Low Ref./Feedb.
Value.
Function:
[-999999.999 - Enter the high reference value [RPM]
999999.999] for the motor shaft speed. See also
parameter 5-53 Term. 29 High Ref./
Feedb. Value.
Function:
NOTICE
[1 - 1000
ms]
This parameter cannot be adjusted
while the motor is running.
Enter the pulse filter time constant. The
low-pass filter reduces the influence, and
dampens oscillations on the feedback
signal from the control.
This is an advantage if there is a great
amount of noise in the system.
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