Danfoss VLT Automation VT Drive FC 322 Programming Manual page 260

2 Parameter Description
26-34 Term. X42/5 Low Ref./Feedb. Value
Range:
0.000* [-999999.999 - 999999.999 ]
2
26-35 Term. X42/5 High Ref./Feedb. Value
Range:
100.000* [-999999.999 - 999999.999 ]
26-36 Term. X42/5 Filter Time Constant
Range:
0.001 s* [0.001 - 10.000 s]
26-37 Term. X42/5 Live Zero
Option:
[0] Disabled
[1] * Enabled
258
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Function:
Enter the analog input scaling value that corresponds to the low voltage value set in
Terminal X42/5 Low Voltage
par. 26-30 .
Function:
Enter the analog input scaling value that corresponds to the high voltage value set in
par. 26-21 Terminal X42/3 High Voltage
Function:
Enter the time constant. This is a first-order digital low pass filter time constant for suppressing
noise in terminal X42/5. A high time constant value improves dampening but also increases the time
delay through the filter. This parameter cannot be adjusted while the motor is running.
Function:
This parameter makes it possible to enable the Live Zero monitoring. E.g. where the analog input
is a part of the frequency converter control, rather than being used as part of a decentral I/O system,
such as a Building Management System.
MG.20.W1.22 - VLT is a registered Danfoss trademark
VLT Automation VT Drive FC322
.
Programming Guide