H100LonWorksManual
29
Inverter Parameters Related to the ‘nciMaxSpeed’ VariableI
Code Number/
Common Area Address
Code Description
Default
Range
DRV-18
Base Frequency
60.00 Hz
30.00 – 400.00
DRV-20
Max Frequency
60.00 Hz
40.00 – 400.00
4.2.10 Minimum Motor Speed (Mandatory)
Definition
Network config input SNVT_lev_percent
nciMinSpeed
Description
The ‘nciMinSpeed’ variable is used to configure the minimum speed of a motor. The ‘nciMinSpeed’ value is expressed
as a percentage of the nominal frequency (nciNmlFreq) configuration value. For example, if the ‘nciNmlFreq’ is 60.0
Hz and the ‘nciMinSpeed’ is set to 10%, the resulting frequency is 6 HZ (60.0 x 0.1). The minimum frequency
configured by these variables can be viewed on the keypad (DRV-19 Start Freq).
Changes cannot be made to the ‘nciMinSpeed’ variable while the inverter is running. Stop the inverter before making
any changes to the ‘nciMinSpeed’ variable.
The default value for the ‘nciMinSpeed’ variable (expressed as percentage) is calculated based on the base frequency
and the start frequency (‘DRV-19 Start Freq’ divided by ‘DRV-18 Base Freq’). Because the default for the start
frequency (DRV-19 Start Freq) is 0.5 Hz, the ‘nciMinSpeed’ variable value becomes 0.8% (0.5/60=0.0083, rounded off
and expressed as a percentage).
The ‘nciMinSpeed’ variable values must comply with the following formula.
Typical Range
0.000– 40.000 % (0.001 % increments)
Default
0.000%
※
As shown in the descriptions above, the ‘nciMinFreq(nciMinSpeed)’ and the’nciMaxSpeed (%)’ values adjust the
maximum frequency set at DRV-20 Max Freq. Because the maximum frequency (Max Freq) must fall within the 40–
400 Hz range, the inverter will maintain the current maximum frequency if the ‘nciNmlFreq’ is changed to a value less
than 40 Hz. (For example, if the ‘nciNmlFreq’ is set to 30 Hz and the ‘nciMaxSpeed‘ is set to 100.00%, the maximum
frequency will not be changed to 30 Hz).
830
.
163
840
.
163
Speed
Maximum
Speed
Minimum
