Inline duct fans [Fans, Pumps, Compressors] |
Application samples (2)
Remote contorl by 4-20mA analog signal
By receiving a 4-20mA analog signal from an external controller, the inverter controls airflow as best.
Connection diagram of the VF-nC3
Setting table for the VF-nC3
Title |
Function |
Setting range |
Recommended setting |
|
Command mode selection |
0: Remote, 1: Local |
0 |
|
Frequency setting mode selection |
0: Terminak board, 1: Setting dial 1, 2: Setting dial 2, etc. |
0 |
|
Analog input/logic input function selection |
0 to 2 |
1 |
|
VI reference point 1 setting |
0 to 100% |
20 % |
|
VI reference point 2 frequency |
0 to 400Hz |
60 Hz |
Process control(PID control) by a termperature sensor
The output freqency of the inverter is automatically controlled by a sensor signal.
It will be a constant temperature control.
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The inveter compares two signal and controls that the feedback signal is to be target temperature.
- Target temperature: Inverter's operating frequency
- Feedback signal: From a temperature sensor
ex.
Specifications of a temperature sensor:
4mA = 0 degreeC, 20mA = 50 degreeC
Target temperature:
20Hz operation frequency
= 20 Hz / 60 Hz x 50 degreeC = 16.7 degreeC
40Hz operation frequency
= 40 Hz / 60 Hz x 50 degreeC = 33.3 degreeC
60Hz operation frequency
= 60 Hz / 60 Hz x 50 degreeC = 50 degreeC
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Connection diagram of the VF-nC3
Setting table for the VF-nC3
Title |
Function |
Setting range |
Recommended setting |
|
Command mode selection |
0: Remote, 1: Local |
0 |
|
Upper limit frequenct |
0.5 ~ Maximum frequency[FH] |
60 |
|
Preset speed frequency 1 |
Low limit frequency[LL] ~ Upper limit frequency[UL] |
20 Hz |
|
Preset speed frequency 2 |
Low limit frequency[LL] ~ Upper limit frequency[UL] |
40 Hz |
|
Preset speed frequency 4 |
Low limit frequency[LL] ~ Upper limit frequency[UL] |
60 Hz |
|
Input terminal function (R) |
0 to 201 |
14 |
|
Analog input/logic input function selection |
0 to 2 |
1 |
|
VI reference point 1 setting |
0 to 100% |
20 % |
|
VI reference point 2 frequency |
0 to 400Hz |
60 Hz |
|
PID control |
0: Disabled, 1: Enabled |
1 |
|
Proportional (P) gain |
0.01-100.0 |
Depends on application |
|
Integral (I) gain |
0.01-100.0 |
Depends on application |
|
Differential gain |
0.00-2.55 |
Depends on application |
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