| Application |
| Inline duct fans |
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Inline duct fans [Fans, Pumps, Compressors]
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 Application samples
In case of 'Inline duct fan', it is usually installed following operation methods:
- RUN and STOP operations by remote controls.
- Preset speed operations.
 Preset speed operations
Preset speed (low, moddel, high) operations are necessary to connect like as the following table on the VF-nC1 series.
| F |
S1 |
S2 |
R |
Operating ferquency |
| o | - | - | - | Set by an internal potentiometer |
| o | o | - | - | 20 Hz (Preset speed 1) |
| o | - | o | - | 40 Hz (Preset speed 2) |
| o | - | - | o | 60 Hz (Preset speed 4) |
* 'o' means that the signal turns on.
* The function of 'R' termial is necessary to change 'Reverse operation' to 'Preset speed command 3'.
 Connection diagram of the VF-nC1
Setting table for the VF-nC1
The following table shows settings of 'remote control' and 'preset speed operation' for TOSVERT VF-nC1.
And we recommend to set function of 'auto-restart control' for 'power failure'.
| Title |
Function |
Setting range |
Recommended setting |
    |
Command mode selection |
0: Remote, 1: Local |
0 |
   |
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 57 |
8 |
  |
Auto-restart control selection |
0 to 3 |
1 |
Application samples (2)
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