E6581172①
8
4.1.3. Operation with F330=3, 5, 8 or 10 (preset-speed mode)
When light-load high-speed operation selection F330=3, 5, 8 or 10 (preset-speed mode) is set, a light-load
detection internally turns ON the preset-speed command 4. Therefore, during light-load detection, operation shall
be performed with the preset-speed frequencies of 8~15. At this time, the input terminal S4 can independently be
used as a normal function-assigned terminal.
Because of the directed speed value being the input preset-speed command, high-speed operation will be stopped
if the input preset-speed operation frequency is set to less than light-load high-speed operation switching lower limit
frequency (F331).
F330=3 or 8 : Continuous preset-speed mode
F330=5 or 10 : Enabled-terminal effective preset-speed mode
F330=5 or 10 is the setting of 3 plus the enabling signal of light-load high-speed operation function.
The following example of F330=5 or 10 indicates the enabling signal assigned to S4 terminal:
Correspondence between preset-speed number and light-load high-speed operation is as
shown below:
Light-load detection (note 2)
S3 S2 S1
OFF ON
000
Selected frequency
(note 1)
Preset-speed 8
0 0 1 Preset-speed 1 Preset-speed 9
0 1 0 Preset-speed 2 Preset-speed 10
0 1 1 Preset-speed 3 Preset-speed 11
1 0 0 Preset-speed 4 Preset-speed 12
1 0 1 Preset-speed 5 Preset-speed 13
1 1 0 Preset-speed 6 Preset-speed 14
1 1 1 Preset-speed 7 Preset-speed 15
Note 1 : Frequency selected according to the speed command selection priority 1 (FMOD)
Note 2 : Light-load detection is effective when the selected frequency and preset-speed
frequencies of 1~7 are light-load high-speed operation switching lower frequency
(F331) or higher.
C C
Light-load
detection
Light-load high-speed
enabling signal
Preset-speed
command 4
S4
S3
S2
S1
F
C C
In case of selecting light-load high-speed operation enabling signal (120) for S4 (F118)
To Next Page
Loading...
Need help?
General