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5.5.2 Speed search
5.5.2.1 Controlling the speed search operation: S1.01
Parameter
Name
Unit
No.
Speed
S1.01
Search at
-
Start
• S1.01 finds the speed of a rotating motor and runs up smoothly from
the searched speed.
• This function is useful when the smooth operation is required in case
of momentary power loss.
• Setting
Setting
constant
Disables speed search operation:
0
Motor starts from minimum output frequency.
Enables speed search operation:
1
Speed search is performed from command frequency.
Speed search is done every time the run command is input.
5.5.2.2 Speed search level, current, and deceleration time
Parameter
Name
Unit
No.
Speed Search
S1.02
0.01Hz
Start Frequency
Speed Search
S1.03
1%
Current
Speed Search
S1.04
Deceleration
0.1sec
Time
• S1.02 is used to set the frequency where the speed search is started
• S1.03 sets the operating current for the speed search.
Lower the setting if restarting is not possible.
Setting unit is the percentage of inverter's rated output current.
5. Parameters
5-23
Setting
Factory
Changeable
range
Setting
during operation
0~1
0
X
Function
Changeable
Setting
Factory
during
range
Setting
operation
0.00
0.00
X
~600.00
0~200
100
X
0~10.0
2.0
X
MOSCON-E7 User's Manual
5-24
• S1.04 sets the output frequency deceleration time during the speed
search operation.
Run command
OFF
ON
S1.02
Output frequency
Output current
Figure 5.9 Speed search timing chart
Deceleration time set in S1.04
Frequency command
that is set
S1.03
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