-
-
101
(Example) When jump frequency 1 (
50 )
is 45Hz and the jump width (
53
) is 2.0Hz: Jumping range = 43 to
47Hz.
2.7.24 SPEED SEARCH FUNCTION
Item Name
Constant to be set
Factory Preset
Speed Search Function
32 , 33
See page
Speed Search Operation Level
54
150%
Minimum Basseblock Time
55
0.5s
V/f during Speed Search
56
100%
When the motor during coasting is started during changing operation of commercial power supply and
inverter, etc., the motor can be operated without tripping by using the speed search function.
The speed search command is input from multifunction contact input terminals 4 and 5 .For the
functions of terminals 4 and 5 , “9”or “10” is set to
32
or
33
.
When setting to “9”: Search from maximum frequency
When setting to “10”: Search from setting frequency
By closing the search command during baseblock and inputting the run command, speed search is
started after the inverter output is shut off for the minmim baseblock time
55
.
When the inverter output current is larger than the set value of the speed search operation level
54
, the
speed search operation starts. Frequency in which the inverter output current becomes smaller than the
speed search operation level
54
set value is judged to be speed synchronized point, and the motor starts
reacceleration/redeceleration up/down to the setting frequency in the set accel/decel time.
