6
-62
Estimated Speed Search
The time chart for estimated speed searches is shown below.
Search at Startup
The time chart for when speed search at startup and speed search to multi-function input terminals is shown
below.
Fig 6.43 Speed Search at Startup (Estimated Speed)
Speed Search after Short Baseblock (during Power Loss Recovery, etc.)
•
Loss Time Shorter Than the Momentary Power Loss Minimum Baseblock Time (L2-03)
Fig 6.44 Speed Search after Baseblock (When Estimated Speed: Loss Time Is Set in L2-03)
off
on
b
3-02
1.0 s
R
u
n Command
O
u
tp
u
t fre
qu
ency
O
u
tp
u
t c
u
rrent
Start
u
sing
speed detected
Set fre
qu
ency
reference
* Lo
w
er limit set
u
sing Speed Search Delay Time (
b
3-05).
Minim
u
m Base
b
lock Time (L2-03)
Note: If the stopping method is set to coast to stop, and the R
u
n Command t
u
rns on in a short time,
the operation may
b
e the same as the search in External Speed Search Command 2.
AC power supply
Output frequency
Output current
off
on
Start using
speed detected
Set frequency
reference
Minimum Baseblock Time (L2-03)
10 ms
* After AC power supply recovery, motor waits for the
minimum Speed Search Delay Time (b3-05).
*
