YASKAWA FSDrive-MV1S Instructions Manual page 75

Speed Search: b3
User constants for the speed search are shown in the following table.
Constant
Number
b3-01
b3-02
b3-03
b3-05
-10
5
Name
Description
Display
Speed search Enables/disables the speed
election (current search function for the Run
detection or speed Command and sets the speed
calculation) search method.
0: Disabled, speed calculation
1: Enabled, speed calculation
2: Disabled, current detection
3: Enabled, current detection
Speed Calculation:
When the search is started, the
motor speed is calculated and
acceleration/deceleration is
performed from the calculated
speed to the specified
SpdSrch at Start
frequency (motor direction is
also searched).
Current Detection:
The speed search is started
from the frequency when
power was momentarily lost
and the maximum frequency,
and the speed is detected at the
search current level.
Speed search Sets the speed search operation
operating current current as a percentage, taking
(current detection) the Inverter rated current as
100%.
Not usually necessary to set.
When restarting is not possible
SpdSrch Current
with the factory settings, reduce
the value.
Speed search Sets the output frequency
deceleration time deceleration time during speed
(current detection) search in 1-second units.
Set the time for deceleration
from the maximum output fre-
SpdSrch Dec Time
quency to the minimum output
frequency.
Speed search wait time Sets the magnetic contactor
(current detection or operating delay time when
speed calculation) there is a magnetic contactor on
the output side of the Inverter.
When a speed search is per-
formed after recovering from a
Search Delay
momentary power loss, the
search operation is delayed by
the time set here.
Change
Setting Factory
during
Open-
Range Setting
Operation
loop
Vector
*
0 to 3 No
0
0 to
*
No
30%
200
0.1 to
2.0 s No
10.0
0.0 to
0.2 s No
20.0
Control
Methods
MEMOBUS
Register
Flux
Vector
A A 1C0H
A No 1C1H
A No 1C2H
A A 1C4H