Speed search: b3 – Yaskawa G7 Drive User Manual
Page 126
User Parameter Tables
5-
15
Speed Search: b3
User parameters for the speed search are shown in the following table.
Parameter
Number
Name
Description
Setting
Range
Factory
Setting
Change
during
Operation
Control Methods
MODBUS
Register
Display
V/f
V/f
with
PG
Open
Loop
Vector
1
Flux
Vector
Open
Loop
Vector
2
b3-01
Speed
Search
Selection
Enables/disables and selects
the speed search function at
start.
0: Speed Estimation Speed
Search Disable - Speed
search at start is disabled
(however the estimated
speed method is used for
multi-function input, power
loss ridethrough, auto fault
retry)
1: Speed Estimation Speed
Search Enable - The speed
estimation method of speed
search is enabled at run
command.
2: Current Detection Speed
Search Disable - Speed
search at start is disabled
(however the current
detection method is used
for multi-function input,
power loss ride through,
auto fault retry)
3: Current Detection Speed
Search Enable - The current
detection method of speed
search is enabled at run
command.
Speed Estimation Method:
Motor speed and direction are
measured using residual
motor flux.
Current Detection Method:
Motor speed is measured
using current feedback levels
(unidirectional only).
0 to 3
2
*
No
A
A
A
No
A
191H
SpdSrch at
Start
b3-02
Speed
Search
Deactivation
Current
Used only when b3-01 = 2 or
3. Sets speed search operating
current in units of percent, with
drive rated current as 100%.
Note: Normally not necessary
to change. If the drive won't
run after a restart, lower this
value.
0
to
200
100%
**
No
A
No
A
No
A
192H
SpdSrch
Current
b3-03
Speed
Search
Deceleration
Time
Used only when b3-01 = 2 or
3. Sets the deceleration time
during speed search.
0.1
to
10.0
2.0 s
No
A
No
A
No
No
193H
SpdSrch
Dec Time