Yaskawa Matrix Converter - Manual (Page 111)

Parameter Tables
5-
11
„ b3: Speed Search
b2-08
Magnetic Flux
Compensation
Capacity
Sets the magnetic flux compensation as a
percentage of the no-load current value
(E2-03).
0 to
1000
0% No No A No 190H -
Field Comp
Parameter
Number
Name
Description
Setting
Range
Default
Change
during
Run
Control
Methods MEMO-
BUS
Register
Page
Display V/f
Open
Loop
Vector
Flux
Vector
b3-01
Speed Search
Selection Enables/disables the speed search func-
tion for the Run Command and sets the
speed 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 calcu-
lated speed to the specified frequency
(motor direction is also searched).
Current Detection:
The speed search is started from the fre-
quency when power was momentarily
lost and the maximum frequency, and the
speed is detected at the search current
level.
0 to 3 *1 0 No A A No 191H 6-59
SpdSrch at Start
b3-02
Speed Search
Deactivation Cur-
rent Used only when b3-01 = 2 or 3. Sets
speed search operating current in units of
percent, with MxC rated current as 100%.
Note: Normally not necessary to change.
If the MxC won’t run after a restart,
lower this value.
0 to
200 100%
*2
No A A No 192H 6-59
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 A No 193H 6-59
SpdSrch Dec
Time
b3-04
*4
Current Suppres-
sion Gain During
Search Sets the gain used to suppress output cur-
rent during a current detection speed
search.
If resistor overheat (SOH) occurs, reduce
the setting.
10 to
100
100%
*3
No A A No 194H 6-59
SpdSrch I Gain
b3-05
Speed Search
Delay Time Delays the speed search operation after a
momentary power loss to allow time for
an external output contactor to re-ener-
gize.
0.0 to
20.0
0.2 s No A A A 195H 6-59
Search Delay
b3-10
Speed Search
Detection Com-
pensation Gain
Sets the gain for the frequency at which
the MxC starts speed estimation speed
search. Use only when b3-01 = 0 or 1.
1.00 to
1.20
1.05 No A A No 19AH 6-59
Srch Detect Comp
Parameter
Number
Name
Description
Setting
Range
Default
Change
during
Run
Control
Methods MEMO-
BUS
Register
Page
Display V/f
Open
Loop
Vector
Flux
Vector