Yaskawa Z1000U - Manual (Page 258)

No.
(Addr
Hex.)
Name LCD Display Description Values Page
b3-12
(019C)
Minimum Current
Detection Level during
Speed Search
Srch I Deadband
Sets the minimum current detection level during Speed Search.
Increase this setting value in increments of 0.1 if the drive fails
to perform Speed Estimation.
Default: <1>
Min.: 2.0
Max.: 10.0
–
b3-14
(019E)
Bi-Directional Speed
Search Selection
Bidir Search Sel
0: Disabled
1: Enabled
0: Disabled (uses the direction of the frequency reference)
1: Enabled (drive detects which way the motor is rotating)
Default: 1
Range: 0, 1
147
b3-17
(01F0)
Speed Search Restart
Current Level
SrchRestart Lvl
Sets the Speed Search restart current level as a percentage of the
drive rated current.
Default: 150%
Min.: 0
Max.: 200
148
b3-18
(01F1)
Speed Search Restart
Detection Time
SrchRestart Time
Sets the time to detect Speed Search restart. Default: 0.10 s
Min.: 0.00
Max.: 1.00
148
b3-19
(01F2)
Number of Speed
Search Restarts
Num of SrchRestr
Sets the number of times the drive can attempt to restart when
performing Speed Search.
Default: 3
Min.: 0
Max.: 10
148
b3-24
(01C0)
Speed Search Method
Selection
SpdSrch Method
1: CurrentDetection
2: Speed Estimation
1: Current Detection
2: Speed Estimation
Default: 2
Range: 1, 2
–
b3-25
(01C8) Speed Search Wait Time SpdSrch WaitTime
Sets the time the drive must wait between each Speed Search
restart attempt.
Default: 0.5 s
Min.: 0.0
Max.: 300.0
148
b3-27
(01C9)
Start Speed Search
Select
SPD Search By AI
0: start from 0
1: start SPD
Selects a condition to activate Speed Search Selection at Start
(b3-01) or External Speed Search Command 1 or 2 from the
multi-function input.
0: Triggered when a Run command is issued (normal).
1: Triggered when an external baseblock is released.
Default: 0
Range: 0, 1
–
b3-29
(077C)
Speed Search Induced
Voltage Level
SpdSrch Ind Vlvl
OLV/PM OLV/PM
Performs Speed Search when the motor induced voltage
exceeds the set level.
There is normally no need to change this parameter from the
default value, but if changes are necessary, try lowering this
value in small increments. When set too low, the drive will not
perform Speed Search.
Default: 10%
Min.: 0
Max.: 10
–
b3-31
(0BC0)
Speed Search Operation
Current Level 1 (Current
Detection 1)
Search (I2) Lvl1
Set the current level to use to limit the output current during a
Speed Search.
Default: 1.50
Min.: 1.50
Max.: 3.50
–
b3-32
(0BC1)
Speed Search Operation
Current Level 2 (Current
Detection 2)
Search (I2) Lvl2
Set the current level at which to end the Speed Search for
Current Detection Type Speed Search 2.
Default: 1.20
Min.: 0.00
Max.: 1.49
–
b3-33
(0B3F)
Speed Search Selection
when Run Command is
Given during Uv
SpdSrch Start UV
0: Disabled
1: Enabled
Activates and deactivates Speed Search at start in accordance
with whether a Run command was issued during an
undervoltage (Uv) condition. Function is active when a
momentary power loss (L2-01 = 1 or 2), Speed Search at start
(b3-01 = 1), and coasting to a stop (b1-03 = 1) are enabled.
0: Disabled
1: Enabled
Default: 0
Range: 0, 1
–
b3-50
(0BC7)
Backspin Search
Direction Judgment
Time 1
Bkspin Srch Time1
Adjusts the direction of Speed Search to allow for backspin.
Default: 0.0 s
Min.: 0.0
Max.: 10.0
–
b3-51
(0BC8)
Backspin Search
Direction Judgment
Time 2
Bkspin Srch Time2
Default: 0.0 s
Min.: 0.0
Max.: 10.0
–
b3-52
(0BC9)
Backspin Search
Deceleration Time 1
BkspinSrchDecel1
Sets the search frequency deceleration rate when searching from
the direction command when the momentary power loss time is
shorter than the time set in b3-50.
Default: 2.0 s
Min.: 0.0
Max.: 10.0
–
b3-53
(0BCA)
Backspin Search
Deceleration Time 2
BkspinSrchDecel2
Sets the search frequency deceleration rate for a Speed Search
from the opposite direction of the direction command when the
momentary power loss time is equal to or longer than the time
set in b3-51.
Default: 2.0 s
Min.: 0.0
Max.: 10.0
–
<1> Default setting is dependent on parameter o2-04, Drive Model Selection.
<2> Default setting is determined by parameter A1-02, Control Method Selection.
B.3 b: Application
258 YASKAWA ELECTRIC TOEP C710636 10B Z1000U HVAC MATRIX Drive User Manual