n
b3-19: Number of Speed Search Restarts (Speed Estimation Type)
Sets the number of times the drive should attempt to find the speed and restart the motor. If the number of restart attempts
exceeds the value set to b3-19, the SEr fault will occur and the drive will stop.
No.
Name
Setting Range
Default
b3-19
Number of Speed Search Restarts
0 to 10
3
n
b3-24: Speed Search Method Selection
Sets the Speed Search method.
In V/f, V/f w/PG, or OLV control modes, set this parameter to 2 (Current Detection Type Speed Search 2) when b3-50 is 0.1
or longer.
No.
Parameter Name
Setting Range
Default
b3-24
Speed Search Method Selection
Determined by
A1-02 and o2-04
<1> Setting range is determined by o2-04, Drive Model Selection.
Setting 1: Speed Estimation
Setting 2: Current Detection 2
Setting 3: Speed Estimation 2
Setting 4: Current Detection 3
Note:
1.
Enable or disable Speed Search at start with b3-01 and Speed Search after momentary power loss with L2-01.
2.
Refer to Current Detection Speed Search 2 (b3-24 = 2) on page 198
Refer to Current Detection Speed Search 3 (b3-24 = 4) on page
Refer to Speed Estimation Speed Search (b3-24 = 1) on page 198
Refer to Speed Estimation Speed Search 2 (b3-24 = 3)
for details on the Speed Search direction.
3.
Settings 3 and 4 are available in drive software versions PRG: 1017 and later.
n
b3-25: Speed Search Wait Time (Speed Estimation Type)
Sets the wait time between Speed Search restarts. Increase the wait time if problems occur with overcurrent or if an SEr fault
occurs.
No.
Name
Setting Range
Default
b3-25
Speed Search Wait Time
0.0 to 30.0 s
0.5 s
n
b3-27: Start Speed Search Select
Selects a condition to activate Speed Search Selection at Start (b3-01). Set this parameter to 1 when using a sequence in which
operation starts when the frequency reference exceeds the minimum output frequency while the Run command is active.
No.
Name
Setting Range
Default
b3-27
Start Speed Search Select
0, 1
0
Setting 0: Triggered when a Run Command Is Issued (Normal)
Setting 1: Triggered when an External Baseblock Is Released
n
b3-29: Speed Search Induced Voltage Level
Lower this value in small increments if changes are necessary. Setting this value too low will prevent the drive from performing
Speed Search. There is normally no need to change this parameter from the default value.
No.
Name
Setting Range
Default
b3-29
Speed Search Induced Voltage Level
0 to 10%
10%
n
b3-31: Speed Search Operation Current Level 1 (Current Detection Type 2)
Sets the current level used to limit the output current during Current Detection Type Speed Search 2 as a ratio to E2-03, Motor
No-Load Current.
5.2 b: Application
202
YASKAWA ELECTRIC SIEP C710636 04D U1000 Industrial MATRIX Drive Technical Manual
Summary of Contents for U1000 iQpump Drive
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