YASKAWA HV600 Technical Reference page 204

5.2 b: Application
The drive uses the frequency reference to detect the direction of motor rotation.
1 : Enabled
The drive detects the direction of motor rotation during Speed Search.
■
b3-17: Speed Est Retry Current Level
No.
Name
(Hex.)
b3-17 Speed Est Retry Current
Level
(01F0)
Expert
When a large quantity of current flows during Speed Estimation Speed Search, the drive temporarily stops operation
to prevent overvoltage and overcurrent. When the current is at the level set in b3-17, the drive tries speed search
again.
■
b3-18: Speed Est Retry Detection Time
No.
Name
(Hex.)
b3-18 Speed Est Retry Detection
Time
(01F1)
Expert
When the current is more than the level set in b3-17 [Speed Est Retry Current Level] during the time set in b3-18, the
drive tries speed search again.
■
b3-19: Speed Search Restart Attempts
No.
Name
(Hex.)
b3-19 Speed Search Restart
Attempts
(01F2)
If the drive does the number of Speed Search restarts set in this parameter, it will trigger an SEr [Speed Search Retries
Exceeded] error.
■
b3-24: Speed Search Method Selection
No.
Name
(Hex.)
b3-24 Speed Search Method
Selection
(01C0)
Note:
Set b3-24 = 1. If b3-24 = 2, the drive will detect oPE08 [Parameter Selection Error].
Set b3-01 = 1 [Speed Search at Start Selection = Enabled] to do Speed Search at start. Set L2-01 = 1 [Power Loss
Ride Through Select = Enabled for L2-02 Time] to do Speed Search after you restore power after a momentary power
loss.
1 : Speed Estimation
The drive uses the residual voltage from a short baseblock time to estimate the motor speed.
If there is not sufficient residual voltage, then the drive will inject DC current into the motor to estimate the motor
speed.
2 : Current Detection 2
The drive will inject DC current into the motor to estimate motor speed.
204
Sets the current level for the search retry function in Speed Estimation Speed Search as a percentage
where drive rated current is a setting value of 100%.
Sets the length of time that the drive will wait to retry Speed Estimation Speed Search when too
much current flow stopped the Speed Search.
Sets the number of times to restart Speed Search if Speed Search does not complete.
Sets the Speed Search method when you start the motor or when you return power after a momentary
power loss.
Description
Description
Description
Description
YASKAWA SIEPYAIH6B01A HV600 AC Drive Bypass Technical Reference
Default
(Range)
110%
(0 - 200%)
Default
(Range)
0.10 s
(0.00 - 1.00 s)
Default
(Range)
3 times
(0 - 10 times)
Default
(Range)
2
(1, 2)