YASKAWA
SIEPYAIH6B01A HV600 AC Drive Bypass Technical Reference
199
b3-02: SpeedSearch Deactivation Current
b3-03: Speed Search Deceleration Time
b3-05: Speed Search Delay Time
L2-03: Minimum Baseblock Time
L2-04: Powerloss V/f Recovery Ramp Time
Figure 5.16 Current Detection 2 after a Momentary Power Loss
Note:
After you restore power, the drive will not do Speed Search until the time set in
b3-05 [Speed Search Delay Time]
expires. This means that
the drive will not always start Speed Search when time set in
L2-03 [Minimum Baseblock Time]
expires.
If you enter the Run command at the same time as Speed Search, the drive will not do Speed Search until the time set
in
L2-03
expires. When
L2-03
<
b3-05
, the drive will use the wait time set in
b3-05
.
b3-02: SpeedSearch Deactivation Current
b3-03: Speed Search Deceleration Time
L2-03: Minimum Baseblock Time
L2-04: Powerloss V/f Recovery Ramp Time
Figure 5.17 Speed Search Selection at Start (Current Detection Type)
WARNING!
Sudden Movement Hazard. Do not do Current Detection Speed Search with light loads or a stopped motor. If you do
Auto-Tuning in these conditions, the motor can suddenly accelerate and cause serious injury or death.
Note:
•
If the drive detects
oL1 [Motor Overload]
during Current Detection Speed Search, decrease
b3-03
.
•
If the drive detects
oC [Overcurrent]
or
ov [Overvoltage]
during Current Detection Speed Search after the drive recovers from a
momentary power loss, increase
L2-03
.
■
Speed Estimation
Use this Speed Search function with induction motors. Set
b3-24 = 1 [Speed Search Method Selection = Speed
Estimation]
. This function uses less current and has a shorter search time than other functions. This function lets you
do Speed Search when the motor is rotating in reverse. When you return power after a power loss, the motor will not
suddenly accelerate.
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Страница 454: ...5 14 Z Bypass Parameters 454 YASKAWA SIEPYAIH6B01A HV600 AC Drive Bypass Technical Reference...
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Страница 768: ...10 6 MEMOBUS Modbus Communications 768 YASKAWA SIEPYAIH6B01A HV600 AC Drive Bypass Technical Reference...
Страница 780: ...11 3 European Standards 780 YASKAWA SIEPYAIH6B01A HV600 AC Drive Bypass Technical Reference...