YASKAWA FSDrive-MV1S - Page 165

Continuing Operation
6-41
Speed Search after Short Baseblock (during Power Loss Recovery, etc.)
The time chart when the Inverter operation is restarted after power has been restored is shown below.
• Loss Time Shorter Than the Minimum Baseblock Time (L2-03)
Fig 6.16 Speed Search after Baseblock (When Estimated Speed: Loss Time Is Set in L2-03)
•
Loss Time Longer Than the Minimum Baseblock Time (L2-03)
Fig 6.17 Speed Search After Baseblock (Estimated Speed: Loss Time > L2-03)
Main circuit
power supply
Output frequency
Output current
Off
On
Start using
speed detected
Set frequency
reference
Minimum baseblock time (L2-03) x 0.75*1
10 ms
*1 Baseblock time may be reduced by the output frequency
immediately before the baseblock.
*2 After Main circuit power supply recovery, motor waits for th
e
minimum Speed Search Wait Time (b3-05).
*2
Main circuit
power supply
Output frequency
Output current
Off
On
Start using speed detected
Set frequency
reference
Minimum baseblock time
(L2-03)
10 ms
Speed Search Wait Time
(b3-05)