Omron SYSDRIVE 3G3RV Series User Manual page 272

Speed Search after Short Baseblock (during Power Loss Recovery, etc.)
• Loss Time Shorter Than the Minimum Baseblock Time (L2-03)
AC power supply
Output frequency
Output current
Minimum baseblock time (L2-03) x 0.75*1
Fig 6.43 Speed Search after Baseblock (When Estimated Speed: Loss Time Is Set in L2-03)
• Loss Time Longer Than the Minimum Baseblock Time (L2-03)
AC power supply
Output frequency
Output current
nCurrent Detection Speed Search
The time charts for current detection speed search is shown below.
Speed Search at Startup
The time chart when speed search at startup or external speed search command is selected is shown below.
-56
6
ON
ON
Minimum baseblock time
(L2-03)
Fig 6.44 Speed Search After Baseblock (Estimated Speed: Loss Time > L2-03)
OFF
Start using
speed detected
10 ms
*1 Baseblock time may be reduced by the output frequency
*2
immediately before the baseblock.
*2 After AC power supply recovery, motor waits for the
minimum Speed Search Wait Time (b3-05).
OFF
Start using speed detected
10 ms
Speed Search Wait Time
(b3-05)
Set frequency
reference
Set frequency
reference