Omron VARISPEED E7 User Manual page 180

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 6.29 Speed Search after Baseblock (Calculated 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
Note: If the frequency immediately before the baseblock is low or the power supply break time is long,
operation may be the same as the search in case 1.
Fig 6.30 Speed Search after Baseblock (Calculated Speed: Loss Time > L2-03)
Current Detection
Speed Search at Startup
The time chart when speed search at startup or external speed search command is selected is shown below.
OFF
Run command
Maximum output
frequency or
set frequency
Output frequency
Output current
Minimum baseblock time*
(L2-03)
Fig 6.31 Speed Search at Startup (Current Detection)
OFF
ON
*1. After AC power supply recovery, motor waits for
ON OFF
Minimum baseblock time Speed Search Wait Time
(L2-03) (b3-05)
ON
Deceleration time set in b3-03
* Lower limit is set using Speed Search Time (b3-05).
Start using
speed detected
10 ms
the minimum Speed Search Wait Time (b3-05).
Start using speed detected
10 ms
Set frequency
reference
b3-02
Set frequency
reference
Set frequency
reference
6-
6
41