YASKAWA Varispeed E7 Instruction Manual And Parameter Description page 180

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 6.30 Speed Search at Startup (Current Detection)
Speed Search after Short Baseblock (during Power Loss Recovery, etc.)
Loss time shorter than minimum baseblock time
•
AC power supply
Output frequency
Output current
Minimum baseblock time (L2-03)*1
Fig 6.31 Speed Search After Baseblock (Current Detection: Loss Time < L2-03)
Loss time longer than minimum baseblock time
•
AC power supply
ON
Output frequency
Output current
Minimum baseblock time*
(L2-03)
Fig 6.32 Speed Search After Baseblock (Current Detection: Loss Time > L2-03)
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
ON
Deceleration time set in b3-03
* Lower limit is set using Speed Search Time (b3-05).
OFF
ON
Output frequency before power loss
*1 Baseblock time may be reduced by the output
frequency immediately before baseblock.
*2 After AC power supply recovery, motor waits for
the minimum Speed Search Wait Time (b2-03).
*2
Output frequency before power loss
OFF
Set frequency
reference
Set frequency
Deceleration time
reference
set in b3-03
b3-02
speed search operating current
Set frequency
Deceleration speed set in b3-03
reference
b3-02
Speed search operating time
Speed search wait time (b3-05)
Automatically Restart
b3-02
43
6-