Hitachi SJ Series User Manual page 339

Chapter 12
A
• (Ex. 5) and (Ex. 6) below show cases where the
free-run stop is performed via the operation
command.
(Ex. 5) Restarting with 0 Hz: [bb-40]=00
Operation
command
Motor speed
Parameter
Item
Restart after free-run stop
Retry wait time after instantaneous
power failure/under-voltage
Stop method selection
* 1) See "12.14.3 Starting by picking up frequency".
Restarting with 0 Hz
Parameter
[bb-40]
[bb-26] 0.3~100.0(s)
[AA115]
12-14-12
• The free-run stop at stopping is used when an
overvoltage error occurs at stopping, for example.
However, the motor continues rotating through
inertia.
(Ex. 6) Frequency pull-in [bb-40]=01 to 02
Operation
command
Motor speed
Data
00 Performs the 0 Hz restart.
01 Performs frequency matching restart.* 1)
02 Performs frequency pull-in restart.* 2)
Sets the wait time after the operation
command.
Performs the free-run stop when the
01
operation command is off.
*2) See "12.14.4 Starting with frequency pull-in".
Inverter Function
Free-running
Follows [bb-41]
[bb-26]
Description