Hitachi SJ Series, User Manual

Page: 337 / 786

12-14-10
Chapter 12 Inverter Function
12.14.6 Starting after reset
• How to start operation matched with frequency
because the motor is idling at trip reset
• How to start operation with 0 Hz because the brake
is applied after a trip
• Set the start mode after a trip reset or a reset input
via the [RS] terminal (input terminal function 028).
(Ex. 1) Restart operation with 0 Hz: [bb-41]=00
(Ex. 3) Restart with 0 Hz: [bb-41]=00
Parameter
* 1) See "12.14.3 Starting by picking up frequency".
• The restart after reset, which occurs when the
inverter recovers from a reset, is the same as the
mode at power-on.
• If the frequency pull-in restart is used, the rotational
direction of the output frequency is the same as the
command direction at shut-off.
• If a power failure lasts long and the inverter's
internal power supply is lost, recovery will take
place by the restart after reset instead of the restart
after instantaneous power failure/under-voltage.
• In case of the 0 Hz restart, there is no wait time.
(Ex. 2) Frequency pull-in [bb-41]=01 to 03
(Ex. 4) Frequency pull-in [bb-41]=01 to 03
*2) See "12.14.4 Starting with frequency pull-in".
Item Parameter Data Description
Restart after reset [bb-41]
00 Performs the 0 Hz restart.
01 Performs frequency matching restart.* 1)
02 Performs frequency pull-in restart.* 2)
Retry wait time after
instantaneous power
failure/under-voltage
[bb-26] 0.3~100.0(s)
Sets the wait time after the operation
command.
Q
A
!
Restart with 0 Hz
Operation
command
Motor speed
[RS] Reset
Free-running
Follows [bb-41]
[bb-26]
[RS] Reset
Motor speed
Operation
command
Restart with 0 Hz
Operation
command
Motor speed
[RS] Reset
Free-running
Follows [bb-41]
[bb-26]
[RS] Reset
Motor speed
Operation
command