Hitachi SJ Series User Manual page 342

Chapter 12
12.15 Changing the Stop Mode
12.15.1 Selecting the stop mode
Q
• How to shut down the output without decelerating
the motor because a moment of inertia is so large
that it causes overvoltage
• How to shut down the inverter output immediately
because the mechanical brake is used to stop the
motor
A
• Use [AA115] Stop mode selection to select one of
the two methods of stopping the motor when the
operation command is turned off. One is to stop the
motor according to the deceleration time; the other
is to immediately cut off the output to shut down.
• If a free-run stop is to be input from a terminal,
assign 032 [FRS] to an input terminal, and turn on
the terminal.
Parameter
Item
Stop mode selection
Restart after free-run
stop
Input terminal selection
When free-run stop is selected: [AA115]=01
Operation
command [FW]
ON
Motor speed
0
Behavior according to the restart after
free-run stop
(Ex.) [bb-40]=01
Parameter
[AA115]
[bb-40]
[CA-01]~[CA-11]
ON
Free-running
12-15-1
!
• If [AA115]=01 free-run stop is selected, the output
will be shut off when the operation command is
turned off.
• If the free-run stop is selected, the restart when an
operation command is given the next time will
follow the selection at [bb-40] Restart after free-run
stop.
Data
00 Normal stop (deceleration → stop)
01 Free-run stop
00 Restart with 0 Hz
01 Frequency matching restart
02 Frequency pull-in restart
032 Uses the Free-run stop function [FRS].
When the [FRS] terminal is used
Operation
command [FW]
Free-run stop
[FRS]
Motor speed
0
Behavior according to the restart after
free-run stop
(Ex.) [bb-40]=01
Inverter Function
Description
ON
ON
Free-running