Hitachi SJ Series, User Manual

Page: 342 / 786

12-15-1
Chapter 12 Inverter Function
12.15 Changing the Stop Mode
12.15.1 Selecting the stop mode
• 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
• 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
When free-run stop is selected: [AA115]=01
• 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.
When the [FRS] terminal is used
Item Parameter Data Description
Stop mode selection
[AA115]
00 Normal stop (deceleration → stop)
01 Free-run stop
Restart after free-run
stop
[bb-40]
00 Restart with 0 Hz
01 Frequency matching restart
02 Frequency pull-in restart
Input terminal selection [CA-01]~[CA-11] 032 Uses the Free-run stop function [FRS].
Q
A
!
Free-running
Behavior according to the restart after
free-run stop
(Ex.) [bb-40]=01
0
Motor speed
Operation
command [FW]
ON ON
Free-running
Behavior according to the restart after
free-run stop
(Ex.) [bb-40]=01
0
Motor speed
Operation
command [FW]
Free-run stop
[FRS]
ON
ON