Omron SYSDRIVE RX Series User Manual page 178

4-2 Function Mode
Free-run Stop Selection
•Activating the free-run stop (FRS) function shuts off the Inverter output, letting the motor go into
free-run status.
Parameter No.
b088
b003
Frequency matching lower
b007
4
b028
b029
b030
•Helps stop the motor using a mechanical brake such as an electromagnetic one.
Note that an overcurrent trip may occur if the mechanical brake forces the motor to stop during
Inverter output.
•Allocate 11 (FRS) to any of multi-function inputs 1 to 8 (C001 to C008).
•Performs a free-run stop (FRS) while the FRS terminal is turned on.
When the FRS terminal is turned off, the motor restarts after the retry wait time (b003) elapses.
However, if RUN command selection A002 is set to "02" (Digital Operator), the Inverter does not
restart.
To restart the Inverter, input the RUN command.
•You can select as the Inverter output mode for restart a 0-Hz start, frequency matching start or
frequency pull-in restart at free-run stop selection b088. (Examples 1, 2, 3)
•If you set frequency matching lower limit frequency setting b007, the Inverter restarts at 0 Hz, when
the Inverter detects a frequency equal to or lower than this setting during frequency matching start.
•The setting of this function is applied to the FRS terminal, and also to the status when the Inverter
is reset from free running.
4-69
Function name
00: 0-Hz start (example 1)
Free-run stop selection 01: Frequency matching start (example 2)
02: Frequency pull-in restart (example 3)
Retry wait time 0.3 to 100: Time before restart
0.00 to 400.0:
limit frequency setting Set a frequency matching level.
Frequency pull-in restart 0.20 × Rated current to 2.00 × Rated
level current
Frequency pull-in restart
0.10 to 30.00
parameter
00: Frequency at interruption
Starting frequency at
01: Max. frequency
frequency pull-in restart
02: Set frequency
Data Default setting
Rated current
Unit
⎯
00
1.0 s
0.00 Hz
A
0.50 s
⎯
00