Omron 3G3RX User Manual

4-71
4-2 Function Mode
4
Functions
•If the RUN command is input again during free running, the Inverter restarts according to free-run
stop selection b088. (Refer to "Free-run Stop Selection" (page 4-71).)
Free-run Stop Selection
•Activating the free-run stop (FRS) function shuts off the Inverter output, letting the motor go into
free-run status.
•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
Active Frequency Matching 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.
Parameter No. Function name Data Default setting Unit
b091 Stop selection
00: Decel-Stop (Deceleration 
Stop)
01: Free-RUN (Free-run stop)
00 
b088 Free-run stop selection
00: 0-Hz start
01: f-match (Frequency matching
start)
02: Actv. f-match (Active Frequen-
cy Matching restart)
00 
b003 Retry wait time 0.3 to 100.0 1.0 s
b007
Frequency matching lower
limit frequency setting
0.00 to 400.00 0.00 Hz
Related functions F003, F203, F303
Parameter No. Function name Data Default setting Unit
b088 Free-run stop selection
00: 0-Hz start
01: f-match (Frequency matching start)
02: Actv. f-match (Active Frequency Match-
ing restart)
00 
b003 Retry wait time 0.3 to 100.0: Time before restart 1.0 s
b007
Frequency matching lower
limit frequency setting
0.00 to 400.00:
Set a frequency matching level.
0.00 Hz
b028
Active Frequency
Matching restart level
0.20 × Rated current to 2.00 × Rated
current (0.4 to 55 kW)
0.20 × Rated current to 1.80 × Rated
current (75 to 132 kW)
Rated current A
b029
Active Frequency
Matching restart
parameter
0.10 to 30.00 0.50 s
b030
Starting frequency at
Active Frequency
Matching restart
00: Off FQ (Frequency at interruption)
01: Max.FQ (Max. frequency)
02: Set FQ (Set frequency)
00 

Omron 3G3RX Specifications

General

Brand	Omron
Model	3G3RX
Category	DC Drives
Language	English