Omron SYSDRIVE MX2 SERIES User Manual

5-103
5-8 Restart Functions
SYSDRIVE MX2 Series USER'S MANUAL (3G3MX2-Axxxx)
5
Functions
Free-run Stop Function (FRS)
Activating the free-run stop (FRS) function shuts off the Inverter output, letting the motor go
into free-run status.
This function is effective when you stop the motor using the mechanical brake such as an
electromagnetic. Note that an overcurrent trip may occur if the mechanical brake forces the
motor to stop during Inverter output.
Allocate "11: FRS" to any Multi-function Input Selections (C001 to C007). The moter performs
a free-run stop while the FRS terminal is turned ON.
When the FRS terminal is turned ON and then OFF, the Inverter will restart after an elapse of
the time set in Restart Standby Time (b003). However, the Inverter will not restart if RUN
Command Selection is set to "Digital Operator" (A002 = 02). To restart the Inverter, input the
RUN command.
As the Inverter output method at restart, 0 Hz restart, frequency matching restart or frequency
pull-in restart can be selected by Free-run Stop Selection (b088). (Examples 1, 2, 3)
When Frequency Matching Lower Limit Frequency Setting (b007) is set, the Inverter will restart
at 0 Hz if a frequency below the frequency set here is detected at the time of frequency
matching restart.
The setting of this function will be applied to the FRS terminal, and also when the Inverter is
reset from free-run status.
Parameter
No.
Function name Data Description
Default
setting
Unit
b088
Free-run Stop
Selection
00 0 Hz restart (example 1)
00 −
01
Frequency matching restart
(example 2)
02
Frequency pull-in restart
(example 3)
b003
Restart Standby
Time
0.3 to 100.0 Time until restart 1.0 s
b007
Frequency
Matching Lower
Limit Frequency
Setting
0.00 to 400.0
Setting of frequency matching
level
0.00 Hz
b028
Frequency Pull-in
Restart Level
0.20 × Rated
current to
2.00 × Rated
current
Current limit level at frequency
pull-in restart
INV
rated
current
A
b029
Frequency Pull-in
Restart
Parameter
0.1 to 3000. 0.50 s
b030
Starting
Frequency at
Frequency Pull-in
Restart Selection
00 Frequency at interruption
00 −01 Maximum frequency
02 Set frequency
C001 to C007
Multi-function
Input Selection
11
FRS: Free-run stop
−−

Omron SYSDRIVE MX2 SERIES Specifications

General

Brand	Omron
Model	SYSDRIVE MX2 SERIES
Category	Inverter
Language	English