Free-Run Stop - Omron MX2 User Manual

Using Intelligent Input Terminals
4-5-3

Free-run Stop

When the terminal [FRS] is turned ON, the inverter stops the output and the
motor enters the free-run state (coasting). If terminal [FRS] is turned OFF, the
output resumes sending power to the motor if the Run command is still active.
The free-run stop feature works with other parameters to provide flexibility in
stopping and starting motor rotation.
In the figure below, parameter B088 selects whether the inverter resumes
operation from 0 Hz (left graph) or the current motor rotation speed (right
graph) when the [FRS] terminal turns OFF. The application determines the
best setting.
B003
Parameter specifies a delay time before resuming operation from a free-
run stop. To disable this feature, use a zero delay time.
B088 =
Zero frequency start
Motor speed
1
[FRS]
0
1
[FW,RV]
0
Option Terminal
Code Symbol
11
FRS Free-run
Stop
C001~C007
Valid for inputs:
B003, B088, C011 to C017
Required settings:
Notes:
• When you want the [FRS] terminal to be active low (normally closed logic), change
the setting (C011 to C017) that corresponds to the input (C001 to C007) that is
assigned the [FRS] function.
00
Resume from motor speed
Motor speed
1
[FRS]
0
1
[FW,RV]
0
t
Function State
Name
ON Causes output to turn OFF,
allowing motor to free run (coast)
to stop
OFF Output operates normally, so
controlled deceleration and stops
motor
Section 4-5
B088 = 01
Wait time
B003
t
Description
181