Omron MX2 - Free-Run Stop

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Using Intelligent Input Terminals Section 4-5
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.
Parameter
B003 specifies a delay time before resuming operation from a free-
run stop. To disable this feature, use a zero delay time.
Option
Code
Terminal
Symbol
Function
Name
State Description
11 FRS Free-run
Stop
ON Causes output to turn OFF,
allowing motor to free run (coast)
to stop
OFF Output operates normally, so
controlled deceleration and stops
motor
Valid for inputs: C001~C007
Required settings: B003, B088, C011 to C017
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.
[FRS]
1
0
Motor speed
t
[FW,RV]
1
0
Zero frequency start
[FRS]
1
0
Motor speed
t
[FW,RV]
1
0
Resume from motor speed
Wait time
B088 = 00
B088 = 01
B003