Hitachi WJ200-001S Instruction Manual page 230

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
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

To disable this feature, use a zero delay time.
Motor speed
1
[FRS]
0
1
[FW,RV]
0
Option Terminal
Code Symbol

FRS Free-run Stop
~
Valid for inputs:
, ,
Required settings
Notes:
 When you want the [FRS] terminal to be active
low (normally closed logic), change the setting
to ) that corresponds to the input
(
to ) that is assigned the [FRS]
(
function.

specifies a delay time before resuming operation from a free-run stop.
 
=
Zero frequency start
Function Name State
ON
OFF
to
 
selects whether the inverter resumes operation
Resume from motor speed
Motor speed
1
[FRS]
0
1
[FW,RV]
0
t
Description
Causes output to turn OFF, allowing motor to free
run (coast) to stop
Output operates normally, so controlled deceleration
and stops motor
Example (requires input configuration—
see page 3-85):
7 6 5 4
See I/O specs on page 4–6.
 
=
 Wait time
t
FRS
3 2 1 L P24
PLC
423