Hitachi SJ300-037HFE 사용자 설명서
Using Intelligent Input Terminals
Oper
ations
a
nd Moni
tor
ing
4–20
Free-run Stop
When the terminal [FRS] is turned ON, the inverter turns OFF 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.
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.
(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.
disable this feature, use a zero delay time.
FRS
Switches
Motor
speed
[FW, RV]
Zero-frequency start
FRS
Switches
Motor
speed
Resume from current speed
wait time
[FW, RV]
B003
B088=01
B088=00
Resume from 0Hz
t
t
Opt.
Code
Symbol
Function Name
Input
State
Description
11
FRS
Free-run Stop
ON
Causes output to turn OFF, allowing
motor to free run (coast) to stop
motor to free run (coast) to stop
OFF
Output operates normally, so controlled
deceleration stops motor
deceleration stops motor
Valid for
inputs:
inputs:
C001, C002, C003, C004,
C005, C006, C007, C008
C005, C006, C007, C008
Required
settings:
settings:
B003, B088, C011 to C018
Notes:
• When you want the [FRS] terminal to be
• When you want the [FRS] terminal to be
active low (normally closed logic), change
the setting (C011 to C018) that corresponds
to the input (C001 to C008) that is assigned
the [FRS] function.
the setting (C011 to C018) that corresponds
to the input (C001 to C008) that is assigned
the [FRS] function.
5
3
1
7
6
4
2
8
FW
TH
PLC
CM1
P24
CM1
Example: (Default input configuration
shown—see page
shown—see page
. Jumper position
shown is for –xFU/-xFR models; for –xFE
models, see page
models, see page
.)
FRS