3
73
An additional parameter further configures
all instances of a free-run stop. Parameter
, Retry Wait Time Before Motor Restart,
sets the minimum time the inverter will
free-run. For example, if
= 4 seconds
(and
=
) and the cause of the free-run
stop lasts 10 seconds, the inverter will
free-run (coast) for a total of 14 seconds
before driving the motor again.
The figure at below right describes how
active frequency matching resume operates.
After waiting the time set in
, the
inverter tries to catch the speed of the motor
shaft and outputs the speed set in
. At
this time, if the motor current rises up to the
value set in
, the inverter decreases the
frequency according to the deceleration time
set in
, and finally comes to the required
speed. Following are the related parameters
for this control.
Code
Parameter contents
Current level of active frequency
matching
Deceleration rate of active frequency
matching
Start freq. of active freq. matching
Restart mode after FRS
Stop mode selection
“b” Function
Run
Mode
Edit
Defaults
Func.
Code
Name
Description
Initial data
Units
Restart mode after FRS
Selects how the inverter resumes
operation when free-run stop (FRS)
is cancelled, three options:
Restart from 0Hz
Restart from frequency detected
from real speed of motor (freq.
matching)
Restart from frequency detected
from real speed of motor (active
freq. matching)
00
Stop mode selection
Select how the inverter stops the
motor, two option codes:
DEC (decelerate to stop)
FRS (free-run to stop)
00
Motor
speed
Stop mode = free-run stop
=
0
t
[FRS]
0
t
Resume from 0Hz
=
Zero-frequency start
Zero frequency resume
Motor
speed
Stop mode = free-run stop
=
0
t
[FRS]
0
t
Resume from current speed
=
Wait time
0
t
Motor
current
RMS
Active frequency matching resume
Summary of Contents for WJ200-001L
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