Trip Retry Function - Omron 3G3JX User Manual

Parameter No. Function name
Momentary power
interruption/
b004
undervoltage trip during
stop selection
Momentary power
b005 interruption retry time
selection
Starting frequency at
b011
frequency pull-in restart
Deceleration rate
b029 constant at frequency
pull-in restart
Frequency pull-in
b030
restart level
Related functions

Trip Retry Function

•Select the retry function during operation in [b001] (01 or 02). If [b005] is 00 (default), the following
operations are to be performed.
At the time of momentary power interruption and undervoltage:
Restarts 16 times and trips on the 17th time.
At the time of overcurrent and overvoltage:
Restarts 3 times respectively and trips on the 4th time.
Retry times are counted separately for momentary power interruption, undervoltage, overcurrent,
and overvoltage. For example, an overvoltage trip occurs only after 3-time overcurrent trips and
then 4-time overvoltage trips. For momentary power interruption and undervoltage, if [b005] is set
to 01, the retry operation continues until the status is cleared.
•You can select the operation for momentary power interruption and undervoltage during stop in
b004.
(Supplemental Information)
Frequency matching start: Restarts the motor without stopping it after matching the motor rotation
speed. (If the RUN command is set on the Digital Operator (A002 = 2), the Inverter stops.)
•Below is the timing chart where the retry function (b001: 02) is selected.
(Example 1) Duration of momentary power interruption
< Allowable duration of momentary power
interruption (b002)
Power supply
Inverter output
Motor rotation speed
ON
Alarm
OFF
[t0: Duration of momentary power interruption / t1: Allowable duration of momentary power interruption (b002) / t2: Retry wait time (b003)]
00: Disabled
01: Enabled
00: 16 times
01: No limit
00: Frequency at interruption
01: Max. frequency
02: Set frequency
0.1 to 3000.0
0.2 × Rated current to 2.0 × Rated current
Free running
t0
t2
t1
Data
C021, C026
(Example 2) Duration of momentary power interruption
> Allowable duration of momentary power
interruption (b002)
Power supply
Inverter output
Motor rotation speed
t0
t1
ON
Alarm
OFF
4-2 Function Mode
Default setting Unit
⎯
00
⎯
00
⎯
00
0.5 s
Rated current A
Free running
4-28
4