Trip Retry Function - Omron JX User Manual

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
t0
ON
Alarm
OFF
[t0: Duration of momentary power interruption / t1: Allowable duration of momentary power interruption (b002) / t2: Retry wait time (b003)]
Alarm Selection for Momentary Power Interruption/Undervoltage During Stop
•Use b004 to select whether to enable an alarm output in case of momentary power interruption or
undervoltage.
•An alarm output continues while Inverter control power supply remains.
Alarm output for momentary power interruption and undervoltage during stop (Examples 3 and 4)
(Example 3) b004: 00
While the Inverter is stopped
ON
Power supply
OFF
ON
RUN command
OFF
Inverter output
ON
Alarm
OFF
(Example 4) b004: 01
While the Inverter is stopped
ON
Power supply
OFF
ON
RUN command
OFF
Inverter output
ON
Alarm
OFF
Inverter output
Free running
Motor rotation speed
t2
t1
Alarm
RUN command
Inverter output
Power supply
RUN command
Inverter output
(Example 2) Duration of momentary power interruption
> Allowable duration of momentary power
interruption (b002)
Power supply
t0
t1
ON
OFF
While the Inverter is running
ON
Power supply
OFF
ON
OFF
ON
Alarm
OFF
While the Inverter is running
ON
OFF
ON
OFF
ON
Alarm
OFF
4-2 Function Mode
Free running
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