Omron NX1P2 series User Manual page 137

Operation at Power OFF
Execution of the user program is ended if a power interruption exceeds the time shown in the table
below. The processing after power interruption confirmation (described below) is performed, and then
the system (i.e., CPU Unit) stops.
Voltage drop
DC: 20.4 V max.
As shown in the following figure, the system (i.e. CPU Unit) will stop even if the voltage recovers after
the power interruption detection time.
Voltage drop
DC: 20.4 V max.
After stopping, the system will restart if the power supply remains recovery.
The table below defines the time that is used in the above two figures.
Item
Power OFF detection
time
Momentary Power Interruption with Continued Operation
Execution of the user program will continue if a momentary power interruption is less than the following
times.
Voltage drop
NX-series NX1P2 CPU Unit Hardware User's Manual (W578)
Power interruption confirmed.
Executing user program
Power OFF detection time
2 to 8 ms
Executing user program
Power OFF detection time
2 to 8 ms
The time from when the power supply voltage drops until the CPU Unit starts pro-
cessing after the power interruption is confirmed. The CPU Unit continues to
operate normally until the power interruption is confirmed.
Momentary power interruption time
from voltage drop until recovery
DC: 20.4 V max.
Executing user program
Power OFF detection time
2 to 8 ms
5 Installation and Wiring
System stops.
(CPU Unit stops.)
Processing after power interruption is confirmed.
Power
System stops.
interruption
(CPU Unit stops.)
Voltage
confirmed.
recovery
Processing after power interruption is confirmed.
Description
Voltage recovery
The CPU Unit will not interrupt
execution of user program
System reset
System reset
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