Omron NX701-1620, User Manual

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4 Installation and Wiring
4 - 4 NX-series CPU Unit Hardware User’s Manual (W535)
The setting ranges for the power OFF detection time are given in the following table.
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.
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.
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.
Power Supply Unit
model
Power supply input Power interruption voltage
NX-PA9001 100 to 200 VAC 85 VAC max.
NX-PD7001 24 VDC 20.4 VDC max.
Power supply
type
Power OFF detection time
AC power supply 30.5 to 45.5 ms
DC power supply 5.0 to 20.5 ms
Operation at Power OFF Operation
Power supply
type
Time required for a power interruption
AC power supply 45.5 ms or longer
DC power supply 20.5 ms or longer
Item Description
Power OFF detection
time 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.
System reset
Voltage drop
Executing user program
Processing after power interruption is confirmed.
AC: 85 V max.
DC: 20.4 V max.
Power interruption confirmed.
System stops.
(CPU Unit stops.)
Power OFF detection time
AC: 30.5 to 45.5 ms
DC: 5.0 to 20.5 ms
Voltage drop
AC: 85 V max.
DC: 20.4 V max.
Power
interruption
confirmed.
System stops.
(CPU Unit stops.)
Voltage
recovery
disabled
System reset Executing user program
Power OFF detection time
AC: 30.5 to 45.5 ms
DC: 5.0 to 20.5 ms
Processing after power interruption is confirmed.