Omron NJ501-1400 User Manual page 124

4 Installation and Wiring
The following table gives the voltage conditions for a power interruption.
Power Supply Unit model
NJ-PA3001
NJ-PD3001
The setting ranges for the power OFF detection time are given in the following table.
Power supply type
AC power supply
DC power supply
Operation at Power OFF Operation
Execution of the user program is ended if a power interruption exceeds the power OFF detection time,
as shown below. The processing after power interruption confirmation (described below) is performed,
and then the system (i.e., CPU Unit) stops.
Power supply type
AC power supply
DC power supply
Voltage drop
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
Power interruption detection time:
Power interruption detection delay time:
Power OFF detection time:
4-4
Power supply input
100 to 200 VAC
24 VDC
Power OFF detection time
30.5 to 45.5 ms
22.5 to 25.5 ms
Time required for a power interruption
45.5 ms or longer
25.5 ms or longer
Power interruption
Power interruption
detected.
AC: 85 V max.
DC: 19.2 V max.
Executing user program
Power interruption Power interruption
detection delay time:
detection time
20.5 ms (fixed)
AC: 10 to 25 ms
DC: 2 to 5 ms
Power OFF detection time
AC: 30.5 to 45.5 ms
DC: 22.5 to 25.5 ms
Power interruption
Power interruption
detected.
AC: 85 V max.
DC: 19.2 V max.
Executing user program
Power interruption
Power interruption
detection delay time:
detection time
20.5 ms (fixed)
AC: 10 to 25 ms
DC: 2 to 5 ms
Power OFF detection time
AC: 30.5 to 45.5 ms
DC: 22.5 to 25.5 ms
Power interruption voltage
85 VAC max.
19.2 VDC max.
System stops.
(CPU Unit stops.)
confirmed.
Processing after power interruption is confirmed System reset
System stops.
confirmed.
(CPU Unit stops.)
Voltage recovery
disabled.
Processing after power interruption is confirmed
The time from when the input power supply voltage drops
until a power interruption is detected. The power interrup-
tion is detected by the Power Supply Unit.
The standby time from when the Power Supply Unit
detects the power interruption until the CPU Unit starts
processing after the power interruption is confirmed.
The time from when the power supply voltage drops until
the CPU Unit starts processing after the power interruption
is confirmed. The CPU Unit continues to operate normally
until the power interruption is confirmed.
NJ-series CPU Unit Hardware User's Manual (W500)
System reset