Omron CJ2 CPU UNIT - Operation at Power off; Operation When Turning on the Power

7-13
7 Inspection and Maintenance
CJ2 CPU Unit Hardware User’s Manual
7-3 Power Supply Unit Replacement Time
7
z Operation When Turning ON the Power
The following initial display is shown when the power is turned ON, after which the replacement noti-
fication is displayed. The alarm output turns ON approximately 0.2 seconds after the power is turned
ON.
When replacement is already required, the alarm display will follow the initial display. The alarm out-
put will turn ON approximately 0.2 seconds after the power is turned ON, and then turn OFF after
approximately 5 seconds.
z Operation at Power OFF
When the power is turned OFF, the display will turn OFF after the PLC operation stops. The alarm
output will turn OFF after the display turns OFF.
*1 The values shown are reference values (calculated for a no-load status on the Power Supply Unit's output).
If replacement is already required, the display will turn OFF after the PLC operation stops. When the
display turns OFF, the alarm output will turn ON momentarily and then turn OFF again.
*1 The values shown are reference values (calculated for a no-load status on the Power Supply Unit's output).
ONOFF
Power ON
Display
Alarm
output
Display start
1 s max.
0.2 s max.
Initial display (approx. 1.1 s)
Replacement
required display
0.3 s
0.1 s
0.3 s
0.1 s 0.3 s
OFFONOFF
Power ON
Display
Alarm
output
1 s max.
0.2 s max.
Display start
Initial display
(approx. 1.1 s)
Alarm
display
Alarm output OFF
5 s max.
ON OFF
OFF
Display
Alarm
output
Replacement
notification display
Power
interruption
PLC operation
stopped
Notification display
Approx. 70 ms
*1
Alarm output
100 VAC: Approx. 2 s
200 VAC: Approx. 7 s
*1
OFF OFF
OFF
ON
Display
Alarm
output
Alarm display
Power
interruption
PLC operation
stopped
Notification display OFF
+ alarm output ON
Alarm output
Approx. 70 ms
*1
100 VAC: Approx. 2 s
200 VAC: Approx. 7 s
*1