Omron CJ - 09-2009 Operation Manual page 226

Power Supply Units
Maintenance Function
Using the TEST Switch
Note
Display and Alarm Output Operation
Normal Display:
Replacement Notification
Display
Remaining service life:
1 year to 6 months
Alarm output
Operation at Powerup
Power ON
Display
Alarm
OFF
output
178
The Flag is programmed to allow for the delay in the alarm output at system
startup. The Flag does not turn ON when the alarm output is ON (normal
operation). When the alarm output turns OFF (replacement required), the
Flag turns ON, and the replacement notification can be monitored from the
system.
• Press the TEST switch for at least 3 seconds to display "A02" and force
the alarm output OFF. Release the switch to return to normal operating
status.
The TEST switch is used initially or periodically to check the connection
status between the alarm output and external devices.
• Press the TEST switch for less than 3 seconds to display the unit version
information for the Power Supply Unit.
1. Replace the Power Supply Unit within 6 months when the display on the
front panel of the Power Supply Unit alternates between 0.0 and A02 or the
alarm output automatically turns OFF.
2. Maintain an ambient storage temperature of −20 to 30°C and humidity of
25% to 70% when storing the product (with the power turned OFF) for
longer than 3 months to keep the replacement notification function in opti-
mum working condition. The replacement time is calculated from when the
power is turned ON only. The precision of the replacement period will de-
cline if the electrolytic capacitor deteriorates during storage.
When 6 months or less are remaining until replacement is required, the dis-
play will alternate between "0.0" and "A02" (in 2 second intervals), and the
alarm output will turn OFF.
Remaining service life: 6 months max.
2 s 2 s
ON
The following initial display is shown when the power is turned ON, after which
the replacement notification is displayed. The alarm output turns ON approxi-
mately 0.2 seconds after the power is turned ON.
Display start
Initial display (approx. 1.1 s)
0.3 s 0.1 s
1 s max.
0.2 s max.
When replacement is already required, the alarm display will follow the initial
display. The alarm output will turn ON approximately 0.2 seconds after the
power is turned ON, and then turn OFF after approximately 5 seconds.
2 s 2 s 2 s
OFF
0.3 s 0.1 s 0.3 s
ON
Section 3-4
Replacement
required
display