Operating Sequence For The External Power Supply - Omron NSA12-TX11B User Manual

3-5 Starting the Industrial PC and Procedure after Power Interruption

3-5-2 Operating Sequence for the External Power Supply

3-5-2 Operating Sequence for the External Power Supply
External input
3
NSA built-in power supply
(excluding the 5-Vs auxiliary
power supply)
Note
3-18
The following diagram shows the power supply control sequence under normal
operating conditions.
Input voltage
held OFF for at
least 10 s.
NSA
NSA starts up
•
If the external input voltage is interrupted, it must remain OFF for at least 10 s
before it is turned back ON. (OFF/ON interval: 10 s min.)
•
If the external input voltage is interrupted during any operation, including
shutdown, that operation may not be successfully completed. Shut down the
NSA-series Industrial PC and turn OFF the external 24 V DC input voltage.
The NSA-series Industrial PC does not have UPS or other recovery functions
for power outages or power interruptions. These functions will have to be
provided externally (on the system side).
•
Make sure that the power supply connected to the NSA-series Industrial PC
satisfies the following specifications for NSA-series Industrial PC startup and
power outages.
•
The entire system may shut down depending on how the power is turned ON
or OFF. Follow the correct procedure for turning the power ON and OFF.
Do not turn OFF the input
voltage while the NSA is
operating.
OS shutdown begins
NSA operating
OS shutdown ends
10 s min.
NSA starts up