Momentary Power Interruption With Continued Operation; Processing After Power Interruption Is Confirmed; Resetting The Controller From The Sysmac Studio - Omron NJ501-1 Series User Manual

Momentary Power Interruption with Continued Operation

Execution of the user program will continue if a momentary power interruption is less than the following
times.
Power supply type
AC power supply
DC power supply
Voltage drop

Processing after Power Interruption Is Confirmed

After a power interruption is confirmed, the CPU Unit performs the following processing and then stops.
I/O refresh
Processing
Saving event log
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Resetting the Controller from the Sysmac Studio

You can reset the CPU Unit from the Sysmac Studio.
A reset from the Sysmac Studio performs the same operation as cycling the power supply of the Power
Supply Unit. Resetting is possible, however, only when the CPU Unit is in PROGRAM mode.
Confirm the following status before resetting the CPU Unit.
• Check the status of output loads.
• Make sure that SD Memory Card access is not in progress.
NJ-series CPU Unit Hardware User's Manual (W500)
Momentary power interruption time with continued operation
30.5 ms max.
22.5 ms max.
Momentary power interruption time from
voltage drop until recovery
Power interruption
detected.
AC: 85 V max.
DC: 19.2 V max.
Executing user program
Power interruption detection time
Power interruption detection delay 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
Item
Load outputs are turned OFF. Tag data links stop.
SD Memory Card Any writing is interrupted, files are closed, and the Card is
access in progress unmounted.
Transferring user pro- Interrupted. As a result, an error will occur the next time that the
gram (including online power is turned ON. The Controller will not operate.
editing)
User program execu- User program execution is aborted even during execution of an
tion instruction.
The time that a power interruption occurs and the cause (primary
power interruption of Power Supply Unit) of the interruption are
recorded.
4 Installation and Wiring
Voltage recovery
The CPU Unit will not interrupt
execution of user program.
Description
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