Omron NX701-1620, User Manual

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4 Installation and Wiring
NX-series CPU Unit Hardware User’s Manual (W535)
4-1 Pro
cessing
at Po
wer ON an
d Po
wer OFF
4
4-
1-3 R
esetting the
Contro
ller fr
om the Sysmac Studio
Execution of the user program will continue if a momentary power interruption is less than the following
times.
After a power interruption is confirmed, the CPU Unit performs the following processing and then stops.
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.
Momentary Power Interruption with Continued Operation
Power supply
type
Momentary power interruption time
with continued operation
AC power supply 30.5 ms max.
DC power supply 5.0 ms max.
Processing After Power Interruption Is Confirmed
Item Description
I/O refresh Load outputs are turned OFF. Tag data links stop.
Processing SD Memory Card access in
progress Any writing is interrupted, files are closed, and the Card is
unmounted.
Transferring user program
(including online editing) Interrupted.
As a result, an error will occur the next time that the power is turned
ON. The Controller will not operate.
User program execution User program execution is aborted even during execution of an
instruction.
Saving event log The time that a power interruption occurs and the cause (primary
power interruption of Power Supply Unit) of the interruption are
recorded.
4-1-3 Resetting the Controller from the Sysmac Studio
The CPU Unit will not interrupt
execution of user program
Momentary power interruption time
from voltage drop until recovery
Voltage drop
Executing user program
AC: 85 V max.
DC: 20.4 V max.
Power OFF detection time
AC: 30.5 to 45.5 ms
DC: 5.0 to 20.5 ms
Voltage recovery