Omron NX1P2 series User Manual

5 Installation and Wiring
5 - 4
NX-series NX1P2 CPU Unit Hardware User’s Manual (W578)
The system will immediately enter RUN mode if RUN mode (default) is set as the startup operating
mode. The system will immediately enter PROGRAM mode if PROGRAM mode is set as the startup
operating mode.
A power OFF status is detected when the Unit power supply drops to the following voltage or lower or
when the following time has elapsed due to a momentary power interruption.
*1. Refer to 6-1-2 Fatal Errors in the CPU Unit on page 6-3 for information on the Power Supply Error, CPU
Unit Reset, Hardware Initialization Error, and System Initialization Error.
Operating Mode at Startup
5-1-2 Power OFF Operation
The NX-series Controller continues normal operation for a specific period of time even when a
momentary power interruption occurs. The Controller may therefore receive incorrect signals
from external devices that are affected by the momentary power interruption.
Take suitable actions, such as external fail-safe measures and interlock conditions, to monitor
the power supply voltage of the external devices as required.
Momentary power interruption
voltage
Power OFF detection time
20.4 VDC or less
2 ms min.
*1
to 8 ms max.
*1. A power OFF status may be detected when a momentary power in-
terruption of 2 ms or less occurs consecutively.
• RUN Mode Set as Startup Mode • PROGRAM Mode Set as Startup Mode
CPU Unit Startup
Time at Power ON
CPU Unit Startup
Time at Power ON
Operating mode
Power supply
RUN mode
RUN indicator
Operating mode
Power supply
RUN indicatorFlashing Lit
Startup PROGRAM mode
Flashing Not lit
Startup
WARNING

Omron NX1P2 series Specifications

General

Brand	Omron
Model	NX1P2 series
Category	Controller
Language	English