Omron NX1P2 series User Manual

6 - 3
6 Troubleshooting
NX-series NX1P2 CPU Unit Hardware User’s Manual (W578)
6-1 Operation after an Error
6
6-1-2 Fatal Errors in the CPU Unit
*1 Refer to 6-1-2 Fatal Errors in the CPU Unit for information on individual errors.
*2 If the status of indicators shown above continues 30 seconds or longer, this error exists.
*3 Refer to 6-1-3 Non-fatal Errors in the CPU Unit for information on individual errors.
*4 The function module where the error occurred stops.
Precautions for Correct UsePrecautions for Correct Use
When an NX1P2 CPU Unit is used, a power shortage may occur at the CPU Rack depending on
the configuration of NX Units mounted to the CPU Unit. If one of the followings occurs, use the
Sysmac Studio to check if the power consumed by the Units on the CPU Rack exceeds the sup-
plied power.
• The CPU Unit is operating but the mounted NX Units do not operate.
• Power is supplied to the CPU Unit, but the CPU Unit does not turn ON.
Some errors are fatal and prevent the CPU Unit from operating. This section describes the errors that
cause the operation of the CPU Unit to stop. Communications with the Sysmac Studio or an HMI are
not possible if there is a fatal error in the Controller.
 Power Supply Error
Power is not supplied, the voltage is outside of the allowed range, or the Power Supply Unit is faulty.
 Hardware Initialization Error
This error occurs in the CPU Unit. It indicates a data error in minimum programs required to initialize
the hardware. Only the POWER indicator will be lit while the CPU Unit is starting, but if it is lit for 30
seconds or longer, then this error occurs.
 CPU Unit Error
This error occurs in the CPU Unit. It indicates that there is a hardware failure or that the CPU is run-
ning out of control due to temporary data corruption.
 System Initialization Error
This error occurs in the CPU Unit. It indicates a hardware failure or data error.
The RUN indicator will flash at 2-second intervals while the CPU Unit is starting, but if it flashes for
30 seconds or longer, then this error occurs.
Non-fatal error
in CPU Unit
Major fault
*3
Lit Not lit Lit Stopped. Possible. (Commu-
nications can be
connected from an
HMI if EtherNet/IP
is operating nor-
mally.)
Partial fault
*3
Lit Lit Flashing
(1-s intervals)
Continues.
*4
Minor fault
*3
Lit Lit Flashing
(1-s intervals)
Continues.
Observation
*3
Lit Lit Not lit Continues.
6-1-2 Fatal Errors in the CPU Unit
Types of Fatal Errors
CPU Unit operating status
CPU Unit User
program
execution
status
Communications
with Sysmac
Studio or an HMI
POWER
(green)
RUN (green) ERROR (red)

Omron NX1P2 series Specifications

General

Brand	Omron
Model	NX1P2 series
Category	Controller
Language	English