Omron NJ Series Troubleshooting Manual

3-49
3 Error Tables
NJ-series Troubleshooting Manual (W503)
3-1 Errors by Source
3
3-1-3 Errors in the Motion Control Function Module
74250000 hex Homing
Direction
Limit Input
Detected
The limit signal in
the homing direc-
tion was detected
during a homing
operation.
• The Operation Selection at
Negative Limit Input or Opera-
tion Selection at Positive Limit
Input parameter is set to No
reverse turn.
• The location of the homing
input signal sensors, homing
settings, and homing start posi-
tion cause a limit input to be
reached.
• The input signal sensor wiring
is incorrect or the sensor is
faulty.
S NJ-series
CPU Unit
Motion Con-
trol User’s
Manual (Cat.
No. W507)
74260000 hex Homing Limit
Inputs
Detected in
Both Direc-
tions
The limit signals in
both directions
were detected dur-
ing a homing opera-
tion.
• The wiring of the limit signal is
incorrect.
• The limit sensor is installed in
the wrong location.
• The contact logic of the limit
signal is not correct.
• The limit sensor failed.
S Same as
above.
74270000 hex Home Prox-
imity/Homing
Opposite
Direction
Limit Input
Detected
The home proxim-
ity input and the
limit signal in the
direction opposite
to the homing direc-
tion were detected
during a homing
operation.
• The wiring of the home proxim-
ity signal or limit signal is incor-
rect.
• The home proximity sensor or
limit sensor is installed in the
wrong location.
• The contact logic of the home
proximity signal or limit signal is
not correct.
• The home proximity sensor or
limit sensor failed.
S Same as
above.
74280000 hex Home Prox-
imity/Homing
Direction
Limit Input
Detected
The home proxim-
ity input and the
limit signal in the
homing direction
were detected at
the same time dur-
ing a homing opera-
tion.
• The wiring of the home proxim-
ity signal or limit signal is incor-
rect.
• The home proximity sensor or
limit sensor is installed in the
wrong location.
• The contact logic of the home
proximity signal or limit signal is
not correct.
• The home proximity sensor or
limit sensor failed.
S Same as
above.
7429
0000 hex H
ome
Input/Hom-
ing Opposite
Direction
Limit Input
Detected
The home input and
the limit signal in
the direction oppo-
site to the homing
direction were
detected at the
same time during a
homing operation.
• The wiring of the home input
signal or limit signal is incorrect.
• The home input sensor or limit
sensor is installed in the wrong
location.
• The contact logic of the home
input signal or limit signal is not
correct.
• The home input signal output
device or limit sensor failed.
S Same as
above.
742A0000 hex Home
Input/Hom-
ing Direction
Limit Input
Detected
The home input and
the limit signal in
the homing direc-
tion were detected
at the same time
during a homing
operation.
• The wiring of the home input
signal or limit signal is incorrect.
• The home input sensor or limit
sensor is installed in the wrong
location.
• The contact logic of the home
input signal or limit signal is not
correct.
• The home input signal output
device or limit sensor failed.
S Same as
above.
Event code Event name Meaning Assumed cause
Level
Reference
Maj Prt Min Obs Info

Omron NJ Series Specifications

General

Program Capacity	Up to 128 MB
SD Card Slot	Yes
Power Supply Voltage	24 VDC
Motion Control	Yes
USB Ports	1
Operating Temperature	0°C to 55°C
Communication Interfaces	Ethernet/IP, EtherCAT, USB
Safety Function	Optional
Storage Temperature	-20°C to 75°C
Communication Ports	USB
Dimensions	Varies by model
Weight	Varies by model