Troubles Specific To Each Type Of Nx Units; Troubles Common To All Analog Input Units And Analog Output Units; Analog Input Units - Omron NX-AD series User Manual

8 Troubleshooting
8-5 Troubles Specific to Each Type of NX
Units
8-5-1 Troubles Common to All Analog Input Units and Analog Output
Units
Problem
The converted values or
analog signal values are
different from expected or
the error is too large.
8-5-2

Analog Input Units

Problem
The disconnection indica-
tion does not clear.
The disconnection detec-
tion is not performed.
The user calibration is not
accepted.
8 - 36
Assumed cause
The user calibration error is
too large.
The required input or output is
disabled.
Wiring is incorrect. (Positive
and negative are reversed
etc.)
Assumed cause
The sensor is disconnected.
The input is significantly out of
sensor measurement range.
Wiring is incorrect. (Positive
and negative are reversed
etc.)
The user calibration error is
too large.
The disconnection detection
cannot be performed with
input types other than 4
mA.
Attempted to make calibration
with inputs outside the correc-
tion range.
NX-series Analog I/O Units User's Manual for Analog Input Units and Analog Output Units (W522)
Correction
Execute the user calibration again.
Check to see if the setting is enabled.
Check that the wiring is correct.
Correction
Restore the sensor connection.
Check the connected sensor and input type.
Check that the input is correct.
Check that the wiring is correct.
Execute the user calibration again.
Check the input type.
to
20
Input the voltage/current within the correction range
from the input device and make the calibration
again.
If the voltage/current within the correction range
cannot be input, change the connecting method to
the input device.