Unit-Specific Troubleshooting - Omron Sysmac NX Series User Manual

9 Troubleshooting
9-5

Unit-specific Troubleshooting

The following table shows the errors, their assumed causes, and corrections for the High-speed Ana-
log Input Units.
The converted values or analog input val-
ues are different from expected or the error
is too large.
9 - 36
Problem
NX-series Analog I/O Units User's Manual for High-speed Analog Input Units (W592)
Assumed cause
The user calibration error
is too large.
The required input is disa-
bled.
Wiring is incorrect. (Posi-
tive and negative are re-
versed etc.)
The input range is not cor-
rect.
The short-circuit cable is
longer than the specified
length.
A short-circuit cable is not
connected.
There is a problem with
the Unit.
The digital filter settings
are invalid.
Task assignment is incor-
rect.
The High-speed Analog
Input Unit is not installed
in the upright orientation.
A Relay Output Unit (NX-
OC££££) is connected
next to the High-speed
Analog Input Unit.
Correction
Execute the user calibration again.
Check to see if the setting is ena-
bled.
Check that the wiring is correct.
Check that the input range is correct.
Cut the short-circuit cable to the
specified length.
Connect a short-cut cable when the
input range is 0 to 20 mA or 4 to 20
mA.
Cycle the power supply to the Unit.
If the problem persists even after the
power supply is cycled, replace the
Unit.
Check that the digital low-pass filter
cutoff frequency, Filter 1 Moving
Average Count, and Filter 2 Moving
Average Count settings of the digital
filtering are correct.
Assign the primary periodic task or
the priority-5 periodic.
The High-speed Analog Input Units
can be installed only in the upright
orientation, regardless of the destina-
tion to which they are connected. In-
stall the High-speed Analog Input
Unit in the upright orientation.
Do not connect a Relay Output Unit
(NX-OC££££) next to the High-
speed Analog Input Unit.