Omron NX-AD series User Manual (English)

Questions and Answers:

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Justin GonzalezAug 23, 2025
What to do if there is NX Unit I/O Communications Error in Omron I/O Systems?
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  jennifer96Aug 23, 2025
  To resolve an NX Unit I/O Communications Error in Omron I/O Systems, check for errors in the CPU Unit and correct them. Ensure the NX Units and End Cover are securely mounted and fastened with End Plates. Verify the Unit power supply cable is correctly wired to the NX Units and replace it if broken. Ensure the Unit power supply voltage is within the specified range and its capacity is sufficient. If the error persists, consider replacing the NX Unit.
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Benjamin KimAug 25, 2025
What to do if there is NX Unit Output Synchronization Error in Omron NX-AD?
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  edwardscurtisAug 25, 2025
  If you encounter an NX Unit Output Synchronization Error in Omron I/O Systems, start by checking the CPU Unit for any errors and correct them. Then, inspect the communications cable connected to the Communications Coupler Unit for any damage or faulty connections, replacing or correctly wiring the cable as needed. If noise is affecting the communications cable, adjust the Consecutive Communications Error Detection Count parameter for the Communications Coupler Unit and implement noise countermeasures.
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Sarah MoralesAug 25, 2025
How to fix Non-volatile Memory Hardware Error in Omron I/O Systems?
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  John TylerAug 26, 2025
  To resolve a Non-volatile Memory Hardware Error in Omron I/O Systems, cycle the power supply to the Unit or restart the NX bus for CPU Units. For Communications Coupler Units, cycle the power supply to the Unit or restart the Slave Terminal. If the errors are detected in the Controller, reset all of the errors in the Controller.
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nicolelopezAug 26, 2025
What to do for Control Parameter Error in Master in Omron NX-AD?
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  Brian ChurchAug 26, 2025
  If you are experiencing a Control Parameter Error in Master for Omron I/O Systems, download the Unit operation settings of the NX Unit again. If the error persists, replace the CPU Unit or Communications Coupler Unit, depending on which is applicable.
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Sheila RowlandAug 27, 2025
How to fix NX Unit Clock Not Synchronized Error in Omron NX-AD I/O Systems?
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  Norma MonroeAug 27, 2025
  To resolve an NX Unit Clock Not Synchronized Error in Omron I/O Systems, replace the specific NX Unit if the error occurs only in that unit. If the error occurs in all NX Units mounted on a CPU Unit, replace the CPU Unit.
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Mr. Daniel CoxAug 28, 2025
What to do if Analog Unit Calibration Parameter Error occurs in Omron NX-AD?
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  huynhcolleenAug 28, 2025
  To resolve an Analog Unit Calibration Parameter Error in Omron I/O Systems, write the calibration values to the Analog Unit again.
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Teresa MartinezAug 29, 2025
What to do if Unit Calibration Value Parity Error occurs in Omron NX-AD?
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  Clifford MirandaAug 29, 2025
  To address a Unit Calibration Value Parity Error in Omron I/O Systems, cycle the power supply to the NX Unit. If the error persists, replace the NX Unit.
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Jackie GreenAug 30, 2025
What to do if Unit I/O Disconnection Detected for Channel 1 in Omron NX-AD?
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  Austin HerreraAug 30, 2025
  If a Unit I/O Disconnection is detected for Channel 1 in Omron I/O Systems, check the input wiring for breaks and replace the cable if necessary. Also, check the input wiring for bad connections and reconnect any that are found.
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Jose OlsonAug 31, 2025
What to do if Unit I/O Disconnection Detected for Channel 2 in Omron NX-AD?
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  Barry LopezAug 31, 2025
  If a Unit I/O Disconnection is detected for Channel 2 in Omron I/O Systems, check the input wiring for breaks and replace the cable if necessary. Also, check the input wiring for bad connections and reconnect any that are found.
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Victoria MillerSep 1, 2025
What to do if Unit I/O Disconnection Detected for Channel 3 in Omron I/O Systems?
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  Valerie SmithSep 1, 2025
  If a Unit I/O Disconnection is detected for Channel 3 in Omron I/O Systems, check the input wiring for breaks and replace the cable if necessary. Also, check the input wiring for bad connections and reconnect any that are found.

Omron NX-AD series Specifications

General

Category	Analog Input Unit
Operating Temperature	0 to 55 °C
Storage Temperature	-25 to 70 °C
Product Series	NX-AD
Isolation Method	Photocoupler isolation
Input Range	Voltage: 0 to 5V, 1 to 5V, 0 to 10V, -10 to 10V; Current: 0 to 20mA, 4 to 20mA
No. of inputs	4
Accuracy	±0.1 % of F.S.
Input Type	Voltage/Current
Voltage Input Range	0 to 5 V, 1 to 5 V, 0 to 10 V, -10 to +10 V
Current Input Range	0 to 20 mA, 4 to 20 mA
Compatible Controller	NX Series CPU Units
Isolation	Between I/O terminal and internal circuit: Photocoupler isolation