ABB NTAI02 Thermocouple Input Termination Unit · INFI 90
ABB NTAI02 thermocouple input unit
INFI 90 termination unit
ABB PLC thermocouple termination
Place of Origin:
SWEDEN
Brand Name:
ABB
Model Number:
NTAI02
ABB NTAI02 thermocouple input unit
,INFI 90 termination unit
,ABB PLC thermocouple termination
ABB NTAI02 Thermocouple Input Termination Unit
NTAI02 is a field termination unit for thermocouple and millivolt inputs in the Bailey INFI 90 system. It terminates incoming field wiring and connects the signal path to associated IMASM02 thermocouple slave modules.
A field-side interface in the INFI 90 measurement path.
NTAI02 handles field termination, local cold-junction reference and calibration access rather than performing the analog input processing itself.
The NTAI02 is a single printed circuit board that mounts in an NFTP01 Field Termination Panel. Its on-board terminal blocks accept field input wiring for 16 thermocouple or millivolt inputs.
One NTAI02 can connect one or two IMASM02 Thermocouple Input Slave Modules through separate cables. The signals pass through the slave modules to the IMAMM03 Analog Master Module.
Core data from the NTAI02 documentation
Only parameters identified in the available NTAI02 technical documentation are included.
From field thermocouple to the INFI 90 input path.
The termination unit is one stage of the installed measurement chain.
Field equipment
Thermocouple or millivolt signals enter through the field wiring connected to the termination unit.
NTAI02
Field terminals receive the signals. Cold-junction reference RTDs and calibration access are provided on the TU.
IMASM02
One or two Thermocouple Input Slave Modules receive the terminated signals through separate cables.
IMAMM03
The slave-module signals continue to the Analog Master Module within the INFI 90 architecture.
Replace the termination unit without losing the field mapping.
The replacement procedure focuses on power isolation, wiring identification and restoration of the existing cable arrangement.
- 01 Turn off cabinet power and any external supplies providing I/O power to the TU.
- 02 Remove terminal block covers and label field wiring before disconnecting it.
- 03 Label and disconnect cables, I/O power and system ground connected to the TU.
- 04 Remove the two screws securing the termination unit to the field termination panel.
- 05 Install the replacement unit, reconnect wiring and cables, then restore the terminal covers.
- 06 Re-energize the applicable supplies and calibrate the replacement TU / connected slave path according to the applicable IMAMM03 procedure.
Calibration access
Internal and external test points together with a calibration-select switch are provided on the TU.
The documented arrangement allows calibration access using internal or external calibration voltage sources.
Calibration should be performed as part of the associated IMASM02 / IMAMM03 signal path and according to the applicable system procedure.
Match the installed architecture before substitution.
Compatibility is separated from replacement status so associated hardware is not mistaken for a substitute.
IMASM02 + IMAMM03
The documented signal path uses one or two IMASM02 slave modules with the NTAI02, with the slave path connected to the IMAMM03 Analog Master Module.
NFTP01
NTAI02 mounts in the NFTP01 Field Termination Panel. The panel, field cables and existing termination arrangement should be checked before installation.
Not identified
The cited NTAI02 documentation does not identify a one-for-one successor termination unit. Any migration to another I/O architecture requires system-level verification.
Where a termination-unit fault becomes a maintenance problem.
Search terms for NTAI02 usually appear around field-side signal loss, termination faults and planned shutdown spares.
Diagnose the complete path before replacing the TU.
If multiple channels are affected, check common wiring, interconnect cables, IMASM02 modules, power and the IMAMM03 path before concluding that the NTAI02 is defective.
Three checkpoints before changing the board.
Use the installed signal path to distinguish a termination problem from a cable, slave or master-module problem.
Field wiring
Confirm conductor identification, terminal condition and the field-side circuit before removing the TU.
TU-to-slave cable
Verify the interconnect between NTAI02 and IMASM02. A cable problem can present as an apparent board failure.
IMASM02 / IMAMM03
If termination and cabling are intact, continue through the associated slave and master path using the system procedure.
Identification first. Dispatch second.
Commercial terms are confirmed with the quotation and order. The handling points below clarify what to expect from AMIKON.
- Identification Part number and available unit condition are checked before quotation.
- Testing Where applicable to the agreed condition, inspection and functional testing are completed before dispatch.
- Packaging Industrial spare parts are packed to reduce handling and transportation risk.
- DOA Report any dead-on-arrival condition promptly with order details and supporting evidence.
- Warranty Warranty coverage follows the quotation and order terms. Incorrect installation or post-delivery damage is not automatically covered.
- Returns Contact AMIKON before returning the item so the applicable return procedure can be confirmed.
Installed system information
Include the installed system with the NTAI02 part number. This helps distinguish the termination board from the associated IMASM02, IMAMM03, cable or panel hardware.
Nameplate photograph
If the existing unit is available, a clear nameplate photograph is useful for final identification before shipment.
Other industrial automation inventory
Listed for product discovery only. These items are not presented as direct replacements for NTAI02.
Ordering an NTAI02 with confidence.
The most useful information is the information that helps identify the correct field termination assembly.
Request an NTAI02 quotation
Send the six items below with your enquiry. For shutdown-critical requirements, include the installed system information and a nameplate photo whenever possible.
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