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- ABB Bailey
- NTAO01
- Analog Output Termination Unit
- Sweden (SE)
- 127 × 51 × 127 mm
- 0.2 kg
- Xiamen, China
- New & In Stock
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Product Overview
The ABB Bailey NTAO01 Infi 90 Analog Output Termination Unit is used to terminate and interface analog output signals within an ABB Bailey Infi 90 control system. It provides the field-side connection point between the analog output circuitry and external devices such as control valves, actuators, positioners, and other analog-controlled equipment.
In an Infi 90 control cabinet, the NTAO01 is typically used where analog output channels from the control system must be routed cleanly to field wiring. The termination arrangement simplifies cabinet wiring and makes individual signal connections easier to identify during commissioning and maintenance.
A typical application is a process-control loop in which the control system calculates an output value and sends an analog command to a valve positioner. The NTAO01 provides the termination interface through which that signal is connected to the corresponding field circuit.
For replacement work, technicians should verify the complete NTAO01 model, existing termination wiring, channel assignments, cable labeling, and the associated Infi 90 I/O configuration before disconnecting the installed unit.
Technical Specifications
| ParameterSpecification | |
|---|---|
| Manufacturer | ABB Bailey |
| Model | NTAO01 |
| Product Family | Infi 90 |
| Product Type | Analog Output Termination Unit |
| Primary Function | Analog Output Signal Termination |
| System Role | Field Wiring Interface |
| Application | Industrial Automation / Process Control |
| Installation | Infi 90 Control System |
| Dimensions | 127 × 51 × 127 mm |
| Weight | 0.2 kg |
Product Features
- ABB Bailey Infi 90 Analog Output Termination Unit
- Model NTAO01
- Provides termination for analog output signal wiring
- Used with Infi 90 control-system installations
- Provides an organized interface between I/O circuitry and field wiring
- Suitable for analog control loops
- Applicable to process-control cabinet installations
- Simplifies signal identification during maintenance
- Supports field connections for analog-controlled equipment
- Suitable for existing Infi 90 system maintenance and replacement
Working Principle
The NTAO01 provides the termination point through which analog output signals from the Infi 90 control system are connected to external field circuits.
Infi 90 Analog Output → NTAO01 → Field Wiring → Valve / Actuator / Control Device
The control system generates an analog output according to the configured control strategy. The signal is routed through the termination unit and then transferred through the associated field wiring to the connected device.
In a process-control application, the connected field device may use the analog command to regulate a process variable. Depending on the specific loop, typical applications can include:
- Control valve positioning
- Actuator command signals
- Process control outputs
- Speed or setpoint signals
- Other analog-controlled field equipment
The NTAO01 primarily handles the termination and organization of the signal connection; the actual control calculation is performed by the Infi 90 control system.
Role in an Infi 90 Control Architecture
The NTAO01 operates at the field termination layer of an ABB Bailey Infi 90 control architecture.
Infi 90 Controller / I/O → Analog Output Circuit → NTAO01 → Field Wiring → Final Control Element
| System ElementFunction | |
|---|---|
| NTAO01 | Terminates and interfaces analog output wiring |
| Infi 90 Controller | Executes configured control strategies |
| Analog Output Module | Generates analog output signals |
| Field Wiring | Carries analog signals to field equipment |
| Control Valve | Receives an analog command for process regulation |
| Actuator / Positioner | Converts the control signal into equipment movement |
| Process Instrumentation | Provides measurement and feedback information |
| Operator Station | Provides monitoring and control functions |
Industrial Applications
| ApplicationTypical Use | |
|---|---|
| Process Control | Terminating analog control signals for field devices |
| Chemical Processing | Connecting analog outputs to valves and actuators |
| Oil and Gas | Supporting process-control output loops |
| Power Generation | Routing controller outputs to plant control equipment |
| Water Treatment | Connecting analog signals to pumps, valves, and regulating equipment |
| Manufacturing | Providing organized analog output termination in control cabinets |
| Utility Systems | Supporting analog control of industrial equipment |
| Infi 90 System Maintenance | Replacing existing analog output termination hardware |
Installation and Maintenance
- Confirm the complete NTAO01 model before installation or replacement.
- Identify the associated Infi 90 analog output module and channel assignments.
- Record the existing field wiring before disconnecting the termination unit.
- Label each connected conductor according to the existing wiring documentation.
- Inspect the termination terminals and wiring for looseness or physical damage.
- Verify that the replacement unit is suitable for the existing Infi 90 configuration.
- Install the NTAO01 in the approved control cabinet location.
- Reconnect field wiring according to the documented channel arrangement.
- Check signal polarity and terminal identification before energizing the circuit.
- Verify analog output values from the control system.
- Confirm the response of the connected valve, actuator, or other field device.
- Record the final wiring and channel configuration for future maintenance.
When troubleshooting an analog output problem, check the control-system output, termination unit, field wiring, and connected field device as separate sections of the same signal path.
Related Components
| ComponentFunction | |
|---|---|
| NTAO01 | Provides analog output signal termination |
| Infi 90 Analog Output Module | Generates analog output signals |
| Infi 90 Controller | Executes control logic and process strategies |
| Field Terminal Wiring | Carries analog output signals to field equipment |
| Control Valve | Uses the analog command for process regulation |
| Valve Positioner | Converts the control signal into valve positioning |
| Actuator | Performs the commanded mechanical action |
| Operator Station | Provides process monitoring and control |
Recommended Related Models
| Model / Product FamilyProduct TypeTypical Application | ||
|---|---|---|
| ABB Bailey NTAI01 | Analog Input Termination Unit | Termination of analog input field signals |
| ABB Bailey NTDI01 | Digital Input Termination Unit | Termination of digital input signals |
| ABB Bailey NTDO01 | Digital Output Termination Unit | Termination of digital output signals |
| ABB Bailey Infi 90 Analog I/O Series | Analog I/O Modules | Process signal acquisition and control |
| ABB Bailey Infi 90 Digital I/O Series | Digital I/O Modules | Discrete field signal interface |
| ABB Bailey Infi 90 Controller Series | Process Controllers | Control logic and process regulation |
Key Advantages
- ABB Bailey Infi 90 analog output termination interface.
- Provides an organized connection point for analog output wiring.
- Suitable for process-control cabinets.
- Supports analog control loops connected to field equipment.
- Simplifies field wiring identification and maintenance.
- Applicable to existing Infi 90 installations.
- Suitable for analog output termination replacement projects.
Technical FAQs
What is the ABB Bailey NTAO01 used for?
The NTAO01 is an Analog Output Termination Unit used to interface analog output circuitry from an Infi 90 control system with the associated field wiring and connected equipment.
What type of field equipment can be connected through an NTAO01?
Typical applications include control valves, valve positioners, actuators, and other field devices that receive analog control signals. The actual application depends on the installed Infi 90 I/O configuration.
What should be documented before replacing an NTAO01?
The existing terminal assignments, field-wire labels, analog output channel numbers, and associated I/O module should be documented before disconnecting the unit. This helps prevent channel-crossing or wiring errors during reinstallation.
How should an engineer troubleshoot an analog output problem involving the NTAO01?
The signal path should be checked from the Infi 90 analog output module through the NTAO01 and field wiring to the final control device. Comparing the commanded output with the signal measured at the termination and field-device sides can help identify where the problem occurs.