Description
Key Technical Specifications
| Parameter | Value |
|---|---|
| Manufacturer | ABB |
| Model | NTDI01 |
| Product Type | Digital I/O Termination Unit |
| System Family | Bailey INFI 90 / Harmony Rack |
| Primary Function | Field wiring termination for digital I/O modules |
| Compatible Modules | IMDSI02, IMDSM04, IMDSM05, IMDSO01/02/03/04, IMASO01, IMFCS01, IMHSS01 and other supported INFI 90 modules |
| Field Signal Support | 24 V DC, 48 V DC, 120 VAC (application dependent) |
| Configuration | Jumper (Dipshunt) configurable |
| Mounting | Standard INFI 90 Field Termination Panel |
| Wire Size | 22 AWG to 12 AWG |
| Operating Temperature | 0 °C to +70 °C |
| Relative Humidity | Up to 95% non-condensing |
| Condition | New Original / New Surplus |
| Warranty | Typically 12 Months |
The NTDI01 serves as the field termination interface between plant wiring and compatible ABB Bailey INFI 90 digital input/output modules.
Product Introduction & Supply Chain Strategy
The ABB NTDI01 is a Digital I/O Termination Unit designed for Bailey INFI 90 and Harmony control systems. It provides organized field wiring termination and configurable signal routing between plant devices and compatible digital input/output modules, simplifying installation and long-term maintenance.
This product is a Brand New Surplus unit. It is not used, not pulled from a decommissioned plant, and not refurbished. Maintaining inventory of the NTDI01 helps reduce Total Cost of Ownership (TCO), shortens maintenance response times, and protects legacy control systems from End-of-Life supply shortages and the reliability concerns associated with refurbished hardware.
- NTDI01
- NTDI01
Installation & Configuration Guide
Stage 1 – Pre-Installation (Prep & Safety)
- Perform lock-out/tag-out procedures.
- Remove system and field power.
- Wear a grounded ESD wrist strap.
- Label and photograph all field wiring.
- Record all existing dipshunt (jumper) positions before removal.
Stage 2 – Removal
- Disconnect all field wiring from the terminal blocks.
- Remove the termination cables connecting to the I/O module.
- Unscrew the termination unit from the field termination panel.
- Inspect connectors for corrosion or mechanical damage.
Stage 3 – Installation (Clone & Seat)
- Install the replacement onto the termination panel.
- Duplicate every dipshunt configuration exactly from the original unit.
- Reconnect termination cables securely.
- Restore all field wiring according to the wiring documentation.
- Verify wire torque and terminal identification.
Stage 4 – Power-On & Testing
- Restore control power.
- Verify module communication with the controller.
- Test each digital input and output point individually.
- Confirm proper field signal detection.
- Return the process to normal operation after successful I/O verification.
Firmware/Software Versions & Upgrade Notes
- The is a passive termination unit and contains no firmware.
- Compatibility depends on the associated Bailey INFI 90 or Harmony digital I/O module rather than the termination unit itself.
- Before replacement, document the existing I/O module configuration and dipshunt settings.
- Verify that the replacement termination unit matches the installed digital input/output module.
- Never change jumper configurations without consulting the system wiring drawings, as incorrect settings may result in improper field signal routing.
Frequently Asked Questions (FAQ)
Q1. Is the an active electronic module?
No. The is a Digital I/O Termination Unit. It provides field wiring termination and configurable signal routing but does not perform signal processing itself.
Q2. Is this a genuine new ABB product?
Yes. This is a New Original / New Surplus unit. It has never been installed in production equipment and is not refurbished.
Q3. Which ABB systems use the ?
The is designed for ABB Bailey INFI 90 and Harmony Rack systems, where it interfaces with compatible digital input and output modules.
Q4. Can I replace the unit without recording the jumper settings?
No. Always document every dipshunt position before replacement. Incorrect jumper configuration can cause field signals to be routed improperly or prevent correct I/O operation.
Q5. Does the require firmware updates?
No. The contains no programmable firmware. Configuration is performed through physical jumper settings and the associated I/O module configuration.
Q6. What quality verification is performed before shipment?
Each New Surplus unit undergoes serial number verification, connector inspection, mechanical inspection, terminal continuity verification, ESD-controlled handling, and final quality inspection before shipment.
Q7. What inventory strategy is recommended?
For facilities operating Bailey INFI 90 or Harmony systems, maintain . This strategy minimizes lead time variability, supports vendor consolidation, reduces maintenance delays, and lowers the Total Cost of Ownership by ensuring rapid replacement of critical termination hardware.
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