NTDI02
Sixteen-Signal Hot Switch Termination Unit - Digital I/O Termination Unit
Lifecycle note: Use the unit nameplate and current ABB documentation as final references before approving a replacement.
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+86 15359408275Sixteen-Signal Hot Switch Termination Unit - ABB Symphony Plus / Bailey INFI 90
ABB NTDI02 is a hot switch termination unit that provides signal paths for sixteen field signals in compatible Symphony Plus digital I/O arrangements.
ABB documentation lists NTDI02 for use with SPDSI, SPDSO, SPDSM and SPASO modules. The selected module type, field wiring and redundancy arrangement determine the exact application.
Before replacement, label every terminal and cable, verify the paired I/O module and preserve the installed hot-switch configuration. Commission each signal path and channel diagnostic according to the Symphony Plus procedure.
| Manufacturer | ABB |
|---|---|
| Complete model | NTDI02 |
| Product type | Digital I/O Termination Unit |
| System family | ABB Symphony Plus / Bailey INFI 90 |
| Model | NTDI02 |
| Product type | Hot switch termination unit |
| Field signal paths | 16 |
| Compatible input module | SPDSI |
| Compatible output modules | SPDSO and SPDSM |
| Compatible sequence output module | SPASO |
| System family | ABB Symphony Plus / Bailey INFI 90 |
ABB NTDI02 terminates sixteen field-signal paths and supports hot-switch digital I/O arrangements in compatible Symphony Plus hardware.
ABB NTDI02 provides documented signal paths for sixteen field signals.
ABB documentation associates ABB NTDI02 with SPDSI, SPDSO, SPDSM and SPASO modules, subject to the installed I/O design.
No. ABB NTDI02 is a termination unit; the paired SPDSI, SPDSO, SPDSM or SPASO module performs the corresponding I/O processing.
Before replacing ABB NTDI02, record all terminal numbers, cable destinations, paired I/O module, redundancy arrangement and cabinet position.
Another NTDI revision should not replace ABB NTDI02 unless terminal layout, signal paths, paired-module compatibility and hot-switch arrangement are verified.
Provide the ABB NTDI02 nameplate, paired I/O module, field-signal count, cabinet arrangement, quantity, condition requirement and destination.
Send the complete model, revision, quantity, destination and nameplate photo so the exact hardware identity can be checked.
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