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This termination unit provides field wiring termination for multipurpose I/O signals. It connects field devices to the main I/O module in the INFI 90 rack. The unit mounts on a DIN rail as a passive termination assembly.
Technical specifications
| Parameter | Specification |
|---|---|
| Brand | ABB Bailey |
| Model | ABB Bailey NIMP01 |
| Product Family | INFI 90 |
| Category | Termination Unit |
| Number of Channels | 32 (thirty-two) termination points |
| Terminal Type | Screw clamp (fixed) |
| Wire Gauge | 24 to 14 AWG |
| Voltage Rating | 250V AC / 30V DC maximum |
| Current Rating | 2A per terminal |
| Signal Types | Digital I/O, analog I/O, pulse inputs |
| Connector Type (I/O side) | 4 x 20-pin ribbon cable headers |
| Connector Type (Field side) | 32 x screw terminals (2 per channel) |
| Component Count | 1 PCB, 32 terminal blocks, 4 ribbon connectors |
| Status Indicators | None (passive device) |
| Power Supply | None (passive termination) |
| Dimensions (L x W x H) | Approx. 22 cm x 12 cm x 5 cm |
| Weight | Approx. 0.45 kg |
| Energy Storage | None (no battery or capacitor) |
| Operating Temperature | -20°C to 70°C |
| Mounting | DIN rail (EN 50022) |
| Compatible Modules | IMPM, IMDSO, IMASO series |
Detailed Technical Analysis
This termination unit provides thirty-two screw terminal pairs for field signal wiring. Four ribbon cables connect the termination unit to the main I/O module. The passive design contains no active electronic components or status indicators. Each terminal accepts wire sizes from 24 to 14 AWG.
Now let us examine its construction features. The unit uses fixed screw terminal blocks for reliable field connections. Four 20-pin ribbon cable headers link to the I/O module above. The board contains only passive traces and connector components. This termination unit requires no external power supply for operation.
This termination unit weighs 0.45 kilograms for stable DIN rail mounting. Its wide temperature range from -20°C to 70°C suits harsh environments. The ABB Bailey NIMP01 serves multipurpose I/O including digital, analog, and pulse signals. The passive design ensures long-term reliability with no maintenance needs.
Installation and Wiring Guidelines
You mount this unit on a standard DIN rail in your control cabinet. Connect the ribbon cables from the I/O module to the 20-pin headers. Wire each field device to its designated screw terminal pair. Use ferrule-terminated wires for reliable screw clamp connections.
Label each channel clearly for easy identification during troubleshooting. Keep field wiring separate from high-voltage AC cables to reduce noise. The passive design requires no configuration or addressing at startup. Always power down the I/O module before connecting or disconnecting ribbon cables.
Practical Applications
Engineers use this termination unit for INFI 90 system expansion and repair. It organizes field wiring for mixed I/O signal types. This component also works in legacy DCS retrofit projects. Its 32 channels suit large I/O termination requirements.
Summary of Features
To conclude, this termination unit provides 32 screw terminal channels for multipurpose I/O. It weighs 0.45 kilograms and requires no external power. Choose ABB Bailey NIMP01 for reliable field signal termination in INFI 90 systems.