The ABB Bailey NDIS01 is a robust Digital Input Slave Module designed for the INFI 90 / Net 90 distributed control system (DCS). It is used to acquire discrete field signals from industrial equipment and transmit them to the control system for monitoring, sequencing, and logic execution.
This module plays a critical role in converting real-world on/off status signals—such as limit switches, alarm contacts, and relay outputs—into reliable digital data for the DCS. It is widely deployed in power generation plants, oil refineries, petrochemical facilities, and heavy industrial automation systems, where accurate and stable digital signal acquisition is essential for safe plant operation.
Technical Specifications
| Item | Specification |
|---|---|
| Product Type | Digital Input Slave Module |
| System | ABB Bailey INFI 90 / Net 90 DCS |
| Function | Digital signal acquisition and transmission |
| Input Type | Dry contact / voltage-based digital signals |
| Input Channels | Multi-channel discrete input |
| Signal Levels | Industrial standard DC logic levels |
| Interface | INFI 90 proprietary backplane bus |
| Response Time | Fast industrial-grade input detection |
| Isolation | Channel-to-system electrical isolation |
| Diagnostics | Input status and module health monitoring |
| Compatibility | ABB Bailey control and communication modules |
| Module Type | Rack-mounted PCB module |
| Power Supply | System backplane powered |
| Operating Temperature | 0°C to 70°C |
| Humidity | 5%–95% non-condensing |
Dimensions & Weight
| Item | Value |
|---|---|
| Size (L × W × H mm) | 102 × 127 × 178 mm |
| Weight | approx. 0.6 – 1.1 kg |
Recommended Related Models
- ABB NDIS02 – digital input slave module (enhanced version)
- ABB NDSO series – digital output modules
- ABB NBIM01 / NBIM02 – network interface modules
- ABB NBCM01 – communication modules
- ABB IMMFP11 / IMMFP12 – multifunction processor modules
Popular ABB Bailey Models
- INFI 90 digital I/O module family
- Bailey Harmony distributed control systems
- ABB Symphony automation platforms
- Net 90 industrial I/O architecture
- Distributed control system digital signal modules
