ABB SPNIS21 Bailey Symphony Network Interface Module
Product Overview
The ABB SPNIS21 is a high-performance Network Interface Module (NIM) designed for the ABB Bailey INFI 90 and Symphony distributed control systems (DCS). It functions as a specialized communication bridge, facilitating high-speed data exchange between the controller and the plant’s communication loop.
In specific system architectures, the SPNIS21 also operates within the Bailey NIMP (Non-Isolated Module Processor) family, where it can serve as a non-isolated analog input acquisition board. This dual-role capability allows it to either manage complex network routing or process up to 16 analog channels (such as 4–20 mA and 0–10 VDC). Engineered for the rigorous demands of power generation and petrochemical processing, the module includes integrated noise suppression and hardware diagnostics to ensure maximum system availability and data integrity.
Technical Specifications
Detailed hardware parameters for the SPNIS21:
| Parameter | Specification Details |
| Model Number | SPNIS21 |
| Manufacturer | ABB / Bailey |
| Product Type | Network Interface Module (NIM) |
| System Platform | INFI 90, Symphony, S90 DCS |
| Function | Network Communication Interface / Analog Data Acquisition |
| Analog Channels | Up to 16 channels (in NIMP configuration) |
| Signal Range | 4–20 mA, 0–10 VDC, 1–5 VDC |
| Isolation | Non-isolated (with industrial noise filtering) |
| Communication Support | RCOM, AF100, Plant Loop Interface |
| Status Monitoring | Front-panel LED indicators (Power, Run, Fault) |
| Battery Information | 5g Lithium Button Cell (for memory backup) |
| Physical Dimensions | 7.37 cm x 27.18 cm x 35.81 cm |
| Net Weight | 0.567 kg |
| Shipping Weight | 2.0 kg |
| HS Code | 851762 (Communication Apparatus) |
What's clients say about us
Excellent Emergency Support!
Our production line was down due to a faulty Bently Nevada monitor. We found it in stock here and they shipped it via DHL immediately. Back in operation within 48 hours—truly a lifesaver for our plant.
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Finding brand new, original modules is critical for our safety. This team delivers factory-fresh components with full certification. Their commitment to only selling new products makes them our most trusted partner.
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Engineering Lead, GermanyTop-tier Service and Quality
We have sourced Honeywell and Schneider parts here for two years. Every shipment arrives well-packaged with original factory seals intact. Clear communication and the best lead times in the industry.
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Operations Director, GermanyRelated Products
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Guide
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