Description
Product Core Brief
- Model: SPASI23
- Brand: ABB
- Series: ABB Symphony Plus / Bailey INFI-90 / Ovation DCS
- Core Function: High-precision universal analog input module for process signal acquisition.
- Product Type: Analog input (AI) module
- Key Specs: 23 universal analog inputs | Voltage / current / thermocouple support | 16-bit resolution | ±0.1% FS accuracy | 24VDC supply
- Condition: New Original (New Surplus) / Factory Sealed
Product Introduction
When a DCS analog input module fails, operators may lose visibility into critical process variables such as temperature, pressure, flow, or level. The ABB SPASI23 is a universal analog input module designed for ABB Symphony Plus and legacy Bailey INFI-90 / Ovation distributed control systems, digitizing field signals for centralized monitoring and control.
This module matters because SPASI23 supports multiple signal types on a single card, reducing the need for separate specialized input modules. Before ordering, confirm the host system platform and backplane type, since module compatibility and firmware behavior may differ between Symphony Plus, INFI-90, and Ovation installations.
Key Technical Specifications
- Part Designation:
- Brand: ABB
- Application: Symphony Plus / Bailey INFI-90 / Ovation DCS systems
- Module Type: Universal analog input module
- Channels: 23 universal analog inputs
- Input Types: Voltage ±10V, ±5V, 0–10V, 0–5V; current 4–20mA, ±20mA; thermocouple J, K, T, E, R, S, B
- Resolution: 16-bit
- Accuracy: ±0.1% of full scale
- Sampling Rate: Up to 100 Hz per channel, typical
- Power Supply: 24VDC via backplane or module power interface
- Isolation: Channel-to-channel isolation; exact isolation rating depends on hardware revision
- Communication: Via Symphony / INFI-90 / Ovation backplane; HART pass-through may be available on selected versions
- Operating Temperature: -40…+70 °C
- Condition: New Original (New Surplus) / Factory Sealed
- Note: Exact channel configuration, HART capability, isolation specification, and backplane compatibility should be verified against the nameplate and ABB documentation.
Key Selling Points & Differentiators
- 23-channel universal input: Accepts voltage, current, and thermocouple signals on one module.
- DCS-grade accuracy: 16-bit resolution with ±0.1% FS accuracy supports stable process control.
- Legacy and modern system support: Suitable for Symphony Plus and Bailey INFI-90 / Ovation replacements.
- High channel density: Reduces rack space and wiring complexity compared with single-function cards.
- Factory-sealed supply: Shipped with ESD-safe handling and visual QA before dispatch.
- Not recommended for AC800M, AC800F, AC500 PLC, S800 I/O, or non-ABB DCS racks without confirmed backplane compatibility.
Quality Transparency SOP
- Visual inspection: Check module housing, front connectors, labeling, and mounting clips for damage.
- ESD-safe handling: Packed in anti-static protection to prevent damage to internal electronics.
- Connector verification: Inspect terminal blocks, backplane connectors, and status indicators.
- Nameplate cross-check: Confirm SPASI23 designation, hardware revision, and system compatibility before shipment.
- Functional validation: When compatible DCS infrastructure is available, verify power-up response, channel status, and analog reading stability. Full validation depends on the host controller and configuration.
Technical Risk Avoidance
❗ Confirm the host system. SPASI23 is intended for Symphony Plus / INFI-90 / Ovation DCS systems. Do not assume compatibility with AC800M, AC800F, or AC500 platforms.
❗ Verify signal type configuration. Voltage, current, and thermocouple inputs may require correct channel assignment and scaling.
❗ Check HART capability. Not all SPASI23 versions support HART pass-through; confirm against the nameplate and application requirement.
❗ Follow LOTO procedures. Although the module operates at 24VDC, the cabinet may contain higher voltages. Only qualified personnel should perform installation.
❗ Validate after replacement. Replaced modules should be checked for channel health, scaling, alarm thresholds, and process value consistency.
Buyer’s FAQ
Is this an original ABB part?
Yes. The listing is for ABB SPASI23 as a new original/new surplus, factory-sealed unit. We do not relabel third-party substitutes.
Which system does SPASI23 fit?
It is used in ABB Symphony Plus and legacy Bailey INFI-90 / Ovation DCS systems as a universal analog input module.
What signals does SPASI23 support?
It supports voltage, current, and thermocouple inputs, with 23 universal analog channels and 16-bit resolution.
What condition is the unit?
New Original (New Surplus) / Factory Sealed, unless otherwise stated in the product listing. Photos and batch details can be confirmed before dispatch.
Do you offer a warranty?
Yes. A standard warranty applies from receipt. Exact terms depend on stock batch and installation conditions. Installation should be performed by qualified DCS or control-system personnel.
