ABB SPASI23 – Analog Input Module for Harmony/INFI 90 Process Signal Acquisition

• Warranty: 365 days

• Delivery time: 1 week for in‑stock items; no more than one month at the latest

• Payment: 50% advance payment; full payment prior to delivery

• Express options: FedEx, UPS, DHL

• Harmony/INFI 90 compatibility: Designed to fit existing ABB DCS racks for straightforward replacement or expansion.

• Analog input handling: Supports common industrial signal ranges (typically 4–20 mA and voltage inputs) for transmitters and field devices.

• Channel diagnostics: LED indications and onboard checks help technicians pinpoint wiring or loop issues faster.

• Noise immunity: Good common‑mode rejection and 50/60 Hz filtering help stabilize measurements in electrically noisy cabinets.

• Backplane powered: Draws power through the system backplane, keeping cabinet wiring clean and consistent.

• Service friendly: Plug‑in design with termination via TU (termination unit) simplifies hot-swap and loop maintenance in many cases.

Plants running ABB Harmony/INFI 90 often use SPASI23 units in:

• Power generation (boiler/steam balance, feedwater, emissions monitoring)

• Oil & gas (wellhead skids, separators, pipeline stations, tank farms)

• Chemicals and refining (reactor variables, utilities, blending)

• Pulp & paper (stock prep, bleaching stages, machine sections)

• Metals, cement, and water treatment where stable AI loops are critical

A maintenance lead told us their team swapped a suspect channel on an SPASI-series card in under 10 minutes during a night shift—no program rework and minimal panel disturbance. That kind of serviceability tends to pay for itself during peak production.

• Reliability: Stable conversion and filtering reduce drift and false alarms in noisy environments.

• Compatibility: Drop‑in design for Harmony/INFI 90 racks preserves existing wiring and control logic.

• Cost control: Extends life of installed DCS assets; avoids large‑scale rip‑and‑replace.

• Technical support: Assistance with module selection, loop checks, and commissioning is available on request.

• Cabinet environment: Install in a clean, ventilated enclosure; maintain ambient temperature within 0–55 °C and non‑condensing humidity.

• Wiring practices: Use shielded twisted pairs for analog loops; land shields at one end; keep power and analog wiring separated to limit interference.

• Grounding: Ensure proper cabinet and TU grounding; verify loop power supplies and fusing match channel requirements.

• Commissioning: Perform loop checks (simulate 4–20 mA), verify scaling in the controller, and confirm channel status LEDs.

• Maintenance: Periodically inspect terminals, retorque screws, clean dust with dry air, and schedule yearly calibration checks where traceability is required.

• Firmware/configuration: If applicable, maintain revision alignment across modules; keep a record of spare cards with matching revisions.

Supporting components typically used with SPASI23 include the ABB Harmony/INFI 90 I/O rack, termination units (TU) for field wiring, and standard marshalling accessories. If you’re replacing a mixed I/O bay, we can help confirm TU compatibility and channel mapping before shipment.

• Manufacturer quality systems typically aligned with ISO 9001

• CE marking and UL recognition are commonly applicable to ABB DCS modules

• RoHS compliance for electronics in many regions (varies by production lot and revision)

• Warranty: 365 days from delivery

One thing I appreciate is how the SPASI23 keeps existing plant standards intact—no surprise changes to loop conditioning or terminations. If you share your installed rack details and loop ranges, we can quickly validate the module fit and have it on a courier within a week when in stock.