CI920AB ABB Communication Interface Module PROFIBUS DP-V1

Product Overview

• ABB CI920AB Communication Interface (3BDH000691R1) connects S900 I/O systems to a PROFIBUS DP‑V1 network. It links the internal CAN bus to fieldbus, enabling redundant and hazardous area installations (Zone 2). The module supports HART over PROFIBUS and features hot swap, hot configuration, and extended diagnostics.
• Built for remote S900 I/O in non‑hazardous areas or directly in Zone 1/2. It reduces marshalling and wiring costs by placing I/O in the field.
• The interface is error‑tolerant and easy to service. Integrated disconnectors allow module replacement without interrupting primary power.

Technical Specifications

• Brand & model – ABB / CI920AB (3BDH000691R1)
• Communication protocol – PROFIBUS DP‑V1 (IEC 61158)
• Redundancy – Power & communication; use two CI920AB with identical firmware (see Release Notes)
• Intrinsic safety – Yes, for field devices in Zone 2, 1, or 0
• HART support – Yes (HART over PROFIBUS DP‑V1)
• Galvanic isolation – Between fieldbus and power
• Ambient temperature – -20 °C … +60 °C
• Humidity – Max 93 % ±3 % at 40 °C
• Corrosion protection – ISA‑S71.04 G3 coating
• Dimensions (HxWxD) – 104 x 20 x 104 mm (4.09 x 0.79 x 4.09 in)
• Weight – 0.13 kg (0.29 lb)

Model Number Structure & Suffixes

• CI920 – Base communication interface for PROFIBUS DP
• ├─ A – Firmware variant V2.0 (legacy, not for redundancy)
• └─ B – Firmware variant V2.1 (CIPBA‑B) – supports PROFIBUS DP‑V1 redundancy, HART, hot swap
•    └─ 3BDH000691R1 – Order code for CI920AB (V2.1)

Note: For redundant systems you must use two CI920AB modules with identical V2.1 firmware.

Installation & Mounting

• Install in Zone 2 hazardous areas (ATEX certified).
• Part of S900 type B mechanics for field mounting.
• Accepts intrinsically safe field devices from Zone 2, 1, or 0.
• Supports line or media redundancy using two coupling modules.

Configuration & Diagnostics

• Hot Configuration in Run – change parameters without stopping the system.
• Hot Swap – replace modules during operation.
• Extended diagnostic via PROFIBUS DP‑V1 and FDT/DTM tools.
• Auto‑diagnostics simplify maintenance and reduce downtime.

Compatibility & Integration

• Works with S900 I/O remote system (PROFIBUS DP standard).
• For redundant setups: only pair CI920AB V2.1 (CIPBA‑B) with same firmware.
• HART devices communicate transparently over PROFIBUS.

Certifications & Compliance

• ATEX Zone 2 – II 3G Ex nA IIC T4 Gc
• CE marked – meets EU directives
• RoHS compliant (2011/65/EU)
• WEEE compliant (2012/19/EU) – small equipment category

Package Contents & Warranty

• 1 x ABB CI920AB communication interface
• Product documentation (downloadable)
• 12‑month warranty against manufacturing defects

Shipping & Delivery

• Expedited shipping via FedEx, UPS, or DHL – choose at checkout.
• Fully tracked, insured global delivery.

Typical Applications

• Oil & gas platforms – remote I/O in Zone 2 areas.
• Chemical plants – connect intrinsically safe sensors.
• Process automation – PROFIBUS DP‑V1 networks with HART devices.
• Redundant control systems in harsh industrial environments.

Diagnostic Capabilities

• Real‑time module status via PROFIBUS DP‑V1.
• FDT/DTM provides detailed channel‑level diagnostics.
• Internal CAN bus monitoring and error logging.
• Power and communication isolation status.

Frequently Asked Questions

• Q: Can I use CI920AB in Zone 1 directly?
  A: No, the module is certified for Zone 2. For Zone 1 you need an S900 variant with higher protection.
• Q: How do I achieve redundancy with this interface?
  A: Install two CI920AB units with identical firmware V2.1 and connect them to a redundant PROFIBUS line. Follow the coupling module guidelines.
• Q: Does it support HART pass‑through?
  A: Yes, it transports HART data over PROFIBUS DP‑V1 using the standard channel.
• Q: What is the difference between CI920 and CI920AB?
  A: CI920AB (V2.1) is the latest revision with full PROFIBUS DP‑V1 redundancy support and improved diagnostics. Always use AB versions for new projects.
• Q: Can I replace a module while the system is running?
  A: Yes – hot swap is supported. Use the integrated disconnection mechanism to avoid interrupting power.

Selection Guide – Which CI920AB is right?

• ✔ Choose CI920AB V2.1 if you need PROFIBUS DP‑V1 redundancy and HART.
• ✔ For non‑redundant systems, the same module works – just use one unit.
• ✔ Verify your S900 backplane supports the type B mechanics.
• ✔ Ensure ambient conditions stay within -20 °C … +60 °C and G3 corrosive atmosphere.
• ✔ For firmware updates or pairing, always check the Release Notes from ABB.

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