ABB CI920AS 3BDH000690R1 S900 Comms Module

ABB CI920AS 3BDH000690R1 Communication Interface

Product Introduction

The ABB CI920AS (article number 3BDH000690R1) serves as a communication interface for the S900 remote I/O system. This module, also called CIPBA-Ex V2.1, connects the internal CAN bus to an external PROFIBUS DP-V1 network. You can install the S900 system directly in non-hazardous areas or in Zone 1 and Zone 2 hazardous locations. Therefore, marshalling and wiring costs drop significantly. The CI920AS variant is specifically for Zone 1 installations. Moreover, it connects intrinsically safe field devices located in Zone 0, Zone 1, or Zone 2.

Key Features and Benefits

This communication module offers several industrial advantages. First, it holds ATEX certification for Zone 1 hazardous areas. Additionally, the ABB CI920AS supports redundancy for both power and communication channels. For redundancy, you must use two CI920AS modules with identical firmware. Always check the Release Notes before setup.

Furthermore, the module enables hot configuration while the system runs. Hot swap functionality allows you to replace units without powering down. Extended diagnostics help you find faults quickly. The FDT/DTM technology gives excellent configuration and diagnostic access. Meanwhile, all components receive G3-coating for corrosive atmospheres. Auto-diagnostics simplify maintenance tasks significantly.

Technical Specifications

The 3BDH000690R1 module communicates using PROFIBUS DP-V1 (IEC 61158 standard). It supports HART over PROFIBUS DP-V1 for smart field devices. Line or media redundancy is possible through two coupling modules. Electrical isolation exists between the fieldbus and power circuits. Diagnosis, configuration, and parameterization all occur via PROFIBUS.

For signal type, this is a pure communication interface. HART capability is included. SOE (Sequence of Events) is not available. Redundancy is fully supported. Intrinsic safety is part of the design. The mechanics follow the S900 form factor.

Environmental & Certification Data

The ABB CI920AS carries the CE mark for European compliance. For hazardous locations, it qualifies for ATEX Zone 1. Moreover, the module meets ISA-S71.04 G3 standards for corrosive atmospheres. Climatic operating conditions allow relative humidity up to 93% ±3% at 40°C. The maximum ambient temperature ranges from -20°C to 60°C.

RoHS compliance follows DIRECTIVE/2011/65/EU (EN 50581:2012). WEEE compliance adheres to DIRECTIVE/2012/19/EU. The WEEE category is Small Equipment (no external dimension exceeds 50 cm). Therefore, disposal follows small electronic waste rules.

Mechanical Dimensions

The CI920AS has a very slim profile. Width measures only 20 mm (0.79 inches). Depth is 104 mm (4.09 inches). Height is also 104 mm (4.09 inches). The module weighs just 0.14 kg (0.31 lbs.). This compact size allows high-density mounting in S900 racks.

Frequently Asked Questions (FAQ)

1. Can I replace the CI920AS while the system is running?
Yes, the ABB CI920AS supports hot swap functionality. You can exchange the module during operation. There is no need to interrupt primary voltage for power supply units.

2. What happens if I use two CI920AS modules with different firmware?
Redundancy will not work correctly. For PROFIBUS DP-V1 redundancy, both CI920AS modules must have identical firmware. Always read the Release Notes before installation.

3. Does this module work with HART devices?
Yes, the 3BDH000690R1 supports HART over PROFIBUS DP-V1. This allows you to access smart field device data through the same communication channel.

4. What is the maximum ambient temperature for safe operation?
The CI920AS operates reliably from -20°C to 60°C. Relative humidity can reach 93% ±3% at 40°C. The G3 coating protects against corrosive atmospheres.

5. Can I connect field devices from Zone 0 to this CI920AS?
Yes, the ABB CI920AS is designed for intrinsically safe field devices. It connects devices installed in Zone 2, Zone 1, or even Zone 0 when configured correctly. Always follow ATEX installation rules.