ABB CI626A | MasterBus 300 / Advant Fieldbus 100 Interface Board

Description

Key Technical Specifications

Product Introduction

The ABB CI626A 3BSE005029R1 is a legacy communication module used in ABB System 800xA, AC 400, and related Advant platforms. It belongs to the MasterBus 300 / Advant Fieldbus 100 communication family, which was widely used to connect controllers, drives, and remote devices in process automation systems.

Unlike standard S800 I/O modules such as AI, AO, DI, or DO cards, the CI626A handles bus-level communication rather than direct field signal acquisition. In practice, it helps manage data exchange between the controller and devices on MasterBus 300 or Advant Fieldbus 100, including ABB drives and distributed I/O stations. This makes it more comparable to a communication interface board than to a discrete I/O module.

Because CI626A modules are legacy products, replacements are typically sourced through surplus or refurbished channels. Before installation, the module revision, firmware, slot assignment, and bus configuration should be verified against the existing System 800xA or AC 400 hardware documentation.

ABB CI626A 3BSE005029R1

QA/QC Transparency SOP

1. Intake & Origin Verification
   Confirm model CI626A and order code 3BSE005029R1. Photograph the nameplate, PCB revision, connectors, and rack label.
2. Visual & Mechanical Inspection
   Inspect the module housing, backplane connector, LEDs, and bus interface for corrosion, bent pins, or physical damage.
3. Slot & Firmware Check
   Verify the allowed slot position, firmware version, and bus configuration against the System 800xA / AC 400 hardware manual.
4. Communication Test
   Install the module in a compatible rack. Verify power-up status, LED indicators, bus presence, and communication with the controller or connected devices.
5. Final QC & Packaging
   Record firmware version, hardware revision, and test results. Protect connectors and pack with anti-static and mechanical protection.

Field Engineer Gotchas

• Communication module, not DI/AI
  Risk: Treating as a standard digital or analog I/O card.
  Solution: Confirm it is a MasterBus 300 / Advant Fieldbus communication module before replacement.
  Warning: Installing it in a wrong slot or expecting I/O channels will cause commissioning failure.
• Order code confusion
  Risk: Mixing 3BSE005029R1 with 3BSE005023R1 or other CI626 variants.
  Solution: Match the exact order code, revision, and firmware to the existing system.
  Warning: Different revisions may have different firmware, bus roles, or slot restrictions.
• Legacy platform compatibility
  Risk: Assuming the module fits AC 800M S800 I/O racks.
  Solution: belongs to the older AC 400 / System 800xA communication module family, not the S800 I/O family.
  Warning: Physical fit does not guarantee functional compatibility.
• Bus configuration dependency
  Risk: Replacing the module without restoring bus addresses, node IDs, or firmware settings.
  Solution: Back up the controller configuration and bus parameters before replacement.
  Warning: A new module without correct configuration may appear online but fail to communicate with drives or remote stations.
• Drive communication impact
  Risk: Replacing the module during production without confirming drive communication paths.
  Solution: Verify MasterBus 300 / Advant Fieldbus communication with each connected device after replacement.
  Warning: A missing or misconfigured bus administrator can affect multiple drives or remote I/O stations.

ABB CI626A 3BSE005029R1

Application Scenarios

• System 800xA communication module replacement
  During a maintenance outage, a failed is replaced. The slot, firmware, and bus configuration are verified before returning the controller to service.
• AC 400 drive communication troubleshooting
  An older AC 400 system reports intermittent communication faults with ACS drives. The module is inspected, reseated, and tested to confirm MasterBus 300 communication integrity.
• Legacy spare provisioning
  A plant running an older ABB DCS stocks a verified spare. The hardware revision, firmware, and slot assignment are documented to avoid mismatch during emergency replacement.
• Migration assessment
  During a System 800xA migration review, the is identified as a legacy communication module. The engineering team confirms whether it can be retained or must be replaced by a newer communication interface.

FAQ

It is an ABB communication module used in System 800xA / AC 400 platforms, typically associated with MasterBus 300 / Advant Fieldbus 100 communication management.

Is this a DI or AI module?
No. is a communication interface / bus administrator module, not a standard digital or analog I/O card.

Can it be used in AC 800M S800 I/O racks?
Not directly. belongs to the older AC 400 / System 800xA communication module family. AC 800M local I/O uses S800 modules such as AI, AO, DI, DO, and CI854/CI858 communication interfaces.

What systems does it support?
It is typically used in ABB System 800xA, AC 400, and related Advant platforms that use MasterBus 300 or Advant Fieldbus 100.

Is it still supported by ABB?
is generally considered a legacy module. Availability is mainly through surplus or refurbished channels. Confirm current OEM support and compatibility directly with ABB or an authorized service provider.

What should I check before replacement?
Verify the exact order code 3BSE005029R1, hardware revision, firmware version, allowed slot position, and bus configuration. Back up the controller and bus parameters before removing the failed module.