Description
Product Introduction & Engineering Value
Many AC 800M projects eventually require integration with third-party field devices rather than additional controller capacity. The ABB CI627A fills that requirement by providing a dedicated PROFIBUS DP communication interface capable of operating as either a DP master or DP slave, depending on system configuration.
Compared with the earlier CI627, the CI627A supports PROFIBUS DP-V1, allowing expanded diagnostics and acyclic communication. This makes it a preferred choice when upgrading existing 800xA installations or connecting newer intelligent field equipment without replacing the controller platform.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | ABB |
| Model | CI627A |
| Article Number | 3BSE017457R1 |
| Product Type | PROFIBUS DP Communication Interface |
| Compatible Systems | AC 800M / System 800xA |
| Communication Protocol | PROFIBUS DP-V0 / DP-V1 |
| Operating Mode | DP Master (Class 1/2) or DP Slave (software selectable) |
| Physical Interface | 1 × 9-pin D-Sub (RS-485) |
| Communication Speed | 9.6 kbps to 12 Mbps |
| Maximum Stations | Up to 126 PROFIBUS devices |
| Isolation | 2.5 kV AC between backplane and PROFIBUS interface |
| Power Supply | +5 VDC via AC 800M backplane |
| Typical Power Consumption | Less than 2 W |
| Installation | AC 800M controller rack (MB510/MB520 compatible) |
| Protection Rating | IP20 |
Field Application & The “Trench” Experience
A refinery modernization project required an existing AC 800M controller to communicate with new PROFIBUS-connected motor drives while preserving the original control strategy. The legacy installation used an older CI627 interface that offered only DP-V0 functionality, limiting diagnostic capability during commissioning.
Replacing it with a CI627A enabled DP-V1 diagnostics, allowing engineers to identify parameter mismatches directly from the engineering workstation instead of troubleshooting each field device individually. Startup was completed within the scheduled outage, and future maintenance became considerably easier thanks to improved diagnostic visibility.
Typical applications include:
- ACS880 variable frequency drive integration over PROFIBUS DP
- ET200 remote I/O communication in hybrid ABB/Siemens installations
- Intelligent valve positioner networks in refinery process units
- CI627A
- CI627A
Transparency SOP: QA & Testing
Before shipment, every is processed through a documented inspection procedure:
- Verify ABB article number 3BSE017457R1 and hardware revision.
- Inspect the RS-485 connector, PCB, and backplane contacts.
- Perform power-up verification using a compatible AC 800M controller.
- Confirm PROFIBUS communication and LED diagnostic operation.
- Inspect mechanical condition and connector retention.
- Package in anti-static protective materials with impact-resistant cushioning.
Refurbished modules undergo additional functional communication testing before release.
The Veteran’s Tech Trap Guide
⚠️ Don’t order CI627 when you need .
Although the two modules appear similar, supports PROFIBUS DP-V1 diagnostics, while the original CI627 is limited to DP-V0. Verify the exact article number before ordering replacement hardware.
⚠️ Most “module failures” are network issues.
Before replacing the interface, inspect:
- PROFIBUS termination resistors
- Cable shielding and grounding
- Baud rate consistency
- Node addressing
These account for many communication faults incorrectly attributed to the interface module.
PRO TIP:
Always save the existing Control Builder M configuration before replacing the communication module. Restoring the hardware without confirming network parameters can extend commissioning time unnecessarily.
⚠️ Verify slot location.
The is intended for the designated communication slot within the AC 800M controller assembly. Installing the module in an incorrect position will prevent the controller from recognizing the interface.
Dynamic FAQ
Q1. What communication protocol does the support?
The supports PROFIBUS DP-V0 and DP-V1, allowing communication with remote I/O, drives, intelligent instruments, and other PROFIBUS-compatible devices.
Q2. Can the operate as both a master and a slave?
Yes. The operating mode is software configurable, allowing the module to function as either a PROFIBUS DP master or slave depending on the application.
Q3. Is the backward compatible with the CI627?
Mechanically, it is compatible with the same controller platform. However, firmware compatibility and project configuration should be verified before replacing a CI627 with a , particularly in older System 800xA installations.
Q4. Are New Surplus modules genuine ABB products?
Yes. New Surplus units are unused original ABB inventory stored under controlled warehouse conditions. Every unit undergoes identity verification and visual inspection before shipment.
Q5. Which controllers are compatible with the ?
The module is designed for ABB AC 800M controllers used in System 800xA applications, including installations requiring PROFIBUS integration with remote I/O and field devices. Compatibility should always be confirmed using the controller type and software version.
Q6. Is warranty coverage available?
Yes. Both New Surplus and professionally refurbished modules are supplied with warranty coverage. Warranty duration depends on inventory condition and is specified in the quotation.
Start Chat
