ABB 3BDH000021R1Official Full Name: ABB 3BDH000021R1 CI801 Fieldbus Communication Interface M...
ABB 3BDH000021R1 CI801 Fieldbus Communication Interface Module (Freelance DCS Series) Core Function: This is a Profibus-DP communication interface module for ABB Freelance 800F distributed control systems. It acts as a bridge between the Freelance controller backplane and Profibus-DP field devices (remote I/O, drives, sensors, actuators). It handles bidirectional cyclic process data exchange, diagnostic signal transmission, and bus fault monitoring, enabling high-speed real-time communication between the DCS CPU and field-level automation equipment. It supports redundant bus operation for critical industrial process reliability. 2) Front housing view Core Function: This is a Profibus-DP communication interface module for ABB Freelance 800F distributed control syste
Product Description
ABB 3BDH000021R1 CI801 Fieldbus Communication Interface Module (Freelance DCS Series) Core Function: This is a Profibus-DP communication interface module for ABB Freelance 800F distributed control systems. It acts as a bridge between the Freelance controller backplane and Profibus-DP field devices (remote I/O, drives, sensors, actuators). It handles bidirectional cyclic process data exchange, diagnostic signal transmission, and bus fault monitoring, enabling high-speed real-time communication between the DCS CPU and field-level automation equipment. It supports redundant bus operation for critical industrial process reliability. 2) Front housing view Core Function: This is a Profibus-DP communication interface module for ABB Freelance 800F distributed control syste
Technical Specifications
| Brand | ABB |
|---|---|
| Model | 3BDH000021R1 |
| Category | Industrial Automation |
| Official Full Name | ABB 3BDH000021R1 CI801 Fieldbus Communication Interface Module (Freelance DCS Series) |
| Core Function | This is a Profibus-DP communication interface module for ABB Freelance 800F distributed control systems. It acts as a bridge between the Freelance controller backplane and Profibus-DP field devices (remote I/O, drives, sensors, actuators). It handles bidirectional cyclic process data exchange, diagnostic signal transmission, and bus fault monitoring, enabling high-speed real-time communication between the DCS CPU and field-level automation equipment. It supports redundant bus operation for critical industrial process reliability. |
| Root cause | Mismatched firmware versions between primary/secondary CI801 modules; symptom: Redundancy LED steady red, redundant switchover disabled. |
| Note | Cost-effective substitute for low-slave-count Profibus DP networks, limited to max 64 bus nodes. |
| Refurbished direct equivalent | 3BDH000021R1 reconditioned OEM module |
| Power | 4.2 W Mounting |
| Connector | 9-pin Profibus DP |
| Mounting | DIN rail |
| Speed | 9.6 kbps |
| Speed 2 | 12 Mbps |
| Redundancy | supports redundant |
| Redundancy 2 | pre-calibrated redundant |
| Origin | Germany / Original |
| Condition | New Original Factory Sealed |
| Warranty | 12 Months |
| Shipping | Global Delivery via DHL/FedEx/UPS |