Products Description
ABB NF93A-2 HESG440280R2 Networked Field Controller Module in stock
ABB NF93A-2 with part number HESG440280R2 is a networked field controller module for ABB Advant OCS distributed control system. It serves as a decentralized field control node, executing local control logic, collecting field I/O signals and performing data interaction with the main controller.
This module adopts dual redundant communication ports design, supporting stable bus communication in power plant environments. The PCB is conformal coated for anti-moisture and anti-interference. It is discontinued legacy spare, widely used for maintenance and replacement of old ABB DCS and turbine control cabinets.
Main Specifications
| No. | Item | Parameter |
|---|---|---|
| 1 | Brand | ABB |
| 2 | Model | NF93A-2 |
| 3 | Part Number | HESG440280R2 |
| 4 | Module Type | Networked Field Controller |
| 5 | Applicable System | ABB Advant OCS DCS / Turbine Control System |
| 6 | Communication Port | Dual redundant communication ports |
| 7 | PCB Protection | Conformal coating |
| 8 | Mounting | Rack mounted |
| 9 | Operating Temperature | -20℃ ~ +70℃ |
| 10 | Status | Discontinued legacy controller spare part |
Core Functions
| No. | Function Description |
|---|---|
| 1 | Act as distributed field control node to run local PID and sequence control logic independently. |
| 2 | Collect and process analog & digital signals from field transmitters and switches. |
| 3 | Dual redundant ports realize reliable data exchange between field node and main DCS controller. |
| 4 | Built-in self-diagnostic function to monitor module health and report fault alarms. |
| 5 | Conformal coated PCB provides stable operation under dusty and humid industrial conditions. |
Application Scenarios
| No. | Application |
|---|---|
| 1 | Power plant steam turbine and generator excitation Advant OCS distributed control system |
| 2 | Oil & gas processing plant distributed field control and interlock protection system |
| 3 | Heavy industry process control, decentralized local control node for large DCS system |
| 4 | Legacy ABB Advant OCS system spare replacement and cabinet maintenance |
FAQ
| No. | Question & Answer |
|---|---|
| 1 | Q: What is ABB NF93A-2 HESG440280R2? A: It is networked field controller for ABB Advant OCS DCS, used as decentralized field control node for process control. |
| 2 | Q: What is the advantage of dual communication ports? A: Dual redundant ports avoid single point failure and guarantee continuous data transmission. |
| 3 | Q: Is this module available for new projects? A: It is discontinued, only used as spare parts for maintenance of old ABB DCS systems. |
