Products Description
ABB MC91 HESG440588R4 HESG112714/B System Control Board Module in stock
ABB MC91 HESG440588R4 HESG112714/B is a rack-mounted system control board for ABB legacy DCS and power control systems. It executes core logic processing, handles backplane bus data communication and realizes signal interaction between the controller and field I/O modules.
This board is built with robust industrial circuit design and equipped with status diagnostic LEDs. It belongs to discontinued legacy spare parts, widely applied for maintenance replacement of old power and petrochemical distributed control systems.
Main Specifications
| No. | Item | Parameter |
|---|---|---|
| 1 | Brand | ABB |
| 2 | Model | MC91, HESG440588R4, HESG112714/B |
| 3 | Module Type | System Control Board Module |
| 4 | Installation | Rack mount, backplane bus connection |
| 5 | Function Feature | Logic processing & backplane bus communication |
| 6 | Operating Temperature | 0 ~ +60°C |
| 7 | Status | Discontinued legacy spare part |
Core Functions
| No. | Function Description |
|---|---|
| 1 | Execute core control logic and process field collected data for DCS rack |
| 2 | Realize high-speed data transmission via rack backplane bus |
| 3 | Coordinate signal exchange between controller and peripheral I/O modules |
| 4 | Onboard LED indicators for power, running status and fault diagnosis |
| 5 | Built-in watchdog circuit to ensure stable operation under industrial interference |
Application Scenarios
| No. | Application |
|---|---|
| 1 | ABB legacy DCS distributed control rack system |
| 2 | Thermal power plant auxiliary control and monitoring system |
| 3 | Petrochemical and chemical process automation control |
| 4 | Old industrial control system spare replacement and retrofit |
FAQ
| No. | Question & Answer |
|---|---|
| 1 | Q: What is ABB MC91? A: MC91 is ABB system control board with part codes HESG440588R4 and HESG112714/B, used for legacy DCS rack logic processing and bus communication. |
| 2 | Q: What are HESG440588R4 and HESG112714/B? A: They are ABB internal part numbers of MC91 control board, all refer to the same hardware unit. |
| 3 | Q: Can this board be used in new ABB DCS systems? A: It is designed for legacy racks and not compatible with the latest ABB DCS platforms. |
