The 6637447A 5BE M68KMEM 9007-99 is a legacy memory and control processing module designed for ABB’s specialized industrial automation platforms. Based on the Motorola 68000 (M68K) processor architecture, this module serves as a localized controller and memory storage unit, facilitating the execution of control logic and the retention of system configuration data in older generation ABB subracks.
Technical Specifications and Parameters
The hardware characteristics for the 6637447A 5BE M68KMEM are outlined below:
Product Datasheet
-
Processing Core: Utilizes the robust M68K architecture, known for its stability in real-time industrial multitasking environments.
-
Dual Functionality: Combines control processing capabilities with dedicated memory banks for storing runtime variables and user-defined logic.
-
Data Retention: Engineered with specialized memory components designed to maintain system parameters even during power fluctuations.
-
Backplane Integration: Communicates directly with other I/O and communication modules through a high-speed parallel bus.
-
Legacy Compatibility: Specifically intended for maintenance and repair of aging industrial control cabinets where modern modules are physically or logically incompatible.
Country of Origin
Origin: Germany / USA (ABB Automation)
Technical Description
The 6637447A 5BE M68KMEM module acts as a localized “intelligence” unit within the system rack. The M68K processor executes the control instructions stored in its onboard memory, managing the flow of data between peripheral sensors and the central system coordinator.
The 5BE and 9007-99 suffixes indicate the specific hardware revision and firmware mapping used for this board. In typical applications, this module is responsible for high-speed calculation tasks that require dedicated memory access, ensuring that the main system processor is not overloaded by localized control loops. The use of gold-plated backplane contacts ensures long-term signal integrity, which is vital for the low-voltage communication required by the M68K bus.
Common Questions & Answers (Q&A)
Q: Can I replace a 6637447A with a newer version of the M68KMEM module? A: Replacement must be done with caution. While some M68KMEM boards are similar, the specific part number (6637447A) and revision (5BE) are often tied to unique firmware or memory addressing. Always verify the jumpers and EPROM versions on the original board.
Q: How do I know if the memory on this module has failed? A: System errors such as “Checksum Error” or “Memory Parity Fault” during the startup sequence usually indicate a failure in the onboard RAM or EPROM chips.
Q: Does this board contain a battery for memory backup? A: Some revisions of the M68KMEM boards utilize a “Snap-hat” battery or an onboard lithium cell to preserve CMOS/RAM data. If the module loses its configuration after a power cycle, the battery may need replacement.
Q: Is this module compatible with modern ABB Symphony Plus systems? A: No. This is a legacy component primarily used in older 19-inch rack systems. Integration into modern systems would require a bridge controller or a complete system migration.
