ABB 086318-002 086318-501 | Memory Daughterboard for MPRC

Description

• Brand: ABB
• Full Model Number: 086318-002 / 086318-501
• System/Series Family: ABB MPRC / Smart Platform control hardware
• One-Sentence Core Function: Memory daughterboard used to provide nonvolatile RAM storage within the associated ABB controller architecture
• Top 3 Hardcore Specs: PWA Memory Daughterboard; approximately 208 mm × 120 mm × 15 mm; approximately 0.13 kg net weight
• Stock Status: New surplus / fully tested refurbished, subject to exact board revision

ABB parts data identifies 086318-002 as a BRAM Battery RAM for MPRC and lists the product description as PWA, MEMORY DAUGHTERBOARD. ABB’s parts information also shows 086318-001 as the older replaced identifier.

Module 3: Commercial-Technical Deep Dive

A failed memory board inside legacy ABB control hardware can create a very different maintenance problem from an ordinary I/O fault. The ABB 086318-002 / 086318-501 assembly is identified as a memory daughterboard, with ABB parts data associating 086318-002 with MPRC BRAM hardware. The board stores controller data in a dedicated memory assembly rather than providing field signal processing, so it should be treated as a memory subsystem replacement—not as a general-purpose I/O or communication card.

The physical specifications are useful for inventory control and cabinet documentation. ABB-linked product data lists approximately 208 mm length, 120 mm width, 15 mm height, and 0.13 kg net weight, with approximately 0.2 kg gross weight. The same data identifies 086318-001 as the older replaced product ID. A separate field listing identifies 086318-501 as a memory board marked 94V-0, with a reported weight of about 110 g. Because 086318-002 and 086318-501 may describe related or revision-specific hardware, purchasing should verify the actual PCB markings before treating the numbers as interchangeable.

ABB 086318-002 086318-501

Module 4: Compatibility & Installation Traps

Migration/Compatibility

• Replacement type: ABB memory daughterboard / BRAM memory PCA associated with MPRC control hardware.
• Firmware flash: Not normally a firmware-upgrade operation. The board provides memory hardware rather than acting as an independent firmware-bearing controller.
• Logic rewrite: Not normally required for a correctly matched replacement.
• Drop-in status: Potentially direct when the existing assembly is identified as the same board revision and part number.
• Predecessor: ABB parts data identifies 086318-001 as the replaced product ID for 086318-002.
• 086318-501 relationship: Treat 086318-501 as a distinct board marking or revision until the installed controller documentation confirms interchangeability. Current field references separately identify it as an ABB memory board.

⚠️ Field Traps (Watch Out)

1. Do not assume 086318-002 and 086318-501 are interchangeable solely because suppliers list them together.
The available references clearly identify 086318-002 as the ABB memory daughterboard, while separate listings identify 086318-501 as a memory board. Match the complete PCB marking, revision, connector arrangement, and controller BOM before installation.

2. Memory retention is the real risk.
Because ABB identifies the assembly as BRAM/battery-RAM hardware for MPRC, removing a failed or aging board can affect retained controller data. Back up application/configuration data using the approved system procedure before disturbing the memory assembly. Do not assume that replacing the physical board automatically transfers or restores every retained parameter.

3. ESD protection is mandatory.
Use an ESD-safe workstation, grounded wrist strap, and conductive packaging. Avoid contact with memory devices, component leads, and board-edge contacts.

4. Check battery condition before returning a refurbished board to service.
For a BRAM-based memory assembly, battery condition is a service concern. A board that passes a basic visual inspection may still be unsuitable for long-term service if its retention battery is depleted or aged.

Module 5: Quality Assurance SOP

Each ABB 086318-002 / 086318-501 unit should pass a controlled pre-shipment inspection sequence:

• OEM anti-counterfeit visual inspection: Verify ABB markings, full part number, board revision, PCB construction, component placement, connector geometry, and manufacturing markings.
• Part-number verification: Record the complete physical marking, including 086318-002, 086318-501, revision codes, and any additional board identifiers.
• Mechanical inspection: Check PCB edges, mounting holes, connectors, solder joints, component condition, contamination, corrosion, and evidence of unauthorized repair.
• Memory hardware inspection: Verify the BRAM/memory-device population and inspect any battery-backed retention components for leakage, swelling, corrosion, or physical damage.
• Electrical inspection: Check accessible power and ground paths for abnormal resistance or visible short-circuit damage before applying power.
• Power-on self-test (POST): Not applicable as a standalone board-level POST. When installed in a compatible ABB controller/test assembly, verify that the host system initializes normally and does not report memory-related diagnostics.
• Communication handshake verification: Not a direct board function. Validate at the controller level after installation, confirming normal controller startup, data retention behavior, and expected communication with the host system.
• Retention check: Where the test fixture and approved procedure permit, perform a controlled write/read and power-cycle retention test to verify that expected memory data remains available.
• Final QC: Photograph the part-number and revision markings, record inspection/test results, use ESD-safe packaging, and protect the PCB from mechanical shock during transport.

Module 6: CRO-Driven Buyer FAQ

1. What exactly is ABB 086318-002?

ABB parts information identifies 086318-002 as a BRAM Battery RAM for MPRC and describes it as a PWA, Memory Daughterboard. It is therefore a memory subsystem board, not an I/O module or standalone PLC CPU.

2. Is 086318-002 the same as 086318-501?

They should not be treated as automatically identical. Current references associate 086318-002 with the ABB memory daughterboard and separately identify 086318-501 as an ABB memory board. Verify the complete installed-board marking and system documentation before substitution.

3. Does replacing the board require a firmware download?

Not normally. The board is a memory daughterboard rather than an independent controller. The critical issue is preserving or restoring the controller’s required retained data and ensuring that the replacement hardware matches the installed system configuration.

4. What are the published physical specifications?

ABB-linked product information lists approximately 208 mm × 120 mm × 15 mm and 0.13 kg net weight, with approximately 0.2 kg gross weight. Use the physical unit and exact revision for final cabinet and shipping calculations.

5. What warranty and technical support are included?

Warranty duration should be stated on the quotation for the exact inventory condition supplied. Technical support should cover part-number and revision verification, memory-board inspection, test documentation, compatibility review, and replacement guidance within documented ABB system limits. Data backup, controller commissioning, and site-level safety procedures remain the responsibility of qualified personnel.