FANUC A20B-2902-0194 512KB DRAM Manager Module

FANUC A20B-2902-0194 Product Overview

The FANUC A20B-2902-0194 is a plug-in PMC DRAM manager module that provides 512KB of management expansion RAM. It is used in compatible legacy FANUC CNC PMC configurations that require manager memory without a separate application-DRAM allocation on the same module.

FANUC hardware documentation identifies the A20B-2902-0194 as ADDITIONAL DRAM (MGR). This designation is important because other A20B-2902-019x modules may provide application DRAM, or a combination of manager and application memory.

Verified Manager-Memory Configuration

• Module Type: PMC DRAM manager module
• Management Expansion RAM: 512KB
• Application DRAM: Not provided by this configuration
• Memory Function: Volatile PMC working memory
• Installation: Compatible PMC or option-board socket

The A20B-2902-0194 is not a CNC program-storage SRAM module, system-software FROM module or servo-control board. Its function is specifically associated with PMC management-memory expansion.

0194 and Other 512KB Modules

The A20B-2902-0194 should not be confused with the A20B-2902-0193, which combines 512KB of manager memory with 512KB of application DRAM. It is also different from the A20B-2902-0198, which is identified as a 512KB application-DRAM module.

Although these modules belong to the same family and can look similar, the memory role encoded by the complete suffix is different. Matching capacity alone is not sufficient for replacement.

Compatibility and Revision Check

Before ordering, verify the complete A20B-2902-0194 number, printed revision, host-board number, PMC type and original socket position. Component layout and contact arrangement should also be compared with the removed module.

Remove control power before installation and use suitable ESD protection. Back up available CNC parameters, programs and PMC data before servicing the control, then follow the applicable FANUC maintenance procedure.

Tested Supply from REACO CNC

REACO CNC can supply the FANUC A20B-2902-0194 subject to current availability. The module number, revision and condition will be confirmed before shipment. Browse our FANUC CNC circuit boards and FANUC CNC and robot parts for related components.

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