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MM01C-02

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MM01C-02
June 02, 2026

MM01C-02

Full part number: JANCD-MM01C-02, Yaskawa YASNAC MX2/MX3 system memory expansion board specially used for Matsuura MC-760VX vertical machining center. It works cooperatively with MM20 main CPU board and MM01C-01 basic memory board inside the control cabinet, matching existing panel boards MCP02B-1, MEW01-1, MEW02-1, MORI-04 and servo boards XSU02 / XC001B. Original production is discontinued; only tested used and refurbished spare boards are available for maintenance replacement.

Description

1. Basic Information

Full part number: JANCD-MM01C-02, OEM code DF8100494, Yaskawa original extended memory PCB exclusively for YASNAC MX2/MX3 CNC control system (Matsuura MC-760VX machining center matching unit). It is used together with base memory board MM01C-01 and MM20 main CPU board inside control cabinet, compatible with existing panel accessories: MCP02B-1, MEW01-1, MEW02-1. Original manufacturing has been discontinued; only surplus, used or fully tested refurbished spare boards are available for field maintenance replacement.

2. Core Functions

  1. Extended storage module to expand CNC memory capacity, storing extra user NC machining programs, workpiece coordinate offsets and tool compensation data beyond the storage limit of standard MM01C-01 base memory board.

  2. Communicates with MM20 main CPU via cabinet backplane bus during machine runtime for real-time data reading and writing.

  3. Equipped with built-in 3.6V lithium backup battery to retain all saved parameters and part programs after main power shutdown.

3. Electrical & Installation Specifications

  • Rated operating input: DC 5V from cabinet internal system power supply

  • Operating ambient temperature: 0℃ ~ +50℃; storage: -20℃ ~ +70℃, relative humidity 10%~85% non-condensing

  • Installation form: slot plug-in type, inserted vertically into dedicated backplane slot adjacent to MM01C-01 inside CNC electrical cabinet

  • Backup power: onboard replaceable 3.6V primary lithium battery for off-power data preservation

4. Common Failure Manifestations

  1. NC programs or tool parameters disappear randomly after power off/on, mainly caused by exhausted onboard backup battery.

  2. System triggers memory abnormal startup alarm, fails to load machining programs normally after power-up.

  3. Unstable workpiece dimension deviation in long-cycle automatic processing resulting from poor gold finger contact or damaged internal memory chips.

5. Model Distinction

  • JANCD-MM01C-02: CNC extended memory board for MX2/MX3 system, paired with MM01C-01; cannot be substituted with JANCU-series robot control memory boards.

  • MM01C-01 = basic memory board; MM01C-02 = expansion memory board, both can be mounted simultaneously on one control cabinet.

6. Replacement & Safety Rules

  1. Complete full backup of all machine parameters and stored NC programs before cutting off machine three-phase AC main power.

  2. Wait minimum 15 minutes after power cut for residual cabinet voltage discharge before board disassembly.

  3. Align board pin direction precisely during installation; never force plug-in to avoid bent backplane pins.

  4. Restore backed-up data after installation, power on and verify full program storage and calling function.

  5. Hot plugging under powered cabinet status is strictly forbidden to prevent permanent burnout of CPU and peripheral circuits.


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