1. General Description

2. Specifications

• Model: JANCD‑MM08

• Manufacturer: Yaskawa Electric

• Type: Non‑volatile program/parameter memory expansion board (without PROM)

• Storage Media: High‑density Flash array, permanent data retention without power

• Storage Capacity: The largest in MM series; supports massive CNC programs, robot jobs, multi‑axis parameters, I/O configurations, tool offsets, fault logs, and full system backups

• Core Functions: Stores system firmware, user applications, motion parameters, I/O mapping, tool compensation, and historical faults; supports system boot, data backup/restore, offline migration, and controller cloning

• Hardware Interface: Proprietary parallel‑bus edge connector for standard 3U backplane slot

• Power Supply: 5 VDC from backplane; low power, no external supply needed

• Operating Temperature: 0 °C to +55 °C

• Storage Temperature: −20 °C to +70 °C

• Humidity: 5% RH to 95% RH, non‑condensing

• Mounting: 3U slot, two screws for vibration resistance

• Weight: Approximately 1.0 kg

• Compatibility: YASNAC J50/i60/i70 CNC; Motoman XRC/MRC robots. Not compatible with DX series, i80/i90, or non‑Yaskawa systems

• Product Status: Discontinued; maintenance spare only

• Reliability: Anti‑static, surge, and over‑voltage protection; industrial‑grade durability

3. Installation and Replacement

1. Power Off: Shut down the controller and disconnect all power to avoid shock or damage.

2. Locate Slot: Use an available 3U slot in the controller rack.

3. Insert Board: Align edge connector with slot; insert firmly until fully seated.

4. Secure Board: Fasten with two mounting screws to prevent vibration loosening.

5. Power On: Reconnect power; system auto‑detects and initializes the board.

6. Load Data: After recognition, load programs/parameters or restore backups via the menu.

4. Backup and Restore

• Backup: Use CNC panel or teach pendant to save programs, parameters, offsets, and logs to MM08.

• Restore: Boot from the memory board or select “Restore from Memory Board” to recover data.

• Cloning: One‑click data cloning between identical compatible controllers.

• Best Practice: Keep redundant backups (on‑board + external USB) to prevent data loss.

5. Safety and Handling Precautions

• ESD Protection: Wear a grounded anti‑static wrist strap when handling the board.

• No Hot Plugging: Never insert/remove the board with power on; risk of permanent damage.

• Environment: Avoid static, moisture, dust, oil, and impact. Store in a dry, anti‑static bag.

• No Modification: Do not open, repair, or alter the board; tampering voids warranty.

• Ventilation: Keep controller vents clear; clean dust annually for proper heat dissipation.

6. Compatibility Statement

7. Difference from JANCD‑MM06

• JANCD‑MM06: Enhanced high‑capacity model for standard large applications.

• JANCD‑MM08: Ultimate high‑capacity variant with maximum storage, faster read/write, superior anti‑interference, and extended temperature tolerance; pin‑compatible and interchangeable with MM06 for direct upgrade.