1. General Description

2. Specifications

• Model: JANCD‑MM05

• Manufacturer: Yaskawa Electric

• Type: Non‑volatile program and parameter memory expansion board

• Storage Media: High‑capacity EPROM/Flash array with permanent data retention without power

• Storage Capacity: Larger than JANCD‑MM02/MM03, enabling storage of extensive CNC programs, robot job programs, multi‑axis parameters, I/O configurations, tool offsets, system logs, and backup data

• Core Functions: Stores system firmware, user applications, motion parameters, I/O assignments, tool compensation, and fault logs; supports system boot, data backup and restore, and offline program migration between compatible controllers

• Hardware Interface: Proprietary parallel‑bus edge connector for direct insertion into the controller backplane slot

• Power Supply: 5 VDC from the controller backplane; low power consumption, no external supply required

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

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

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

• Mounting: Standard 3U slot installation, secured by two screws for vibration resistance

• Weight: Approximately 0.6 kg

• Compatibility: YASNAC J50/i60/i70 CNC series, Motoman XRC/MRC robot controllers; not compatible with DX series or newer systems

• Product Status: Discontinued; available only as maintenance spare parts

• Reliability: Equipped with anti‑static and surge protection circuits for long‑term industrial operation

3. Installation and Replacement

1. Power Off and Lockout: Shut down the controller and disconnect all AC and DC power sources to avoid electric shock or equipment damage.

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

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

4. Secure Board: Fasten the board with two mounting screws to prevent vibration‑induced loosening.

5. Power On and Recognition: Reconnect power; the system automatically detects and initializes the memory board.

6. Load Data: After recognition, load system software or restore backups via the controller menu.

4. Backup and Restore

• Backup: Use the teach pendant (robot systems) or CNC operation menu to save programs, parameters, and logs to JANCD‑MM05.

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

• Best Practice: Maintain redundant backups—one on‑board and one on external USB storage—to prevent data loss.

5. Safety and Handling Precautions

• ESD Protection: Always wear a grounded anti‑static wrist strap when handling the board to prevent static damage.

• No Hot Plugging: Do not insert or remove the board while power is on; this may damage the board or controller.

• Environmental Care: Avoid exposure to static, moisture, dust, and physical impact. Store in a dry, clean environment when not in use.

• No Unauthorized Modification: Do not open, modify, or repair the board; tampering voids warranty and may cause failure.

• Ventilation: Keep controller ventilation areas unobstructed. Clean dust annually to ensure proper heat dissipation.

6. Compatibility Statement

7. Difference from JANCD‑MM02

• JANCD‑MM02: Standard capacity, intended for small‑to‑medium user programs and basic parameter sets.

• JANCD‑MM05: High‑capacity variant, supporting larger programs, expanded parameter storage, and longer‑term data logging; pin‑compatible and directly interchangeable with MM02 for easy upgrade or replacement.