1. General Description

2. Basic Information

• Model: JANCD‑MM14 (MM14; common revisions: MM14C, MM14D)

• Manufacturer: Yaskawa Electric (Japan)

• Type: Robot controller RAM memory board

• Compatible Controllers: Motoman XRC, ERC series

• Weight: ~0.3–0.6 kg (0.66–1.3 lbs)

• Status: Obsolete / Discontinued

3. Specifications

• Memory Type: High‑speed CMOS RAM

• Capacity: Standard 256 KB – 1 MB (revision‑dependent)

• Interface: Proprietary parallel bus (XRC/ERC backplane)

• Form Factor: 3U rack‑mount PCB

• Power: 5 VDC from backplane; 24 VDC auxiliary input

• Current Draw: ~500 mA max

• Operating Temp: 0 °C to +40 °C (non‑condensing)

• Storage Temp: −10 °C to +60 °C

• Humidity: 5%–80% RH (non‑condensing)

• Indicator: 1× red LED (power / access)

4. Key Functions

• Provides volatile RAM storage for active robot programs and runtime data.

• Works with MM13‑series ROM boards for full system memory (ROM + RAM).

• Enables larger job sizes, faster program execution, and expanded I/O buffering.

• Supports online program editing and real‑time motion data caching.

5. Compatibility Notes

• MM14 = RAM expansion; pairs with MM13 (ROM) in XRC/ERC systems.

• Revisions:

  • MM14C: DF8203076/A0, standard capacity

  • MM14D: DF8203830/C0, higher capacity, Rev C

• Not compatible with MRC, MX2, DX100, DX200, YRC1000.

6. Installation & Safety

1. Power OFF controller before insertion/removal (no hot‑swap).

2. Use ESD protection (grounded wristband).

3. Align edge connectors, insert into vacant 3U slot, tighten screws.

4. Keep away from moisture, dust, oil, and vibration.

5. Do not modify or disassemble; warranty void if opened.