1. Overview

2. Specifications

• Model: JANCD-FC190-2 (FC1902 = FC190-2)

• Manufacturer: Yaskawa Electric

• Part Number: DF8203848-C0 (Rev C0 is common)

• System Compatibility: YASNAC I80, I80M

• Board Type: Memory Card / Mass Storage PCB

• Memory Capacity: 512kB (Non-volatile CMOS RAM)

• Battery: On-board lithium battery (data retention: 5–10 years)

• Backplane: JANCD-FC006 (I80 main backplane)

• Power: 5VDC ±5%, ~180mA (from backplane)

• Operating Temp: 0°C to +55°C

• Dimensions: 267 mm × 152 mm (10.5" × 6")

• Weight: ~0.4 kg

3. Key Functions

• 512kB Program Storage: Stores very large CNC part programs (512kB capacity)

• Extended Tool & Work Data: Holds extensive tool offsets, work coordinates, and macro variables

• System Backup/Restore: Enables fast backup and recovery of CNC parameters

• Battery-Backed Retention: Preserves data without external power for years

• High-Speed Access: Direct bus connection to CPU for fast program loading

• LED Status: On-board LEDs for power, battery, and activity monitoring

4. Compatibility

• Backplane: JANCD-FC006 (I80 standard)

• CNC Controllers: YASNAC I80, I80M

• Required Boards: I80 CPU board (JANCD-FC002) + RAM boards (FC120 series)

• Related Boards:

  • JANCD-FC100B/C: HIF Communication Board

  • JANCD-1021: Main I/O Board

  • JANCD-FC110: Slave I/O Board

  • JANCD-FC120: Expanded RAM Board

5. Common Misspellings & Subtypes

• JANCD-FC1902: Incorrect; correct is JANCD-FC190-2

• JANCD-FC190-1: 256kB (standard capacity)

• JANCD-FC190-2: 512kB (high capacity, for large programs)

6. Notes

• EOL Status: Discontinued by Yaskawa; supply limited to used/refurbished

• Battery Replacement: Replace on-board lithium battery every 5–10 years to avoid data loss

• Configuration: Requires CNC parameter setup to enable 512kB storage

• Identification: Labeled “MEMORY CARD”; silkscreen “JANCD-FC190-2” + Rev C0