1. Overview

2. Specifications

• Model: JANCD-FC191-1 (standard), JANCD-FC191-2 (high-density)

• Manufacturer: Yaskawa Electric

• Part Numbers:

  • FC191-1: DF9200847-A0 / B0

  • FC191-2: DF9200847-C0

• System Compatibility: YASNAC I80, I80M (B-series CNC)

• Board Type: SMEM2 (System Memory 2) PCB

• Memory Capacity:

  • FC191-1: 32MB RAM + 64MB Flash

  • FC191-2: 64MB RAM + 128MB Flash (high capacity)

• Memory Type: CMOS RAM (battery-backed) + Flash (non-volatile)

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

• Backplane: JANCD-FC006 (I80 main backplane)

• Power: 24VDC ±10%, ~3A max (from backplane)

• Operating Temp: 0°C to +50°C

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

• Weight: ~0.28–0.30 kg (0.6–0.63 lbs)

3. Key Functions

• High-Density Program Storage: Stores 32MB/64MB RAM + 64MB/128MB Flash for large CNC part programs

• Extended Tool & Work Data: Holds massive tool offset tables, work coordinates, and macro variables

• System Backup/Restore: Enables full CNC system parameter and program backup/restore

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

• Flash Memory: Permanent storage for system software and critical data

• Self-Diagnosis: On-board diagnostics for quick fault detection

• LED Status: Power, battery, and activity LEDs for monitoring

4. Compatibility

• Backplane: JANCD-FC006 (I80 standard)

• CNC Controllers: YASNAC I80, I80M (B-series)

• Required Boards: I80 CPU board (JANCD-FC002) + Power Supply

• Related Boards:

  • JANCD-FC190: Legacy Memory Card Board (256kB/512kB)

  • JANCD-FC120: Expanded RAM Board

  • JANCD-FC100B/C: HIF Communication Board

5. Common Subtypes

• JANCD-FC191-1: 32MB RAM + 64MB Flash (standard, most common)

• JANCD-FC191-2: 64MB RAM + 128MB Flash (high-density, for large programs)