1. Basic Product Information

• Brand & Model: Yaskawa Electric, JANCD‑CG27 (JANCDCG27)

• Part Number: DF8202777‑B1 (Rev B1)

• Product Type: CNC Sub‑Memory Board / Graphic Expansion Module

• Compatible Systems: YASNAC M‑II, XRC, PC NC, LX3 CNC platforms

• Backplane Compatibility: Mounts on JZNC‑RK22 backplane

• Origin: Japan

• Weight: Approx. 1.5 kg (3.3 lb)

• Status: Discontinued (available as new/refurbished industrial spare)

2. Core Functions & Technical Features

Primary Functions

• Sub‑Memory Expansion: Provides dedicated RAM/ROM for CNC program storage, motion data buffering, and system parameter backup.

• Graphic Processing Support: Assists main CPU with CNC UI rendering, machining path visualization, and real‑time display control (upgraded from CG26).

• Internal Bus Communication: Connects to main CPU, operator panels, servo drives, and I/O modules via CNR sockets and internal CNC bus.

• Fault Diagnosis: Supports self‑diagnosis, alarm output, and status monitoring for memory/graphics subsystem.

Key Technical Characteristics

• High‑integration industrial‑grade design for harsh factory environments (dust, vibration, temperature variation).

• Built‑in protection: overcurrent, overvoltage, undervoltage, and thermal protection.

• Plug‑and‑play replacement for legacy CG‑series boards (CG23/CG24/CG26).

• Stable performance for legacy CNC system retrofitting and maintenance.

3. Typical Applications

• Legacy YASNAC CNC machine tools (milling, lathe, grinding, etc.).

• Industrial automation equipment requiring legacy CNC memory/graphics expansion.

• Retrofit and maintenance of aging Yaskawa CNC systems (direct replacement for CG26).

4. Safety & Installation Notes

• Power Safety: Disconnect main power before installation/removal; wait ≥5 minutes for residual voltage discharge.

• Grounding: Ensure proper system grounding (≤100 Ω) for EMC and safety.

• ESD Protection: Use anti‑static wrist straps and mats during handling to prevent component damage.

• Mounting: Securely install on JZNC‑RK22 backplane; ensure CNR connectors are fully seated.

5. Availability & Support

• Condition: New, refurbished, or used (industrial spare parts).

• Warranty: Typically 90–365 days from industrial suppliers.

• Support: Limited manufacturer support; third‑party repair and refurbishment services available.