1. Basic Product Information

• Brand & Model: Yaskawa Electric, JANCD‑CG31 (JANCD‑CG31‑1, JANCDCG31)

• OEM Part Number: DF8203626‑C0 (alternate: S1J544‑5Y‑4‑1)

• Product Type: CNC Main Graphics Control Board / Display Processor Module

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

• Backplane: Mounts on JZNC‑RK22 backplane

• Connectors: CNA, CNB, CN47, CN49 (for bus/display/IO)

• Clock: 64 MHz quartz oscillator

• Origin: Japan

• Weight: Approx. 1.0 kg (2.2 lb) / 4 lb (shipping)

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

2. Core Functions & Technical Features

Primary Functions

• Main Graphics Processing: Dedicated CPU for CNC UI rendering, coordinate path visualization, machining trajectory preview, and real‑time status display (higher performance than CG23/CG24/CG26/CG27).

• Display Control: Drives CNC operator panel displays, supports high‑resolution graphics and multi‑window operation.

• System Bus Master: Manages communication between main CPU, servo drives, I/O modules, and operator panels via internal CNC bus.

• Fault Diagnosis: Built‑in self‑diagnosis, alarm output, and status monitoring for the graphics subsystem.

Key Technical Characteristics

• High‑performance dedicated graphics architecture for legacy CNC systems.

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

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

• Direct plug‑and‑play replacement for legacy CG‑series graphics boards.

• Stable performance for long‑term CNC system operation.

3. Typical Applications

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

• Industrial automation equipment requiring high‑performance CNC graphics control.

• Retrofit and maintenance of aging Yaskawa CNC systems (direct replacement for CG23/CG24/CG26/CG27).

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; fully seat CNA/CNB/CN47/CN49 connectors.

• Thermal Management: Maintain adequate ventilation; avoid mounting near high‑heat components.

5. Availability & Support

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

• Warranty: Typically 90–365 days (24 months for refurbished units).

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