JANCD-CG Yaskawa (YASKAWA) Graphic / Display Control Board Card (CG = Graphic)

I. Series Overview

Brand: YASKAWA (Yaskawa Electric)

Series: JANCD-CG

Type: CNC Graphic Control Board / Display CPU Card

Applicable Systems:

Yasnac J50 / M-500 / i80 series CNC controllers

Compatible with JANCD-BB50, JANCD-BB03 and other system backplanes

Core Functions: System display driver, graphic operation, CRT / LCD interface control, operation panel signal processing

II. Detailed Specifications of Representative Model (JANCD-CG20 / CG24) 1. JANCD-CG20

Part Number: DF8202624

Board Type: Standard JANCD Long Card

Weight: Approximately 0.68kg

Dimensions: Approximately 260mm × 130mm × 20mm

Power Supply: 24V DC (Backplane Power Supply)

Power Consumption: ≤ 8W

Core Chip: Special Graphics Control Processor (AMGC)

Interfaces:

CRT Display Interface (VGA / Analog RGB)

Operation Panel / Keyboard Interface

System Bus Interface (J50 Specific)

Status LEDs: PWR, RUN, ALM

Functions:

Drive Monochrome / Color CRT Displays

Display G-code, Coordinates, Parameters, Tool Path Graphics

Process Panel Buttons, Emergency Stop, Mode Switch Signals

Communicate with the Main CPU (CP50), Synchronize System Status

2. JANCD-CG24 (Enhanced Version)

Part Number: DF8203003

Clock Speed: Built-in 64MHz Crystal Oscillator

Video Memory: 512KB ~ 1MB (Expandable)

Functions:

High Resolution Graphic Display (Supports Tool Path Trajectory Preview)

Multi-window Display (Parameters + Graphics + Coordinates)

Character / Graphic Overlay, Menu Control

Compatible with New LCD Displays (Replace CRT) 

III. Hardware Characteristics

PCB Material: Industrial-grade FR-4 multilayer board, gold-plated bus contacts

Operating Temperature: 0°C ~ +45°C

Environmental Humidity: 10%–80% RH (no condensation)

Vibration Resistance: 10–55Hz, ≤4.9m/s²

Protection Grade: IP20 (installed in control cabinet)

Reliability: MTBF > 100,000 hours, industrial-level anti-interference design

IV. Typical Application Scenarios

Yasnac J50 CNC System Display Control

M-500 Series Machining Center Graphics / Interface Management

i80 Series CNC Lathe / Milling Machine Display Module

Replacement for Old ABB CNC Systems (CRT to LCD)

Signal Acquisition and Processing of Machine Tool Operation Panels

V. Relationship with the Main CPU and Backplane

Main CPU: JANCD-CP50 / CP50B (system computing)

Graphics CPU: JANCD-CGxx (display / interface)

Backplane: JANCD-BB50 (8 slots), JANCD-BB03 (14 slots)

Collaboration Mechanism:

CP50 Executes Processing Programs, Calculates Coordinates

CGxx Receives Coordinates / Parameter Data, Drives Display

CGxx Collects Panel Signals, Transmits Back to CP50 for Execution

VI. Common Faults and Diagnostics

No Display (Black Screen): CG Board Failure, 24V Power Supply Abnormality, CRT Interface Loose

Flickering / Mosaic: Graphics Memory Abnormality, Bus Contact不良， Graphics Chip Damage

No Button Response： Panel Interface Failure， CG Board I/O Circuit Damage

ALM Red Light On： CG and Main CPU Communication Failure， Bus Error

VII. Associated Models

JANCD-CG01： Simple Communication / Graphic Hybrid Board

JANCD-CG22： Medium Resolution Graphics Control Board

JANCD-CG31： ACGC120H System Main Graphics Board

JANCD-CP50： Companion Main CPU Board

JANCD-BB50： Companion 8-slot Backplane