I. Product Overview

Model: JANCD-CG26 (including sub-models CG26-1, CG26-H)

Category: CNC memory board / storage expansion PCB

Applicable to: YASNAC 2000G/3000G/G5 numerical control systems (commonly used in Hitachi machinery and others)

II. Core Functions

Program Storage: Extends CNC part programs, macro programs, and tool compensation storage capacity

Data Cache: High-speed cache for processing programs and parameters during system operation, improving response speed

Parameter Backup: Stores critical data such as system configuration, axis parameters, I/O mapping, etc.

III. Technical Parameters

Structure: Full-size long card (approximately 330×140mm), gold finger slots

Storage: Large-capacity DRAM/ROM array (early models approximately 1–4MB)

Interface: Special system bus (matched with 2000G/3000G/G5 backplane)

Power Supply: Backplane DC5V/±12V, power consumption approximately 15W

Temperature: Working 0–55℃, storage -20–70℃

Weight: Approximately 1.2kg

IV. Differences in Common Models

JANCD-CG26: Standard version, basic storage capacity

JANCD-CG26-1: 1MB capacity version

JANCD-CG26-H: High capacity / industrial grade, with coated anti-interference

V. Installation and Maintenance

Installation: Insert vertically into the dedicated long slot beside the CPU, tighten the locking screws; leave 50mm space for heat dissipation

Maintenance: Regularly blow dust off the board; check for oxidation / burn damage of gold fingers; back up programs and parameters

VI. Fault Phenomena

Program loss / unable to save: Memory chip damage, poor contact of gold fingers

Power-on message "MEMORY ERROR": Board damage or incompatibility

System operation sluggishness: Insufficient memory capacity, aging of chips