Product Specification – CG26-H (JANCD-CG26-H)
May 13, 2026

Product Specification – CG26-H (JANCD-CG26-H)

JANCD-CG26-H (commonly abbreviated as CG26-H) is a critical memory & control PCB for Yaskawa Yasnac CNC systems. It functions as a system memory module, storing CNC parameters, ladder logic programs, and axis control data, while managing system communication and data backup. This board mounts on the JZNC-RK22 backplane and features battery-backed memory (BR-2/3A 3V battery via CN1) to retain critical system data during power loss. It is a core component for maintaining system configuration and operational stability in legacy Yaskawa CNC machine tools.

Description

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Product Specification – CG26-H (JANCD-CG26-H)

1. General Information

  • Manufacturer: Yaskawa Electric Corporation

  • Full Part Number: JANCD-CG26-H

  • Alternative P/N: DF8202775-C0

  • Product Type: CNC System Memory / Control Board (PCB Module)

  • Series: Yasnac CNC System (JZNC-RK22, M-64, M-65, i80, i100 Series)

  • Product Form: Printed Circuit Board

  • Product Status: Discontinued legacy OEM component, exclusive for CNC maintenance & replacement

2. Product Overview

JANCD-CG26-H (commonly abbreviated as CG26-H) is a critical memory & control PCB for Yaskawa Yasnac CNC systems. It functions as a system memory module, storing CNC parameters, ladder logic programs, and axis control data, while managing system communication and data backup.
This board mounts on the JZNC-RK22 backplane and features battery-backed memory (BR-2/3A 3V battery via CN1) to retain critical system data during power loss. It is a core component for maintaining system configuration and operational stability in legacy Yaskawa CNC machine tools.

3. Model Number Decoding

  • JAN: Yaskawa Yasnac CNC prefix

  • CD: Circuit Board designation

  • CG: Memory / Control Board function

  • 26: Board sequence / hardware revision code

  • H: High-performance / Special configuration variant

  • DF8202775-C0: Internal manufacturing / revision code

4. Technical Specifications

4.1 Functional Parameters

  • Primary Function: CNC system memory, parameter storage, ladder logic execution

  • Compatible Systems: Yasnac M-64, M-65, i80, i100, JZNC-RK22-based CNC controls

  • Memory Type: Battery-backed static RAM (SRAM)

  • Battery: BR-2/3A 3V lithium battery (CN1 connector)

  • Communication: Dual bus connectors (CNA, CNB) for backplane communication

  • Features: Non-volatile data retention, system parameter management, fault log storage

4.2 Electrical Characteristics

  • Supply Voltage: 5 VDC ±5% (from CNC backplane)

  • Power Consumption: Approx. 5 W

  • Logic Level: TTL compatible (5V)

  • Connectors:

    • CNA, CNB: Backplane bus communication

    • CN1: Battery backup connection

    • CN2-CN4: Auxiliary I/O & system signaling

4.3 Physical & Environmental Data

  • Dimensions: Standard PCB format (approx. 300mm × 150mm × 20mm)

  • Mounting: Card-edge / backplane slot mounting

  • Operating Temperature: 0°C ~ +45°C

  • Storage Temperature: -20°C ~ +65°C

  • Relative Humidity: 5% ~ 85% RH, non-condensing

  • Vibration Resistance: 0.5 g, 10Hz ~ 60Hz

  • Weight: Approx. 0.4–1.0 kg

4.4 Key Features

  • Battery-backed SRAM for permanent parameter/program storage

  • Direct backplane integration with JZNC-RK22 systems

  • Factory-calibrated for Yasnac CNC compatibility

  • High-reliability industrial-grade components

  • Complete system data backup & retention capability

  • Essential for restoring CNC system functionality

  • Plug-and-play replacement (with battery backup)

5. Typical Applications

  • Yasnac M-64 / M-65 CNC lathes & machining centers

  • i80 / i100 series Yaskawa CNC controls

  • JZNC-RK22-based industrial automation systems

  • Legacy CNC equipment maintenance & repair

  • Replacement of failed memory/control boards

6. Compatibility & Replacement Notes

  • Direct Replacement: Must use identical JANCD-CG26-H (DF8202775-C0)

  • Compatibility: Exclusive to Yasnac CNC systems; not interchangeable with other boards

  • Installation: Power off system; install in designated JZNC-RK22 backplane slot

  • Battery: Replace BR-2/3A 3V battery during replacement to preserve data

  • Caution: ESD-sensitive; proper static protection required during handling


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