Product Specification – CG31-24 (JANCD-CG31/24)

1. General Information

• Manufacturer: Yaskawa Electric Corporation

• Full Part Number: JANCD-CG31/24 (commonly abbreviated as CG31-24)

• Alternative P/N: DF8203626-C0, S1J544-5Y-4-1

• Product Type: CNC Control Graphics / Axis Control PCB Module

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

• Product Form: Printed Circuit Board (PCB)

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

2. Product Overview

3. Model Number Decoding

• JAN: Yaskawa Yasnac CNC series prefix

• CD: Circuit Board (Control Board) designation

• CG: Control Graphics / Axis Control function

• 31: Board hardware sequence / revision code

• 24: Special configuration / performance variant

• DF8203626-C0: Internal manufacturing / revision code

4. Technical Specifications

4.1 Functional Parameters

• Primary Function: CNC graphics display control, multi-axis interpolation, servo command generation

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

• Clock Speed: 64 MHz high-speed processor

• Display Output: Analog CRT/LCD video signal (via CN47/CN49)

• Bus Interface: Dual backplane connectors (CNA, CNB)

• Axis Support: Manages up to 4–8 CNC axis control loops

• Data Processing: Real-time G-code interpretation, path planning, motion profiling

4.2 Electrical Characteristics

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

• Power Consumption: Approx. 7–9 W

• Logic Level: TTL compatible (5V)

• Connectors:

  • CNA, CNB: Backplane system bus

  • CN47, CN49: CRT/LCD display & video signals

  • CN1–CN3: Auxiliary I/O, axis command, status feedback

4.3 Physical & Environmental Data

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

• Mounting: Backplane slot mounting (JZNC-RK22 rack)

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

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

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

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

• Weight: Approx. 0.40 kg

4.4 Key Features

• High-speed 64 MHz graphics/control processor

• Real-time CNC path interpolation & multi-axis coordination

• Integrated CRT/LCD video display controller

• Direct backplane integration with JZNC-RK22 systems

• Factory-calibrated for Yasnac CNC compatibility

• Industrial-grade noise immunity & signal isolation

• Plug-and-play replacement for legacy systems

• Critical for restoring visual interface & motion control

5. Typical Applications

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

• i80 / i100 series Yaskawa CNC controls

• JZNC-RK22-based industrial automation systems

• Hitachi Seiki HT20SII & similar legacy CNC machines

• Replacement of faulty graphics/axis control boards

6. Compatibility & Replacement Notes

• Direct Replacement: Must use identical JANCD-CG31/24 (DF8203626-C0)

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

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

• Configuration: No user adjustment needed; factory-configured

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

• Warranty: Typically 3–12 months for refurbished/replacement units