Model Definition

• JANCD: Yaskawa standard prefix for CNC/robot control PCBs

• BB: Backplane / Base Board (CNC main rack)

• 50: Designation for YASNAC J50 CNC platform

• Alias: JANCDBB50, JANCD-BB50B (revised), DFxxxx (internal Yaskawa part number)

Specifications

Electrical

• Power Supply: 24 V DC ±10% (system bus power)

• Bus Interface: J50 backplane bus, multi-slot high-speed interconnect

• Onboard Fusing: For overcurrent protection of plug-in modules

• Signal Lines: CPU, servo, I/O, and communication signal routing

Mechanical & Environmental

• Dimensions (W×H×D): ~220 mm × 180 mm × 30 mm

• Weight: ~0.4–0.5 kg

• Mounting: Standard slot installation in J50 controller cabinet

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

• Humidity: 10%–80% RH, non-condensing

• Protection Class: IP20

Key Functions

• Main System Backplane: Mechanically and electrically connects all J50 controller boards (CPU, I/O, servo, network) in the main rack.

• Power Distribution: Supplies regulated 24 V DC to all plug-in modules with short-circuit protection.

• High-Speed Signal Routing: Transmits control and data signals between the main CPU and peripheral units (servo drives, I/O modules, operator panels).

• Slot Expansion: Provides multiple slots for I/O, communication, or optional axis control modules.

• System Stability: Ensures noise isolation and signal integrity for reliable CNC operation.

Applications

• YASNAC J50 CNC Systems: Machining centers, lathes, grinders, and other machine tools.

• Legacy Yaskawa CNC Retrofits: Replacement of faulty backplanes in aging J50-based production equipment.

• Industrial Automation: Precision machine control and automation lines using Yaskawa CNC.

Compatibility & Notes

• Dedicated for YASNAC J50 CNC racks; not interchangeable with JANCD-B (XRC robot) or JANCD-BB03 (NX100 robot) backplanes.

• Drop-in replacement for JANCD-BB50B (revised version) with no wiring changes required.

• Maintain cabinet ventilation (0–45 °C) to prevent overheating and extend service life.