1. General

• Model: JANCD‑SR50‑1 (often shortened to JANCD‑SR50)

• Type: 3‑axis CNC/servo control PCB (backplane slot card)

• Manufacturer: Yaskawa Electric (YASNAC CNC)

• System: YASNAC J50 CNC (3‑axis milling/tapping applications)

• Function: Integrated system CPU + 3‑axis servo motion control + basic PLC

• Status: Obsolete / discontinued

2. Specifications (typical for J50 SR50‑1)

• Axes: 3 synchronized servo axes (position/velocity/torque control)

• Processor: 16/32‑bit motion CPU (J50 platform)

• Memory: Onboard RAM/ROM for J50 system firmware & motion programs

• Power: +5 V, ±12 V from J50 backplane

• Interfaces:

  • Servo drive bus (Yaskawa Σ‑series drives)

  • Encoder inputs (incremental/absolute)

  • Limit/home, emergency stop, machine I/O

  • Backplane system bus (J50 rack)

• Operating temp: 0 °C to 45 °C

3. Key Features

• Integrated 3‑axis control: Combines main CPU, motion control, and I/O logic on one board for J50 3‑axis machines

• CNC & servo: Supports linear/circular interpolation, cutter compensation, and S‑curve/trapezoidal acceleration

• Built‑in PLC: Handles M/S/T functions and machine logic

• J50 ecosystem: Works with J50 backplane, I/O boards, and operator panels

• Hardware protection: Overcurrent, overvoltage, overheat, and watchdog alarms

4. Compatibility

• Designed for: YASNAC J50 3‑axis CNC systems

• Not compatible: LX/MX (SR20/SR21), ERC robot, XRC/NX100/DX/YRC controllers

• Replacement: Direct replacement only within J50 series (JANCD‑SR50‑1 is standard)

5. English Summary