JANCD-SR20
Description
1. General Description
2. Specifications
Form Factor: Standard plug-in card for Yaskawa backplane slots, green PCB with gold-edge connectors.
Power Supply: +5 V DC, ±12 V DC from backplane; typical current 1.5 A.
Processor: Dedicated 16-bit motion control DSP for fast loop closure.
Memory: 256 KB RAM (data/buffers), 128 KB ROM (firmware).
Max Axes: Up to 4 synchronized servo axes (position, speed, torque control).
Operating Temperature: 0 °C to +45 °C.
Storage Temperature: −20 °C to +60 °C.
Humidity: 5%–85% RH, non-condensing.
3. Core Functions
Multi-Axis Servo Control: Executes closed-loop position, velocity, and torque control for up to 4 axes; supports linear/circular interpolation and electronic gearing.
Trajectory Planning: Generates smooth motion profiles (trapezoidal, S-curve) and handles acceleration/deceleration for high-precision machining and robot motion.
Encoder Feedback: Reads incremental or absolute encoder signals for real-time position correction and speed monitoring.
System Bus Communication: Interfaces with the main CPU board (e.g., JANCD-SR03) via the backplane bus for command exchange and status reporting.
I/O & Safety: Manages servo enable, limit switches, emergency stop, and alarm signals; includes hardware overcurrent/overvoltage protection.
4. Compatibility
Compatible Systems: YASNAC LX / MX series CNC; Motoman ERC robot controllers.
Compatible Boards: Works with JANCD-SR01/SR02/SR03 (CPU) and SP-series interface boards.
Incompatible: XRC, NX100, DX, YRC controllers; JANCD-SR21 and newer CPU boards.
5. Installation & Maintenance
Power Off First: Disconnect main power and wait ≥5 minutes for capacitor discharge before handling.
ESD Protection: Use an anti-static wrist strap to prevent static damage to components.
Insertion: Align with backplane slot, insert firmly, and secure screws.
Cleaning: Keep contacts free of dust/oil; clean gold edges with isopropyl alcohol during maintenance.
6. Common Troubleshooting
No Axis Motion: Check backplane power, re-seat the board, clean gold contacts.
Position Deviation: Verify encoder wiring, check parameter settings (gain, backlash), test motor/encoder.
System Communication Loss: Inspect backplane bus, re-seat adjacent boards (CPU/IO).
Get a Quote