1. General Information

2. Specifications

2.1 Electrical Ratings

• Logic Supply Voltage: 24 VDC ±10%

• Logic Supply Current: 0.4 A typical

• Encoder Supply: ±5 VDC differential

• Power Consumption: ≤10 W

• Insulation Resistance: ≥1 MΩ at 500 VDC

2.2 Environmental Conditions

• Operating Temperature: 0°C to +40°C

• Storage Temperature: -10°C to +60°C

• Humidity: 5% to 80% RH, non-condensing

• Vibration Resistance: 0.5 G maximum (10–500 Hz)

• Altitude: Up to 1,000 m above sea level

2.3 Control Performance

• Number of Controlled Axes: 2 (independent or synchronous)

• Command Input Modes: Pulse train (up to 500 kHz), analog ±10 V

• Encoder Interface: Incremental (A/B/Z differential), absolute multi-turn serial

• Control Loop Update Rates: Position loop 1 kHz, velocity loop 2 kHz, current loop 16 kHz

• Positioning Accuracy: ±1 pulse resolution

3. System Compatibility

• Compatible Controllers: YASNAC XRC, ERC series robot cabinets

• Compatible CPU Boards: JANCD-CP04B, JANCD-CP03B

• Compatible Servo Motors: Motoman SGMRV, SGMAV, SGMGH series AC servo motors

• Application: Material handling, welding, assembly, and general automation robots

4. Connectors and Signals

4.1 CN1, CN2 (Encoder Interfaces, Axis 1 and 2)

4.2 CN3 (24 VDC Power Input)

4.3 CN4 (System Bus Interface)

4.4 CN5 (Safety and I/O Signals)

5. LED Indicators

• PWR: Green, lit when 24 VDC power is normal

• RUN: Green, blinking during normal servo operation

• ALM: Red, steady when servo alarm occurs

• ERR: Red, flashing during communication or encoder error

6. Installation Instructions

1. Power off the controller and wait at least 5 minutes for capacitors to discharge before handling the board.

2. Wear anti-static wristband to prevent electrostatic damage to electronic components.

3. Align the board with the designated slot in the XRC/ERC controller cabinet.

4. Secure the board with four M3 screws, tightening to 0.8–1.0 N·m torque.

5. Connect all cables (CN1–CN5) according to signal assignments, ensuring correct polarity and secure connections.

6. Restore power and verify LED indicators show normal operation (PWR on, RUN blinking).

7. Safety Features

• Hardware emergency stop compliant with safety category 3

• Overcurrent, overvoltage, and overtemperature protection

• Encoder disconnection and signal error detection

• Position deviation excess alarm

• Short-circuit protection for encoder and I/O circuits

8. Maintenance and Troubleshooting

8.1 Maintenance

• Periodically inspect connectors for tightness and corrosion

• Clean dust from board surface using dry compressed air (low pressure)

• Check LED indicators regularly for normal status

• Verify cable integrity and replace damaged cables immediately

8.2 Common Troubleshooting

• PWR LED off: Check 24 VDC power supply and CN3 connection

• ALM LED on: Inspect motor, encoder, and wiring for faults; check servo parameters

• ERR LED flashing: Verify CN4 bus connection; check CPU board operation

• RUN LED not blinking: Confirm servo enable signal and motion command input

9. Ordering Information

• Model Number: JANCD-SVO2C

• Replacement Part Number: 161541-1

• Manufacturer: Yaskawa Electric Corporation (Motoman Robotics Division)

• Country of Origin: Japan

• Warranty: 12 months under normal operating conditions

10. Warning and Caution