Model Definition

• CACR: Yaskawa SERVOPACK AC servo drive family

• SR: VS-800 series (analog speed/position control)

• 20: 2.0 kW rated output power

• B: Three-phase 200–230 VAC main power

• B: Standard hardware revision (industrial grade)

• 1: Single-phase 200–230 VAC control power

• A: Analog command interface (±10 VDC)

• M: Absolute encoder interface (serial feedback)

• Y135: Preconfigured OEM parameters for Yasnac CNC

Technical Specifications

Electrical Parameters

• Main power: 3-phase 200–230 VAC (-15% / +10%), 50/60 Hz

• Control power: 1-phase 200–230 VAC (-15% / +10%), 50/60 Hz

• Continuous output current: 18.8 A

• Peak output current: 45 A (short-term)

• Output frequency: 0–400 Hz

• Power dissipation: ~150 W

• Compatible motors: Yaskawa S-series (absolute encoder)

Mechanical & Environmental Parameters

• Cooling method: Built-in forced-air cooling (internal fan)

• Protection class: IP20 (entire unit)

• Operating temperature: 0 °C to +55 °C

• Storage temperature: -20 °C to +85 °C

• Max. altitude: 1000 m (1% derating / 100 m above)

• Vibration resistance: 0.5 g (10–60 Hz); 0.2 g (60–200 Hz)

• Dimensions (H×W×D): 380 mm × 150 mm × 200 mm

• Weight: ~6.0 kg

Interface & Communication

• Motor feedback: CN2 (absolute serial encoder)

• Power terminals: R/S/T (main); L1/L2 (control); U/V/W (motor)

• Regenerative: P/B (external regenerative resistor)

• Control I/O: CN1 50-pin (isolated DI/DO for CNC logic)

• Analog: ±10 VDC speed/torque command; speed monitor output

• Communication: RS232 (for parameter setup via Yaskawa software)

• Display: 7-segment LED (status/alarm codes for CNC diagnostics)

Core Functions

• Three-loop control: Current/speed/position loops optimized for Yasnac CNC.

• Y135 CNC tuning: Factory pre-optimized for Yasnac systems, plug-and-play.

• Absolute encoder support: No battery backup needed; retains position on power-off.

• Analog command priority: Native ±10 V interface for legacy CNC compatibility.

• Full protection: Overvoltage/undervoltage/overcurrent/overheating/encoder fault.

• Multiple control modes: Torque, speed, position for CNC milling/turning.

• Vertical compact design: Fits standard CNC cabinets; easy maintenance.

Application Scenarios

• Yasnac CNC machine tools (lathes, mills, machining centers) with absolute encoders

• Retrofits of legacy VS-800 series systems requiring Y135 CNC parameters

• High-precision analog-controlled automation with absolute position feedback

• Multi-axis CNC lines needing stable serial encoder communication

• Industrial machinery prioritizing battery-free absolute positioning

Usage and Maintenance

• Ensure cabinet airflow; keep ambient ≤45 °C to avoid performance drop.

• Complete power, absolute encoder, analog command, and I/O wiring before power-on.

• Verify motor absolute encoder specs match drive configuration.

• Clean heat sinks and air paths every 6 months; check terminal tightness.

• Calibrate control loops, encoder feedback, and analog offset annually.