1. General Information

• Manufacturer: Yaskawa Electric Corporation

• Part Number: CACR-SR20BB1AF-Y303

• Product Type: Digital AC Servo Drive (SERVOPACK)

• Series: CACR-SR (VS-800) Legacy Industrial Series

• Rated Output Power: 2.0 kW

• Voltage Class: 200 VAC Three-Phase

• Protection Class: IP20

• Mounting Style: Rack plug-in module

• Product Status: Discontinued; OEM-customized for Yasnac CNC systems

2. Product Overview

3. Model Number Decoding

• CACR: AC Servo SERVOPACK

• SR: Speed & position regulation series

• 20: Rated power 2.0 kW

• B: Rack plug-in module structure

• B: 200 VAC voltage class

• 1: Control circuit/interface version

• A: Control board hardware configuration

• F: Standard firmware base

• Y303: OEM custom code (Yasnac CNC-specific, locked parameters)

4. Technical Specifications

4.1 Electrical Parameters

• Main Input: 3-phase 200–230 VAC, ±15%, 50/60 Hz

• Control Input: Single-phase 200–230 VAC, ±15%, 50/60 Hz

• Rated Output Current: 11.7 A

• Peak Output Current: 28 A (short-time overload)

• Control Method: IGBT sine-wave PWM

4.2 Control Performance

• Control Modes: Position, Speed, Torque

• Speed Range: 1:3000

• Speed Accuracy:

  • Load variation: ±0.01%

  • Temperature variation: ±0.5%

• Response Bandwidth: Up to 400 Hz

• Command Inputs:

  • Speed/Torque: Analog ±10 VDC

  • Position: Differential A/B/Z pulse

• Custom: Y303 parameters/I/O factory-locked

4.3 Encoder Feedback

• Type: Incremental optical encoder

• Signal: A/B/Z differential

• Compatibility: Yaskawa 2.0 kW 200V incremental motors

4.4 Protection & Diagnostics

• Overcurrent / Overvoltage / Undervoltage

• Thermal overload / Overtemperature

• Motor stall / Locked rotor

• Encoder fault / Emergency stop

• LED/7-segment fault code display

4.5 Environmental Conditions

• Operating Temp: 0°C ~ +60°C

• Storage Temp: -20°C ~ +85°C

• Humidity: 5–80% RH (non-condensing)

• Vibration: 0.5 g, 10–60 Hz

• Cooling: Forced air

• Max Altitude: 1000 m

4.6 Interface

• CN1: Control I/O, analog command, enable, alarms

• CN2: Motor encoder feedback

• Main Terminals: R/S/T (input), U/V/W (motor output)

• Indicators: Power, status, fault codes

5. Key Features

• 2.0 kW precision servo drive for CNC

• Three control modes (position/speed/torque)

• BB1AF hardware + Y303 OEM customization

• Factory-locked parameters for Yasnac compatibility

• Rack-mount modular design (easy install/replace)

• Full protection suite for drive/motor safety

• Industrial ruggedness for continuous operation

6. Typical Applications

• Yasnac CNC lathes/milling machines/machining centers

• OEM-specified automation lines

• Legacy CNC maintenance/replacement

• Precision positioning/assembly systems

7. Compatibility & Replacement Notes

• Matched Motor: Yaskawa 2.0 kW 200V incremental encoder servo motors

• System Compatibility: Only for Yasnac CNC with Y303 spec

• Replacement Rule: Must replace with identical CACR-SR20BB1AF-Y303

  • Not interchangeable with standard BB1AF or other Y-versions

• Parameter Setting: Do not modify factory-locked parameters (risk of machine failure)