Product Specification – CACR-SR15BY1SS-Y50

1. General Information

• Manufacturer: Yaskawa Electric Corporation

• Part Number: CACR-SR15BY1SS-Y50

• Product Type: Digital AC Servo Drive (SERVOPACK)

• Series: CACR-SR (VS-800 Series, BY Sub-Series, S-Series)

• Rated Output Power: 1.5 kW (1500W)

• Voltage Class: 200 VAC Three-Phase

• Protection Class: IP20

• Mounting Style: Base/Rack Mount

• Product Status: Legacy / Discontinued. OEM-customized servo drive for Yasnac CNC systems.

2. Product Overview

3. Model Number Decoding

• CACR: AC Servo SERVOPACK

• SR: Speed & Position Regulation type

• 15: Rated output power: 1.5 kW

• B: Voltage class: 200VAC

• Y: Control type: Digital control, Absolute encoder compatible

• 1: Design/Interface revision

• S: Special hardware configuration

• S: Standard industrial hardware revision

• -Y50: Custom specification code (OEM/Yasnac CNC-specific variant)

4. Technical Specifications

4.1 Electrical Ratings

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

• Control Circuit Input: Single-phase 200–230 VAC

• Rated Continuous Output Current: 10 Arms

• Peak Output Current: 30 Arms (3x rated, short-time overload)

• Control Method: IGBT PWM sine-wave modulation

4.2 Control Performance

• Primary Control Mode: Speed Control

• Secondary Control Modes: Torque Control, Position Control

• Speed Regulation Range: 1:3000

• Speed Regulation Accuracy:

  • Load variation: ±0.01% (at rated speed)

  • Temperature variation: ±0.5%

• Command Input: Analog ±10 VDC (Speed/Torque), Pulse train (Position)

4.3 Encoder Feedback

• Type: Absolute Encoder Interface

• Resolution: Compatible with standard 15-bit absolute encoders

• Signal Interface: High-speed differential line-driver

• Key Feature: Maintains absolute position data after power-off, eliminating homing routines

4.4 Protection & Diagnostic Functions

• Overcurrent, Overvoltage, Undervoltage protection

• Electronic thermal overload protection

• Overtemperature protection

• Motor stall/locked-rotor detection

• Encoder signal fault detection

• Emergency stop input & safety interlock

• LED fault code display for quick diagnostics

• Fault traceback mode (stores historical faults)

4.5 Environmental Conditions

• Operating Temperature: 0 °C ~ +45 °C

• Storage Temperature: -20 °C ~ +65 °C

• Relative Humidity: 5% ~ 85% RH, non-condensing

• Vibration Resistance: 0.5 g (10 Hz ~ 60 Hz)

• Cooling Method: Forced air cooling

• Maximum Operating Altitude: 1,000 m above sea level

4.6 Physical & Interface Characteristics

• Form Factor: Base-mounted / Rack card module

• Weight: Approx. 8.2 kg (18.0 lb)

• Connectors:

  • CN1: Control I/O (Signals, alarms, enable)

  • CN2: Motor power & Absolute encoder feedback

  • Power Terminals: R/S/T (Input), U/V/W (Output)

• Indicators: Power, Run, Fault status LEDs

5. Key Features

• Absolute Encoder Compatibility: Retains position without power, ideal for critical positioning.

• High-Precision Control: Ultra-stable low-speed operation and high dynamic response.

• Y50 Customization: Factory-set parameters and I/O logic for specific OEM/CNC systems.

• Robust S-Series Design: Industrial-grade construction for continuous, reliable operation.

• Comprehensive Protection: Full suite of safeguards for drive, motor, and machinery.

• Direct Replacement: Exact OEM specification for legacy system maintenance.

6. Typical Applications

• Yasnac CNC Machine Tools (Milling machines, Lathes, Machining Centers)

• Industrial Robotics & Precision Positioning Systems

• Material Handling & Automated Assembly Lines

• Packaging, Printing, and Textile Machinery

• Applications requiring absolute position feedback

• Legacy equipment repair, retrofitting, and spare part replacement

7. Compatibility & Replacement Notes

• Matched Motor: Yaskawa 1.5 kW 200V servomotors with absolute encoders.

• System Compatibility: Optimized for Yasnac CNC systems requiring the -Y50 variant.

• Interchangeability: Not interchangeable with standard BY-series (e.g., -SG, -SS) or incremental encoder drives. Replacement requires identical CACR-SR15BY1SS-Y50.

• Configuration: Parameters are pre-configured; adjustable via host CNC or Yaskawa setup software.