Yaskawa CACR-SR15SZ1SS-Y125 Digital Servo Drive
May 29, 2026

Yaskawa CACR-SR15SZ1SS-Y125 Digital Servo Drive

The CACR-SR15SZ1SS-Y125 is a legacy digital AC servo drive of VS-800 series for industrial CNC and automation control systems. It adopts built-in forced air cooling, with 9.9 A continuous current and 28 A short-term peak current. It is equipped with serial encoder interface and Y125 dedicated OEM parameter configuration, suitable for single-axis and multi-axis automation systems requiring stable servo performance and customized operating parameters.

Description

Model Definition

CACR: AC servo drive (SERVOPACK) product family
SR: VS-800 series for integrated speed and position control
15: 1.5 kW rated output power
S: Matched with Yaskawa S-series servo motors
Z: Customized hardware for dedicated I/O and feedback circuits
1: Single-phase 200 VAC control power supply
S: Serial encoder signal interface
S: Standard base firmware
Y125: Preloaded OEM parameter set for specific industrial equipment

Technical Specifications

Electrical Parameters

Main power supply: 3-phase 200–230 V AC, tolerance -15% to +10%, 50/60 Hz
Control power supply: 1-phase 200–230 V AC, tolerance -15% to +10%, 50/60 Hz
DC bus voltage: Internal integrated DC bus design
Continuous output current: 9.9 A
Peak output current: 28 A for short-time operation (max 30 s)
Output frequency range: 0 Hz to 400 Hz
Compatible motors: Yaskawa S-series servo motors with serial encoders

Mechanical & Environmental Parameters

Cooling method: Built-in forced air cooling with internal fan
Protection class: IP20 for overall unit
Operating temperature: 0 °C to +55 °C
Storage temperature: -20 °C to +85 °C
Maximum installation altitude: 1000 m, 1% performance derating per 100 m above 1000 m
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: Approximately 5.5 kg

Interface and Communication Configuration

Motor feedback: CN2 9-pin interface supporting Yaskawa serial encoder signals
Main power interface: R, S, T for main power; L1, L2 for control power; U, V, W for motor output
Regenerative interface: P, B terminals for external regenerative resistor connection
Control I/O: CN1 50-pin interface with multi-channel isolated digital inputs and outputs
Analog interface: ±10 V DC analog command input and monitoring output
Communication: RS232 and RS485 interfaces supporting Modbus RTU protocol
Display unit: Seven-segment LED display for operating status and alarm codes

Core Functions

Current, speed and position three-loop control realizes high-precision and stable motion control.
Serial encoder interface provides strong anti-interference ability and long-distance signal transmission.
Y125 pre-configured OEM parameters simplify on-site commissioning and parameter tuning.
Multiple control modes including speed, torque and position adapt to diverse working demands.
Comprehensive protection against overvoltage, undervoltage, overcurrent, overheating, encoder fault and overload.
Compact vertical structure fits standard industrial control cabinet installation.
Stable base firmware ensures long-term continuous operation in harsh industrial environments.

Application Scenarios

Legacy CNC lathes, milling machines and machining centers with serial encoder servo systems
Special-purpose machine tools requiring Y125 customized parameter settings
Rotary tables, material handling and general industrial automation equipment
Production line renovation and replacement projects for VS-800 series servo systems
Automation equipment with strict requirements on signal stability and anti-interference performance

Usage and Maintenance

Reserve sufficient clearance around the drive to ensure smooth airflow and heat dissipation.
Keep ambient temperature within the rated range to avoid performance attenuation.
Complete power circuit, encoder circuit and control signal wiring strictly before power-on.
Verify motor type and encoder specification to match the drive configuration.
Inspect LED status, fan operation and running sound during daily operation.
Clean air ducts and cooling components, and fasten terminal connections every six months.
Check internal capacitors, fan performance and communication status once a year to maintain operational stability.


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