Yaskawa CACR-SR15SZ1SS-Y87 Digital Servo Drive
May 29, 2026

Yaskawa CACR-SR15SZ1SS-Y87 Digital Servo Drive

The CACR-SR15SZ1SS-Y87 is a classic digital AC servo drive from Yaskawa VS-800 series, designed for traditional CNC machine tools and industrial automation systems. It adopts built-in forced air cooling, with 9.9 A continuous output current and 28 A short-term peak current. Equipped with dedicated serial encoder interface and factory preloaded Y87 exclusive OEM parameters, this drive delivers stable signal transmission and optimized operating performance. It is an ideal replacement unit for maintenance and retrofitting of legacy servo devices requiring Y87 parameter matching.

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 special I/O and feedback circuits
1: Single-phase 200 VAC control power supply
S: Serial encoder signal interface for motor feedback
S: Standard base firmware
Y87: Exclusive OEM parameter group pre-configured for specific application 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 circuit
Continuous output current: 9.9 A
Peak output current: 28 A for short-time operation (max 30 seconds)
Output frequency range: 0 Hz to 400 Hz
Compatible motors: Yaskawa S-series servo motors equipped with serial encoders

Mechanical & Environmental Parameters

Cooling method: Built-in forced air cooling with internal fan
Protection class: IP20 for the whole 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 dedicated serial encoder signals
Main power interface: R, S, T for three-phase main power input; L1, L2 for control power input; U, V, W for motor power output
Regenerative interface: P, B terminals for external regenerative resistor connection
Control I/O: CN1 50-pin interface with multiple isolated digital inputs and outputs
Analog interface: ±10 V DC analog command input and real-time speed monitoring output
Communication: RS232 and RS485 interfaces supporting Modbus RTU protocol
Display unit: Seven-segment LED display for real-time operating status and alarm codes

Core Functions

Three-loop control of current, speed and position ensures high-precision and stable motion performance.
Serial encoder interface provides strong anti-interference capability and supports long-distance signal transmission.
Y87 pre-calibrated OEM parameters simplify on-site commissioning and maintain consistent operating status of matched equipment.
It supports torque, speed and position control modes to adapt to various working conditions.
Comprehensive protection against overvoltage, undervoltage, overcurrent, overheating, encoder failure and overload.
Vertical compact structure is suitable for installation inside standard industrial control cabinets.
Mature hardware and firmware ensure reliable long-term continuous operation.

Application Scenarios

Legacy CNC lathes, milling machines and machining centers using serial encoder servo systems
Special machine tools and automation production lines configured with Y87 parameter settings
Rotary positioning tables, material handling and conveying automation equipment
VS-800 series servo system maintenance, replacement and production line upgrade projects
Industrial equipment with high requirements for signal stability and anti-electromagnetic interference

Usage and Maintenance

Keep unobstructed airflow around the drive to ensure good heat dissipation.
Maintain ambient temperature within the rated range to avoid performance reduction.
Complete all wiring of power, encoder, control signals and communication lines before powering on.
Confirm the connected motor is S-series model with serial encoder for normal matching.
Check LED status, fan operation and abnormal noise during daily operation.
Clean cooling passages and tighten all terminal connections every six months.
Inspect internal components, communication status and control loop performance once a year to keep stable long-term operation.


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