Yaskawa CACR-SR15BB1BM – AC Servopack Drive for Legacy Motion Systems and Reliable Retrofits

The Yaskawa CACR-SR15BB1BM is part of Yaskawa’s classic CACR-SR Servopack family, widely used on legacy equipment where stable analog control and pulse-positioning are still required. From my experience, this model is typically paired with Yaskawa 200 V-class AC servo motors and keeps older packaging lines, printing machines, and general automation cells running without forcing a full control platform overhaul. You might notice that it’s built for straightforward integration—analog speed/torque command, pulse train position input, and standard encoder feedback—so it tends to drop into existing panels with minimal rework.

Company’s Order Placement Process and Guarantees

• Warranty: 365 days
• Delivery: In-stock items ship in about 1 week; no more than one month at the latest
• Payment: 50% advance payment; full payment before delivery
• Express options: FedEx, UPS, DHL

Key Features

• Analog and pulse command modes: Accepts 0–10 V analog (speed/torque) and pulse-train inputs (CW/CCW or A/B), which makes it friendly for PLCs and older CNCs.
• Incremental encoder feedback: Designed for standard Yaskawa AC servo motors with TTL encoder feedback; tuning is handled via front-panel potentiometers and DIP switches.
• Stable control loop: The CACR-SR platform is known for dependable speed and position stability in many cases, even on machines with long duty cycles.
• Simple panel integration: Panel/cabinet mount with straightforward I/O terminals; typically no fieldbus required.
• Designed for 200 V-class systems: Usually applied on 200–230 VAC servo setups common in Asia, EU, and North America.
• Serviceable for long life: Easy access to terminals and trimmers; routine cleaning and capacitor health checks extend operating life.

Technical Specifications

Application Fields

This model shows up a lot in legacy systems where reliability and like-for-like replacement matter more than adding a modern fieldbus. Typical use cases include:

• Packaging machinery (form-fill-seal, cartoners, indexing conveyors)
• Printing and labeling lines needing precise speed/registration control
• Pick-and-place, light assembly fixtures, and feeders
• Winders/unwinders in film, foil, or paper handling
• General-purpose retrofits where the original controller outputs analog or pulse commands

One thing I appreciate is how it avoids forcing a controls redesign. A packaging OEM told us they swapped a failed older Servopack for this CACR-SR unit and were able to keep the original PLC logic, wiring scheme, and encoder without chasing new part numbers.

Compatible Components & Accessories

• Yaskawa AC servomotors (200 V-class): US-/U-series motors with incremental encoders pair well with CACR-SR drives.
• Encoder and power cables: Use shielded motor power and encoder cables to minimize noise; keep motor and feedback routes separated.
• Regenerative resistor (if required): External braking resistor may be used for rapid deceleration or high-inertia loads.
• EMC/line accessories: Line reactor and EMC filter are recommended in many cases to reduce harmonics and improve immunity.

Advantages & Value

• Drop-in compatibility: Keeps legacy analog/pulse motion architectures intact and reduces commissioning risk.
• Reliable operation: The CACR-SR line has a reputation for durable performance in 24/7 environments.
• Cost-effective retrofit path: Avoids replacing motors, PLC I/O cards, and encoder wiring—saves time and budget.
• Straightforward support: Setup is practical—no complex software; adjustments by potentiometer and DIP settings.

Installation & Maintenance

• Cabinet environment: Mount vertically in a ventilated cabinet. Provide clearance for airflow; avoid dust/oil mist exposure where possible.
• Power and grounding: Use a dedicated 200–230 VAC feed with proper protective devices. Ground the drive and motor per Yaskawa guidelines; bond cabinet doors to eliminate noise pickup.
• Wiring practices: Separate motor power and encoder cables. Use shielded cables and terminate shields at the drive end. Keep pulse/analog command lines short.
• Tuning and setup: Set command mode (analog/pulse) via DIP switches. Adjust speed/position loop gains using the trimmers; verify with a low-inertia test before full-load runs.
• Routine maintenance: Inspect fans/filters (if fitted), clean dust, check terminal tightness, and evaluate electrolytic capacitors on older units. Firmware is not typically field-updated on this series.
• Safety: Discharge time applies after power-off; confirm DC bus is safe before servicing. Use a braking resistor if application demands frequent fast stops.

Quality & Certifications

• Manufacturer quality: Yaskawa industrial-grade Servopack
• Certifications: Typically CE and UL for industrial control (model-year dependent); documentation available on request
• Warranty: 365 days (repair/replace policy subject to evaluation)

If you’re replacing an existing CACR-SR or migrating from a similar analog/pulse servo, this CACR-SR15BB1BM seems to be one of the safer choices to maintain machine behavior with minimal engineering time. Share a photo of your nameplate and motor model, and we can validate compatibility before you place the order.