Yaskawa CACR-PR01AD4NR

Technical Dossier

Product Details And Specifications

YASKAWA CACR-PR Series Technical Notes

The YASKAWA CACR-PR series represents a foundational line of analog servo amplifiers deployed across global heavy industry, including petrochemical refineries, nuclear power auxiliary systems, steel rolling mills, and continuous-process chemical plants. Designed to interface with YASKAWA's MP-series and older YASNAC motion controllers, CACR-PR units deliver closed-loop velocity and torque control for AC servomotors in environments where long-term parts availability is a critical operational requirement. Installed base across Asia-Pacific, Europe, and the Americas remains substantial, making lifecycle support a primary concern for plant maintenance engineers.

The Evolution of CACR-PR Architecture

The CACR-PR series was introduced as part of YASKAWA's transition from DC servo technology to brushless AC servo systems during the late 1980s and through the 1990s. Early variants used analog command interfaces (±10 V velocity reference) and resolver-based feedback, establishing a hardware architecture that remained consistent across multiple sub-series revisions. The "PR" designation denotes the analog-input, resolver-feedback amplifier class, distinguishing it from later digital-interface series such as SGDH (SERVOPACK) and SGDV (Sigma-5), which introduced MECHATROLINK-II/III fieldbus communication.

CACR-PR Full Catalog & Functionalities (SKU List)

The following SKUs represent verified models within the YASKAWA CACR-PR servo amplifier series, organized by rated output capacity and variant classification:

CACR-PR01AD4NR: 100W analog servo amplifier, ±10V velocity cmd, resolver feedback, single-phase 200VAC input.
CACR-PR02AD4NR: 200W analog servo amplifier, resolver feedback, single-phase 200VAC, standard I/O connector.
CACR-PR03AD4NR: 300W analog servo amplifier, resolver feedback, single-phase 200VAC, DIN-rail mountable.
CACR-PR05AD4NR: 500W analog servo amplifier, resolver feedback, single-phase 200VAC, enhanced braking resistor circuit.
CACR-PR10AD4NR: 1.0kW analog servo amplifier, resolver feedback, three-phase 200VAC input, standard chassis.
CACR-PR15AD4NR: 1.5kW analog servo amplifier, resolver feedback, three-phase 200VAC, integrated dynamic brake.
CACR-PR20AD4NR: 2.0kW analog servo amplifier, resolver feedback, three-phase 200VAC, high-inertia load rated.
CACR-PR30AD4NR: 3.0kW analog servo amplifier, resolver feedback, three-phase 200VAC, extended current rating.
CACR-PR50AD4NR: 5.0kW analog servo amplifier, resolver feedback, three-phase 200VAC, heavy-duty industrial chassis.
CACR-PR01AD3NR: 100W analog servo amplifier, 100VAC single-phase input variant, resolver feedback.
CACR-PR02AD3NR: 200W analog servo amplifier, 100VAC single-phase input variant, resolver feedback.
CACR-PR05AD3NR: 500W analog servo amplifier, 100VAC single-phase input variant, resolver feedback.
CACR-PR10AD3NR: 1.0kW analog servo amplifier, 100VAC three-phase input variant, resolver feedback.
CACR-PR01AD4SR: 100W analog servo amplifier, 200VAC, encoder feedback variant (incremental encoder interface).
CACR-PR05AD4SR: 500W analog servo amplifier, 200VAC, encoder feedback variant, standard I/O.
CACR-PR10AD4SR: 1.0kW analog servo amplifier, 200VAC, encoder feedback variant, three-phase input.
CACR-PR20AD4SR: 2.0kW analog servo amplifier, 200VAC, encoder feedback variant, high-current output stage.

Quality Control for the CACR-PR Range

CACR-PR servo amplifiers incorporate multi-layer PCB assemblies with proprietary YASKAWA gate driver circuits, resolver signal conditioning boards, and backplane bus connectors that require specialized test procedures. DriveKNMS applies the following verification steps to all CACR-PR units processed through its facility: (1) Visual inspection of power stage components, capacitor condition assessment, and connector integrity check. (2) Dielectric withstand test on AC input terminals per IEC 61800-5-1 requirements. (3) Functional energization under controlled load using matched YASKAWA servomotor test bench, verifying velocity loop response, torque limit function, and fault output relay operation. (4) Resolver signal integrity verification: amplitude, phase, and frequency response within YASKAWA specification. (5) Final parameter verification and reset to factory default state. Each unit is issued a test record documenting pass/fail criteria and technician sign-off prior to shipment.