CACR-PR03AA4AH belongs to rack-mounted AC servo drive of YASKAWA classic CACR-PR series. It is an early digital positioning servo unit with DIN rail installation, designed for 200V power class and rated power of 0.3kW. It matches YASKAWA USA series servo motors fitted with incremental encoders, mainly applied as replacement spare parts for legacy automation equipment and production line renovation.

This 0.3kW servo drive is powered by three-phase AC200V input and equipped with integrated dual closed-loop control of speed and position. When paired with CPCC-PP100 positioning module, it can build up an independent point positioning control system without additional external PLC controller. The product features an integrated layout of power circuit and control circuit, with digital display and status indicator lamps for failure checking. Multiple built-in protection functions secure the whole driving system against abnormal working conditions. It serves as original replacement spare part widely used on outdated CNC machine tools, packaging machines, textile machinery and customized automated equipment.

CACR stands for YASKAWA AC servo drive series code. PR indicates the rack-mounted type with built-in digital positioning function. The figure 03 represents rated power of 0.3kW. AA refers to three-phase AC200V power input and standard DIN rail installation specification. Digit 4 means compatibility with standard incremental encoder at 1500P/R for USA-series servo motors. AH denotes specific hardware version, terminal definition and internal protection configuration of the product.

For electrical parameters, the rated input power is three-phase AC200V to 230V with 50/60Hz frequency, rated output power reaches 0.3kW and rated output current is 3.5A. It adopts sine wave PWM vector control with dual closed-loop of speed and position, and supports incremental encoder of 1500P/R as feedback matching USAMED, USAFED and USASEM servo motors.In environmental and physical specifications, the operating ambient temperature ranges from minus 10 degrees Celsius to plus 55 degrees Celsius, while storage temperature is between minus 20 degrees Celsius and plus 60 degrees Celsius. Working humidity keeps from 20%RH to 80%RH without condensation and corrosive gas. The protection grade is IP20 for cabinet installation and it is fixed on standard DIN35 mounting rail. The allowable installation altitude is below 1000 meters.

Main power terminals include L1, L2, L3 for three-phase power input, U, V, W for motor power output and PE terminal for earthing connection. CN1 control connector consists of multi-channel digital input terminals for servo enable, fault reset and operation mode switching as well as digital output terminals for ready signal and fault alarm output, together with analog signal port accepting plus or minus 10V speed command. CN2 is exclusive encoder connector for A, B, Z phase feedback and encoder power supply.For communication, standard RS422 serial communication is available for parameter modification and equipment debugging with optional baud rate of 4800bps or 9600bps under original YASKAWA private protocol without Modbus or CANopen bus support. Additional bus connection is available via external CPCC-PP100 positioning module.

The drive realizes speed-loop and position-loop dual closed-loop control to complete point-to-point positioning with matched positioning module without external pulse controller. Two optional operation modes including speed control and fixed positioning can be switched via control terminals conveniently. Complete protection mechanisms cover over-current, over-voltage, under-voltage, overload, over-temperature, encoder disconnection and output short circuit, which triggers stop operation and corresponding fault code display once abnormality occurs. It supports automatic motor parameter tuning to optimize dynamic response and reduce low-speed speed fluctuation. Built-in self-diagnosis function shows fault codes on front digital display for quick troubleshooting, and adjustable torque limit function avoids mechanical collision caused by overload.

It is commonly used for feed axis control of traditional CNC machine tools, driving unit of food and pharmaceutical packaging equipment, transmission control of textile machinery, precision conveying mechanism of electronic and semi-conductor processing machines, and spare part replacement of obsolete imported automated production equipment.

Install the drive inside standard control cabinet away from dust, corrosive gas and direct moisture, and ensure sufficient surrounding ventilation for heat dissipation. Confirm correct wiring of power cable, control wire and encoder cable before power-on to avoid wrong connection damage. Set relevant operation parameters according to matched motor specification and actual mechanical load during initial commissioning. Cut off main power supply before daily inspection or disassembly maintenance. Regularly check terminal fastening status and clean surface dust periodically. Once fault code appears, cut off power and check corresponding circuit and mechanical parts according to displayed error information before restart operation.