CACR-SR05AA2AH-Y3 is an OEM-locked customized 0.5kW servo drive of Yaskawa classic CACR-SR series, specially developed for YASNAC VS-800 CNC system and legacy Japanese CNC machine tools such as Toyoda lathes. It matches 500W incremental encoder servo motors of USAREM series. Original formal production has been stopped, and this product is only circulated in the market as replacement spare part for repairing and retrofitting aging CNC equipment. The suffix Y3 stands for exclusive factory pre-solidified OEM parameters customized for specific machine model.

CACR is the fixed series designation of Yaskawa AC SERVOPACK amplifier. SR represents a universal control platform supporting speed, position and torque three control modes. 05 means rated output power of 0.5kW. AA refers to standard mainboard with ±10VDC analog command input circuit designed for VS-800 CNC under AC200V voltage grade. Digit 2 indicates internal feedback circuit tailored for 1500P/R incremental rotary encoder. AH stands for standard terminal layout of this hardware version. Y3 is dedicated OEM firmware code; all core parameters including servo gain and electronic gear ratio are preset and locked at factory without user modification permission.

Main power input is three-phase AC200V~230V, 50/60Hz with voltage fluctuation range of +10%/-15%, while control power is supplied by separate single-phase AC200V~230V. Rated continuous output current is 4.2Arms and peak transient overload current reaches 11.0Arms to satisfy dynamic acceleration and deceleration load demands. CN1 connector receives ±10VDC analog speed and position command from VS-800 CNC controller, and CN2 feedback interface is only compatible with 1500P/R incremental encoders. The servo adopts natural air cooling with IP20 protection grade and must be installed inside electrical cabinet. Operating ambient temperature ranges from 0℃ to 55℃, storage temperature is between -20℃ and 85℃, relative working humidity shall not exceed 80%RH without condensation, and maximum installation altitude is below 1000 meters above sea level.

All internal matching parameters of Y3 customized program are factory locked. Random parameter modification will easily lead to positioning deviation, motor runaway or zero point loss fault. Comprehensive built-in protection mechanisms cover overcurrent, overvoltage, undervoltage, overheat, encoder disconnection, overload and regenerative circuit abnormal protection to guarantee long-term stable running. Compact rack-mounted mechanical structure enables easy cabinet installation and rapid on-site spare replacement during equipment maintenance. Equipped with incremental encoder configuration, the machine needs to perform homing operation after each power cut, different from absolute encoder servo models. Due to unique Y3 fixed parameter setting, it cannot be directly replaced by non-Y suffix standard CACR-SR05AA2AH without parameter rewriting.

It is mainly used for feed axis replacement and fault maintenance of old Toyoda and other Japanese CNC lathes equipped with YASNAC VS-800 system, as well as servo transformation of small customized precision automation equipment with analog ±10V control and incremental encoder feedback.