CACR-SR03TZ6SS-Y41 is a factory-locked OEM customized AC servo drive of Yaskawa classic CACR-SR series with rated power 0.3kW. It is exclusively developed to cooperate with YASNAC VS-800 CNC system and vintage Toyoda machine tools, matching USAREM / USAGED 300W servo motors equipped with 15-bit absolute rotary encoders. Original production has been discontinued, and this unit is only circulated globally as replacement spare part for overhaul and maintenance of aging CNC equipment. Compared with standard CACR-SR03TZ6SS, the suffix Y41 represents extra dedicated OEM fixed firmware tailored for specific machine configuration.

CACR is the unified series code of Yaskawa AC SERVOPACK servo amplifier. SR stands for multi-control platform supporting speed, position and torque three working modes via internal parameter setting. 03 refers to rated output power of 0.3kW. TZ means customized mainboard designed with ±10VDC analog command input for VS-800 CNC under AC200V voltage class. Digit 6 denotes built-in dedicated decoding circuit for 15-bit absolute encoder rather than incremental encoder circuit. SS indicates customized terminal layout and hardware circuit different from SF/SM standard versions. Y41 is special OEM firmware mark, all core servo parameters are pre-calibrated and locked at factory for designated machine application.

Main power input is three-phase AC200V~230V, 50/60Hz with voltage tolerance +10%/-15%, and control power uses independent single-phase AC200V~230V power supply. Rated continuous output current is 3.0Arms and instantaneous peak overload current is 8.5Arms to satisfy high dynamic acceleration and deceleration load requirements. CN1 connector receives ±10VDC analog speed and position command from VS-800 CNC controller; CN2 feedback interface only supports 15-bit serial absolute encoder and is incompatible with conventional incremental pulse encoders. The drive adopts natural air cooling with IP20 protection grade and must be installed inside control cabinet. Operating ambient temperature ranges from 0℃ to 55℃, storage temperature ranges from -20℃ to 85℃, working humidity ≤80%RH without condensation, and installation altitude is limited below 1000 meters above sea level.

All gain values and electronic gear ratio parameters under Y41 customized program are factory locked. Arbitrary parameter adjustment will cause positioning drift, origin loss or unexpected motor runaway. Complete protective functions include overcurrent, overvoltage, undervoltage, overheat, encoder disconnection, overload and regenerative circuit malfunction protection to ensure reliable long-term operation. Compact rack-type structure facilitates quick installation and on-site spare replacement during equipment repair. The absolute encoder configuration retains machine zero point after power cut, removing repeated homing operation at power-on and improving processing stability. Due to unique Y41 fixed parameter setting and SS special wiring definition, it cannot be directly replaced by TZ6SM/TZ6SF non-Y suffix models without modification.

Mainly applied for feed axis replacement and breakdown maintenance of old Toyoda CNC lathes and small machining centers configured with YASNAC VS-800 CNC system; also suitable for precision servo modification of small customized automation equipment requiring power-off zero memory function.