CACR-SR05AC2ER is a standard universal 0.5kW AC servo amplifier of Yaskawa classic CACR-SR series, designed to match YASNAC VS-800 CNC system for legacy Japanese CNC lathes and small machining centers. It adopts open universal firmware without OEM parameter lock; all internal parameters can be freely modified and initialized. This model is paired with USAREM-05R series 500W servo motors equipped with 1500P/R incremental encoders. Different from CACR-SR05AC1ER (1000P/R encoder version), its feedback circuit is customized for 1500P/R pulse signal.

CACR stands for Yaskawa traditional AC SERVOPACK servo drive series. SR represents triple-control platform supporting speed, position and torque with ±10VDC analog command input for VS-800 CNC. 05 indicates rated output power of 0.5kW. AC refers to C-version mainboard with exclusive AC200V analog control circuit. Digit 2 means built-in feedback circuit for 1500P/R incremental rotary encoder. E denotes incremental PG feedback specification, and R stands for hardware compatibility with USAREM-R servo motor series. No "-Y" suffix means non-locked general-purpose firmware.

Main power input: three-phase AC200V~230V, 50/60Hz with voltage tolerance +10%/-15%; independent single-phase AC200V~230V for control power.Rated continuous output current: 4.2Arms; peak overload transient current: 11.0Arms.CN1 port receives ±10VDC analog speed/position command from VS-800 controller; CN2 feedback interface only supports 1500P/R incremental encoders and does not support absolute encoders.Cooling: natural air convection; protection grade IP20 for cabinet-only installation.Ambient condition: operating temperature 0℃~55℃, storage temperature -20℃~85℃; relative humidity ≤80%RH without condensation; maximum installation altitude ≤1000m above sea level.

Universal editable firmware allows flexible parameter adjustment for motor matching and equipment refitting, which is the core difference from Y-suffix locked customized drives. Complete protection functions include overcurrent, overvoltage, undervoltage, overheat, encoder disconnection, overload and regenerative circuit fault protection. Compact rack-mounted design facilitates easy cabinet installation and quick on-site replacement during maintenance. Due to 1500P/R encoder hardware configuration, it cannot directly substitute 1000P/R type AC1ER models without parameter modification.

Mainly used as standard replacement spare part for feed axis maintenance of vintage machine tools equipped with YASNAC VS-800 CNC system; also widely applied for servo renovation of small precision automation equipment with ±10VDC analog control and 1500P/R incremental encoder feedback.