CACR-SR05AB1ER is a standard non-locked 0.5kW AC servo amplifier from Yaskawa classic CACR-SR series, designed to cooperate with YASNAC VS-800 CNC system for legacy Japanese CNC lathes and small machining centers. It is configured to work with Yaskawa USAREM-R series 500W incremental encoder servo motors. Original production has been discontinued, and the unit is mainly supplied as general replacement spare part for equipment maintenance and small automation retrofitting. Unlike Y-suffix locked OEM versions, this model adopts universal factory firmware allowing adjustable parameters.

CACR stands for standard series code of Yaskawa AC SERVOPACK servo drive. SR represents multi-control hardware platform supporting speed, position and torque three operation modes via internal parameter setup. 05 indicates rated output power of 0.5kW. AB refers to customized mainboard with ±10VDC analog command circuit for VS-800 CNC under AC200V voltage grade. Digit 1 means internal feedback circuit matching 1000P/R incremental rotary encoder. E stands for incremental PG feedback specification and R is designated hardware version compatible with USAREM-R servo motors. No customized locked OEM firmware is preloaded inside this model.

Main power input is three-phase AC200V~230V, 50/60Hz with voltage tolerance +10%/-15%, and control power is independently fed by single-phase AC200V~230V. Rated continuous output current is 4.2Arms and instantaneous peak overload current reaches 11.0Arms to meet rapid acceleration and deceleration load demands. CN1 port receives ±10VDC analog speed and position command from VS-800 CNC controller; CN2 feedback interface exclusively fits 1000P/R incremental encoders rather than absolute encoders. The drive uses natural air cooling with IP20 protection grade and requires cabinet-only installation. Operating ambient temperature ranges from 0℃ to 55℃, storage temperature ranges from -20℃ to 85℃, working humidity ≤80%RH without condensation, and maximum applicable installation altitude is below 1000 meters above sea level.

Universal editable firmware enables free parameter modification for different motor matching, easy interchange with other standard CACR-SR05 models without fixed machine-specific parameter limitation, which is the core difference from Y3-series locked customized servo drives. Complete built-in protection functions cover overcurrent, overvoltage, undervoltage, overheat, encoder disconnection, overload and regenerative circuit fault protection for reliable long-term operation. Compact rack-mounted layout supports convenient DIN rail cabinet installation and quick field replacement during equipment overhaul. Incremental encoder configuration requires homing operation after each power restart.

Mainly used for feed axis maintenance and spare replacement of vintage CNC machine tools equipped with YASNAC VS-800 control system; also widely applied for servo upgrading of small customized precision automation equipment with ±10VDC analog control and 1000P/R incremental encoder feedback.