CACR-SR03SZ1SS-Y226 is a discontinued 0.3kW Yaskawa AC Servopack belonging to classic CACR-SR series, OEM customized with factory-locked Y226 parameter firmware exclusively supporting Yasnac VS-800 CNC system. It is designed for feed axis driving of customized CNC lathes and small machining centers, matched with Yaskawa USAF-series 300W incremental encoder servo motors. Original production has been phased out, and this servo is only available as replacement spare part for maintenance of special aging machine tools. The suffix Y226 represents dedicated factory pre-set locked parameters tailored for specific machine tool configuration.

CACR is general series code for Yaskawa AC servo amplifier. SR stands for multi-functional control platform configurable for speed, position and torque control by internal parameters. 03 indicates rated output power of 0.3kW. SZ refers to special 200V-class main power board with exclusive internal circuit layout different from SB, BB and BY variants. 1SS means S-type control PCB equipped with SS-standard incremental encoder interface circuit. Y226 is unique OEM customization code, all core running parameters are pre-solidified and locked at factory.

Main power input: three-phase AC 200V~230V with +10%/-15% tolerance, 50/60Hz; independent single-phase AC200~230V for control power supply. Rated continuous output current is 3.0Arms, peak transient overload current reaches 8.5Arms for short-time acceleration and deceleration load. Operating ambient temperature ranges from 0℃ to 55℃; storage temperature -20℃~85℃; working relative humidity ≤80%RH without condensation. IP20 protection grade restricts installation inside control cabinet only; keep away from heavy dust, oil mist and corrosive gas surroundings. The unit adopts IGBT sine-wave PWM drive and receives standard ±10VDC analog command signal from Yasnac CNC controller.

Three optional control modes: speed, position and torque control. Key parameters such as servo loop gain and electronic gear ratio are locked under Y226 customized program; arbitrary parameter modification will lead to abnormal motor operation or axis positioning deviation. Optimized anti-interference circuit on control board ensures stable incremental encoder feedback signal under complex industrial electromagnetic interference.Full protection functions include overcurrent, overvoltage, undervoltage, overheat, regenerative circuit breakdown, encoder signal loss and CPU fault protection. Single seven-segment digital display on front panel shows real-time running status and numeric fault codes; P and N terminals are reserved for external regenerative braking resistor wiring.

R, S, T terminals connect three-phase input power source; U, V, W terminals link matched USAF servo motor power cables; PE terminal must implement reliable protective grounding complying with local electrical safety regulations; P/N terminals are used for external brake resistor connection.Control terminal block receives ±10VDC analog instruction from CNC system, digital input signals for servo enable and fault reset, and dry-contact relay output provides external fault alarm feedback. Special round aviation connector follows SS-Y226 customized pin definition for incremental encoder wiring.

Mount the servo vertically inside electrical cabinet and reserve enough top and bottom clearance for heat dissipation, staying away from heat-generating components such as transformers and contactors. Complete comprehensive wiring inspection before power-on to avoid short-circuit damage. Pre-locked Y226 factory parameters enable direct replacement without large-scale parameter tuning. Complete no-load jog test to confirm motor rotation direction and running stability prior to mechanical load connection.

Cut off all input power and wait over 10 minutes for internal capacitor residual high voltage discharge before maintenance work to prevent electric shock hazard. Clean cooling vents and retighten loose terminal screws every three months regularly. Once fault alarm appears, check sequentially input power fluctuation, motor mechanical jamming, loose encoder wiring and insufficient cabinet heat dissipation; repeated power-on is forbidden before all faults are fully eliminated, and random revision of locked Y226 customized parameters is strictly prohibited.