CACR-SR03SB1BF-Y199 is a factory-customized OEM 0.3kW 200V-class discontinued Yaskawa CACR-SR Servopack exclusively matched with Yasnac VS-800 CNC control system for feed axis driving on old CNC lathes and small machining centers. Derived from standard CACR-SR03SB1BF universal servo, the suffix Y199 stands for machine-builder locked fixed parameter firmware preset during original equipment manufacturing; core internal parameters are solidified and cannot be arbitrarily modified, only for original machine replacement maintenance and paired with Yaskawa USAF-series 300W incremental encoder servo motors.

CACR = Yaskawa early-generation AC servo amplifier general series code; SR = multi-mode control board supporting speed, position and torque control; 03 = rated output power 0.3kW; SB = dedicated 200V main power circuit board with exclusive internal layout; 1BF = B-type control board plus F-spec incremental encoder interface for USAF servo motors; Y199 = unique OEM customized marking with all gain, electronic gear ratio, analog command gain and I/O definition pre-locked by factory programming.

Main circuit power: 3-phase AC 200~230V, tolerance +10%/-15%, 50/60Hz; independent single-phase AC 200~230V for control power supply. Rated continuous output current: 3.0Arms, peak transient overload output current:8.5Arms for acceleration & deceleration transient load. Working ambient temperature:0℃~+55℃; storage temperature:-20℃~85℃; allowable working humidity ≤80%RH without dew condensation; protection grade IP20, only indoor cabinet installation away from oil mist, corrosive gas and heavy dust. Adopts IGBT sine-wave PWM drive, receives ±10VDC analog speed instruction from VS-800 CNC controller as core control signal.

Command input is standard ±10V analog voltage speed signal from Yasnac VS-800 CNC host. Different from non-custom standard CACR-SR03SB1BF, all critical tuning parameters of Y199 variant are firmware-locked; unauthorized parameter change will cause motor out-of-step, abnormal speed or axis positioning mismatch with original machine tool. Designed for incremental pulse encoder feedback, default matching 5000PPR USAF 300W servo motor encoder per Y199 OEM setting. Full protection functions including overcurrent, overvoltage, undervoltage, overheat, phase loss, encoder breakage and CPU fault protection; single digital tube on front panel displays running status and numeric fault codes for on-site troubleshooting; P/N terminals reserved for external regenerative braking resistor wiring as per original machine design.

Terminal R/S/T connects three-phase main input power; U/V/W links three power leads of matched USAF servo motor; PE terminal must implement reliable protective grounding complying with local electrical safety standards; P/N terminals for external brake resistor connection. Control terminal block receives CNC analog command, servo enable and fault reset digital signals; built-in dry-contact relay outputs fault alarm signal back to CNC cabinet. Round dedicated aviation connector for incremental encoder wiring following fixed Y199 customized pin assignment rule. Mount vertically inside control cabinet with sufficient upper/lower clearance for heat dissipation and keep distance from heat-generating components like contactors and transformers; complete full wiring inspection before power-on to avoid short-circuit damage.

Cut all input power and wait minimum 10 minutes for internal capacitor residual high voltage full discharge before disassembly or maintenance operation for electric shock prevention. Clean cooling vents and fasten loose terminal screws every three months regularly. Once fault alarm occurs, check power supply fluctuation, motor mechanical jamming and loose encoder wiring sequentially; never repeatedly power on after Y199 parameter lock failure, replacement with identical Y199 model is the only valid maintenance solution for original equipment restoration.