CACR-SR03BB1BF-Y199 is a customized 0.3kW AC Servopack manufactured by Yaskawa Electric, belonging to classic CACR-SR Σ-X servo series, matched with Yasnac VS-800 CNC system and dedicated for old-type CNC machine tools, special customized version marked with suffix Y199 for fixed machine configuration. It adopts IGBT sine-wave PWM full closed-loop control design, original produced in Japan, widely used for small feed axis drive of lathe, milling machine and machining center; this customized variant is factory preset fixed parameters, exclusive encoder interface and control logic for designated machine model, cannot be replaced by standard ordinary CACR-SR03 model directly.

CACR: Yaskawa standard AC servo amplifier general series code for AC servo drive.SR: Base speed-control framework, expandable with position and torque triple closed-loop control function.03: Rated continuous output power 0.3kW, matching USAM/USAF series 300W Yaskawa servo motor.BB1: Main circuit hardware version, power terminal layout and 200V grade power input specification.BF: Custom control board definition, exclusive incremental encoder signal processing circuit, fixed pulse receiving specification for matched motor encoder.Y199: Factory exclusive customized code, contains fixed internal parameter, customized I/O logic, CNC analog command matching modification for specific OEM machine tool, fixed communication definition with Yasnac CNC host.

Main power supply is three-phase AC 200V~230V, allowable voltage fluctuation +10%/-15%, 50Hz/60Hz; control circuit adopts independent single-phase AC 200~230V input. Rated continuous output current is 3.0Arms, peak instantaneous overload current reaches 8.5Arms for short-time acceleration and deceleration load.Working ambient temperature range is 0℃~55℃ for running condition, storage temperature from -20℃ to 85℃; working environment humidity below 80%RH without condensation, forbidden corrosive gas, heavy dust and oil mist surroundings.Feedback supports fixed pulse incremental encoder, Y199 customization locks encoder resolution matching with original configured servo motor; main control receives ±10VDC analog speed/position command from CNC controller as default control signal input mode.

Three control modes including speed control, position control and torque control are built inside, switchable via internal fixed parameters preset by Y199 factory setting. Equipped with complete protection functions: overcurrent protection, overvoltage/undervoltage protection, overheat protection, regenerative circuit fault protection, encoder signal loss protection and CPU abnormal shutdown protection.Front panel equips single 7-segment digital display to show real-time running status and numerical fault alarm codes for quick troubleshooting during equipment maintenance. Built-in regenerative braking circuit interface, external braking resistor can be wired at P/N terminal for high frequent start-stop working condition.

R, S, T terminals connect three-phase main AC input power; U, V, W connect three power wiring of matched servo motor; PE terminal must connect cabinet protective ground reliably complying with electrical safety standard. P and N terminals are reserved for external dynamic braking resistor connection.Control terminal part includes analog command input port for CNC ±10V instruction, digital input terminals for servo enable, fault reset signal, dry contact relay output for external fault alarm feedback, exclusive dedicated connector for motor encoder feedback wiring modified by Y199 custom specification.

Vertical installation inside electrical control cabinet, reserve enough cooling clearance above and below the servo unit to avoid heat accumulation caused by adjacent power components or transformers. Main application scene: Yasnac VS-800 system equipped old CNC lathe, small machining center feed X/Y/Z axis drive, original equipment matching spare replacement part only.Power-on operation requirement: verify all power and control wiring before energization; Y199 model parameters are solidified at factory, no need for full parameter reset after normal replacement; perform no-load jog test first before connecting mechanical load to confirm rotation direction and running stability.

Cut off total power supply at least 10 minutes before maintenance for capacitor residual high voltage discharging safety. Regularly clean ventilation cooling slot dust and check terminal screw tightness quarterly to prevent poor contact failure. When alarm code appears, check input power stability, mechanical motor blocking, loose encoder wiring and overheating from poor heat dissipation sequentially; Y199 customized program cannot be arbitrarily rewritten by universal standard servo parameter software.