CACR-SR03SZ1SS-Y22 is a 0.3kW discontinued Yaskawa AC Servopack from classic CACR-SR series, OEM customized with factory-locked Y22 parameter firmware exclusively designed for Yasnac VS-800 CNC systems. It serves as feed axis driver for customized CNC lathes and small machining centers and is matched with Yaskawa USAF series 300W incremental encoder servo motors. Original production has been discontinued, and this model is only available as replacement spare part for maintenance of aged special-purpose machine tools. The suffix Y22 represents unique factory preset locked parameters tailored for designated machine specifications.

CACR is the general series code for Yaskawa AC servo amplifier. SR stands for universal control platform configurable for speed, position and torque control via internal parameter settings. 03 means rated output power of 0.3kW. SZ refers to dedicated 200V-grade main power board with exclusive internal circuit design different from SB, BB and BY versions. 1SS indicates S-type control board integrated with SS-standard incremental encoder interface circuit. Y22 is the OEM customization identifier, with all core control parameters pre-solidified and locked during factory programming.

Main power supply is three-phase AC 200V~230V with +10%/-15% tolerance at 50Hz or 60Hz; independent single-phase AC 200~230V supplies power to the control circuit. Rated continuous output current is 3.0Arms and peak transient overload current reaches 8.5Arms to handle short-time acceleration and deceleration loads. Operating ambient temperature ranges from 0℃ to 55℃; storage temperature ranges from -20℃ to 85℃; working relative humidity ≤80%RH with no condensation permitted. Rated IP20 protection allows installation only inside control cabinet, away from environments containing corrosive gas, heavy dust and oil mist. The unit adopts IGBT sine-wave PWM driving technology and receives ±10VDC analog command signals from Yasnac CNC controller.

Three optional control modes: speed, position and torque control. Critical parameters including servo loop gain and electronic gear ratio are locked under Y22 customized program; unauthorized parameter modification will result in abnormal motor operation or axis positioning inaccuracy. Built-in anti-interference circuit ensures stable incremental encoder signal transmission under complex industrial electromagnetic interference.Full protection functions cover overcurrent, overvoltage, undervoltage, overheat, regenerative circuit failure, encoder signal loss and CPU abnormal protection. A single seven-segment digital display on front panel shows real-time running status and numeric fault codes; terminals P and N are reserved for external regenerative braking resistor wiring.

R, S, T terminals connect three-phase input power source; U, V, W terminals link power cables of matched USAF servo motor; PE terminal must connect reliable protective grounding complying with local electrical safety codes; P/N terminals are 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. Dedicated round aviation connector follows SS-Y22 customized pin definition for incremental encoder wiring.

Mount the servo vertically inside electrical cabinet and reserve enough top and bottom clearance for heat dissipation, keeping distance from heat-generating components such as transformers and contactors. Thoroughly check all wiring before power-on to avoid short-circuit damage. Pre-locked Y22 factory parameters enable direct replacement without large-scale parameter tuning. Complete no-load jog test to confirm motor rotation direction and operational stability before connecting mechanical load.

Cut off all input power and wait more than 10 minutes for internal capacitor residual high voltage discharge before any maintenance work to prevent electric shock risk. Clean cooling vents and retighten loose terminal screws every three months regularly. When fault alarm occurs, sequentially check power supply fluctuation, motor mechanical jamming, loose encoder wiring and insufficient cabinet heat dissipation; repeated startup is forbidden before all faults are fully removed, and random revision of locked Y22 customized parameters is strictly prohibited.