CACR-SR03SB1AF is a 0.3kW original Yaskawa AC Servopack from classic CACR-SR series, designed to match Yasnac VS-800 CNC system for feed-axis control on traditional CNC lathes and small machining centers. Production has been discontinued, and this model is mainly used as replacement spare part for aging equipment maintenance. It is compatible with Yaskawa USAM / USAF series 300W incremental encoder servo motors.

CACR: Standard series code of Yaskawa AC servo amplifier.SR: Multi-function control platform supporting speed, position and torque control via internal parameter configuration.03: Rated continuous output power of 0.3kW.SB: 200V-class dedicated main power board with unique internal power circuit layout different from BB/BE/BY/BZ versions.1A: Type-A customized control board with fixed basic control circuit for analog command input.F: Exclusive encoder interface circuit specially tailored for F-series incremental encoder motors.

Main power input: Three-phase AC 200V~230V with +10%/-15% tolerance at 50Hz or 60Hz; independent single-phase AC 200~230V for control power supply.Rated continuous output current: 3.0Arms; peak transient overload current: 8.5Arms for short-time acceleration and deceleration.Operating ambient temperature: 0℃~55℃; storage temperature: -20℃~85℃; working relative humidity ≤80%RH without condensation. Protection grade IP20 for cabinet-only installation; keep away from corrosive gas, heavy dust and oil mist. IGBT sine-wave PWM drive technology is adopted.

Three optional control modes: speed, position and torque control. It receives standard ±10VDC analog speed/position command from Yasnac CNC controller. Most parameters are factory default and adjustable for regular debugging without OEM lock. The control board is equipped with anti-interference circuit to ensure stable encoder signal transmission in complex industrial environments.Complete protection functions include overcurrent, overvoltage, undervoltage, overheat, regenerative circuit fault, encoder disconnection and CPU abnormal shutdown protection. A single seven-segment digital display on front panel shows real-time operating status and numerical fault codes; terminals P and N are reserved for external regenerative braking resistor connection.

R, S, T connect three-phase AC input power; U, V, W connect three-phase power cables of matched servo motor; PE terminal must be reliably grounded in accordance with local electrical safety standards; P/N terminals are used for external brake resistor wiring.Control terminal block includes analog command input, digital input for servo enable and fault reset, and dry-contact relay output for external fault alarm feedback. A dedicated round aviation connector follows AF standard pin definition for incremental encoder wiring.

Mount the servo vertically inside electrical cabinet and reserve sufficient top and bottom clearance for heat dissipation, avoid installation beside heat-generating parts such as transformers and contactors. Inspect all wiring thoroughly before power-on to prevent short circuit. No complicated parameter setting is required during regular replacement; finish no-load jog test to verify rotation direction and running stability before connecting mechanical load.

Disconnect main power and wait more than 10 minutes for internal capacitor residual high voltage discharge before any maintenance work to avoid electric shock. Clean cooling vents and fasten terminal screws every three months regularly. Once fault alarm triggers, check input voltage fluctuation, motor mechanical jamming, loose encoder wiring and insufficient heat dissipation in sequence; do not restart repeatedly until faults are fully removed.