USAGED-09AS1S is discontinued classic permanent magnet AC servo belonging to Yaskawa USAGED full-enclosed self-cooled series, rated 0.85kW ferrite magnet structure servo unit specially configured with absolute rotary encoder and taper keyed output shaft; the trailing S suffix stands for factory customized wiring specification without built-in power-off electromagnetic brake, differing from brake-equipped 09A21S variant. This model is designed for high-precision positioning of CNC machine feed axes, automated rotary indexing tables and precision transmission machinery, matched exclusively with Yaskawa CACR-SR30 series servo amplifier under original factory parameter setup.

USAGED indicates fully enclosed natural cooling base series; numeric 09 corresponds to 0.85kW power grade; letter A represents standard internal stator structure; middle S denotes UTMAH absolute encoder configuration instead of conventional incremental encoder; digit 1 means dual rear round plug layout for separated power and encoder cable connection; final S marks OEM fixed encoder pin definition and non-brake design.

The motor is rated for three-phase AC 200V~230V 50/60Hz industrial input power. Continuous rated output power reaches 0.85kW with rated full-load operating current of 7.6A and fixed synchronous rated rotational speed at 1500rpm; continuous rated torque stands at 5.39Nm, while instant peak overload torque can reach three times continuous rated torque to satisfy heavy startup and transient impact load demands.Feedback component is UTMAH-B15ASB absolute rotary encoder with 8192 pulses per revolution (15-bit resolution) adopting differential line driver signal output, whose pin assignment is uniquely defined to fit supporting CACR-SR30 drive without extra wiring modification or parameter rewriting. Stator winding applies Class F insulation standard to maintain stable dielectric property during long-term full-load cyclic operation, with embedded winding thermal sensing circuit linked to matched servo drive for overheat protective shutdown trigger. No internal electromagnetic brake coil is equipped on this variant, requiring independent external mechanical locking fixture for vertical installation anti-falling protection.

Overall motor housing adopts totally enclosed construction with IP50 protection class and pure natural convection cooling without external cooling fan; drive-end output shaft is taper structure with integrated flat keyway and built-in shaft oil seal, flange centering mounting diameter set at 110mm for unified industry standard installation, net weight approximately 5.0kg due to no extra brake housing assembly.Valid continuous working ambient temperature ranges 0°C to +40°C; permissible storage temperature covers -20°C to +70°C; applicable relative working humidity maintains 5%~80%RH under non-condensation working environment. Continuous rated load must be properly derated when mounting elevation exceeds 1000 meters above sea level to offset degraded heat dissipation efficiency at high altitude. Working surroundings with corrosive gas, continuous liquid splashing or dense conductive dust accumulation are prohibited; the motor withstands standard industrial vibration within 10Hz~55Hz frequency scope.

USAGED-09AS1S is originally paired with Yaskawa CACR-SR30 series servo unit, supporting two mainstream command input types including ±10VDC analog voltage speed instruction and differential pulse position command transmitted from upper CNC or PLC controller, enabling high-accuracy repetitive positioning and frequent forward-reverse reciprocating movement of automation equipment. Benefited from absolute encoder configuration, the servo system can complete origin positioning without mechanical homing operation after unexpected power cut, greatly improving equipment startup efficiency compared with incremental encoder equipped models. Since no built-in brake is fitted, external mechanical stop or clamping mechanism needs separate configuration for vertical axis application to prevent free dropping under gravity load.

Multiple layers of protective logic are realized via cooperation between motor built-in sensors and matched servo driver. Internal winding temperature probe feeds abnormal temperature signal to servo amplifier to activate overload stop protection against winding burnout from long-time overloading; encoder cable disconnection or poor contact triggers specified encoder fault alarm on driver panel; continuous excessive load operation will activate overload warning while stator winding short-circuit or abnormal input overcurrent results in overcurrent protection shutdown. Internal signal circuit is pre-installed with surge absorption components to strengthen anti-interference capacity against industrial field instantaneous power surge and electromagnetic noise disturbance.

Direct field replacement requires identical USAGED-09AS1S original spare part; brake-type 09A21S or incremental encoder version motors cannot be directly substituted unless complete drive parameter reset and wiring rearrangement are finished post replacement. Before disassembling for bearing inspection, encoder overhaul or internal component maintenance, users must fully disconnect three-phase main input power and wait minimum 15 minutes for full discharge of servo internal DC bus capacitor to eliminate residual high voltage risk of electric shock.Routine periodic maintenance includes fastening power and encoder plug terminal screws every three months, replenishing bearing high-temperature lubricant grease after cumulative 8000 running hours and clearing casing surface accumulated dust every half year to retain rated heat dissipation capability. Random alteration on internal encoder pin definition or stator winding wiring will lead to motor runaway and permanent servo fault locking status.

This servo motor is widely applied for X/Y/Z feed axes of small-medium CNC lathes and bench vertical machining centers, rotary index table of automated component assembly production line, precision positioning driving of packaging equipment and customized compact non-standard automation machinery, especially preferred for horizontal mounting working condition demanding absolute position memory after power failure and medium-load cyclic frequent start-stop operation with strict positioning precision requirement.