USAGED-30A22K belongs to discontinued classic Yaskawa USAGED fully enclosed natural-cooled permanent magnet AC servo series with rated power of 2.9kW, factory pre-installed DC24V power-off electromagnetic brake and UTOPH-81AVF incremental rotary encoder configuration; suffix K stands for customized internal wiring layout and special connector pin definition tailored for domestic OEM heavy-duty CNC equipment, matched originally with Yaskawa CACR-SR70 high-power servo amplifier unit for heavy-load feed drive applications. This heavy-frame servo is specially developed for vertical heavy-load spindle axes, large-format machining center feed mechanisms and high-load cyclic reciprocating automation equipment requiring reliable power-off shaft holding function after sudden power loss.

USAGED indicates totally enclosed natural convection cooling base servo series; numeric 30 represents 2.9kW power grade; letter A refers to standard stator winding and universal internal mechanical structure; first digit 2 stands for solid parallel-key output shaft specification; second digit 2 denotes triple separated rear round connectors including independent ports for power cable, brake cable and encoder cable respectively; final suffix K marks factory-customized internal wiring and exclusive pin assignment different from standard E export version variants.

The servo motor is designed for three-phase AC 200V~230V industrial input voltage at 50Hz/60Hz working frequency. Continuous rated output power reaches 2.9kW with rated full-load operating current of 26A, fixed synchronous rated rotational speed at 1500rpm and continuous rated torque of 18.6Nm; instantaneous peak overload torque can reach three times continuous rated torque to cope with heavy startup acceleration and sudden impact load conditions.Built-in DC24V electromagnetic brake gets energized to release output shaft during normal operation and mechanically locks shaft instantly once brake power supply cuts off, effectively preventing vertical axis falling caused by gravity load. Equipped UTOPH-81AVF differential line driver incremental encoder with 8192 pulses per revolution standard resolution and exclusive K-version customized pin definition, which can be directly connected to supporting CACR-SR70 servo drive without extra wire rearrangement. Stator winding adopts Class F insulation standard with embedded internal thermal sensing circuit transmitting overheat alarm signal to matched servo driver to trigger automatic overload shutdown protection; built-in surge suppression components inside terminal compartment improve anti-interference capability against industrial field power surge and electromagnetic radiation disturbance.

Whole motor housing adopts fully enclosed sealed structure with IP50 protection class and pure natural casing heat dissipation without auxiliary cooling fan; drive-end solid output shaft is equipped with standard parallel flat keyway for rigid coupling connection with ball screw or reduction gearbox; integrated rear brake housing extends overall axial length compared with non-brake same-power models, total net weight is approximately 18.1kg with unified large-size standard flange mounting dimension for heavy-load equipment installation.Valid continuous working ambient temperature ranges from 0°C to +40°C; permissible long-term storage temperature spans -20°C to +70°C; applicable working relative humidity keeps 5%RH~80%RH under non-condensation environment. When installation altitude exceeds 1000 meters above sea level, users must properly derate continuous output load to compensate reduced natural heat dissipation efficiency at high elevation. The motor can resist standard industrial vibration within 10Hz~55Hz frequency range; installation locations with corrosive chemical gas, continuous liquid splashing or dense conductive metal dust accumulation are forbidden for long-term running.

USAGED-30A22K is originally designated to pair Yaskawa CACR-SR70 series high-power servo amplifier, supporting two mainstream external command input modes including ±10VDC analog voltage speed instruction and differential pulse position command transmitted from upper CNC numerical control system or PLC controller to realize high-precision repetitive positioning and frequent forward-reverse reciprocating motion of heavy-load automation machinery. Thanks to integrated built-in power-off brake structure, vertical installation equipment saves additional external mechanical clamping fixture for anti-falling protection during unexpected power failure or emergency shutdown. The incremental feedback configuration requires full mechanical origin homing operation after complete power cut to recover accurate zero position before formal equipment operation.

Multi-layer comprehensive safety protection is realized through coordination between motor built-in sensors and matched servo driver. Abnormal winding over-temperature signal triggers driver overload protection to stop motor operation and avoid winding burnout under long-time overloading; open-circuit or poor contact of encoder cable will trigger dedicated encoder failure alarm displayed on servo drive panel; stator winding short-circuit and abnormal input overcurrent activate hardware overcurrent protection for immediate power cutoff; open/short fault of built-in brake coil will output auxiliary fault warning signal on corresponding drive unit. All internal signal circuits are fitted with noise absorption components to restrain industrial on-site electromagnetic interference from inverter and surrounding high-power electrical equipment.

Direct field replacement needs identical original USAGED-30A22K spare part; standard export E-version USAGED-30A22KE or non-brake variant motors cannot realize direct substitution unless full servo drive parameter reset and complete connector wiring modification are finished after replacement. Before disassembling for bearing inspection, brake maintenance or encoder overhaul work, operators must cut off three-phase main power supply and brake DC24V power completely and wait no less than 15 minutes for full discharge of servo internal DC bus capacitor to eliminate residual high voltage electric shock risk.Routine periodic maintenance includes fastening three groups of rear connector terminal screws every three months, supplementing high-temperature resistant bearing grease after cumulative 8000 running hours and cleaning casing surface accumulated dust every half year to maintain original rated heat dissipation performance. Random alteration of encoder pin definition, brake wiring or internal stator winding layout will result in motor runaway and permanent servo drive fault locking state.

This heavy-duty servo motor is widely used for X/Y/Z heavy-load feed axes of large vertical machining centers and heavy-duty CNC lathes, vertical lifting drive of automated heavy component assembly production line, high-load rotary indexing table of forging and packaging machinery, as well as customized large non-standard automation equipment with vertical installation, frequent start-stop cyclic operation and strict power-off anti-drop positioning requirements under medium and heavy load working conditions.