SGMG-05A2AAS belongs to Yaskawa original Sigma-I SGMG medium inertia AC servo motor, rated power 450W, 200V AC input grade, matching dedicated servo driver model SGDB-05AD / SGDB-05ANA. Suffix AS stands for incremental encoder specification, standard taper shaft with parallel key structure, no built-in holding brake, Japan original production.

Rated supply voltage is three-phase AC200V output from servo drive, rated continuous working current 3.8A, rated rotation speed 1500rpm, continuous rated torque 2.87N·m, instantaneous peak torque reaches three times rated value around 8.61N·m. Equipped with standard incremental pulse encoder, insulation class F, fully enclosed self-cooled construction with IP65 protection except shaft penetration area.Valid working ambient temperature ranges from 0℃ to 40℃; continuous operation above 40℃ needs load derating. Ambient working humidity is controlled between 20%~80% RH without dew condensation. The motor can run full load below altitude 1000m; over 1000m elevation shall reduce actual loading capacity. It passes AC1500V one-minute dielectric withstand test, insulation resistance exceeds 10MΩ when tested under DC500V power supply.

Cut off all main power supply completely before wiring, installation, disassembly or maintenance to avoid electric shock and coil burnout damage. Never directly connect commercial mains AC power to motor U/V/W three power terminals, wrong direct connection will immediately burn motor internal winding.

Only pair with original SGDB series Σ-I servo drive; mismatching with SGDM, SGDH or other series drivers will trigger permanent servo fault alarm and cannot work normally. Do not install the unit in environment containing flammable gas, corrosive vapor, dense dust or continuous liquid splash. Long-term overloaded running beyond rated torque is forbidden to prevent winding overheating and permanent aging damage. Mounting location shall avoid persistent strong vibration and direct long-time sunlight irradiation, guarantee smooth surrounding airflow for heat dissipation.

Motor power terminals U, V, W connect respectively to corresponding main circuit output terminals of SGDB-05AD driver; PE ground terminal must connect reliably to equipment protective earth for safety grounding protection. Incremental encoder cable plug inserts into driver CN2 encoder socket, exclusive shielded encoder wire must be adopted and maximum allowed cable length is within 20 meters. Improper pin definition or loose plug will cause driver encoder error alarm and servo ready signal cannot activate.

The motor uses standard flange mounting method. When assembling coupling between motor taper output shaft and mechanical load shaft, keep coaxial tolerance within 0.1mm to prevent excessive radial pull and axial thrust damaging motor bearing and internal encoder core parts. Tighten all fixing bolts with specified torque value to avoid bolt loosening during high-speed reciprocating operation.

Double verify correctness of power wiring and encoder wiring before switching driver power on. After power supply turns on, set corresponding motor parameter codes inside SGDB driver according to SGMG-05A2AAS 450W specification and incremental encoder mode. Complete driver automatic motor parameter identification and inertia auto-tuning function. Switch servo to JOG jog mode to implement forward and backward trial rotation, check no abnormal mechanical noise, shake or jitter during low-speed operation. Put machine into formal automatic operation after zero fault alarm during whole test run.

OV overvoltage alarm is mostly caused by abnormal input power fluctuation or excess regenerative feedback energy; measure input AC supply voltage and install external regeneration resistor if necessary. OC overcurrent alarm appears when U/V/W wiring short-circuit or internal motor winding short damage exists; check wire insulation integrity and coil continuity. Encoder fault alarm mainly comes from loose encoder plug, broken inner core of connecting cable or encoder circuit damage; replace cable or repair connector accordingly. OT overheat alarm results from poor heat dissipation environment or long-term overload running; improve surrounding ventilation and reduce continuous actual load torque.

Full official English user manual of SGMG series Σ-I servo is Yaskawa S Series User Manual (document for SGDB+SGMG total 284 pages), downloadable at Yaskawa global official website legacy servo manual download channel.