UGTMEM-01MMGB3Y Minertia T Series Coreless DC Servo Motor Specification

UGTMEM-01MMGB3Y belongs to Yaskawa Minertia T compact coreless DC servo motor series, specially customized for precision micro automation, semiconductor assembling stations, optical detection equipment and compact laboratory precision testing machinery. It adopts exclusive cup-shaped coreless rotor structure without silicon steel laminations, eliminating inherent cogging torque of conventional iron-core motors and enabling ultra-smooth low-speed rotation with minimal torque fluctuation. Thanks to ultra-low rotor inertia design, the motor delivers outstanding dynamic response to sustain frequent rapid acceleration, deceleration and direction reversal under cyclic operating conditions. This model is manufactured without built-in power-off electromagnetic holding brake to maintain compact outline and lightweight body, utilizing fully enclosed natural convection cooling without auxiliary cooling fan. MMGB3Y stands for factory exclusive customized differential incremental encoder assembly with unique internal wiring layout, fixed cable specification and dedicated connector pin definition, differing from MMGB3X, MMG, AW and LMU coded motor variants in feedback configuration and outgoing harness arrangement.

UGTMEM is the base code for non-brake coreless DC servo motors within Minertia T product family; digit 01 denotes the smallest frame size corresponding to standard 100W rated continuous power rating. MMGB refers to a dedicated customized incremental encoder product group with proprietary terminal assignment and internal cabling standard set by original manufacturer; suffix B3Y specifies fixed factory encoder resolution, finished cable length, internal terminal layout and customized rear outgoing wire routing, the primary difference versus B3X version concentrates on tail cable routing mode and pin assignment definition, while mechanical dimension and main electrical parameters remain consistent. Direct interchange with motors carrying other encoder coding is unavailable unless full connector rewiring and complete servo parameter recalibration are accomplished after replacement.

The motor is rated for 90VDC nominal armature input voltage and must match original Yaskawa Minertia T-series dedicated DC servo amplifier to build complete closed-loop motion control system. Under standard rated operating environment, continuous rated output power hits 100W, full-load rated armature current is approximately 1.1A, nominal continuous operating speed is fixed at 3000rpm and allowable short-term peak no-load rotating speed reaches 3800rpm. Instantaneous peak overload torque can reach five times of rated torque to satisfy high-frequency start-stop and transient impact load demands. The integrated MMGB3Y differential line-drive incremental encoder is equipped with UVW magnetic pole origin detection signals following exclusive original wiring criteria, which cannot be replaced by regular specification encoders without full pin redefinition and servo drive parameter reset. Internal stator winding complies with Class F insulation standard, embedded with built-in thermal sensing component that transmits overheat warning signal to paired servo driver to trigger automatic power-off protection and avoid winding burnout caused by excessive temperature. Surge suppression components are pre-installed inside internal wiring cavity to restrain industrial instantaneous voltage spike and electromagnetic interference generated by surrounding switching power supplies and inverter devices.

Totally sealed motor housing meets IP54 ingress protection grade and relies entirely on shell natural heat dissipation without extra cooling fan structure. Standard solid output shaft is equipped with integrated flat keyway for rigid connection with miniature precision ball screw, small timing belt pulley and compact planetary reducer unit. Benefiting from brake-free compact construction, overall axial dimension is optimized, total net weight of complete motor assembly is roughly 0.42kg with unified miniature flange mounting size for direct installation on narrow-space equipment frames without additional transition fixture modification.

Valid continuous working ambient temperature ranges from 0°C to +40°C; permissible spare part storage temperature covers -20°C to +70°C; applicable operating relative humidity is controlled between 5%RH and 80%RH under non-condensing working condition to prevent dew-caused internal circuit short-circuit damage. When installation altitude exceeds 1000 meters above sea level, continuous running load needs proper derating to compensate reduced heat dissipation efficiency under thin atmospheric environment. The motor can withstand standard industrial vibration within 10Hz to 55Hz frequency scope; installation locations with corrosive gas, continuous liquid splashing and dense conductive dust accumulation are prohibited to extend service life of front bearing, internal winding and encoder core components.

UGTMEM-01MMGB3Y is originally compatible with classic Yaskawa Minertia T-series dedicated DC servo drivers, supporting two mainstream external command input forms including ±10VDC analog voltage speed instruction and differential pulse position command transmitted from upper PLC or miniature CNC controllers. The matched servo control system supports flexible switching among position closed-loop control, speed closed-loop control and torque closed-loop control according to diverse production process requirements. Since no built-in power-off brake is configured, vertically mounted equipment equipped with this motor needs independent external mechanical locking structure to avoid free falling of load after unexpected power failure. As onboard MMGB3Y incremental encoder has no absolute position storage capability, full mechanical origin homing operation must be executed after complete system power outage before formal equipment startup to restore accurate mechanical zero point for subsequent high-precision positioning movement.

Multi-layer comprehensive safety protection is realized through coordination between internal embedded sensing components and matched servo amplifier. Winding over-temperature signal triggers servo automatic overload shutdown to prevent permanent thermal damage of coreless winding; open circuit or poor contact of MMGB3Y exclusive encoder cable activates independent encoder fault alert displayed on servo operation panel; winding short-circuit and abnormal overcurrent input lead to hardware overcurrent protection and immediate main power cutoff. All internal encoder feedback signal circuits are fitted with built-in noise filtering elements to filter complex on-site electromagnetic interference and ensure stable transmission of position feedback signals throughout long-term operation.

On-site spare replacement requires identical original UGTMEM-01MMGB3Y motor unit; same-power motor with different encoder coding or brake-equipped variant cannot be directly installed for substitution unless full connector rewiring and comprehensive servo parameter resetting are finished after installation. Before disassembling the motor for bearing inspection or encoder maintenance work, service personnel must fully cut off 90VDC main armature power supply and wait no less than 15 minutes for full discharge of servo internal DC bus capacitor to eliminate residual high voltage and avoid electric shock risk. Routine maintenance items include fastening rear connector fixing screws every three months, replenishing high-temperature resistant bearing grease after cumulative continuous running time exceeds 8000 operating hours and cleaning housing accumulated dust every half year to retain original natural heat dissipation performance. Random modification to MMGB3Y exclusive encoder pin definition and internal wiring layout will result in unexpected motor runaway and permanent servo driver locking fault.

This compact non-brake coreless DC servo motor is widely adopted for micro feed axes of desktop precision testing instruments, small indexing positioning turntable of micro-component automatic assembly production lines, fine drive unit of optical microscopic inspection equipment and miniaturized precision packaging automation machinery. It is particularly applicable for horizontally installed equipment with limited installation space, frequent cyclic start-stop motion and strict high-precision repeated positioning control requirements.