Built-in Encoder Motors

BAE-BMEAV series

Built-in Encoder Motors Motors with built-in encoder represent a revolutionary component in the automation field providing OEM and end user with newopportunities and with notable economic advantages due to its user-friendly design. The range of three phase asynchronous motorswith built-in encoder has been designed specifically to offer to the end user a comprehensive choice of an already widely tested motorwith superior quality. MGM motors with integrated encoder can be divided in two series of brake motors (BAE/BMEAV) and two series of standard motors (SAE/SMEAV) without brake. The power range starts from 0.06 kW up to 45 kW (frame size from 56 up to 225). The unit consists ofa three phase asynchronous high efficiency motor with a low moment of inertia and with the encoder located at the Non-Drive side.Motors are designed to be suitable for industrial inverter use. Precise dynamic balancing together with an accurate motor insulation system areadopted in order to withstand electrical and mechanical stress. The mechanical coupling is the same standard motors (special shaftand flange are available on request), wirings are very simple to be made: power and electrical signal duly separated. MGM motorswith integrated encoder can be supplied in conformity with requirements of standards UL 1004 “Electric motors” and CSA C 22.2No. 100-95 “Motors and industrial generators” (cCSAus approval).
Technical Characterisitic MGM provides 4 different motor series suitable to meet accurately all possible drives challenges. BAE series: asynchronous three phase fan cooled brake motors with built-in encoder and frame size from 71 up to 225. The encoderis located at the Non-Drive side in a safe place protected by a well closed cover. Forced ventilation is available on request. The motoris provided as standard with separate brake supply. The brake coil is AC as standard, while DC is available on request. BMEAV series: asynchronous three phase brake motors with DC brake with axial forced ventilation, built-in encoder and frame sizefrom 63 up to 160. The encoder is located at the non drive end side between the brake and the servo fan. The motor is supplied asstandard with separate brake supply. Side manual return brake release available on request. SAE series: asynchronous three phase fan cooled motors with built-in encoder and shaft heights between 71 mm and 225 mm. Theencoder is located at the non drive end side in a safe place protected by a well closed cover. On request it’s available with forcedventilation. SMEAV series: asynchronous three phase motors equipped with forced ventilation with built-in encoder and frame size from 71 upto 225. The encoder is located at the non drive end side inside the fan cover between the motor and the forced cooling fan. Encoder The encoder is a rotational transducer to convert an angular movement into a series of electrical digital impulses. Usually the encodersused on MGM motors are based on the working principle of the angular movement transduction. The reading system is based on the rotation of a radial graduated disc formed by opaque windows alternated with transparent ones. This system is all illuminated inperpendicular way by an infrared light source, so the light projects the disc image on the surface, which is covered by a grating, havingthe same step as the disc. The receiver converts the light variations occurring with the disc shifting into their corresponding electrical variations. Incrementalencoder position is determined by the number of impulses from the zero index; Absolute encoder position is determined by an outputposition code which is univocally determined within each encoder revolution. To exactly identify the incremental encoder, the fallowingcharacteristics have to be indicated: - Resolution - Impulse of Zero - Power supply - Electronic output configurationTo identify absolute encoders are additionally required:- Code - Single turn or Multi turnThe output cable is provided as standard without connector (floating cable). On request a connector can be supplied.Please contact MGM for further information. Cooling Motor cooling is usually assigned to the motor self-cooling fan (BAE and SAE series). BMEAV and SMEAV series are forced cooling motors. On request the BMEAV and SMEAV series motors can be provided without forced ventilation (BME and SME series self-cooled motors). On request BAE and SAE series motors can be provided with radial forced ventilation (BAESV and SAESV series) with two servo fansfixed on the frame, additionally to the standard self cooling fan located at the Non-Drive and side.
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