BMS Series. DC Brushless Torque Motors. Slotless, brushless stator design provides zerocogging torque for unsurpassed velocity control

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Maud Warren
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BMS Series Rotary Motors BMS Series DC Brushless Torque Motors Slotless, brushless stator design provides zerocogging torque for unsurpassed velocity control Smoother velocity than with standard DC

brushless, slotless servomotors represent the ultimate in high-performance rotary motors.

1 BMS Series Rotary Motors BMS Series DC Brushless Torque Motors Slotless, brushless stator design provides zerocogging torque for unsurpassed velocity control Smoother velocity than with standard DC brushtype motors with the advantage of reliable brushless technology Standard NEMA frame sizes Ultra-high resolution capability with amplified sine-wave encoder and multiplier Aerotech s BMS series brushless, slotless servomotors represent the ultimate in high-performance rotary motors. Available in standard NEMA frame sizes, these motors utilize a slotless rotor design for superior velocity smoothness and control. Featuring rare-earth neodymium iron boron magnets and a high pole-count rotor, the BMS series provides maximum torque and acceleration in a small package. Custom mechanical or electrical variations of the BMS can be engineered with minimal lead time. Smoother than DC Motors The BMS series motors can replace standard brushless or brush-type motors when superior velocity smoothness and control are required. DC brush-type motors have been popular in applications such as machine tool and scanning because of their smooth low-speed control. The BMS motors provide superior smoothness and have higher acceleration capability than a DC brush motor. Higher acceleration results in higher machine throughput and performance. High Performance Design The BMS series is unlike conventional brushless servomotors because it incorporates a totally slotless stator design that provides the ultimate in smooth velocity control. These motors are designed for applications requiring superior torque and stability performance. The unique design of the BMS series motors provides a closer inertia match with mechanical systems than comparable models. This means better stability and easier tuning. Ultra-High Encoder Resolution The BMS series motors can be equipped with a variety of encoder resolution options for any application. In addition to the standard RS-4 line driver output, an optional amplified sine-wave encoder can be used to provide ultrahigh resolution. Aerotech offers encoder multipliers as an option for drives connected to the A3 system, as well as external multiplier boxes. Resolutions as high as,, counts per revolution are achievable. Aerotech GmbH, Südwestpark, 44 Nürnberg, Germany Fax:

2 BMS Series SPECIFICATIONS Model BMS6 BMS BMS8 BMS46 Winding Designation (,) P erformance Specifications () S tall Torque, Continuous (3) P eak Torque Rated Speed Rated Power Output, Continuous () E lectrical Specifications BEMF Constant (line to line, max) () C ontinuous Current, Stall (3) P eak Current, Stall (4,8) T orque Constant (,4) M otor Constant Resistance, C (line to line) Inductance (line to line) Maximum Bus Voltage Thermal Resistance Volts rpm 4, 3, 3,, watts / krpm / W oz-m/ W ohms mh VDC C/ W Number of Poles P Mechanical Specifications Motor Weight Rotor Moment of Inertia Max. Radial Load Max. Axial Load kg lb kg-m.6x x 4.66x.8x -s N lb 4 4 N lb Notes:. Performance is dependent upon heat sink configuration, system cooling conditions, and ambient temperature.. Values C rise above a C ambient temperature, with housed motor mounted to a mm x mm x 6 mm aluminum heat sink. 3. Peak torque assumes correct current; consult Aerotech. 4. Torque constant and motor constant specified at stall.. All performance and electrical specifications ±%. 6. Maximum winding temperature is C; thermistor trips at C.. Ambient operating temperature range C - C. Consult Aerotech for performance in elevated ambient temperatures.. All Aerotech amplifiers are rated A use torque constant in / A when sizing 8 ; p k. Rotary Motors BMS Series Aerotech GmbH, Südwestpark, 44 Nürnberg, Germany Fax:

3 BMS Series DIMENSIONS BMS Series Rotary Motors NEMA3 Note: Additional motor sizes available. Please consult factory and website for latest information BMS-Series PERFORMANCE Aerotech GmbH, Südwestpark, 44 Nürnberg, Germany Fax:

4 BMS Series DIMENSIONS NEMA34 Rotary Motors BMS Series BMS-Series PERFORMANCE Aerotech GmbH, Südwestpark, 44 Nürnberg, Germany Fax:

5 BMS3 Series ORDERING INFORMATION BMS Series Rotary Motors Ordering Example Motor BMS -D -EH -BK Series Model Brushless Rotary Servomotors BMS6 BMS Motor Winding 6, A, AH Connector Option D, FLY, MS NEMA 3 - Tcont =.33 (46. ) brushless motor NEMA 3 - Tcont =.6 (8. ) brushless motor Encoder Resolution EH, EH, EH, EH, EAS, EAS, EAS BK, VAC6 Winding Standard winding H Standard winding with Hall board, required with AS style encoders Connectors -DB -FLY-x Feedback -EH -EH -EH -EH -EAS -EAS -EAS -BK -VAC6 Accessories MC-HPD-M MC-DB-F MCM-3 MCF-3 conductor plastic D-Shell for feedback and motor power (std) MS connectors for feedback and motor power Flying leads for feedback and motor power with custom length cable line incremental squarewave encoder with marker and hall effect tracks (RS-4 line driver output) line incremental squarewave encoder with marker and hall effect tracks (RS-4 line driver output) line incremental squarewave encoder with marker and hall effect tracks (RS-4 line driver output) line incremental squarewave encoder with marker and hall effect tracks (RS-4 line driver output) line incremental amplified sinewave encoder with marker; requires H winding option; maximum speed 48 rpm line incremental amplified sinewave encoder with marker; requires H winding option; maximum speed 4 rpm line incremental amplified sinewave encoder with marker; requires H winding option; maximum speed rpm Brake, (.8 ), 4 VDC,.3 A for BMS6, BMS Vacuum preparation to -6 torr Connector; HPD motor power mate for BMS6, BMS motors Connector; DB motor feedback mate for BMS6, BMS motors Connector; MS motor power mate for BMS6, BMS Connector; MS motor feedback mate for BMS6, BMS Aerotech GmbH, Südwestpark, 44 Nürnberg, Germany Fax:

6 BMS34 Series ORDERING INFORMATION Ordering Example BMS 8 H -EH -BK Motor Series Motor Torque () Brushless Rotary Servomotors BMS8 BMS46 Winding Option 8, 46 AH Connector Option NEMA 34 - Tcont =.6 (. ) brushless motor NEMA 34 - Tcont =.86 (44.8 ) brushless motor Encoder Resolution EH, EH, EH, EH, EAS, EAS, EAS BK, NS, VAC6 Rotary Motors BMS Series Winding Option H Connector Option Feedback -EH -EH -EH -EH -EAS -EAS -EAS Standard winding with Hall board (required for all encoder options) MS connectors for feedback and motor power (standard) line incremental squarewave encoder with marker (RS-4 line driver output) line incremental squarewave encoder with marker (RS-4 line driver output) line incremental squarewave encoder with marker (RS-4 line driver output) line incremental squarewave encoder with marker (RS-4 line driver output) line incremental amplified sinewave encoder with marker; maximum speed 48 rpm line incremental amplified sinewave encoder with marker; maximum speed 4 rpm line incremental amplified sinewave encoder with marker; maximum speed rpm -BK Brake; holding torque =. (4 ), 4 VDC,.4 A -NS IP6 rated Nitrile front shaft seal -VAC6 Vacuum preparation to -6 torr Example. Motor with -line encoder and Nitrile shaft seal: BMS8H-EH-NS Accessories MCM-3 MCF-3 Connector; MS motor power mate Connector; MS motor feedback mate Aerotech GmbH, Südwestpark, 44 Nürnberg, Germany Fax:

BMS Series. DC Brushless Torque Motors. Slotless, brushless stator design provides zerocogging torque for unsurpassed velocity control

BMS Series. DC Brushless Torque Motors. Slotless, brushless stator design provides zerocogging torque for unsurpassed velocity control BMS Series Rotary Motors BMS Series DC Brushless Torque Motors Slotless, brushless stator design provides zerocogging torque for unsurpassed velocity control Smoother velocity than with standard DC brushtype