maxon

EC 8 8 mm, brushless, 2 WattA with hall sensorsB sensorlessmaxon EC motorM 2.5:1Stock programStandard programSpecial program (on request)A with Hall sensorsB sensorlessMotor DataValues at nominal voltage1 Nominal voltage V2 No load speed rpm3 No load current mA4 Nominal speed rpm5 Nominal torque (max. continuous torque) mNm6 Nominal current (max. continuous current) A7 Stall torque mNm8 Starting current A9 Max. efficiency %Characteristics10 Terminal resistance phase to phase 11 Terminal inductance phase to phase mH12 Torque constant mNm/A13 Speed constant rpm/V14 Speed/torque gradient rpm/mNm15 Mechanical time constant ms16 Rotor inertia gcm 2Article Numbers384406 384407 384408384409 384410 3844116 12 2436000 43900 4270063.6 44 2124500 33000 321000.946 0.936 0.9520.662 0.404 0.1992.73 3.49 3.521.98 1.54 0.75569 70 713.02 7.8 31.80.039 0.106 0.4471.54 2.53 5.216200 3770 183012200 11600 112003.19 3.03 2.920.024961 0.024961 0.024961Specifications Operating Range CommentsThermal data17 Thermal resistance housing-ambient 51.2 K/W18 Thermal resistance winding-housing 3.5 K/W19 Thermal time constant winding 0.832 s20 Thermal time constant motor 154 s21 Ambient temperature -20…+100°C22 Max. permissible winding temperature 125°CMechanical data (preloaded ball bearings)23 Max. permissible speed 80000 rpm24 Axial play at axial load < 0.15 N 0 mm> 0.15 N max. 0.06 mm25 Radial play preloaded26 Max. axial load (dynamic) 0.1 N27 Max. force for press fits (static) 10 N28 Max. radial loading, 2 mm from flange 2 NOther specifications29 Number of pole pairs 130 Number of phases 331 Weight of motor 6 gValues listed in the table are nominal.Connection with hall sensors sensorlessPin 1 Motor winding 1 Motor winding 1Pin 2 Motor winding 2 Motor winding 2Pin 3 Motor winding 3 Motor winding 3Pin 4 VHall 4.5...24 VDC N.C.Pin 5 GNDPin 6 Hall sensor 1Pin 7 Hall sensor 2Pin 8 Hall sensor 3Connector Article number Article numberMolex 52745-0896 52207-0485Molex 52089-0419Tyco 84953-4Pin for design with Hall sensors:FPC, 8 pole, pitch 0.5 mm, top contact styleWiring diagram for Hall sensors see page 27n [rpm]2.0 W0.5 1.0384406Continuous operationIn observation of above listed thermal resistance(lines 17 and 18) the maximum permissible windingtemperature will be reached during continuousoperation at 25°C ambient.= Thermal limit.Short term operationThe motor may be briefly overloaded (recurring).Assigned power ratingmaxon Modular System Overview on page 16 - 21Planetary Gearhead8 mm0.01 - 0.1 NmPage 205Recommended Electronics:DECS 50/5 Page 297DEC 24/1 381510 297DEC Module 24/2 298Notes 20May 2012 edition / subject to changemaxon EC motor139