maxon

EC 45 45 mm, brushless, 250 Watt, approvedmaxon EC motorM 1:4Stock programStandard programSpecial program (on request)Article NumbersMotor 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 2136210 136207 136211 136208 136212 13620924 24 36 36 48 488670 5000 10400 6010 10700 6160897 341 834 312 656 2447970 4300 9730 5320 10000 5490311 331 312 341 316 34712.5 7.51 10.2 6.21 7.94 4.864400 2540 5750 3320 6110 3530167 55.8 175 58.3 143 47.786 85 87 86 87 870.143 0.43 0.206 0.617 0.336 1.010.0565 0.17 0.0883 0.265 0.149 0.44826.3 45.5 32.8 56.9 42.7 73.9364 210 291 168 224 1291.98 1.98 1.82 1.82 1.76 1.764.34 4.34 3.99 3.99 3.85 3.85209 209 209 209 209 209Specifications Operating Range CommentsThermal data17 Thermal resistance housing-ambient 1.7 K/W18 Thermal resistance winding-housing 1.1 K/W19 Thermal time constant winding 31 s20 Thermal time constant motor 1570 s21 Ambient temperature -20…+100°C22 Max. permissible winding temperature +125°CMechanical data (preloaded ball bearings)23 Max. permissible speed 12000 rpm24 Axial play at axial load < 20 N 0 mm> 20 N max. 0.15 mm25 Radial play preloaded26 Max. axial load (dynamic) 16 N27 Max. force for press fits (static) 182 N(static, shaft supported)5000 N28 Max. radial loading, 5 mm from flange 180 NOther specifications29 Number of pole pairs 130 Number of phases 331 Weight of motor 1150 gProtection toIP54*Values listed in the table are nominal.Connection motor (Cable AWG 16)Cable 1 Motor winding 1Cable 2 Motor winding 2Cable 3 Motor winding 3Connection sensors (Cable AWG 24) 1)white Hall sensor 3brown Hall sensor 2green Hall sensor 1yellow GNDgrey V Hall 4.5…24 VDCWiring diagram for Hall sensors see p. 271) Not lead through in combination with resolver.OptionTemperature monitoring, PTC resistance Micropille110°C, R 25°C < 0.5 k, R 105°C = 1.2…1.5 k,R 115°C = 7…13 k, R 120°C = 18…35 kMay 2012 edition / subject to changen [rpm]Continuous 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 Gearhead42 mm3 - 15 NmPage 242Planetary Gearhead52 mm4 - 30 NmPage 245Planetary Gearhead62 mm8 - 50 NmPage 247* Protection level only wheninstalled with flange-side seal.Recommended Electronics:ESCON 50/5 Page 292DECS 50/5 297DEC Module 50/5 299DEC 70/10 305DES 50/5, 70/10 306EPOS2 50/5, 70/10 313EPOS3 70/10 EtherCAT 319Notes 20Encoder HEDL 9140500 CPT,3 channelsPage 281Resolver Res 2626 mm10 VPage 287Brake AB 2824 VDC0.4 NmPage 331maxon EC motor159