maxon

EC 20 flat 20 mm, brushless, 3 WattA with Hall sensorsB sensorlessmaxon flat EC motorM 1:1Stock programStandard programSpecial program (on request)Article NumbersA 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 2May 2012 edition / subject to change351098 351099 351100 351101339255 241916 339257 3392586 9 12 249130 9760 9540 945048.4 35.1 25.8 12.63090 4180 3510 38303.21 4.05 3.27 3.780.554 0.474 0.293 0.1635.29 8.04 5.67 7.120.9 0.957 0.503 0.30960 66 61 656.67 9.4 23.9 77.70.639 1.3 2.35 9.85.88 8.4 11.3 231620 1140 847 4141840 1270 1790 140074.1 51.2 72.1 56.23.84 3.84 3.84 3.84Specifications Operating Range CommentsThermal datan [rpm]Continuous operation17 Thermal resistance housing-ambient 15.1 K/WIn observation of above listed thermal resistance18 Thermal resistance winding-housing 7.46 K/W(lines 17 and 18) the maximum permissible winding19 Thermal time constant winding 3.28 stemperature will be reached during continuous20 Thermal time constant motor 25.1 soperation at 25°C ambient.21 Ambient temperature -40…+100°C= Thermal limit.22 Max. permissible winding temperature +125°CMechanical data (preloaded ball bearings)23 Max. permissible speed 15000 rpm24 Axial play at axial load < 2.0 N 0 mm> 2.0 N 0.14 mm25 Radial play preloaded26 Max. axial load (dynamic) 1.8 N27 Max. force for press fits (static) 18 N(static, shaft supported)200 N28 Max. radial loading, 5 mm from flange 1.8 NOther specifications29 Number of pole pairs 430 Number of phases 331 Weight of motor 15 gValues listed in the table are nominal.Connection with Hall sensors sensorlessPin 1 V Hall 4.5…24 VDC Motor winding 1Pin 2 Hall sensor 3 Motor winding 2Pin 3 Hall sensor 1 Motor winding 3Pin 4 Hall sensor 2 neutral pointPin 5 GNDPin 6 Motor winding 3Pin 7 Motor winding 2Pin 8 Motor winding 1Adapter Article number Article numbersee p. 321 220300 220310Connector Article number Article numberTyco 1-84953-1 84953-4Molex 52207-1185 52207-0485Molex 52089-1119 52089-0419Pin for design with Hall sensors:FPC, 11-pol, Pitch 1.0 mm, top contact styleWiring diagram for Hall sensors see p. 29Short term operationThe motor may be briefly overloaded (recurring).Assigned power ratingmaxon Modular System Overview on page 16 - 21Spur Gearhead20.3 mm0.06 - 0.25 NmPage 221Planetary Gearhead22 mm0.5 - 2.0 NmPage 224/226Recommended Electronics:ESCON 50/5 Page 292DECS 50/5 297DEC 24/1 297DEC Module 24/2 298EPOS2 24/2 312EPOS3 70/10 EtherCAT 319Notes 20maxon EC motor183