EC 45 flat ∅42.
9 mm, brushless, 30 Watt
A with Hall sensors B sensorless
maxon flat motor
M 1:2
Stock program Part Numbers
Standard program
Special program (on request)
A with Hall sensors 200142 339281 339282
B sensorless 200189 339283 339284
Motor Data
Values at nominal voltage
1 Nominal voltage V 12 12 24 24 36 36
2 No load speed rpm 4380 4370 4380 4380 4760 4760
3 No load current mA 144 144 73 73 55.4 55.3
4 Nominal speed rpm 2940 2800 2940 2900 3290 3270
5 Nominal torque (max. continuous torque) mNm 55.5 55.2 55.3 55.2 66.6 66.6
6 Nominal current (max. continuous current) A 2.03 2.02 1.01 1.01 0.849 0.849
7 Stall torque mNm 55.5 219 253 243 380 369
8 Starting current A 10 8.58 4.97 4.77 5.38 5.22
9 Max. efficiency % 78 76 78 77 81 81
Characteristics
10 Terminal resistance phase to phase W 1.2 1.4 4.83 5.03 6.69 6.89
11 Terminal inductance phase to phase mH 0.56 0.56 2.24 2.24 4.29 4.29
12 Torque constant mNm/A 25.5 25.5 51 51 70.6 70.6
13 Speed constant rpm/V 374 374 187 187 135 135
14 Speed/torque gradient rpm/mNm 17.6 20.5 17.7 18.5 12.8 13.2
15 Mechanical time constant ms 17.1 19.9 17.2 17.9 12.4 12.8
16 Rotor inertia gcm2 92.5 92.5 92.5 92.5 92.5 92.5
Specifications Operating Range Comments
Thermal data n [rpm] Continuous operation
Thermal resistance housing-ambient
17 5.41 K/W In observation of above listed thermal resistance
Thermal resistance winding-housing
18 3.97 K/W
Thermal time constant winding
19 11.5 s (lines 17 and 18) the maximum permissible wind-
Thermal time constant motor
20 251 s ing temperature will be reached during continuous
-40…+100°C
21 Ambient temperature operation at 25°C ambient.
+125°C
22 Max. winding temperature = Thermal limit.
Mechanical data (preloaded ball bearings)
23 Max. permissible speed 10 000 rpm Short term operation
Axial play at axial
24 load < 5.0 N 0 mm The motor may be briefly overloaded (recurring).
> 5.0 N typ. 0.14 mm
25 Radial play preloaded
26 Max. axial load (dynamic) 4.8 N Assigned power rating
27 Max. force for press fits (static) 53 N
(static, shaft supported) 1000 N
28 Max. radial load, 8 mm from flange 21 N
Other specifications maxon Modular System Overview on page 20–25
8
29 Number of pole pairs
3
30 Number of phases Planetary Gearhead Encoder MILE
31 Weight of motor 75 g ∅42 mm 256 - 2048 CPT,
3 - 15 Nm 2 channels
Values listed in the table are nominal. Page 285 Page 308
Connection with Hall sensors sensorless Spur Gearhead
Pin 1 VHall 4.5…18 VDC Motor winding 1 ∅45 mm
Pin 2 Hall sensor 3* Motor winding 2 0.5 - 2.0 Nm
Pin 3 Hall sensor 1* Motor winding 3 Page 286
Pin 4 Hall sensor 2* neutral point
Pin 5 GND Recommended Electronics:
Pin 6 Motor winding 3
Pin 7 Motor winding 2 Page
ESCON 36/3 EC 342
Pin 8 Motor winding 1 ESCON Mod. 50/4 EC-S 343
*Internal pull-up (7…13 kW) on pin 1 ESCON Module 50/5 343
Wiring diagram for Hall sensors see p. 35 ESCON 50/5 344
Adapter Part number Part number DEC Module 24/2 346
see p. 362 220300 220310 DEC Module 50/5 346
Connector Part number Part number EPOS2 24/2, Module 36/2 350
Tyco 1-84953-1 84953-4 EPOS2 24/5, 50/5 351
Molex 52207-1133 52207-0433 Option EPOS2 P 24/5 354
Molex 52089-1119 52089-0419 With Cable and Connector EPOS3 70/10 EtherCAT 357
Pin for design with Hall sensors: (Motor length +1.3 mm, MAXPOS 50/5 360
FPC, 11-pol, Pitch 1.0 mm, top contact style Ambient temperature -20…+100°C) Notes 24
June 2014 edition / subject to change maxon EC motor 231
