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Positioning Systems
Linear Motor Components
4. Linear Motor Components
4.1 Linear Motors, LMS Series
HIWIN synchronous LMS linear motors are the powerhouses of linear
drives and are characterized by a particularly high power density
and minimal cogging.
The three-phase motors consist of a primary part (forcer) with a wound
armature core and a secondary part with permanent magnets (stators).
Any length of stroke required can be achieved by combining several stators.
3-phase
High force
Exceptional acceleration
Low cogging
Any length stroke
Several forcers possible on one stator
Table 4.1 Specifications for Linear Motors, LMS Series
Note: Values in the table refer to operation without forced cooling
Force (N)
2000
1000
0
Force Chart for LMS Linear Motors
470
180
peak force
continuous force
600
220
900
340
LMS13 LMS23 LMS27 LMS37 LMS47 LMS57 LMS67
Linear motor type
Symbol Unit LMS13 LMS23 LMS27 LMS37 LMS37L LMS47 LMS47L LMS57 LMS57L LMS67 LMS67L
Peak force for 1 second Fp N 470 600 900 1250 1250 1700 1700 2000 2000 2500 2500
Continuous force (at 80 °C) Fc N 180 220 340 475 475 650 650 780 780 950 950
Peak current for 1 second Ip A (rms) 12,3 10,5 10,5 10,5 21,0 10,5 21,0 10,5 21,0 10,5 21,0
Continuous force (at 80 °C) Ic A (rms) 4,1 3,5 3,5 3,5 7,0 3,5 7,0 3,5 7,0 3,5 7,0
Force constant Kf N/A (rms) 44 61 97 136 68 186 96 223 112 271 136
Attraction force Fa N 805 1350 2036 2850 2850 4071 4071 4885 4885 5700 5700
Max. winding temperature Tmax °C 100 100 100 100 100 100 100 100 100 100 100
Electric time constant Ke ms 9,8 11,4 10,8 10,8 10,8 11,1 11,1 11,2 11,2 11,3 11,3
Resistance (per phase at 25 °C) R 25 � 1,7 2,3 3,1 4,3 1,0 5,6 1,3 6,5 1,6 7,4 1,9
Inductance (per phase) L mH 33 55 32 45 10 62 15 73 18 84 21
Pole pitch 2� mm 32 32 32 32 32 32 32 32 32 32 32
Bending radius of motor cable Rbend mm 37,5 37,5 37,5 37,5 37,5 37,5 37,5 37,5 37,5 37,5 37,5
Back EMF constant Kv Vrms/(m/s) 26 43 51 71 41 101 59 121 61 141 71
Motor constant (at 25°C) Km N/� W 19,4 23,1 31,8 38,0 38,0 45,4 45,5 50,7 50,7 57,6 57,6
Thermal resistance Rth °C/W 0,33 0,33 0,46 0,40 0,40 0,30 0,30 0,26 0,26 0,23 0,23
Thermal circuit breakers 100 °C, bimetal (opener), DC 12 V/6 A, DC 24 V/3 A
Max. DC-bus voltage V 750 750 750 750 750 750 750 750 750 750 750
Mass of forcer Mf kg 1,8 2,7 4,1 5,9 5,9 8,0 8,0 9,4 9,4 10,8 10,8
Own mass of stator Ms kg/m 4,2 6,2 6,2 8,2 8,2 11,5 11,5 13,7 13,7 15,9 15,9
Width of stator Ws mm 60 80 80 100 100 130 130 150 150 170 170
Length of stator / Dimension N Ls mm 192 mm/N=2, 256/N=3, 320 mm/N=4, 384 mm/N=5, 448 mm/N=6, 512 mm/N=7
Distance between fixing holesgen As mm 45 65 65 85 85 115 115 135 135 155 155
Height of total system H mm 55,2 55,2 57,4 57,4 57,4 57,4 57,4 57,4 57,4 57,4 57,4
1250
475
1700
650
2000
780
2500
950