Positioning Systems - Romicon

Table 5.4 Specifications for TMR7 Torque Motors
Symbol Unit TMR74 TMR74L TMR76 TMR76L TMR7C TMR7CL
Peak torque for 1 second T p Nm 95 95 140 140 280 280
Continuous torque (coil temp. 80 °C) T c Nm 36 36 54 54 96 96
Stationary torque (coil temp..80 °C) T s Nm 25 25 38 38 76 76
Peak current for 1 second I p A eff 8 16 8 16 8 16
Continous current (Coil temp. 80 °C) I c A Eff 3 6 3 6 3 6
Moment of inertia of rotor ring J kgm 2 44 x 10 -3 44 x 10 -3 66 x 10 -3 66 x 10 -3 132 x 10 -3 132 x 10 -3
Engine mass M m kg 11,1 11,1 15,1 15,1 26 26
Engine constant (coil temp. 25 °C) K m Nm/� W 2,5 2,5 3,0 3,0 5,7 5,7
Winding resistance (Coil temp.. 25 °C) R 25 � 8,0 2 10,4 2,6 20,2 5,1
Winding resistance (Coil temp. 100 °C) R 100 � 9,5 2,4 12,4 3,1 25 6,3
Motor inductivity L mH 32 8 42 10,5 84 21
Electric time constant T e ms 4 4 4 4 4 4
Torque constant K t Nm/A Eff 12 6 18 9 36 18
Voltage constant K v V rms/(rad/s) 7,2 3,6 11,6 5,8 23,1 11,6
Number of poles 2p – 44 44 44 44 44 44
Thermal resistance R th K/W 0,31 0,31 0,25 0,25 0,18 0,18
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
Height of stator L mm 80 80 100 100 160 160
Height of rotor H mm 40 40 60 60 120 120
Standard motor cable length mm 3000 3000 3000 3000 3000 3000